CN116587704B - PVC dirt-resistant carpet and preparation method thereof - Google Patents
PVC dirt-resistant carpet and preparation method thereof Download PDFInfo
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- CN116587704B CN116587704B CN202310384765.9A CN202310384765A CN116587704B CN 116587704 B CN116587704 B CN 116587704B CN 202310384765 A CN202310384765 A CN 202310384765A CN 116587704 B CN116587704 B CN 116587704B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 60
- 239000002344 surface layer Substances 0.000 claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 48
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims description 69
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000003513 alkali Substances 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- 238000011282 treatment Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 15
- 239000012065 filter cake Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- 238000011221 initial treatment Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 3
- 230000005587 bubbling Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- 239000011148 porous material Substances 0.000 description 15
- 238000005457 optimization Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000706 filtrate Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G27/00—Floor fabrics; Fastenings therefor
- A47G27/02—Carpets; Stair runners; Bedside rugs; Foot mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0057—Producing floor coverings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/198—Graphene oxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2471/00—Floor coverings
- B32B2471/02—Carpets
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Silicon Compounds (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a PVC dirt-resistant carpet and a preparation method thereof, the PVC dirt-resistant carpet comprises a surface layer and an inner layer, wherein the inner layer is positioned between the two surface layers, the porosity of the surface layer is larger than that of the inner layer, the surface layer and the inner layer contain graphene oxide, a silicon dioxide skeleton is arranged on the graphene oxide, the graphene oxide is connected with PVC through the silicon dioxide skeleton, a cross-linked network structure is formed in a bubbling bubble, the conductivity of a product is improved, meanwhile, the graphene oxide in a single aperture forms a funnel-shaped structure, a certain amount of impurities can be adsorbed, and the impurities are prevented from accumulating on the surface of the product. The PVC dirt-resistant carpet prepared by the method has the characteristics of strong practicability, high conductivity and difficulty in being stained with dust and impurities on the surface of the product.
Description
Technical Field
The invention relates to the technical field of textile materials, in particular to a PVC dirt-resistant carpet and a preparation method thereof.
Background
PVC, also called as plastic floor, is a material widely used in the market at present, and has unique properties, practicality and durability, so that PVC carpets are widely applied; moreover, PVC carpets are light in weight and excellent in performance.
However, since PVC carpets are plastic products, static electricity is easily caused after friction in a dry season, thereby adsorbing dust in air and affecting the dirt resistance of PVC carpets, and methods for solving the problems include: the carpet is finished to form a conductive coating on the surface, but after the carpet is finished, the carpet is poor in durability, the conductivity disappears after washing or friction for many times, and a conductive agent is added in the PVC preparation process to ensure that the whole PVC material has certain conductivity, the performance of the PVC material is reduced and the density is increased, and the conductive network cannot be formed due to the fact that the conductive network is formed by single PVC.
Disclosure of Invention
The invention aims to provide a PVC dirt-resistant carpet and a preparation method thereof, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a PVC dirt-resistant carpet, characterized in that: the PVC composite material comprises a surface layer and an inner layer, wherein the inner layer is positioned between the two surface layers, the porosity of the surface layer is larger than that of the inner layer, and the inner layer and the surface layer are made of PVC; the porosity of the surface layer is 30% -50%, and the porosity of the inner layer is 10% -20%.
According to the technical scheme, the aperture range of the surface layer is 300-500 mu m, and the aperture range of the inner layer is 80-200 mu m.
According to the technical scheme, the materials used for the surface layer and the inner layer further comprise modified silicon dioxide and graphene oxide.
According to the technical scheme, the modified silicon dioxide is obtained by treating silicon dioxide with a silane coupling agent; the silane coupling agent is any one of a silane coupling agent KH-550, a silane coupling agent MES or a silane coupling agent KH-570.
According to the technical scheme, the particle size of the graphene oxide is 220-280 mu m.
According to the technical scheme, the thickness of the surface layer is 4-8 mm, and the thickness of the inner layer is 5-10 mm.
According to the technical scheme, the preparation method of the PVC dirt-resistant carpet is characterized by comprising the following steps of:
(1) Placing the inner layer between the two surface layers, and pressing for 10-40 s at 150-180 ℃ and 10-30 Mpa to obtain a blank;
(2) Mixing the blank with silica sol, adding concentrated ammonia water, stirring and mixing, filtering, and drying to obtain a once-treated blank;
(3) Mixing the primary treatment blank with water, adding a silane coupling agent, stirring and mixing, filtering, and washing to obtain a secondary treatment blank;
(4) Mixing the secondary treatment blank with graphene oxide dispersion liquid, stirring and mixing, filtering, and drying to obtain a tertiary treatment blank;
(5) Mixing the three-time treated blank with alkali liquor, ultrasonic mixing and dispersing, filtering, washing and drying to obtain filter cake, and pressing the filter cake for 30-40 s at 100-140 deg.C under 15-30 Mpa to obtain the PVC dirt-resistant carpet
According to the technical scheme, the preparation method of the silica sol in the step (2) comprises the steps of mixing ethyl orthosilicate with an ethanol water solution with the mass fraction of 75% according to the volume ratio of 1: 10-1:15, regulating the PH to 7 by ammonia water, and stirring and mixing to obtain the silica sol.
According to the technical scheme, the preparation method of the graphene oxide dispersion liquid in the step (3) comprises the steps of mixing graphene oxide with water according to a mass ratio of 1: 20-1: 30, adding ethanol with the mass of 5-10 times of that of the graphene oxide, and carrying out ultrasonic mixing to obtain graphene oxide dispersion liquid.
According to the technical scheme, in the step (5), the alkali liquor is obtained by mixing 30% by mass of potassium hydroxide solution with isopropanol according to a mass ratio of 15:1-30:1; and during the pressing, applying 80-240V voltage to the surface layers at two sides of the filter cake.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, different porosities are arranged on the surface layer and the inner layer, the surface layer aperture is larger than the inner layer aperture, on one hand, impurities can be adsorbed when the surface layer is empty, the dirt resistance of a product is improved, on the other hand, silicon dioxide can be limited to be deposited in the small-aperture of the inner layer when the silicon dioxide is deposited, and when graphene oxide is adsorbed subsequently, a large amount of silicon dioxide with a silane coupling agent is deposited in the aperture of the inner layer, but the apertures of the inner layer and the apertures between the inner layer and the surface layer are filled with silicon dioxide, so that the graphene oxide lamellar structure can only be partially adsorbed with the silicon dioxide of the inner layer, a funnel-shaped structure is formed, meanwhile, the conductivity of the whole product is improved, the antistatic property of the product is improved, and the graphene oxide and the silicon dioxide form a funnel-shaped structure, so that when the product adsorbs part of impurities, the impurities can be adsorbed in the gaps between the graphene oxide and the inner layer, and the graphene oxide can shield part of the impurities, and the dirt resistance of the product is further improved.
Detailed Description
According to a first aspect of the present invention there is provided a PVC dirt-resistant carpet, characterised by: the PVC composite material comprises a surface layer and an inner layer, wherein the inner layer is positioned between the two surface layers, the porosity of the surface layer is larger than that of the inner layer, and the inner layer and the surface layer are made of PVC; the porosity of the surface layer is 30% -50%, and the porosity of the inner layer is 10% -20%.
As optimization, the pore diameter of the surface layer is 300-500 mu m, and the pore diameter of the inner layer is 80-200 mu m.
Preferably, the materials used for the surface layer and the inner layer further comprise modified silicon dioxide and graphene oxide.
As optimization, the modified silicon dioxide is obtained by treating silicon dioxide with a silane coupling agent; the silane coupling agent is any one of a silane coupling agent KH-550, a silane coupling agent MES or a silane coupling agent KH-570.
Preferably, the particle size of the graphene oxide is 220-280 μm.
The thickness of the surface layer is 4-8 mm, and the thickness of the inner layer is 5-10 mm.
As optimization, a method for preparing the PVC dirt-resistant carpet comprises the following steps:
(1) Placing the inner layer between the two surface layers, and pressing for 10-40 s at 150-180 ℃ and 10-30 Mpa to obtain a blank;
(2) Mixing the blank with silica sol, adding concentrated ammonia water, stirring and mixing, filtering, and drying to obtain a once-treated blank;
(3) Mixing the primary treatment blank with water, adding a silane coupling agent, stirring and mixing, filtering, and washing to obtain a secondary treatment blank;
(4) Mixing the secondary treatment blank with graphene oxide dispersion liquid, stirring and mixing, filtering, and drying to obtain a tertiary treatment blank;
(5) Mixing the three-time treated blank with alkali liquor, ultrasonic mixing and dispersing, filtering, washing and drying to obtain filter cake, and pressing the filter cake for 30-40 s at 100-140 deg.C under 15-30 Mpa to obtain the PVC dirt-resistant carpet
As optimization, the preparation method of the silica sol in the step (2) comprises the steps of mixing ethyl orthosilicate with an ethanol aqueous solution with the mass fraction of 75% according to the volume ratio of 1: 10-1:15, regulating the PH to 7 by ammonia water, and stirring and mixing to obtain the silica sol.
As optimization, the preparation method of the graphene oxide dispersion liquid in the step (3) comprises the steps of mixing graphene oxide with water according to a mass ratio of 1: 20-1: 30, adding ethanol with the mass of 5-10 times of that of the graphene oxide, and carrying out ultrasonic mixing to obtain graphene oxide dispersion liquid.
As optimization, in the step (5), the alkali liquor is obtained by mixing 30% by mass of potassium hydroxide solution with isopropanol according to a mass ratio of 15:1-30:1; wherein, during pressing, 80-240V of voltage is applied to the surface layers at two sides of the filter cake.
Example 1
A PVC dirt-resistant carpet comprises an inner layer and a surface layer, wherein the inner layer is arranged between the two surface layers, the thickness of the inner layer is 8mm, the porosity is 15.6%, the pore size is 120 mu m, the thickness of the surface layer is 4mm, the porosity is 38.7%, and the pore size is 340 mu m.
The preparation method of the PVC dirt-resistant carpet specifically comprises the following preparation steps:
(1) Placing the inner layer between two surface layers, and pressing at 155 deg.C under 10Mpa for 20s to obtain blank;
(2) Mixing the blank with silica sol according to a mass ratio of 1:10, adding 0.1 times of concentrated ammonia water of the blank patent, stirring and mixing for 20min at a temperature of 30 ℃, filtering, removing filtrate, and drying the rest substances for 3h at a temperature of 100 ℃ to obtain a primary treatment blank;
(3) Mixing the primary treatment blank with water according to a mass ratio of 1:20, adding a silane coupling agent KH-550 with the mass of 0.1 times of that of the primary treatment blank, stirring and mixing for 3 hours at 50 ℃, filtering, removing filtrate, and washing the residual substances with deionized water for 3 times to obtain a secondary treatment blank;
(4) Mixing the secondary treatment blank and graphene oxide dispersion liquid according to the mass ratio of 1:30, stirring and mixing for 2 hours at the temperature of 40 ℃, filtering, removing filtrate, and drying the rest materials for 2 hours at the temperature of 100 ℃ to obtain a tertiary treatment blank;
(5) Mixing the three-time treated blank with alkali liquor according to the mass ratio of 1:15, carrying out ultrasonic mixing and dispersion for 30min under the condition of the frequency of 40kHz, filtering, removing filtrate, washing the residual substances with deionized water to obtain washing liquid which is neutral, drying for 3h under the condition of the temperature of 90 ℃ to obtain a filter cake, and pressing the filter cake for 30s under the condition of the temperature of 120 ℃ and the pressure of 18Mpa to obtain the PVC dirt-resistant carpet.
As optimization, the preparation method of the silica sol in the step (2) comprises the steps of mixing ethyl orthosilicate with an ethanol aqueous solution with the mass fraction of 75% according to the volume ratio of 1:10, regulating the PH value to 7 by ammonia water, and stirring and mixing to obtain the silica sol.
As optimization, the preparation method of the graphene oxide dispersion liquid in the step (3) comprises the steps of mixing graphene oxide with the particle size of 230 mu m with water according to a mass ratio of 1:30, adding ethanol with the mass of 5 times of that of the graphene oxide, and carrying out ultrasonic mixing to obtain graphene oxide dispersion liquid.
As optimization, in the step (5), the alkali liquor is prepared by mixing 30% by mass of potassium hydroxide solution with isopropanol according to a mass ratio of 20:1, mixing to obtain alkali liquor; wherein 120V voltage is applied to the surface layers at two sides of the filter cake during pressing.
Example 2
A PVC dirt-resistant carpet comprises an inner layer and a surface layer, wherein the inner layer is arranged between the two surface layers, the thickness of the inner layer is 8mm, the porosity is 12.6%, the pore size is 131 mu m, the thickness of the surface layer is 4mm, the porosity is 35.6%, and the pore size is 327 mu m.
The difference between example 2 and example 1 is that the process of step (2) is not performed, and the rest of the steps are the same as those of example (1).
Example 3
A PVC dirt-resistant carpet comprises an inner layer and a surface layer, wherein the inner layer is arranged between the two surface layers, the thickness of the inner layer is 8mm, the porosity is 14.6%, the pore size is 121 mu m, the thickness of the surface layer is 4mm, the porosity is 34.2%, and the pore size is 324 mu m.
The difference between example 3 and example 1 is that the treatment of mixing with the alkali liquor in step (5) is not performed, and the other steps are the same as those in example (1).
Example 4
A PVC dirt-resistant carpet comprises an inner layer and a surface layer, wherein the inner layer is arranged between the two surface layers, the thickness of the inner layer is 8mm, the porosity is 14.6%, the pore size is 126 mu m, the thickness of the surface layer is 4mm, the porosity is 35.2%, and the pore size is 330 mu m.
The preparation method of the PVC dirt-resistant carpet specifically comprises the following preparation steps:
(1) Placing the inner layer between two surface layers, and pressing at 155 deg.C under 10Mpa for 20s to obtain blank;
(2) Mixing the blank with silica sol according to a mass ratio of 1:10, adding 0.1 times of concentrated ammonia water of the blank patent, stirring and mixing for 20min at a temperature of 30 ℃, filtering, removing filtrate, and drying the rest substances for 3h at a temperature of 100 ℃ to obtain a primary treatment blank;
(3) Mixing the primary treatment blank with water according to a mass ratio of 1:20, adding a silane coupling agent KH-550 with the mass of 0.1 times of that of the primary treatment blank, stirring and mixing for 3 hours at 50 ℃, filtering, removing filtrate, and washing the residual substances with deionized water for 3 times to obtain a secondary treatment blank;
(4) Mixing the secondary treatment blank and graphene oxide dispersion liquid according to the mass ratio of 1:30, stirring and mixing for 2 hours at the temperature of 40 ℃, filtering, removing filtrate, and drying the rest materials for 2 hours at the temperature of 100 ℃ to obtain a tertiary treatment blank;
(5) Mixing the three-time treated blank with alkali liquor according to the mass ratio of 1:15, carrying out ultrasonic mixing and dispersion for 30min under the condition of the frequency of 40kHz, filtering, removing filtrate, washing the residual substances with deionized water to obtain washing liquid which is neutral, drying for 3h under the condition of the temperature of 90 ℃ to obtain a filter cake, and pressing the filter cake for 30s under the condition of the temperature of 160 ℃ and the pressure of 18Mpa to obtain the PVC dirt-resistant carpet.
As optimization, the preparation method of the silica sol in the step (2) comprises the steps of mixing ethyl orthosilicate with an ethanol aqueous solution with the mass fraction of 75% according to the volume ratio of 1:10, regulating the PH value to 7 by ammonia water, and stirring and mixing to obtain the silica sol.
As optimization, the preparation method of the graphene oxide dispersion liquid in the step (3) comprises the steps of mixing graphene oxide with the particle size of 230 mu m with water according to a mass ratio of 1:30, adding ethanol with the mass of 5 times of that of the graphene oxide, and carrying out ultrasonic mixing to obtain graphene oxide dispersion liquid.
As optimization, in the step (5), the alkali liquor is prepared by mixing 30% by mass of potassium hydroxide solution with isopropanol according to a mass ratio of 20:1, mixing to obtain alkali liquor.
Comparative example 1
A PVC dirt-resistant carpet comprises an inner layer and a surface layer, wherein the inner layer is arranged between the two surface layers, the thickness of the inner layer is 8mm, the porosity is 13.6%, the pore size is 116 mu m, the thickness of the surface layer is 4mm, the porosity is 32.2%, and the pore size is 310 mu m.
The difference between comparative example 1 and example 1 is that the particle diameter of graphene oxide used in step (3) is 210 μm, and the other steps are the same as in example (1).
Comparative example 2
A PVC dirt-resistant carpet comprises an inner layer and a surface layer, wherein the inner layer is arranged between the two surface layers, the thickness of the inner layer is 8mm, the porosity is 14.8%, the pore size is 122 mu m, the thickness of the surface layer is 4mm, the porosity is 34.2%, and the pore size is 316 mu m.
The difference between comparative example 2 and example 1 is that the particle diameter of graphene oxide used in step (3) is 290 μm, and the other steps are the same as in example (1).
Comparative example 3
The difference between comparative example 3 and example 1 is that the mixing time with the alkali liquor in step (5) was adjusted to 3 hours, and the other steps were the same as in example (1).
Effect example 1
The invention detects the process parameters and the product performances of the plastics prepared in examples 1-5 and comparative examples 1-2 through a direct current meter (the precision is 1 level, the measuring range is 10-6 to 10-1A) and an electrostatic voltmeter (the precision is 1 level, the measuring range is0 to 100V, and the input impedance is more than 1012 ohm), measures the volume resistivity of the products in examples 1-4 and comparative examples 1-3 under the conditions that the temperature is 22 ℃ and the humidity is 30%, and tests the volume resistivity of the products after 50 times of washing again, and the data comparison results are shown in table 1.
TABLE 1 results of Performance test of PVC dirty-resistant carpets obtained in examples 1-4 and comparative examples 1-3
From the experimental data of example 1, it can be seen that the product prepared by the method has smaller volume resistance, is not easy to attract dust, and from the experimental data of example 2, if silica is not adsorbed in the inner layer fabric, graphene oxide is easy to wash away, so that the durability of the product is poor; from the experimental data of example 3 and comparative example 3, it can be found that the silica can form a framework structure after etching with alkali liquor in the later period, and further after hot pressing, the silica framework is embedded into PVC to improve the binding force between the silica and the product, if the etching time is longer, the silica completely disappears, and the graphene oxide is easy to lose after washing; from the experimental data of example 4, it can be found that if voltage is not applied to the two surface layers during the hot pressing in step (5), the graphene oxide cannot effectively form a network structure, thereby affecting the performance of the product; from the experimental data of comparative examples 1 and 2, it can be found that if the particle size of graphene oxide used in the process of preparing the product is too large or too small, the too small graphene oxide is easy to form punctiform deposition, and a large amount of alkali liquor contacts with silicon dioxide during alkali liquor etching, so that the silicon dioxide is etched in a large amount, further the product effect is affected, and if the particle size of graphene oxide is too large, pores are blocked, and the dirt resistance of the product is affected.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A PVC dirt-resistant carpet, characterized in that: the PVC composite material comprises a surface layer and an inner layer, wherein the inner layer is positioned between the two surface layers, the porosity of the surface layer is larger than that of the inner layer, and the inner layer and the surface layer are made of PVC; the porosity of the surface layer is 30% -50%, and the porosity of the inner layer is 10% -20%;
the materials used for the surface layer and the inner layer also comprise modified silicon dioxide and graphene oxide;
The modified silicon dioxide is obtained by treating silicon dioxide with a silane coupling agent; the silane coupling agent is any one of a silane coupling agent KH-550, a silane coupling agent MES or a silane coupling agent KH-570;
the aperture range of the surface layer is 300-500 mu m, and the aperture range of the inner layer is 80-200 mu m;
the preparation method of the PVC dirt-resistant carpet comprises the following steps:
(1) Placing the inner layer between the two surface layers, and pressing for 10-40 s at the temperature of 150-180 ℃ and the pressure of 10-30 mpa to obtain a blank;
(2) Mixing the blank with silica sol, adding concentrated ammonia water, stirring and mixing, filtering, and drying to obtain a once-treated blank;
(3) Mixing the primary treatment blank with water, adding a silane coupling agent, stirring and mixing, filtering, and washing to obtain a secondary treatment blank;
(4) Mixing the secondary treatment blank with graphene oxide dispersion liquid, stirring and mixing, filtering, and drying to obtain a tertiary treatment blank; the particle size of the graphene oxide is 220-280 mu m;
(5) Mixing the three-time treated blank with alkali liquor, performing ultrasonic mixing and dispersing, filtering, washing and drying to obtain a filter cake, and pressing the filter cake for 30-40 s at the temperature of 100-140 ℃ and the pressure of 15-30 mpa to obtain a PVC dirt-resistant carpet; the alkali liquor is prepared by mixing 30% by mass of potassium hydroxide solution with isopropanol according to a mass ratio of 15:1-30:1; and applying 80-240V voltage on the surface layers on two sides of the filter cake during pressing.
2. A PVC dirt-resistant carpet according to claim 1, wherein: the thickness of the surface layer is 4-8 mm, and the thickness of the inner layer is 5-10 mm.
3. A PVC dirt-resistant carpet according to claim 1, wherein: the preparation method of the silica sol in the step (2) comprises the steps of mixing ethyl orthosilicate with an ethanol aqueous solution with the mass fraction of 75% according to the volume ratio of 1: 10-1:15, regulating the pH to 7 by using ammonia water, and stirring and mixing to obtain the silica sol.
4. The method for preparing the PVC dirt-resistant carpet according to claim 1, wherein the method comprises the following steps: the preparation method of the graphene oxide dispersion liquid in the step (3) comprises the steps of mixing graphene oxide with water according to a mass ratio of 1: 20-1: 30, adding ethanol with the mass 5-10 times of that of the graphene oxide, and carrying out ultrasonic mixing to obtain graphene oxide dispersion liquid.
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