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CN108219278A - Micro-foaming polypropylene composite material of plant fiber and preparation method thereof - Google Patents

Micro-foaming polypropylene composite material of plant fiber and preparation method thereof Download PDF

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Publication number
CN108219278A
CN108219278A CN201810065824.5A CN201810065824A CN108219278A CN 108219278 A CN108219278 A CN 108219278A CN 201810065824 A CN201810065824 A CN 201810065824A CN 108219278 A CN108219278 A CN 108219278A
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China
Prior art keywords
plant fiber
foaming
polypropylene
composite material
parts
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Pending
Application number
CN201810065824.5A
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Chinese (zh)
Inventor
杜西兰
秦舒浩
龙雪彬
靳进波
石敏
陈光辉
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Guizhou Material Industrial Technology Research Institute
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Guizhou Material Industrial Technology Research Institute
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Priority to CN201810065824.5A priority Critical patent/CN108219278A/en
Publication of CN108219278A publication Critical patent/CN108219278A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/10—Homopolymers or copolymers of propene
    • C08J2423/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2497/00—Characterised by the use of lignin-containing materials
    • C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0028—Use of organic additives containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/20—Carboxylic acid amides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of micro-foaming polypropylene composite material of plant fiber and preparation method thereof.The present invention is effectively ensured the melt strength and mobility of base material, existing PP foaming techniques defect can not only be overcome, while be conducive to the processing and forming of product, with NaHCO using the PP of high intensity and high fluidity compoundings3For foaming agent, distribution of cells is uniform, expansion ratio is high using can be prepared under Shooting Technique processing conditions, the foaming product haveing excellent performance；Plant fiber has many advantages, such as that abundance, of low cost, easy processing, easy dyeing and waste can be degradable simultaneously, in addition, plant fiber has unique wheat fragrance taste, mating mold dermatoglyph can obtain unique surface perceived effect and apparent mass is good, have good development prospect in the fields such as automobile interior exterior decorations, packaging, foaming plastic tableware.

Description

Micro-foaming polypropylene composite material of plant fiber and preparation method thereof
Technical field
The present invention relates to polypropylene composite material of plant fiber, specifically a kind of micro-foaming polypropylene plant fiber composite wood Material and preparation method thereof.
Background technology
Polypropylene (PP) expanded material has many advantages, such as that loss of weight, thermal insulation are good, hardness is high, becomes expanded material research field One of hot spot.But common PP belongs to Crystalline plastics, is hardly flowed when temperature is less than fusing point, it is difficult to foam；And work as When temperature is higher than fusing point, melt strength drastically declines, and relatively low melt viscosity and melt strength are difficult to keep the gas of generation Firmly.
As automobile develops and the reinforcement of social environment consciousness, auto parts and components are light to low energy consumption and low discharge capacity direction Quantization, exploitation green material are imperative.Sponge be in the world source most extensively, the natural fibre of yield maximum Raw material is tieed up, the plant in nature, including plants such as timber, grass family class.Plant fiber material abundance, into The advantages that this cheap, easy processing, easy dyeing and waste can be degradable.Therefore, plant fiber foamed plastics can effectively subtract Few white pollution, improves resource utilization.Meanwhile plant fiber smell is good, can effectively reduce plastics taste, be conducive to develop low Smell plastic product, then mating mold dermatoglyph can obtain unique surface perceived effect and apparent mass, in automobile interior exterior decorations, packet There is good development prospect in the fields such as dress, foaming plastic tableware.
Invention content
It is an object of the present invention to provide a kind of micro-foaming polypropylene composite material of plant fiber and preparation method thereof, its energy It is effectively improved material smell, reduces material cost, mating mold dermatoglyph can obtain unique surface perceived effect and apparent mass Well, prepare low smell, low cost, environmental protection, good aesthetic quality plastic foamed product.
The invention is realized in this way：Lightweight polypropylene composite material of plant fiber, is calculated, according to the mass fraction including height 5-20 parts of strength polypropylene, 20-60 parts of high-flowability polypropylene, 5-30 parts of plant fiber, 5-20 parts of polyethylene, foaming agent 1-5 0.1-1 parts of part, 0.1-1 parts of nucleating agent and dispersant is prepare raw material；The foaming agent is inorganic foaming agent NaHCO3。
230 DEG C/the 2.16kg of high melt strength, propylene melt index is 0.5-5g/10min, melts tension 230 DEG C be 5-25g；230 DEG C/2.16kg of its melt index of the high-flowability polypropylene is 100-150g/10min.
The plant fiber is straw, maize straw, rice straw, bagasse, wood powder etc..
The preparation method of micro-foaming polypropylene composite material of plant fiber takes each component, including such as by above-mentioned mass fraction Lower step：
(1) it is high-strength polypropylene, high-flowability polypropylene, plant fiber, polyethylene, nucleating agent and dispersant is fully mixed It closes uniform；
(2) material of step (1) mixing is added in double screw extruder, the extruding pelletization at 180-190 DEG C is planted Fibres composite polypropylene matrix；
(3) foaming agent is added in the plant fiber composite polypropylene matrix prepared in step (2) and is uniformly mixed, is obtained micro- Fretting map plant fiber polypropylene composite material is made using Shooting Technique in expanded polypropylene composite material of plant fiber.
Compared with prior art, the molten of base material is effectively ensured using the PP of high intensity and high fluidity compoundings in the present invention Body intensity and mobility can not only overcome existing PP foaming techniques defect, while be conducive to the processing and forming of product, with NaHCO3 For foaming agent, distribution of cells is uniform, expansion ratio is high using can be prepared under Shooting Technique processing conditions, the hair haveing excellent performance Brewage；Plant fiber has abundance, of low cost, easy processing, easy dyeing and the waste can be degradable etc. excellent simultaneously Point, in addition, plant fiber has unique wheat fragrance taste, mating mold dermatoglyph can obtain unique surface perceived effect and apparent Quality is good, has good development prospect in the fields such as automobile interior exterior decorations, packaging, foaming plastic tableware.
Description of the drawings
Fig. 1 is micro-foaming polypropylene composite material of plant fiber moulding section and exterior view.
Fig. 2 is micro-foaming polypropylene composite material of plant fiber abscess electron microscope.
Specific embodiment
Embodiment 1：The preparation of micro-foaming polypropylene composite material of plant fiber
(1) it is weighed by mass fraction：10 parts of high-strength polypropylene, 25 parts of plant fiber, gathers 54 parts of high-flowability polypropylene 0.5 part of 10 parts of ethylene, 0.5 part of nucleating agent calcium carbonate and dispersant ethylene stearic amide.
(2) by each component blender mixing in step (1), double screw extruder extruding pelletization is added in, that is, prepares plant Fibres composite polypropylene matrix.
(3) 2 parts of NaHCO are added in the plant fiber composite polypropylene matrix prepared in step (2)3, mixing, using injection Fretting map plant fiber polypropylene composite material is made in technique.
Unexpanded, material after foaming mechanical property is tested respectively, the results are shown in Table 1.
Embodiment 2：The preparation of micro-foaming polypropylene composite material of plant fiber
(1) it is weighed by mass fraction：12 parts of high-strength polypropylene, 29 parts of plant fiber, gathers 50 parts of high-flowability polypropylene 0.5 part of 8 parts of ethylene, 0.5 part of nucleating agent calcium carbonate and dispersant ethylene stearic amide.
(2) by each component blender mixing in step (1), double screw extruder extruding pelletization is added in, that is, prepares plant Fibres composite polypropylene matrix.
(3) 2 parts of foaming agents, mixing, using injection are added in the plant fiber composite polypropylene matrix prepared in step (2) Fretting map plant fiber polypropylene composite material is made in technique.
Unexpanded, material after foaming mechanical property is tested respectively, the results are shown in Table 2.
Embodiment 3：The preparation of micro-foaming polypropylene composite material of plant fiber
(1) it is weighed by mass fraction：15 parts of high-strength polypropylene, 20 parts of plant fiber, gathers 54 parts of high-flowability polypropylene 0.4 part of 10 parts of ethylene, 0.6 part of nucleating agent calcium carbonate and dispersant ethylene stearic amide.
(2) by each component blender mixing in step (1), double screw extruder extruding pelletization is added in, that is, prepares plant Fibres composite polypropylene matrix.
(3) 2 parts of foaming agents, mixing, using injection are added in the plant fiber composite polypropylene matrix prepared in step (2) Fretting map plant fiber polypropylene composite material is made in technique.
Unexpanded, material after foaming mechanical property is tested respectively, the results are shown in Table 3.
Micro-foaming polypropylene composite material of plant fiber physical performance obtained by above-described embodiment is as follows：
The performance test of 1 embodiment 1 of table
The performance test of 2 embodiment 2 of table
The performance test of 3 embodiment 3 of table
Comparing embodiment 1-3 it is found that micro-foaming polypropylene composite material of plant fiber can loss of weight 10%-20%, and send out Material mechanical performance conservation rate is more than 60% before and after bubble, by section and exterior view can see distribution of cells uniformly, foaming Multiplying power is high, illustrates micro-foaming polypropylene composite material of plant fiber excellent in mechanical performance, exemplar aesthetic quality is good.

Claims (4)

1. a kind of micro-foaming polypropylene composite material of plant fiber, it is characterised in that：It calculates, gathers including high intensity according to the mass fraction 5-20 parts of propylene, 20-60 parts of high-flowability polypropylene, 5-30 parts of plant fiber, 5-20 parts of polyethylene, 1-5 parts of foaming agent, nucleation 0.1-1 parts of 0.1-1 parts of agent and dispersant is prepare raw material；The foaming agent is inorganic foaming agent NaHCO3。
2. a kind of micro-foaming polypropylene composite material of plant fiber according to claim 1, it is characterised in that：The height 230 DEG C/2.16kg of Melt strength polypropylene melt index is 0.5-5g/10min, and 230 DEG C of melting tension is 5-25g；Described 230 DEG C/2.16kg of its melt index of high-flowability polypropylene is 100-150g/10min.
3. a kind of micro-foaming polypropylene composite material of plant fiber according to claim 1 or 2, it is characterised in that：It is described Plant fiber is straw, maize straw, rice straw, bagasse, wood powder etc..
4. a kind of preparation method of micro-foaming polypropylene composite material of plant fiber as described in claim 1, it is characterised in that： Each component is taken by above-mentioned mass fraction, is included the following steps：
(1) high-strength polypropylene, high-flowability polypropylene, plant fiber, polyethylene, nucleating agent and dispersant are sufficiently mixed It is even；
(2) material of step (1) mixing is added in double screw extruder, the extruding pelletization at 180-190 DEG C, it is fine obtains plant Tie up composite polypropylene matrix；
(3) foaming agent is added in the plant fiber composite polypropylene matrix prepared in step (2) and is uniformly mixed, obtains fretting map Fretting map plant fiber polypropylene composite material is made using Shooting Technique in polypropylene composite material of plant fiber.
CN201810065824.5A 2018-01-23 2018-01-23 Micro-foaming polypropylene composite material of plant fiber and preparation method thereof Pending CN108219278A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110105673A (en) * 2019-02-03 2019-08-09 南京聚隆科技股份有限公司 Automobile-used wear-resisting plant fiber reinforced polypropylene micro-foaming material of one kind and preparation method thereof
CN111087696A (en) * 2019-12-30 2020-05-01 重庆普利特新材料有限公司 Lightweight, low-cost, low-odor and degradable natural fiber reinforced polypropylene reclaimed material and preparation method thereof
CN111518333A (en) * 2019-02-03 2020-08-11 南京聚隆科技股份有限公司 Mildew-proof plant fiber reinforced micro-foaming material for vehicle and preparation method thereof
CN113308017A (en) * 2021-07-09 2021-08-27 无锡会通轻质材料股份有限公司 Expanded polypropylene bead with excellent mechanical strength and molded part thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101932623A (en) * 2008-01-17 2010-12-29 巴斯夫欧洲公司 Modified olefin polymers
EP2338930A1 (en) * 2009-12-23 2011-06-29 Borealis AG Blownfilm grade showing superior stiffness, transparency and processing behaviour
CN102391579A (en) * 2011-09-30 2012-03-28 常熟市星源金属涂层厂 Foaming material prepared by blending plant straw filled polypropylene/polyethylene and preparation process
CN102971372A (en) * 2010-05-11 2013-03-13 博里利斯股份公司 High flowability long chain branched polypropylene
CN103772819A (en) * 2014-01-21 2014-05-07 江苏力达塑料托盘制造有限公司 Method for preparing polypropylene and rice hull powder foamed composite tray
CN105037952A (en) * 2015-06-29 2015-11-11 广州敬信高聚物科技有限公司 Polypropylene foam composition as well as preparation method and application thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101932623A (en) * 2008-01-17 2010-12-29 巴斯夫欧洲公司 Modified olefin polymers
EP2338930A1 (en) * 2009-12-23 2011-06-29 Borealis AG Blownfilm grade showing superior stiffness, transparency and processing behaviour
CN102971372A (en) * 2010-05-11 2013-03-13 博里利斯股份公司 High flowability long chain branched polypropylene
CN102391579A (en) * 2011-09-30 2012-03-28 常熟市星源金属涂层厂 Foaming material prepared by blending plant straw filled polypropylene/polyethylene and preparation process
CN103772819A (en) * 2014-01-21 2014-05-07 江苏力达塑料托盘制造有限公司 Method for preparing polypropylene and rice hull powder foamed composite tray
CN105037952A (en) * 2015-06-29 2015-11-11 广州敬信高聚物科技有限公司 Polypropylene foam composition as well as preparation method and application thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110105673A (en) * 2019-02-03 2019-08-09 南京聚隆科技股份有限公司 Automobile-used wear-resisting plant fiber reinforced polypropylene micro-foaming material of one kind and preparation method thereof
CN111518333A (en) * 2019-02-03 2020-08-11 南京聚隆科技股份有限公司 Mildew-proof plant fiber reinforced micro-foaming material for vehicle and preparation method thereof
CN111087696A (en) * 2019-12-30 2020-05-01 重庆普利特新材料有限公司 Lightweight, low-cost, low-odor and degradable natural fiber reinforced polypropylene reclaimed material and preparation method thereof
CN113308017A (en) * 2021-07-09 2021-08-27 无锡会通轻质材料股份有限公司 Expanded polypropylene bead with excellent mechanical strength and molded part thereof
CN113308017B (en) * 2021-07-09 2022-02-22 无锡会通轻质材料股份有限公司 Expanded polypropylene bead with excellent mechanical strength and molded part thereof

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