CN104163983A - Ramie fiber-reinforced polypropylene composite material and preparation process thereof - Google Patents
Ramie fiber-reinforced polypropylene composite material and preparation process thereof Download PDFInfo
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- CN104163983A CN104163983A CN201310185514.4A CN201310185514A CN104163983A CN 104163983 A CN104163983 A CN 104163983A CN 201310185514 A CN201310185514 A CN 201310185514A CN 104163983 A CN104163983 A CN 104163983A
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- Prior art keywords
- ramee
- reinforced polypropylene
- compound material
- composite material
- screw extruder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention belongs to the field of high-performance polymers, and particularly discloses a ramie fiber-reinforced polypropylene composite material and a preparation process thereof. Ramie fibers used in the process are treated by adopting a novel coating treatment technology, namely, a polymer which is highly compatible with the ramie fibers and a polypropylene resin is dissolved into a proper solvent, and the ramie fibers are soaked into the solution in order that the fiber surface is coated with the polymer. After the coated ramie fibers are compounded with the non-polar polypropylene resin, the compatibility between the ramie fibers and the polypropylene resin is improved since the molecular chain of the polymer in the coating solution is similar to the molecular chain of a polypropylene substrate, so that the interface bonding capability is improved. The prepared composite material has the characteristics of light weight, saving of energy, environmental friendliness and the like, lightweight design of products can be realized, and the composite material is widely applied to the fields of automobile parts, aerospace and the like. Moreover, the adopted twin-screw extrusion preparation process has the advantages of easiness, high production efficiency and stable product quality, and is suitable for industrial production.
Description
Technical field
The invention belongs to high-performance polymer field, be specifically related to a kind of ramee reinforced polypropylene compound material and preparation technology thereof.
Background technology
In recent years, because global energy and environmental problem become increasingly conspicuous, adopt the abundant natural plant fibre of nature to substitute traditional fibre and strengthen the concern that polymer matrix composites are subject to people gradually, the concept of ecological composite material (eco-composites) is arisen at the historic moment, and natural fiber is mainly hemp, flax, sisal hemp and ramie etc.Compare with conventional composite materials, the biodegradable and recycle of ecological composite material, environment compatibility and ecological aspect all there is comparative advantage.Wherein, sisal hemp has that density is little, specific tenacity and the advantage such as specific modulus is high, cheap, and price, less than half of glass fibre, only has 1/20 left and right of carbon fiber, has great application prospect preparing aspect vehicle body interior trim matrix material.
The research of relevant ramee/polymer matrix composites shows, at present, ramee in use also comes with some shortcomings, for example in ramee, there is great amount of hydroxy group, there is wetting ability, and most of polymkeric substance has hydrophobic nature, be unfavorable for the interface bonding of fiber and resin matrix.Therefore, when preparing matrix material, need to first to fiber surface, carry out modification, to remove pectin, hemicellulose and some the low molecular impurities in fiber, thereby strengthen cohesiveness and the stability between itself and matrix.
Summary of the invention
The object of the invention is to solve ramee wetting ability strong, poor with the interface adhesion of the acrylic resin matrix of hydrophobic nature, thus cause the mechanical property of ramee/polypropylene composite material lower, be unfavorable for the problems such as its application.Technical scheme of the present invention is the acrylic resin that the melting index that contains 65 ~ 85wt% is 10 ~ 25g/10min, the ramee of 10 ~ 25 wt%, the toughner of 5 ~ 10 wt%, the oxidation inhibitor of 0.1 ~ 0.5 wt%.
In the present invention, ramee used is processed through coated treatment technology, concrete implementation process is: the polymers soln of a certain amount of coated processing use is poured in reactor, again load weighted combing ramee bar is put into the reactor that coated treatment solution is housed and added heat soaking, until polymers soln, combing ramee bar is fully infiltrated and after solvent volatilizees completely, put into baking oven and dry to constant weight and obtain inventing required ramee.
The concrete steps of preparing ramee reinforced polypropylene compound material are as follows:
(1) will after the coated treatment technology processing of combing ramee strip adoption, be divided into two groups, first group keeps pencil, and second group is cut into chopped strand;
(2) according to formula, weigh two group of formula, put into high-speed mixer and mix, first group does not add ramee, and second group adds the short ramee of cutting;
(3) adopt twin screw extruder to prepare product of the present invention, each of twin screw extruder section barrel temperature should be controlled between 170 ~ 185 ℃, screw slenderness ratio 24 ~ 36.
(4) mixed material is poured in the hopper of twin screw extruder, through twin screw extruder extrude, secondary is extruded and is obtained granular ramee reinforced polypropylene compound material after the step such as water-cooled, oven dry, pelletizing, wherein, the pencil ramee of the first group of formula adds in twin screw extruder by glass fiber opening.
The present invention's ramee used adopts novel coated treatment technology, be about to ramee and acrylic resin consistency all preferably chlorine-containing polymer be dissolved in ethylene dichloride, and with this solution soaking ramee, make polymer overmold in fiber surface.Its principle is, ramee surface exists a large amount of polar group hydroxyls (OH), and on each chain link of chlorine-containing polymer molecule, contain nucleophilicity stronger-Cl.After chlorine-containing polymer is dissolved with ethylene dichloride, infiltrating ramee then heats, solvent is volatilized completely, suitably the chlorine-containing polymer of molecular weight will be coated on ramee surface equably, on the bonding surface of chlorine-containing polymer and ramee, on chlorine-containing polymer nucleophilicity strong-Cl be easy to fiber surface-OH is combined by intermolecular forces.After fiber after coated processing and non-polar polymer matrix PP are compound, because the C-C chain of chlorine-containing polymer used in the present invention is similar to the molecular chain of non-polar polymer matrix, consistency between them is fine, and bonding force is stronger, thereby improves Interface adhesive strength.This strata compound film is just equivalent to a compound surface, is combined with ramee with hydrogen bond in one side of film, and the other side and PP matrix combine together.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but the present invention is not limited to following examples.
Embodiment:
(1) ratio that is 1% in massfraction takes a certain amount of chlorine-containing polymer powder, joins in 1,2-ethylene dichloride solvent, and solution is heated to 80 ℃ of left and right and constantly stirs, and polymkeric substance is dissolved completely;
(2) with the polymers soln that configures, soak after combing ramee bar 15min and take out and extract, put into the baking oven of 80 ℃ and evenly scatter after drying and processing 2h and obtain ramee 1#, this ramee adds from the glass fiber opening of twin screw extruder;
(3) ramee 1# is cut into the staple fibre of 3 ~ 5mm, obtains ramee 2#, in this ramee and formula, after unclassified stores blend, from the hopper of twin screw extruder, add;
(4) according to two group of formula as shown in table 1, each component is weighed, and put into high-speed mixer and mix;
(5) adopt twin screw extruder to prepare product of the present invention, each process section temperature of twin screw extruder is 170 ℃, 175 ℃, 175 ℃, 175 ℃, 175 ℃, 180 ℃, 180 ℃, 185 ℃, screw slenderness ratio 3;
(6) mixed material is poured in the hopper of twin screw extruder, through twin screw extruder extrude, secondary is extruded and is obtained granular ramee reinforced polypropylene compound material after the step such as water-cooled, oven dry, pelletizing.Matrix material prepared by embodiment is injection molded into test master body by standard size, and concrete examination criteria and detected result are as shown in table 2.
The formula of table 1 ramee reinforced polypropylene compound material
| Material name | Polypropylene | Ramee 1# | Ramee 2# | Toughner | Oxidation inhibitor |
| Formula 1(weight ratio) | 65 | 25 | ? | 10 | 0.5 |
| Formula 2(weight ratio) | 65 | ? | 25 | 10 | 0.5 |
| Formula 3(weight ratio) | 85 | 10 | ? | 5 | 0.3 |
| Formula 4(weight ratio) | 85 | ? | 10 | 5 | 0.3 |
The detected result of table 2 ramee reinforced polypropylene compound material
| Project | Testing method | Unit | Formula 1 | Formula 2 | Formula 3 | Formula 4 |
| Simply supported beam unnotched impact strength | ISO 179 | KJ/m 2 | 56.8 is continuous | 59.3 is continuous | 47.9 is continuous | 49.6 is continuous |
| Simply supported beam notched Izod impact strength | ISO 179 | KJ/m 2 | 18.5 parts | 22.4 parts | 20.9 parts | 24.8 parts |
| Tensile strength | ISO 527 | MPa | 20.6 | 21.5 | 19.6 | 20.4 |
| Flexural strength | ISO 178 | MPa | 30.1 | 34.5 | 31.7 | 32.9 |
| Modulus in flexure | ISO 178 | MPa | 1156 | 1214 | 1054 | 1069 |
| Density | ISO 1183 | g/cm 3 | 0.926 | 0.932 | 0.916 | 0.918 |
Claims (6)
1. a ramee reinforced polypropylene compound material, is characterized in that: the acrylic resin that the melting index that contains 65 ~ 85wt% is 10 ~ 25g/10min, the ramee of 10 ~ 25wt%, the coupling agent of 5 ~ 10wt%, the oxidation inhibitor of 0.1 ~ 0.5wt%.
2. ramee reinforced polypropylene compound material according to claim 1, is characterized in that the combing ramee bar of described ramee for processing through coated treatment technology.
3. the combing ramee bar that the coated treatment technology of process according to claim 2 is processed, it is characterized in that coated treatment solution used is the polymers soln similar to polypropylene matrix molecular chain, be specially a kind of in chlorinatedpolyethylene-dichloroethane solution and polyvinyl chloride-dichloroethane solution.
4. ramee reinforced polypropylene compound material according to claim 1, it is characterized in that described oxidation inhibitor is four [methyl-β-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester, tricresyl phosphite [2,4-di-t-butyl phenyl ester], thio-2 acid two (octadecyl ester) and 1,3, one or several mixtures in 5-tri-(3,5-di-tert-butyl-4-hydroxyl benzyl) tricarbimide.
5. ramee reinforced polypropylene compound material according to claim 1, is characterized in that described toughner is a kind of in terpolymer EP rubber, ethylene-octene copolymer.
6. the preparation technology of ramee reinforced polypropylene compound material according to claim 1 is:
(1) ratio that is 1% in massfraction takes a certain amount of chlorine-containing polymer powder, joins in 1,2-ethylene dichloride solvent, and solution is heated to 80 ℃ of left and right and constantly stirs, and polymkeric substance is dissolved completely;
(2) with the polymers soln that configures, soak after combing ramee bar 15min and take out and extract, put into the baking oven of 80 ℃ and evenly scatter after drying and processing 2h and obtain ramee;
(3) according to formula, each component is weighed, and put into high-speed mixer and mix;
(4) adopt twin screw extruder to prepare product of the present invention, each process section temperature of twin screw extruder is 170 ℃, 175 ℃, 175 ℃, 175 ℃, 175 ℃, 180 ℃, 180 ℃, 185 ℃, screw slenderness ratio 36;
(5) mixed material is poured in the hopper of twin screw extruder, through twin screw extruder extrude, secondary is extruded and is obtained granular ramee reinforced polypropylene compound material after the step such as water-cooled, oven dry, pelletizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310185514.4A CN104163983A (en) | 2013-05-20 | 2013-05-20 | Ramie fiber-reinforced polypropylene composite material and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310185514.4A CN104163983A (en) | 2013-05-20 | 2013-05-20 | Ramie fiber-reinforced polypropylene composite material and preparation process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104163983A true CN104163983A (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310185514.4A Pending CN104163983A (en) | 2013-05-20 | 2013-05-20 | Ramie fiber-reinforced polypropylene composite material and preparation process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674285A (en) * | 2017-10-25 | 2018-02-09 | 湖南工业大学 | A kind of sisal fiber polyolefin composite foam material for coating processing and preparation method thereof |
| CN111410791A (en) * | 2020-05-18 | 2020-07-14 | 四川锦盛瑞科技发展有限公司 | Lubricating inorganic fiber reinforced plastic master batch and preparation method thereof |
| CN112694666A (en) * | 2020-12-23 | 2021-04-23 | 陈子强 | Antistatic high-toughness plastic and preparation method thereof |
| CN112778785A (en) * | 2020-12-24 | 2021-05-11 | 金发科技股份有限公司 | Plant fiber master batch and preparation method and application thereof |
| CN114231046A (en) * | 2021-12-09 | 2022-03-25 | 金发科技股份有限公司 | High-strength high-heat-resistance wood-plastic composite material and preparation method thereof |
Citations (2)
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| CN102382374A (en) * | 2011-09-28 | 2012-03-21 | 深圳市科聚新材料有限公司 | Fiber reinforced polypropylene (PP) automobile interior decoration material and preparation method thereof |
| CN103102595A (en) * | 2013-03-01 | 2013-05-15 | 合肥杰事杰新材料股份有限公司 | Jute fiber/polypropylene composite and preparation method thereof |
-
2013
- 2013-05-20 CN CN201310185514.4A patent/CN104163983A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102382374A (en) * | 2011-09-28 | 2012-03-21 | 深圳市科聚新材料有限公司 | Fiber reinforced polypropylene (PP) automobile interior decoration material and preparation method thereof |
| CN103102595A (en) * | 2013-03-01 | 2013-05-15 | 合肥杰事杰新材料股份有限公司 | Jute fiber/polypropylene composite and preparation method thereof |
Non-Patent Citations (2)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674285A (en) * | 2017-10-25 | 2018-02-09 | 湖南工业大学 | A kind of sisal fiber polyolefin composite foam material for coating processing and preparation method thereof |
| CN107674285B (en) * | 2017-10-25 | 2020-06-19 | 湖南工业大学 | Coated sisal fiber polyolefin composite foam material and preparation method thereof |
| CN111410791A (en) * | 2020-05-18 | 2020-07-14 | 四川锦盛瑞科技发展有限公司 | Lubricating inorganic fiber reinforced plastic master batch and preparation method thereof |
| CN112694666A (en) * | 2020-12-23 | 2021-04-23 | 陈子强 | Antistatic high-toughness plastic and preparation method thereof |
| CN112778785A (en) * | 2020-12-24 | 2021-05-11 | 金发科技股份有限公司 | Plant fiber master batch and preparation method and application thereof |
| CN114231046A (en) * | 2021-12-09 | 2022-03-25 | 金发科技股份有限公司 | High-strength high-heat-resistance wood-plastic composite material and preparation method thereof |
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Application publication date: 20141126 |