CN111793285A - Plant fiber modified polypropylene automobile special material and preparation method thereof - Google Patents
Plant fiber modified polypropylene automobile special material and preparation method thereof Download PDFInfo
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- CN111793285A CN111793285A CN202010792169.0A CN202010792169A CN111793285A CN 111793285 A CN111793285 A CN 111793285A CN 202010792169 A CN202010792169 A CN 202010792169A CN 111793285 A CN111793285 A CN 111793285A
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- 239000000835 fiber Substances 0.000 title claims abstract description 100
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 91
- -1 polypropylene Polymers 0.000 title claims abstract description 91
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 91
- 239000000463 material Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000000314 lubricant Substances 0.000 claims abstract description 31
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004611 light stabiliser Substances 0.000 claims abstract description 17
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 17
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 14
- 241000196324 Embryophyta Species 0.000 claims description 84
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 25
- 239000007822 coupling agent Substances 0.000 claims description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 14
- 239000011707 mineral Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 241000209094 Oryza Species 0.000 claims description 9
- 235000007164 Oryza sativa Nutrition 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 235000009566 rice Nutrition 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 208000016261 weight loss Diseases 0.000 claims description 5
- 230000004580 weight loss Effects 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 3
- 235000013311 vegetables Nutrition 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 235000013339 cereals Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
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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
- C08L23/14—Copolymers of propene
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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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- 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)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a plant fiber modified polypropylene automobile special material and a preparation method thereof, wherein the material comprises, by weight, 20-50 parts of modified plant fiber, 15-40 parts of homopolymerized polypropylene, 20-30 parts of copolymerization polypropylene, 5-10 parts of polyolefin elastomer, 5-15 parts of talcum powder, 0.2-0.6 part of antioxidant, 0.1-0.3 part of light stabilizer, 0.1-0.3 part of lubricant and 0.5-1.5 parts of toner. The polypropylene material has the characteristics of high mechanical property and good processing and forming performance; in addition, the product has the characteristics of fragrant smell, special appearance, low carbon, environmental protection and low preparation cost.
Description
Technical Field
The invention relates to a polypropylene material and a preparation method thereof, in particular to a plant fiber modified polypropylene automobile special material and a preparation method thereof.
Background
The polypropylene material is a thermoplastic resin with wide application, and is applied to the fields of household appliances, daily necessities, automotive upholsteries and the like.
The fiber reinforced polypropylene is prepared by mixing a fiber material into polypropylene, and has stronger mechanical property. However, due to the incorporation of fibers, the polypropylene material has a greatly reduced processing and forming performance, and is difficult to adapt to a mold with a complex structure.
Therefore, how to make the plant fiber reinforced polypropylene material have better processing and forming properties on the premise of ensuring the improvement of the mechanical properties of the plant fiber reinforced polypropylene material is a main technical problem to be solved at present.
Disclosure of Invention
The invention aims to provide a plant fiber modified polypropylene automobile special material and a preparation method thereof. The polypropylene material has the characteristics of high mechanical property and good processing and forming performance; in addition, the product has the characteristics of fragrant smell, special appearance, low carbon, environmental protection and low preparation cost.
The technical scheme of the invention is as follows: a plant fiber modified polypropylene automobile special material comprises, by weight, 20-50 parts of modified plant fiber, 15-40 parts of homopolymerized polypropylene, 20-30 parts of copolymerization polypropylene, 5-10 parts of polyolefin elastomer, 5-15 parts of 2500 plus 10000 mesh talcum powder, 0.2-0.6 part of antioxidant, 0.1-0.3 part of light stabilizer, 0.1-0.3 part of lubricant and 0.5-1.5 parts of toner.
The plant fiber modified polypropylene automobile special material comprises, by weight, 30-40 parts of modified plant fiber, 25-30 parts of homopolymerized polypropylene, 22-28 parts of copolymerization polypropylene, 6-8 parts of polyolefin elastomer, 8-12 parts of 2500-10000-mesh talcum powder, 0.3-0.5 part of antioxidant, 0.15-0.25 part of light stabilizer, 0.15-0.25 part of lubricant and 0.7-1.2 parts of toner.
The plant fiber modified polypropylene automobile special material comprises, by weight, 35 parts of modified plant fiber, 28 parts of homopolymerized polypropylene, 25 parts of copolymerization polypropylene, 7 parts of polyolefin elastomer, 10 parts of 2500-10000-mesh talcum powder, 0.4 part of antioxidant, 0.2 part of light stabilizer, 0.2 part of lubricant and 1 part of toner.
The plant fiber modified polypropylene automobile special material comprises, by weight, 60-75 parts of 10-300-mesh rice hull fiber, 5-25 parts of 1250-10000-mesh mineral powder, 2-10 parts of a coupling agent, 1-8 parts of glycerol and 1-3 parts of a lubricant.
According to the plant fiber modified polypropylene automobile special material, the modified plant fiber comprises, by weight, 70 parts of 10-300-mesh rice hull fiber, 15 parts of 1250-10000-mesh mineral powder, 6 parts of a coupling agent, 5 parts of glycerol and 2 parts of a lubricant.
The preparation method of the plant fiber modified polypropylene automobile special material comprises the following steps:
preparation of modified plant fiber
1) Mixing plant fiber and mineral powder uniformly, and heating to 90-110 deg.C;
2) under the high-speed stirring of 2000r/min, adding the coupling agent into the mixture while stirring, and after the addition is finished, controlling the material temperature to be 90-110 ℃ and stirring for 30-40 min;
3) after stirring, adding glycerol and lubricant, and stirring for 10-15min at the material temperature of 90-110 ℃;
4) then stopping heating, stirring at low speed of 100r/min, and cooling to room temperature for later use;
preparation of (II) plant fiber modified polypropylene automobile special material
Modified plant fiber, homopolymerized polypropylene, copolymerized polypropylene, polyolefin elastomer, talcum powder, antioxidant, light stabilizer, lubricant and toner are prepared, blended and modified by a parallel double-screw extruder with a length-diameter ratio of 72, extruded, cooled by water, granulated and dried.
In the preparation method of the plant fiber modified polypropylene automobile special material, the extrusion temperature of the double-screw extruder is 160-.
In the preparation method of the plant fiber modified polypropylene automobile special material, the drying is circular drying, the drying temperature is 100 ℃, and the drying time is 2-4 hours.
According to the preparation method of the plant fiber modified polypropylene automobile special material, when the plant fiber modified polypropylene automobile special material is prepared, materials are weighed and fed by adopting a weight-loss type automatic feeding system.
The invention has the advantages of
The plant fiber is doped into the polypropylene material, and has higher mechanical property as the traditional fiber reinforced polypropylene material, and the experimental result shows that: the material of the invention has the tensile strength of 17-21MPa, the tensile strain at break of 30-100 percent, the flexural modulus of 1300-1700MPa and the impact strength of 10-25KJ/m2The heat distortion temperature is 90-110 ℃, the heat aging resistance is 150 ℃, and the heat aging resistance is more than or equal to 500 h.
Meanwhile, the plant fiber is modified, the doping amount is controlled, the problem of great reduction of the processing and forming performance is avoided on the basis of improving the mechanical performance, the melt flow rate of the material is 15-30g/10min, the material has high processing and forming performance, and can be processed and formed in forming dies with complex structures, and the application of the fiber reinforced polypropylene material is expanded.
In addition, the plant fiber is selected as the reinforcing fiber, and substances for adsorbing pungent odor are simultaneously doped, so that the prepared polypropylene material has natural plant fragrance; the grains of the plant fiber are special, so that a product with special grains on the surface can be obtained when the product is prepared, and the surface of the fiber grains does not need to be sprayed again or coated; in addition, the processing process of the plant fiber is low-carbon and environment-friendly, and the cost is low.
The polypropylene material can be injection molded in a complex mold structure at the temperature of 160-180 ℃, and the energy consumption is low.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Examples of the invention
Example 1: a plant fiber modified polypropylene automobile special material comprises 20 parts of modified plant fiber, 15 parts of homopolymerized polypropylene, 20 parts of copolymerization polypropylene, 5 parts of polyolefin elastomer, 5 parts of 2500-10000 mesh talcum powder, 0.2 part of antioxidant, 0.1 part of light stabilizer, 0.1 part of lubricant and 0.5 part of toner in parts by weight; wherein the modified plant fiber comprises 60 parts of 10-300 mesh rice hull fiber, 5 parts of 1250-10000 mesh mineral powder, 2 parts of coupling agent, 1 part of glycerol and 1 part of lubricant in parts by weight.
Example 2: a plant fiber modified polypropylene automobile special material comprises 50 parts of modified plant fiber, 40 parts of homopolymerized polypropylene, 30 parts of copolymerization polypropylene, 10 parts of polyolefin elastomer, 15 parts of 2500-10000 mesh talcum powder, 0.6 part of antioxidant, 0.3 part of light stabilizer, 0.3 part of lubricant and 1.5 parts of toner in parts by weight; wherein the modified plant fiber comprises 75 parts by weight of 10-300 mesh rice hull fiber, 5 parts by weight of 1250-10000 mesh mineral powder, 10 parts by weight of coupling agent, 8 parts by weight of glycerol and 3 parts by weight of lubricant.
Example 3: a plant fiber modified polypropylene automobile special material comprises 30 parts of modified plant fiber, 25 parts of homopolymerized polypropylene, 22 parts of copolymerization polypropylene, 6 parts of polyolefin elastomer, 8 parts of 2500-10000 meshes talcum powder, 0.3 part of antioxidant, 0.15 part of light stabilizer, 0.15 part of lubricant and 0.7 part of toner in parts by weight; wherein the modified plant fiber comprises 60 parts of 10-300 mesh rice hull fiber, 5 parts of 1250-10000 mesh mineral powder, 2 parts of coupling agent, 1 part of glycerol and 1 part of lubricant in parts by weight.
Example 4: a plant fiber modified polypropylene automobile special material comprises 40 parts of modified plant fiber, 30 parts of homopolymerized polypropylene, 28 parts of copolymerization polypropylene, 8 parts of polyolefin elastomer, 12 parts of 2500-10000 meshes talcum powder, 0.5 part of antioxidant, 0.25 part of light stabilizer, 0.25 part of lubricant and 1.2 parts of toner in parts by weight; wherein the modified plant fiber comprises 75 parts by weight of 10-300 mesh rice hull fiber, 25 parts by weight of 1250-10000 mesh mineral powder, 10 parts by weight of coupling agent, 8 parts by weight of glycerol and 3 parts by weight of lubricant.
Example 5: a plant fiber modified polypropylene automobile special material comprises, by weight, 35 parts of modified plant fiber, 28 parts of homopolymerized polypropylene, 25 parts of copolymerization polypropylene, 7 parts of polyolefin elastomer, 10 parts of talcum powder, 0.4 part of antioxidant, 0.2 part of light stabilizer, 0.2 part of lubricant and 1 part of toner; wherein the modified plant fiber comprises 70 parts of 10-300 mesh rice hull fiber, 15 parts of 1250-10000 mesh mineral powder, 6 parts of coupling agent, 5 parts of glycerol and 2 parts of lubricant according to parts by weight.
Example 6: a preparation method of a plant fiber modified polypropylene automobile special material is characterized by comprising the following steps:
preparation of modified plant fiber
1) Uniformly mixing the plant fiber and the mineral powder, and heating to 90 ℃;
2) under the high-speed stirring of 2000r/min, adding the coupling agent into the mixture while stirring, and after the addition is finished, controlling the material temperature to be 90 ℃ and stirring for 40 min;
3) after stirring, adding glycerol and lubricant, and stirring for 15min at the material temperature of 90 ℃;
4) then stopping heating, stirring at low speed of 100r/min, and cooling to room temperature for later use;
preparation of (II) plant fiber modified polypropylene automobile special material
Preparing modified plant fiber, homopolymerized polypropylene, copolymerization polypropylene, polyolefin elastomer, talcum powder, antioxidant, light stabilizer, lubricant and toner, blending and modifying by using a 72-machine parallel double-screw extruder with the length-diameter ratio, extruding, water-cooling, granulating and drying at 100 ℃ for 3 hours after modification at the temperature of 170 ℃, the vacuum degree of less than or equal to-0.09 MPa, the rotating speed of a main machine of 520r/min and the production efficiency of 500 kg/h; when the plant fiber modified polypropylene automobile special material is prepared, each material is subjected to material weighing feeding by adopting a weight-loss type automatic feeding system.
Example 7: a preparation method of a plant fiber modified polypropylene automobile special material is characterized by comprising the following steps:
preparation of modified plant fiber
1) Mixing plant fiber and mineral powder uniformly, and heating to 110 ℃;
2) under the high-speed stirring of 2000r/min, adding the coupling agent into the mixture while stirring, and after the addition is finished, controlling the material temperature to be 110 ℃ and stirring for 30 min;
3) after stirring, adding glycerol and lubricant, and stirring for 10min at the material temperature of 110 ℃;
4) then stopping heating, stirring at low speed of 100r/min, and cooling to room temperature for later use;
preparation of (II) plant fiber modified polypropylene automobile special material
Preparing modified plant fiber, homopolymerized polypropylene, copolymerization polypropylene, polyolefin elastomer, talcum powder, antioxidant, light stabilizer, lubricant and toner, blending and modifying by using a 72-machine parallel double-screw extruder with the length-diameter ratio, extruding, water-cooling and granulating after modification at 160 ℃, the vacuum degree is less than or equal to-0.09 MPa, the rotating speed of a main machine is 45r/min and the production efficiency is set to 400kg/h, and drying for 4h at 100 ℃; when the plant fiber modified polypropylene automobile special material is prepared, each material is subjected to material weighing feeding by adopting a weight-loss type automatic feeding system.
Example 8: a preparation method of a plant fiber modified polypropylene automobile special material is characterized by comprising the following steps:
preparation of modified plant fiber
1) Uniformly mixing the plant fiber and the mineral powder, and heating to 100 ℃;
2) under the high-speed stirring of 2000r/min, adding the coupling agent into the mixture while stirring, and after the addition is finished, controlling the material temperature to be 100 ℃ and stirring for 35 min;
3) after stirring, adding glycerol and lubricant, and stirring for 12min at the material temperature of 100 ℃;
4) then stopping heating, stirring at low speed of 100r/min, and cooling to room temperature for later use;
preparation of (II) plant fiber modified polypropylene automobile special material
Preparing modified plant fiber, homopolymerized polypropylene, copolymerization polypropylene, polyolefin elastomer, talcum powder, antioxidant, light stabilizer, lubricant and toner, blending and modifying by using a 72-machine parallel double-screw extruder with the length-diameter ratio, extruding, water-cooling, granulating and drying for 2 hours at 100 ℃ after modification at 180 ℃, the vacuum degree is less than or equal to-0.09 MPa, the rotating speed of a main machine is 600r/min and the production efficiency is set to 600 kg/h; when the plant fiber modified polypropylene automobile special material is prepared, each material is subjected to material weighing feeding by adopting a weight-loss type automatic feeding system.
The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (9)
1. A plant fiber modified polypropylene automobile special material is characterized in that: according to the weight portion, the modified plant fiber composite material comprises 20-50 portions of modified plant fiber, 15-40 portions of homopolymerized polypropylene, 20-30 portions of copolymerization polypropylene, 5-10 portions of polyolefin elastomer, 5-15 portions of 2500-10000 meshes talcum powder, 0.2-0.6 portion of antioxidant, 0.1-0.3 portion of light stabilizer, 0.1-0.3 portion of lubricant and 0.5-1.5 portions of toner.
2. The plant fiber modified polypropylene automobile special material as claimed in claim 1, wherein: according to the weight portion, the modified plant fiber composite material comprises 30-40 portions of modified plant fiber, 25-30 portions of homopolymerized polypropylene, 22-28 portions of copolymerization polypropylene, 6-8 portions of polyolefin elastomer, 8-12 portions of 2500-10000 meshes talcum powder, 0.3-0.5 portion of antioxidant, 0.15-0.25 portion of light stabilizer, 0.15-0.25 portion of lubricant and 0.7-1.2 portions of toner.
3. The plant fiber modified polypropylene automobile special material as claimed in claim 2, wherein: according to the weight portion, the modified plant fiber modified polypropylene composite material comprises 35 portions of modified plant fiber, 28 portions of homopolymerized polypropylene, 25 portions of copolymerized polypropylene, 7 portions of polyolefin elastomer, 10 portions of 2500-10000-mesh talcum powder, 0.4 portion of antioxidant, 0.2 portion of light stabilizer, 0.2 portion of lubricant and 1 portion of toner.
4. The vegetable fiber-modified polypropylene automobile specific material according to any one of claims 1 to 3, wherein: the modified plant fiber comprises, by weight, 60-75 parts of 10-300-mesh rice hull fiber, 5-25 parts of 1250-10000-mesh mineral powder, 2-10 parts of a coupling agent, 1-8 parts of glycerol and 1-3 parts of a lubricant.
5. The plant fiber modified polypropylene material as claimed in claim 4, wherein the plant fiber modified polypropylene material comprises: the modified plant fiber comprises, by weight, 70 parts of 10-300-mesh rice hull fiber, 15 parts of 1250-10000-mesh mineral powder, 6 parts of a coupling agent, 5 parts of glycerol and 2 parts of a lubricant.
6. The preparation method of the plant fiber modified polypropylene automobile special material according to any one of claims 1 to 5, characterized by comprising the following steps:
preparation of modified plant fiber
1) Mixing plant fiber and mineral powder uniformly, and heating to 90-110 deg.C;
2) under the high-speed stirring of 2000r/min, adding the coupling agent into the mixture while stirring, and after the addition is finished, controlling the material temperature to be 90-110 ℃ and stirring for 30-40 min;
3) after stirring, adding glycerol and lubricant, and stirring for 10-15min at the material temperature of 90-110 ℃;
4) then stopping heating, stirring at low speed of 100r/min, and cooling to room temperature for later use;
preparation of (II) plant fiber modified polypropylene automobile special material
Modified plant fiber, homopolymerized polypropylene, copolymerized polypropylene, polyolefin elastomer, talcum powder, antioxidant, light stabilizer, lubricant and toner are prepared, blended and modified by a parallel double-screw extruder with a length-diameter ratio of 72, extruded, cooled by water, granulated and dried.
7. The preparation method of the plant fiber modified polypropylene automobile special material as claimed in claim 6, wherein the preparation method comprises the following steps: the extrusion temperature of the double-screw extruder is 160-.
8. The preparation method of the plant fiber modified polypropylene automobile special material as claimed in claim 6, wherein the preparation method comprises the following steps: the drying is a circulating drying, the drying temperature is 100 ℃, and the drying time is 2-4 h.
9. The preparation method of the plant fiber modified polypropylene automobile special material as claimed in claim 6, wherein the preparation method comprises the following steps: when the plant fiber modified polypropylene automobile special material is prepared, each material is subjected to material weighing feeding by adopting a weight-loss type automatic feeding system.
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| CN202010792169.0A CN111793285A (en) | 2020-08-08 | 2020-08-08 | Plant fiber modified polypropylene automobile special material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117209897A (en) * | 2023-10-13 | 2023-12-12 | 四川鸿昌塑胶工业有限公司 | High-ductility plastic-suction molding composite material and preparation method thereof |
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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 |
| CN103937278A (en) * | 2014-05-13 | 2014-07-23 | 江苏锦禾高新科技股份有限公司 | 3D printing wood-plastic composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117209897A (en) * | 2023-10-13 | 2023-12-12 | 四川鸿昌塑胶工业有限公司 | High-ductility plastic-suction molding composite material and preparation method thereof |
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Application publication date: 20201020 |