CN115612202A - Fibrilia reinforced polypropylene composite material and preparation method thereof - Google Patents
Fibrilia reinforced polypropylene composite material and preparation method thereof Download PDFInfo
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- CN115612202A CN115612202A CN202211101100.4A CN202211101100A CN115612202A CN 115612202 A CN115612202 A CN 115612202A CN 202211101100 A CN202211101100 A CN 202211101100A CN 115612202 A CN115612202 A CN 115612202A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 138
- -1 polypropylene Polymers 0.000 title claims abstract description 138
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 138
- 239000002131 composite material Substances 0.000 title claims abstract description 108
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 50
- 239000000314 lubricant Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 25
- 239000000835 fiber Substances 0.000 claims description 17
- 239000012745 toughening agent Substances 0.000 claims description 14
- 239000000155 melt Substances 0.000 claims description 13
- 229940057995 liquid paraffin Drugs 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000001993 wax Substances 0.000 claims description 8
- 238000004898 kneading Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000010786 composite waste Substances 0.000 claims description 4
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 4
- 244000198134 Agave sisalana Species 0.000 claims description 3
- 240000000491 Corchorus aestuans Species 0.000 claims description 3
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 3
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 3
- 240000000797 Hibiscus cannabinus Species 0.000 claims description 3
- 240000006240 Linum usitatissimum Species 0.000 claims description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 26
- 239000000463 material Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000001746 injection moulding Methods 0.000 description 7
- 244000025254 Cannabis sativa Species 0.000 description 5
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 5
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 5
- 235000009120 camo Nutrition 0.000 description 5
- 235000005607 chanvre indien Nutrition 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000011487 hemp Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 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 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011246 composite particle Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000007858 starting material 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
-
- 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
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
-
- 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
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention belongs to the technical field of waste recovery, and particularly relates to a fibrilia reinforced polypropylene composite material and a preparation method thereof. The fibrilia reinforced polypropylene composite material provided by the invention comprises the following components in parts by mass: 30-45 parts of fibrilia reinforced polypropylene composite material waste, 55-70 parts of polypropylene, 1-5 parts of compatibilizer and 0.5-5 parts of lubricant. The waste material of the fibrilia reinforced polypropylene composite material is used as the raw material, so that the waste material of the fibrilia reinforced polypropylene composite material is recycled; meanwhile, the polypropylene compensates and improves the loss of the mechanical property of the fibrilia reinforced polypropylene composite material, and the compatibilizer and the lubricant are used for assisting in improving the modification effect of the polypropylene on the waste of the fibrilia reinforced polypropylene composite material.
Description
Technical Field
The invention belongs to the technical field of waste recovery, and particularly relates to a fibrilia reinforced polypropylene composite material and a preparation method thereof.
Background
With the rapid development of the automobile industry and field, the requirements for automobile manufacturing materials are also higher, and at present, the light weight and recyclability have become the main trends of the development of automobile manufacturing materials. Therefore, the fibrilia material is increasingly applied to the field of automobile manufacturing materials, especially the manufacturing of automobile interior trim part materials due to good light weight, good mechanical property, strong processability and good environmental protection property.
The fibrilia composite material is usually manufactured by adopting fibrilia and thermoplastic resin through hot pressing or injection molding, so that the obtained fibrilia composite material has the excellent characteristics of environment friendliness, low price, outstanding mechanical property and the like of the fibrilia, can relieve the shortage of petrochemical resources and promote the development of automobile preparation materials to green, low carbon and sustainable directions. At present, the fibrilia reinforced polypropylene composite material is widely applied to the manufacturing and application aspects of parts such as automobile door trim panels, roof guards, instrument panels, seat backs, luggage trays, spare wheel covers, upright post trim parts and the like.
At present, the fibrilia reinforced polypropylene composite material for manufacturing the automotive interior part product is mainly manufactured by adopting a hot press molding method, and then specific part products are manufactured according to the shapes and forms of different products. However, when the fibrilia reinforced polypropylene laminated composite material formed by hot pressing is used for manufacturing specific part products, a large amount of leftover materials are generated, and the part products generate a large amount of waste products due to the reduction of tensile property and yield strength after long-term use, so that if the fibrilia reinforced polypropylene laminated composite material is directly discarded, not only is the environment pollution easily caused, but also the waste of the fibrilia reinforced polypropylene composite material is caused, and the manufacturing cost is increased.
Disclosure of Invention
The composite material provided by the invention takes the waste of the fibrilia reinforced polypropylene composite material as a raw material, realizes recycling of the fibrilia reinforced polypropylene composite material, has good tensile property, yield strength and processability, and can be recycled in automobile interior trim part materials.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a fibrilia reinforced polypropylene composite material which comprises the following components in parts by mass:
30-45 parts of waste fibrilia reinforced polypropylene composite material, 55-70 parts of polypropylene, 1-5 parts of compatibilizer and 0.5-5 parts of lubricant.
Preferably, the coating also comprises 0.1 to 5 parts of toughening agent.
Preferably, the hemp fibers in the hemp fiber reinforced polypropylene composite waste material include one or more of jute fibers, flax fibers, sisal fibers and kenaf fibers.
Preferably, the mass percentage of the fibrilia in the waste material of the fibrilia reinforced polypropylene composite material is 30-50 wt%.
Preferably, the melt index of the polypropylene is 10 to 20g/10min.
Preferably, the compatibilizer comprises polypropylene grafted maleic anhydride and/or polypropylene wax.
Preferably, the lubricant comprises one or more of liquid paraffin, polypropylene wax and talc.
Preferably, the toughening agent comprises a polyolefin elastomer and/or ethylene propylene diene monomer.
The invention provides a preparation method of a fibrilia reinforced polypropylene composite material, which comprises the following steps:
mixing the waste fibrilia reinforced polypropylene composite material, polypropylene, a compatibilizer and a lubricant to obtain a mixture;
and melting and mixing the mixture, and then extruding to obtain the composite material.
Preferably, the temperature of the melt mixing is 180-200 ℃, the melt mixing and the extrusion are both carried out by adopting a double-screw extruder, and the screw rotating speed of the double-screw extruder during the melt mixing is 300-500 rpm.
The invention provides a fibrilia reinforced polypropylene composite material which comprises the following components in parts by mass: 30-45 parts of fibrilia reinforced polypropylene composite material waste, 55-70 parts of polypropylene, 1-5 parts of compatibilizer and 0.5-5 parts of lubricant. The composite material provided by the invention takes the fibrilia reinforced polypropylene composite material waste as one of the raw materials, realizes the recycling of the fibrilia reinforced polypropylene composite material waste, changes waste into valuable, and reduces the manufacturing cost of the composite material; meanwhile, the loss of the mechanical property of the fibrilia reinforced polypropylene composite material is compensated and improved by the polypropylene, the improvement effect of the mechanical property of the waste material of the fibrilia reinforced polypropylene composite material by the polypropylene is improved by the compatibilizer, and finally the glossiness of the composite material is improved by the lubricant; in conclusion, within the range of the above mass parts, the composite material provided by the invention realizes compensation of the loss of mechanical properties of the waste of the fibrilia reinforced polypropylene composite material, has good tensile property, yield strength and processability, and can be reused in automobile interior trim parts.
Furthermore, the composite material provided by the invention also comprises 0.1-5 parts of a toughening agent. The composite material provided by the invention further compensates and improves the mechanical property loss of the waste material of the fibrilia reinforced polypropylene composite material by adding the toughening agent component, thereby further improving the mechanical property of the composite material.
The invention provides a preparation method of a fibrilia reinforced polypropylene composite material, which comprises the following steps: mixing the fibrilia reinforced polypropylene composite material waste, polypropylene, a compatibilizer and a lubricant to obtain a mixture; and melting and mixing the mixture, and then extruding to obtain the composite material. The preparation method provided by the invention is simple and suitable for industrial production.
Detailed Description
The invention provides a fibrilia reinforced polypropylene composite material which comprises the following components in parts by mass:
30-45 parts of waste fibrilia reinforced polypropylene composite material, 55-70 parts of polypropylene, 1-5 parts of compatibilizer and 0.5-5 parts of lubricant.
In the present invention, all the preparation starting materials/components are commercially available products well known to those skilled in the art unless otherwise specified.
The fibrilia reinforced polypropylene composite material provided by the invention comprises 30-45 parts by mass of waste fibrilia reinforced polypropylene composite material, and particularly preferably 30 or 40 parts by mass of waste fibrilia reinforced polypropylene composite material.
In the present invention, the hemp fibers in the hemp fiber reinforced polypropylene composite waste preferably include one or more of jute fibers, flax fibers, sisal fibers and kenaf fibers.
In the invention, the mass percentage content of the fibrilia in the waste material of fibrilia reinforced polypropylene composite material is preferably 30-50 wt%, and particularly preferably 50wt%.
The fibrilia-reinforced polypropylene composite material provided by the invention takes 30-45 parts of waste material of the fibrilia-reinforced polypropylene composite material as raw material, thereby not only realizing the recycling of the waste material of the fibrilia-reinforced polypropylene composite material, but also reducing the cost of the composite material.
Based on the mass parts of the waste materials of the fibrilia reinforced polypropylene composite material, the fibrilia reinforced polypropylene composite material provided by the invention comprises 55-70 parts of polypropylene, preferably 60-70 parts, and particularly preferably 60 parts, 70 parts, 67 parts or 65 parts.
In the present invention, the melt index of the polypropylene is preferably 10 to 20g/10min, and preferably 12 to 15g/10min.
In the present invention, the heat polypropylene is used as a plastic resin, which can compensate and improve the mechanical properties of the waste material loss of the fibrilia reinforced polypropylene composite material.
Based on the mass portion of the waste fibrilia-reinforced polypropylene composite material, the waste fibrilia-reinforced polypropylene composite material provided by the invention comprises 1-5 parts of compatibilizer, preferably 3 parts.
In the present invention, the compatibilizer preferably comprises polypropylene grafted maleic anhydride and/or polypropylene wax, more preferably polypropylene grafted maleic anhydride or polypropylene wax.
In the invention, the compatibilizer is in the range of the mass parts, so that the compatibility between the fibrilia reinforced polypropylene composite material waste and polypropylene can be improved.
Based on the mass parts of the waste materials of the fibrilia reinforced polypropylene composite material, the fibrilia reinforced polypropylene composite material provided by the invention comprises 0.5-5 parts of lubricant alkene, preferably 5 parts.
In the present invention, the lubricant preferably includes one or more of liquid paraffin, polypropylene wax and talc powder, and more preferably, liquid paraffin, polypropylene wax or talc powder.
In the present invention, the lubricant can improve the gloss property of the composite waste within the above-mentioned mass part range.
Based on the mass parts of the waste materials of the fibrilia reinforced polypropylene composite material, the fibrilia reinforced polypropylene composite material provided by the invention preferably further comprises 0.1-5 parts of a toughening agent, more preferably 3-5 parts, and particularly preferably 3 parts or 5 parts.
In the present invention, the toughening agent preferably comprises a polyolefin elastomer and/or an ethylene propylene diene monomer, and more preferably a polyolefin elastomer or an ethylene propylene diene monomer.
In the invention, the toughening agent can further improve the mechanical property of the composite material.
The invention provides a preparation method of a fibrilia reinforced polypropylene composite material, which comprises the following steps:
mixing the fibrilia reinforced polypropylene composite material waste, polypropylene, a compatibilizer and a lubricant to obtain a mixture;
and extruding the mixture after melting and mixing to obtain the fibrilia reinforced polypropylene composite material.
According to the invention, the fibrilia reinforced polypropylene composite material waste, the polypropylene, the compatibilizer and the lubricant are mixed to obtain a mixture.
In the present invention, the mixed raw materials preferably further include a toughening agent.
In the present invention, the above-mentioned raw materials are preferably dried in the present invention before the mixing.
In the present invention, the drying preferably includes: carrying out first drying on the fibrilia reinforced polypropylene composite material waste and polypropylene; and carrying out secondary drying on the compatibilizer and the lubricant. In the present invention, when the mixed raw material preferably includes a toughening agent, the second dried raw material preferably further includes a toughening agent.
In the present invention, the first drying is preferably drying, the first drying is preferably performed in a drying oven, the temperature of the first drying is preferably 80 ℃, and the holding time of the first drying is preferably 12 hours. In the invention, the second drying is preferably drying, and the invention has no special requirement on the specific implementation process of the second drying.
In the present invention, the mixing is preferably carried out in a high-speed mixer.
In the present invention, the temperature of the mixing is preferably 80 ℃.
In the invention, the mixing is carried out for 10min.
In the present invention, the mixing is preferably carried out under stirring, and the present invention has no particular requirement for the specific implementation process of the stirring.
After the mixture is obtained, the composite material is obtained by melting, mixing and extruding the mixture.
In the present invention, the temperature for the melt kneading is preferably 180 to 200 ℃.
In the present invention, the melt kneading and the extrusion are both preferably performed by using a twin-screw extruder, and the screw rotation speed of the twin-screw extruder at the time of the melt kneading is preferably 300 to 500rpm, more preferably 350 to 450rpm.
In the present invention, when the melt-kneading is preferably carried out in a twin-screw extruder, the temperature of each region from the feed port temperature zone of the twin-screw extruder to the die temperature zone of the twin-screw extruder is independently preferably 180 to 200 ℃.
In the present invention, the twin-screw extruder preferably has an aspect ratio of 40.
In the present invention, when the melt-kneading is preferably carried out in a twin-screw extruder, the mixing web is preferably fed at a uniform speed.
In the invention, the extruded material is obtained after the extrusion, and the extruded material is preferably cooled, granulated and dried to obtain the fibrilia reinforced polypropylene composite material granules. The invention has no special requirements on the specific implementation processes of cooling, granulating and drying.
The fibrilia reinforced polypropylene composite material provided by the invention has the advantages that the waste of the existing fibrilia reinforced polypropylene composite material is recycled, the waste is changed into valuable, and the manufacturing cost of the composite material product is reduced; meanwhile, the loss of the mechanical property of the composite material is compensated and improved by adding auxiliaries such as polypropylene, a compatibilizer, a flexibilizer, a lubricant and the like; the composite material provided by the invention has good mechanical properties and processability, and can be reused in the field of automotive upholstery.
In order to further illustrate the present invention, the following embodiments are described in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
Drying the waste material of the fibrilia reinforced polypropylene composite material with the fibrilia mass content of 50 percent and polypropylene (the melt index is 15g/10 min) at the drying temperature of 80 ℃ for 12h. Then, the compatibilizer (polypropylene grafted maleic anhydride) and the lubricant (liquid paraffin) are dried together. Then, uniformly mixing 40 parts (by mass) of the waste material of the fibrilia reinforced polypropylene composite material, 60 parts of polypropylene, 3 parts of the compatibilizer and 5 parts of the lubricant in a high-speed mixer to obtain a mixture; adding the mixture into a double-screw extruder with the length-diameter ratio of 40 at a constant speed, and extruding the mixture after melting and mixing the mixture by utilizing the high-speed shearing of a screw, wherein: the temperature of each area from a feed inlet of the double-screw extruder to the die head is 180-200 ℃; the screw rotating speed of the double-screw extruder is 300-500 rpm. And cooling, granulating and drying the extruded material to obtain the injection molding grade fibrilia reinforced polypropylene composite material particles.
Example 2
Drying the waste material of the fibrilia reinforced polypropylene composite material with the fibrilia mass content of 50 percent and polypropylene (with the melt index of 20g/10 min) for 12 hours at the drying temperature of 80 ℃. Then, the compatibilizer (polypropylene grafted maleic anhydride) and the lubricant (liquid paraffin) are dried together. Then, uniformly mixing 30 parts (by mass) of the waste hemp fiber reinforced polypropylene composite material, 70 parts of polypropylene, 3 parts of compatibilizer and 5 parts of lubricant in a high-speed mixer to obtain a mixture; adding the mixture into a double-screw extruder with the length-diameter ratio of 40 at a constant speed, and extruding the mixture after melting and mixing the mixture by utilizing the high-speed shearing of a screw, wherein: the temperature of each area from a feed inlet of the double-screw extruder to the die head is 180-200 ℃; the screw rotating speed of the double-screw extruder is 300-500 rpm. And cooling, granulating and drying the extruded material to obtain the injection molding grade fibrilia reinforced polypropylene composite material particles.
Example 3
Drying the waste material of the fibrilia reinforced polypropylene composite material with the fibrilia mass content of 50 percent and polypropylene (with the melt index of 10g/10 min) at the drying temperature of 80 ℃ for 12h. Then, the compatibilizer (polypropylene grafted maleic anhydride), the lubricant (liquid paraffin) and the flexibilizer (ethylene propylene diene monomer) are dried and dried together. Then, uniformly mixing 30 parts (by mass) of the fibrilia reinforced polypropylene composite material waste, 67 parts of polypropylene, 3 parts of compatibilizer, 3 parts of flexibilizer and 5 parts of lubricant in a high-speed mixer to obtain a mixture; adding the mixture into a double-screw extruder with the length-diameter ratio of 40: the temperature of each area from a feed inlet of the double-screw extruder to the die head is 180-200 ℃; the screw rotating speed of the double-screw extruder is 300-500 rpm. And cooling, granulating and drying the extruded material to obtain the injection molding grade fibrilia reinforced polypropylene composite material particles.
Example 4
Drying the waste material of the fibrilia reinforced polypropylene composite material with the fibrilia mass content of 50 percent and polypropylene (with the melt index of 10g/10 min) at the drying temperature of 80 ℃ for 12h. And then drying the compatibilizer (polypropylene grafted maleic anhydride), the lubricant (liquid paraffin) and the toughening agent (ethylene propylene diene monomer) together. Then, uniformly mixing 30 parts (by mass) of the fibrilia reinforced polypropylene composite material waste, 65 parts of polypropylene, 3 parts of compatibilizer, 5 parts of flexibilizer and 5 parts of lubricant in a high-speed mixer to obtain a mixture; adding the mixture into a double-screw extruder with the length-diameter ratio of 40 at a constant speed, and extruding the mixture after melting and mixing the mixture by utilizing the high-speed shearing of a screw, wherein: the temperature of each area from a feed inlet of the double-screw extruder to the die head is 180-200 ℃; the screw rotating speed of the double-screw extruder is 300-500 rpm. And cooling, granulating and drying the extruded material to obtain the injection molding grade fibrilia reinforced polypropylene composite material particles.
Test example
The injection molding grade fibrilia reinforced polypropylene composite particles prepared in examples 1 to 4 were subjected to mechanical property tests, wherein the test standard for impact strength was GB1043, the test standard for tensile strength was GB1040, the test standard for elongation at break was GB1040, and the test results are shown in table 1.
Table 1 shows the data of the mechanical property tests of examples 1 to 4
As can be seen from the data of the mechanical property tests on the fibrilia reinforced polypropylene composite material particles prepared in the embodiments 1 to 4, the composite material prepared by the twin-screw extrusion process has good mechanical property. The addition of the compatibilizer and the toughening agent compensates and improves the mechanical loss of the recycled fibrilia reinforced polypropylene composite material waste, and the addition of the lubricant endows the surface of the fibrilia reinforced polypropylene composite material with better glossiness. The fibrilia reinforced polypropylene composite material prepared by the invention has good mechanical property and processability, realizes the preparation of injection molding grade composite material, and can be popularized and applied in the field of automotive upholstery.
Although the above embodiments have been described in detail, they are only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and all of the embodiments belong to the protection scope of the present invention.
Claims (10)
1. The fibrilia reinforced polypropylene composite material is characterized by comprising the following components in parts by mass:
30-45 parts of fibrilia reinforced polypropylene composite material waste, 55-70 parts of polypropylene, 1-5 parts of compatibilizer and 0.5-5 parts of lubricant.
2. The fibrilia reinforced polypropylene composite material of claim 1, further comprising 0.1-5 parts of a toughening agent.
3. The fibrilia-reinforced polypropylene composite of claim 1, wherein the fibrilia in the fibrilia-reinforced polypropylene composite waste comprises one or more of jute fibers, flax fibers, sisal fibers, and kenaf fibers.
4. The fibrilia-reinforced polypropylene composite material according to claim 1 or 3, wherein the mass percentage of the fibrilia in the waste of the fibrilia-reinforced polypropylene composite material is 30-50 wt%.
5. The fibrilia reinforced polypropylene composite material according to claim 1, wherein the melt index of the polypropylene is 10-20 g/10min.
6. The fibrilia-reinforced polypropylene composite material according to claim 1, wherein the compatibilizer comprises polypropylene grafted maleic anhydride and/or polypropylene wax.
7. The fibrilia-reinforced polypropylene composite of claim 1, wherein the lubricant comprises one or more of liquid paraffin, polypropylene wax and talc.
8. The fibrilia-reinforced polypropylene composite material of claim 2 wherein the toughening agent comprises a polyolefin elastomer and/or an ethylene propylene diene monomer.
9. The method for preparing the fibrilia reinforced polypropylene composite material according to claim 1, which is characterized by comprising the following steps:
mixing the fibrilia reinforced polypropylene composite material waste, polypropylene, a compatibilizer and a lubricant to obtain a mixture;
and extruding the mixture after melting and mixing to obtain the fibrilia reinforced polypropylene composite material.
10. The method according to claim 9, wherein the melt-kneading temperature is 180 to 200 ℃, and the melt-kneading and the extrusion are performed using a twin-screw extruder having a screw rotation speed of 300 to 500rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211101100.4A CN115612202A (en) | 2022-09-09 | 2022-09-09 | Fibrilia reinforced polypropylene composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211101100.4A CN115612202A (en) | 2022-09-09 | 2022-09-09 | Fibrilia reinforced polypropylene composite material and preparation method thereof |
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| CN115612202A true CN115612202A (en) | 2023-01-17 |
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| CN202211101100.4A Pending CN115612202A (en) | 2022-09-09 | 2022-09-09 | Fibrilia reinforced polypropylene composite material and preparation method thereof |
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| CN105504504A (en) * | 2015-12-30 | 2016-04-20 | 上海普利特复合材料股份有限公司 | Bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors and preparation method of bast fiber plate waste recycling-based short fiber-reinforced composite material |
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| CN105504504A (en) * | 2015-12-30 | 2016-04-20 | 上海普利特复合材料股份有限公司 | Bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors and preparation method of bast fiber plate waste recycling-based short fiber-reinforced composite material |
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Application publication date: 20230117 |