CN111087787A - Biodegradable fiber reinforced PC/ABS composite material - Google Patents
Biodegradable fiber reinforced PC/ABS composite material Download PDFInfo
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- 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
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- C08J2435/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Derivatives of such polymers
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- C08J2455/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2423/00 - C08J2453/00
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Abstract
The invention discloses a biodegradable fiber reinforced PC/ABS composite material, which comprises the following raw materials in parts by weight: 55-65 parts of PC resin, 5-10 parts of ABS resin, 10-15 parts of chitin nanocrystalline, 11-13 parts of flame retardant, 3-8 parts of toughening agent, 1-3 parts of compatilizer, 0.2-0.5 part of anti-dripping agent, 0.1-0.5 part of antioxidant and 1-3 parts of black master batch. The PC/ABS composite material disclosed by the invention not only has biodegradability, but also has good mechanical properties.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a biodegradable fiber reinforced PC/ABS composite material.
Background
At present, for the flame-retardant PC/ABS reinforced composite material, a glass fiber, talcum powder, wollastonite or barium sulfate system is generally adopted, but the problems of overhigh processing cost, low mechanical property, environmental pollution and overlarge equipment damage in the production and processing process generally exist. The biomass nano-crystal prepared by taking natural polysaccharide macromolecules as raw materials mainly comprises cellulose nano-fibers, chitin nano-fibers and starch nano-fibers. The biomass nanocrystal has the properties of renewable, degradable and nontoxic natural polymers, and has the characteristics of high surface activity, high specific surface area and high mechanical strength of a nanomaterial. This allows the biomass nanocrystals to be used as an organic nanofiller in composite systems. Over the last two decades, biomass nanocrystals or modified biomass nanocrystals have been used by researchers to prepare polymer nanocomposites for improving the mechanical, thermal and biological properties of polymer matrices.
Chitin is the second largest biosynthetic macromolecule inferior to cellulose in the annual yield on earth, which is widely present in the hulls of marine arthropods such as shrimps, crabs and the like, and also contains a large amount of chitin in the cell walls of insect hulls, fungal plants and seaweed plants, chitin is an inexhaustible renewable natural resource on earth, and chitin biosynthesized annually is up to 100 hundred million tons, chitin and cellulose have very similar molecular structures, and the acetylamino group on the C-2 atom of chitin is replaced by a hydroxyl group to obtain the molecular structure of cellulose, while chitosan deacetylation can obtain chitosan.
(1) The raw materials are wide in source, are natural renewable resources and are low in cost;
(2) the density of the composite material is similar to that of the polymer, and the bulk density of the composite material is not changed obviously after the composite material is filled;
(3) the material has rigid characteristics and higher strength and modulus;
(4) the surface contains a large number of functional groups, and the nano materials with different surface properties can be easily prepared by chemical modification.
In addition, the amino and acetamido groups contained on the CNF surface further enrich its range of applications and surface modification compared to cellulose nanofibers and starch nanocrystals, which are both biological nanocrystals.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a biodegradable fiber reinforced PC/ABS composite material, which not only has biodegradability, but also has good mechanical properties.
The invention provides a biodegradable fiber reinforced PC/ABS composite material, which comprises the following raw materials in parts by weight: 55-65 parts of PC resin, 5-10 parts of ABS resin, 10-15 parts of chitin nanocrystalline fiber, 11-13 parts of flame retardant, 3-8 parts of toughening agent, 1-3 parts of compatilizer, 0.2-0.5 part of anti-dripping agent, 0.1-0.5 part of antioxidant and 1-3 parts of black master batch.
Preferably, the PC resin is at least one of aromatic polycarbonate, aliphatic polycarbonate, aromatic-aliphatic polycarbonate, and branched polycarbonate.
Preferably, the PC resin is a low flow PC resin having a melt index of 7-10g/10min at 300 ℃ under 1.2kg test conditions and/or a high flow PC resin having a melt index of 18-22g/10min at 300 ℃ under 1.2kg test conditions.
Preferably, the ABS resin is obtained by a continuous bulk polymerization method, and the melt index of the ABS resin is 2-8g/10min under the test condition of 230 ℃ and 3.8 kg.
Preferably, the chitin nanocrystal has the length of 150-400nm and the diameter of 20-40 nm.
In the invention, the chitin nanocrystalline is a self-made product and is prepared by the following steps: adding chitin into hydrochloric acid solution, and stirring to react to form a colloidal product; diluting and centrifuging the colloidal product to obtain colloidal chitin nanowhiskers; dialyzing the colloidal chitin nanowhiskers to obtain chitin nanowhisker suspension, and freeze-drying to obtain chitin nanocrystals.
Preferably, the flame retardant is a phosphorus-based flame retardant, preferably having a viscosity of 1800-2600mPa.s at 40 ℃ and a phosphorus content of 8.5-8.9 wt%.
Preferably, the toughening agent is at least one of high rubber powder or methyl methacrylate-butadiene-styrene terpolymer; the compatibilizer is preferably at least one of a styrene-maleic anhydride copolymer or a styrene-acrylonitrile-maleic anhydride copolymer.
Preferably, the anti-dripping agent is at least one of SAN coated PTFE or MMA coated PTFE; the carrier of the black master is preferably an AS carrier or a PC carrier.
Preferably, the antioxidant is preferably a hindered phenol antioxidant and/or a phosphite antioxidant;
the hindered phenol antioxidant is preferably one or a combination of several of N, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine, 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, pentaerythrityl tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and octadecyl β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and the phosphite antioxidant is preferably one or a combination of several of tris (2, 4-di-tert-butylphenyl) phosphite and bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite.
Preferably, the preparation method of the biodegradable fiber reinforced PC/ABS composite material comprises: adding PC resin, ABS resin, chitin nanocrystalline, a flame retardant, a toughening agent, a compatilizer, an anti-dripping agent, an antioxidant and black masterbatch into a mixer, uniformly mixing to obtain a mixed material, adding the mixed material into a double-screw extruder from a main feeding port, carrying out melt extrusion through the double-screw extruder, and then carrying out bracing granulation to obtain the biodegradable fiber reinforced PC/ABS composite material;
preferably, the melt mixing temperature of the twin-screw extruder is 200-260 ℃, and the rotating speed is 300-500 rpm.
Compared with the prior art, the PC/ABS composite material provided by the invention can simultaneously improve the mechanical strength and the biodegradation performance of the PC/ABS composite material by taking the chitin nanocrystalline fiber as the additive, and the biodegradable fiber-reinforced PC/ABS composite material is prepared.
Because the surface of the chitin nanocrystalline contains a large number of hydroxyl groups, styrene-maleic anhydride copolymer and the like are used as compatilizers of the chitin nanocrystalline, the compatibility between a PC/ABS matrix and cellulose nanocrystalline can be effectively enhanced, so that the mechanical property is improved, and the comprehensive performance of the PC/ABS composite material is further improved.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A biodegradable fiber reinforced PC/ABS composite material comprises the following raw materials in parts by weight: 60 parts of PC resin, 5 parts of ABS resin, 15 parts of chitin nanocrystalline, 11 parts of BDP flame retardant, 4.5 parts of methyl methacrylate-butadiene-styrene terpolymer MBS, 3 parts of styrene-maleic anhydride copolymer, 0.4 part of SAN coated PTFE, 1680.2 parts of antioxidant and 1 part of black master batch;
the PC resin is aromatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 6g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, chitin nanocrystalline, BDP flame retardant, methyl methacrylate-butadiene-styrene terpolymer MBS, styrene-maleic anhydride copolymer, SAN coated PTFE, antioxidant 168 and black master into a mixer for mixing for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregations;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 400rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the biodegradable fiber reinforced PC/ABS composite material.
Example 2
A biodegradable fiber reinforced PC/ABS composite material comprises the following raw materials in parts by weight: 60 parts of PC resin, 5 parts of ABS resin, 15 parts of chitin nanocrystalline, 11 parts of BDP flame retardant, 6.5 parts of methyl methacrylate-butadiene-styrene terpolymer MBS, 1 part of styrene-maleic anhydride copolymer, 0.4 part of SAN coated PTFE, 1680.2 parts of antioxidant and 1 part of black master batch;
the PC resin is aromatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 6g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, chitin nanocrystalline, BDP flame retardant, methyl methacrylate-butadiene-styrene terpolymer MBS, styrene-maleic anhydride copolymer, SAN coated PTFE, antioxidant 168 and black master into a mixer for mixing for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregations;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 400rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the biodegradable fiber reinforced PC/ABS composite material.
Example 3
A biodegradable fiber reinforced PC/ABS composite material comprises the following raw materials in parts by weight: 55 parts of PC resin, 10 parts of ABS resin, 10 parts of chitin nanocrystalline, 13 parts of BDP flame retardant, 3 parts of high-rubber powder, 2 parts of styrene-acrylonitrile-maleic anhydride copolymer, 0.5 part of MMA-coated PTFE, 10980.5 parts of antioxidant and 3 parts of black master batch;
the PC resin is aliphatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 2g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, chitin nanocrystalline, BDP flame retardant, high rubber powder, styrene-acrylonitrile-maleic anhydride copolymer, MMA-coated PTFE, antioxidant 1098 and black master batch into a mixer to mix for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregations;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 500rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the biodegradable fiber reinforced PC/ABS composite material.
Example 4
A biodegradable fiber reinforced PC/ABS composite material comprises the following raw materials in parts by weight: 65 parts of PC resin, 5 parts of ABS resin, 15 parts of chitin nanocrystalline, 11 parts of BDP flame retardant, 8 parts of high-rubber powder, 2 parts of styrene-acrylonitrile-maleic anhydride copolymer, 0.2 part of MMA-coated PTFE, 10980.1 parts of antioxidant and 2 parts of black master batch;
the PC resin is aliphatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 8g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, chitin nanocrystalline, BDP flame retardant, high rubber powder, styrene-acrylonitrile-maleic anhydride copolymer, MMA-coated PTFE, antioxidant 1098 and black master batch into a mixer to mix for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregations;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 300rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the biodegradable fiber reinforced PC/ABS composite material.
Comparative example 1
A PC/ABS composite material comprises the following raw materials in parts by weight: 60 parts of PC resin, 5 parts of ABS resin, 15 parts of glass fiber GF, 11 parts of BDP flame retardant, 7.5 parts of methyl methacrylate-butadiene-styrene terpolymer MBS, 0.4 part of SAN coated PTFE, 1680.2 parts of antioxidant and 1 part of black master batch;
the PC resin is aromatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 6g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, glass fiber GF, BDP flame retardant, methyl methacrylate-butadiene-styrene terpolymer MBS, SAN coated PTFE, antioxidant 168 and black master into a mixer for mixing for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregates;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 400rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the PC/ABS composite material.
Comparative example 2
A PC/ABS composite material comprises the following raw materials in parts by weight: 60 parts of PC resin, 5 parts of ABS resin, 15 parts of chitin nanocrystalline, 11 parts of BDP flame retardant, 7.5 parts of methyl methacrylate-butadiene-styrene terpolymer MBS, 0.4 part of SAN coated PTFE, 1680.2 parts of antioxidant and 1 part of black master batch;
the PC resin is aromatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 6g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, chitin nanocrystalline, BDP flame retardant, methyl methacrylate-butadiene-styrene terpolymer MBS, SAN coated PTFE, antioxidant 168 and black master into a mixer for mixing for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregations;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 400rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the biodegradable fiber reinforced PC/ABS composite material.
Comparative example 3
A PC/ABS composite material comprises the following raw materials in parts by weight: 60 parts of PC resin, 5 parts of ABS resin, 15 parts of chitin nanocrystalline, 11 parts of BDP flame retardant, 2.5 parts of methyl methacrylate-butadiene-styrene terpolymer MBS, 0.4 part of SAN coated PTFE, 1680.2 parts of antioxidant and 1 part of black master batch;
the PC resin is aromatic polycarbonate, the ABS resin is obtained by adopting a continuous bulk polymerization method, and the melt index of the ABS resin is 6g/10min at 230 ℃ under the test condition of 3.8 kg;
the biodegradable fiber reinforced PC/ABS composite material comprises the following steps: adding PC resin, ABS resin, chitin nanocrystalline, BDP flame retardant, methyl methacrylate-butadiene-styrene terpolymer MBS, SAN coated PTFE, antioxidant 168 and black master into a mixer for mixing for 15min, wherein a mixer adopts medium-low speed mixing, the rotating speed of the mixer is 200rpm, the materials are uniformly mixed in the mixer to obtain a mixed material, and the effect of uniform mixing is that various particles and powder are basically uniform without obvious lumps and aggregations;
adding the mixed material into a double-screw extruder from a main feeding port, wherein the rotating speed of a main machine screw is 400rpm, the temperatures of reaction sections from a feeding section to a machine head in the double-screw extruder are respectively 200 ℃, 220 ℃, 240 ℃, 260 ℃, 255 ℃, 230 ℃, 225 ℃ and 200 ℃, the temperature of a die head is 250 ℃, carrying out melt extrusion by the double-screw extruder, then adopting a water-cooling strand-drawing and grain-cutting mode, and carrying out sieving and dehydration to obtain the biodegradable fiber reinforced PC/ABS composite material.
The PC/ABS composites prepared in examples 1-2 and comparative examples 1-3 were tested for their relevant properties according to the relevant test standards, and the results are shown in the following table:
as can be seen from the above table, in the PC/ABS composite material, the chitin nanocrystalline reinforced flame-retardant PC/ABS composite material has mechanical properties similar to those of PC/ABS + GF reinforced materials. And after the compatilizer is added, the tensile strength, the bending strength, the modulus and the impact property are all improved to a certain extent. The surface of the nano crystal of the chitin possibly contains a large amount of hydroxyl groups, and the addition of the styrene grafted maleic anhydride enhances the interaction between the matrix and the cellulose nano crystal, thereby improving the mechanical property.
The chitin nanocrystalline reinforced flame-retardant PC/ABS composite material prepared by the technical scheme has high mechanical property and good appearance, and can meet the requirements of household appliances, communication and the like on the forming and using of parts with requirements on performance, appearance, size and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A biodegradable fiber reinforced PC/ABS composite material is characterized by comprising the following raw materials in parts by weight: 55-65 parts of PC resin, 5-10 parts of ABS resin, 10-15 parts of chitin nanocrystalline, 11-13 parts of flame retardant, 3-8 parts of toughening agent, 1-3 parts of compatilizer, 0.2-0.5 part of anti-dripping agent, 0.1-0.5 part of antioxidant and 1-3 parts of black master batch.
2. The biodegradable fiber reinforced PC/ABS composite of claim 1, wherein the PC resin is at least one of aromatic polycarbonate, aliphatic polycarbonate, aromatic-aliphatic polycarbonate, and branched polycarbonate.
3. The biodegradable fiber reinforced PC/ABS composite material according to claim 1 or 2, wherein the PC resin is a low flow PC resin having a melt index of 7-10g/10min at 300 ℃ under a test condition of 1.2kg and/or a high flow PC resin having a melt index of 18-22g/10min at 300 ℃ under a test condition of 1.2 kg.
4. The biodegradable fiber-reinforced PC/ABS composite material according to any of claims 1-3, wherein the ABS resin is obtained by a continuous bulk polymerization method and has a melt index of 2-8g/10min at 230 ℃ under a test condition of 3.8 kg.
5. The biodegradable fiber-reinforced PC/ABS composite material according to any of claims 1-4, wherein the chitin nanocrystals have a length of 150-400nm and a diameter of 20-40 nm.
6. Biodegradable fiber reinforced PC/ABS composite according to any of claims 1-5, characterized in that the flame retardant is a phosphorus based flame retardant, preferably having a viscosity of 1800-2600mPa.s at 40 ℃ and a phosphorus content of 8.5-8.9 wt%.
7. The biodegradable fiber-reinforced PC/ABS composite material according to any one of claims 1-6, wherein the toughening agent is at least one of high rubber powder or a methyl methacrylate-butadiene-styrene terpolymer; the compatibilizer is preferably at least one of a styrene-maleic anhydride copolymer or a styrene-acrylonitrile-maleic anhydride copolymer.
8. The biodegradable fiber reinforced PC/ABS composite material according to any of claims 1-7, wherein the anti-dripping agent is at least one of SAN coated PTFE or MMA coated PTFE; the carrier of the black master is preferably an AS carrier or a PC carrier.
9. The biodegradable fiber reinforced PC/ABS composite material according to any of claims 1-8, wherein the antioxidant is preferably a hindered phenolic antioxidant and/or a phosphite antioxidant;
the hindered phenol antioxidant is preferably one or a combination of several of N, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine, 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, pentaerythrityl tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and octadecyl β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and the phosphite antioxidant is preferably one or a combination of several of tris (2, 4-di-tert-butylphenyl) phosphite and bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite.
10. Biodegradable fiber reinforced PC/ABS composite according to any of claims 1-9, characterized in that it is prepared by a method comprising: adding PC resin, ABS resin, chitin nanocrystalline, a flame retardant, a toughening agent, a compatilizer, an anti-dripping agent, an antioxidant and black masterbatch into a mixer, uniformly mixing to obtain a mixed material, adding the mixed material into a double-screw extruder from a main feeding port, carrying out melt extrusion through the double-screw extruder, and then carrying out bracing granulation to obtain the biodegradable fiber reinforced PC/ABS composite material;
preferably, the melt mixing temperature of the twin-screw extruder is 200-260 ℃, and the rotating speed is 300-500 rpm.
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Cited By (2)
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| CN112029260A (en) * | 2020-09-21 | 2020-12-04 | 广东国立科技股份有限公司 | Fibrilia-reinforced PC/ABS composite material, and preparation method and application thereof |
| CN115926416A (en) * | 2022-12-15 | 2023-04-07 | 金发科技股份有限公司 | PC/ABS alloy material and preparation method and application thereof |
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| CN115926416B (en) * | 2022-12-15 | 2024-02-13 | 金发科技股份有限公司 | PC/ABS alloy material and preparation method and application thereof |
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