CN112724529A - Long glass fiber reinforced polypropylene composite material for instrument board framework and preparation method thereof - Google Patents
Long glass fiber reinforced polypropylene composite material for instrument board framework and preparation method thereof Download PDFInfo
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- -1 polypropylene Polymers 0.000 title claims abstract description 85
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 82
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 82
- 239000003365 glass fiber Substances 0.000 title claims abstract description 75
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 34
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 229920000587 hyperbranched polymer Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims description 24
- 230000003078 antioxidant effect Effects 0.000 claims description 19
- 238000005470 impregnation Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 13
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 229920002312 polyamide-imide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000012856 weighed raw material Substances 0.000 claims description 3
- 239000000805 composite resin Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000005422 blasting Methods 0.000 abstract description 6
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 23
- 238000001746 injection moulding Methods 0.000 description 22
- 238000003756 stirring Methods 0.000 description 11
- 238000007598 dipping method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000012745 toughening agent Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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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
- 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
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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
- 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
- C08J2323/14—Copolymers of propene
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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
- 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
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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
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
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- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
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- C08J2487/00—Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
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- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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Abstract
本发明公开了一种仪表板骨架用长玻纤增强聚丙烯复合材料及其制备方法。本发明的仪表板骨架用长玻纤增强聚丙烯复合材料通过添加并优化超支化聚合物使用比例使材料在火焰处理后具备优异的粘着性，同时材料韧性提升，能够更好满足仪表板骨架材料爆破要求。本发明的仪表板骨架用长玻纤增强聚丙烯复合材料组分按重量组份分别为：聚丙烯树脂30～90份、玻璃纤维10～60份、相容剂1～10份、超支化聚合物0.1～3份、抗氧剂0.1～1份。本发明的仪表板骨架用长玻纤增强聚丙烯复合材料可以使材料在火焰处理后具备优异的粘着性，同时材料韧性提升，能够更好满足仪表板骨架材料爆破要求。The invention discloses a long glass fiber reinforced polypropylene composite material for an instrument panel skeleton and a preparation method thereof. The long glass fiber reinforced polypropylene composite material for the instrument panel frame of the present invention has excellent adhesion after flame treatment by adding and optimizing the proportion of hyperbranched polymers, and at the same time, the material toughness is improved, and can better meet the requirements of the instrument panel frame material. Blasting requirements. The components of the long glass fiber reinforced polypropylene composite material for the skeleton of the instrument panel of the present invention are respectively: 30-90 parts of polypropylene resin, 10-60 parts of glass fiber, 1-10 parts of compatibilizer, hyperbranched polymerization 0.1 to 3 parts of antioxidants and 0.1 to 1 parts of antioxidants. The long glass fiber reinforced polypropylene composite material for the instrument panel frame of the present invention can make the material have excellent adhesion after flame treatment, and at the same time, the material toughness is improved, and can better meet the blasting requirements of the instrument panel frame material.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a long glass fiber reinforced polypropylene composite material for an instrument board framework and a preparation method thereof.
Background
Polypropylene materials are typically modified in a fill-enhancing manner to achieve higher mechanical properties and good dimensional stability for use as structural members in place of metals or engineering plastics. In the field of automobile parts, as part of the parts have higher requirements on the mechanical strength of the materials, long glass fiber reinforced polypropylene materials are more adopted and are mainly used for parts such as main and auxiliary instrument panels, front end frames, skylight frameworks, tail door inner panels and the like of automobiles, and because the parts need to be glued with other parts in the assembling process, the adhesiveness of the materials is concerned. The surface polarity of the long glass fiber reinforced polypropylene material is poor, the flame treatment mode is usually adopted in the market at present to improve the surface polarity of parts of the long glass fiber reinforced polypropylene material, but the part flame treatment process control of the long glass fiber reinforced polypropylene material is difficult to grasp, the part adhesion effect is poor easily due to incomplete treatment or excessive treatment, and for parts with higher surface activity requirements, the current long glass fiber reinforced polypropylene material formula system is difficult to meet the requirements through flame treatment, and a new formula system needs to be searched to meet the requirements. A formula system using grafted alkyl phosphate carboxylate is introduced in a good adhesive property long glass fiber reinforced polypropylene composite material and a preparation method and a process thereof, the adhesion of the material can be greatly improved, but the system has a large influence on the toughness of the material, the prepared material can meet the requirements of parts such as a front end frame, a skylight framework, a tail door inner plate and the like which do not relate to blasting, instrument panel parts relate to air bag blasting, and in order to avoid fragments generated during air bag blasting due to insufficient toughness of the material from threatening the safety of drivers and passengers, a new formula system must be found for enhancing the toughness of the material. The long glass fiber reinforced polypropylene composite material for the instrument board framework is a high-quality material which is researched and developed from the market and aims to solve the problems of good adhesion and good toughness of parts produced by using the long glass fiber reinforced polypropylene composite material.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the long glass fiber reinforced polypropylene composite material for the instrument board framework, which has good surface adhesiveness and good toughness.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the long glass fiber reinforced polypropylene composite material for the instrument board framework consists of six components, namely polypropylene resin, glass fiber, a compatilizer, a hyperbranched polymer and an antioxidant, and is prepared from the following raw materials in parts by weight: 30-90 parts of polypropylene resin, 10-60 parts of glass fiber, 1-10 parts of compatilizer, 0.1-3 parts of hyperbranched polymer and 0.1-1 part of antioxidant; the hyperbranched polymer is hyperbranched polyamide/polyimide polymer.
The polypropylene resin is one or the combination of homopolymerized polypropylene or copolymerized polypropylene. Preferably, the polypropylene resin is selected from one or two of the group consisting of M30RHC in the sea-fighting petrochemical industry and HJ9060 in the Huajin chemical industry.
The glass fiber is continuous glass fiber of 1200tex-3600 tex. Preferably, the glass fiber is Tanshan glass fiber TCR738 continuous glass fiber.
The compatilizer is polypropylene grafted by maleic anhydride, and the grafting rate is 1.5%. Preferably, the compatibilizer is polypropylene 1001 grafted with maleic anhydride.
The antioxidant is one or a combination of a plurality of hindered phenol antioxidants 1010, phosphite antioxidants 168, nitrogen oxide-resistant antioxidants GA80 and the like.
The preparation method of the long glass fiber reinforced polypropylene composite material for the instrument board framework is characterized by comprising the following steps of: the method comprises the following steps:
1): weighing raw materials of polypropylene resin, hyperbranched polymer and other auxiliary agents according to the weight ratio, putting the weighed raw materials into a high-speed mixer, uniformly mixing, and then feeding into an impregnation tank through a double-screw extruder;
2): and (3) carrying out bracing, cooling, granulating and drying treatment on the continuous glass fiber after passing through the impregnation tank.
The long glass fiber reinforced polypropylene composite material for the instrument panel framework can ensure that the material has excellent adhesiveness after flame treatment, and meanwhile, the toughness of the material is improved, so that the requirement of explosion of the instrument panel framework material can be better met.
Detailed Description
The technical solution of the present invention will be further described with reference to the following specific examples.
The compatilizer used in the embodiment of the invention is polypropylene 1001 grafted by maleic anhydride; the hyperbranched polymer is hyperbranched polyamide/polyimide polymer SP 3226; the antioxidant is one or a combination of a plurality of hindered phenol antioxidants 1010, phosphite antioxidants 168, nitrogen oxide resistant antioxidants GA80 and the like.
The long glass fiber reinforced polypropylene composite material for the instrument board framework comprises the following components in percentage by weight: 30-90 parts of polypropylene resin, 10-60 parts of glass fiber, 1-10 parts of compatilizer, 0.1-3 parts of hyperbranched polymer and 0.1-1 part of antioxidant.
The preparation method of the long glass fiber reinforced polypropylene composite material for the instrument board framework comprises the following steps:
1): weighing raw materials of polypropylene resin, hyperbranched polymer and other auxiliary agents according to the weight ratio, putting the weighed raw materials into a high-speed mixer, uniformly mixing, and then feeding into an impregnation tank through a double-screw extruder;
2): and (3) carrying out bracing, cooling, granulating and drying treatment on the continuous glass fiber after passing through the impregnation tank.
Example 1:
1): weighing 76.1 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 1.5 parts of hyperbranched polymer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Example 2:
1): weighing 75.4 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 2 parts of hyperbranched polymer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding the mixture into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Example 3:
1): weighing 74.6 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 2.2 parts of hyperbranched polymer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding the mixture into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Comparative example 1:
1): weighing 72.6 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 5 parts of flexibilizer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding into a dipping tank through a double-screw extruder;
2): and (3) after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment.
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Comparative example 2:
1): weighing 67.6 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 10 parts of flexibilizer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Comparative example 3:
1): weighing 62.6 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 15 parts of flexibilizer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 8cm/s for later use.
Comparative example 4:
1): weighing 64.6 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 3 parts of hyperbranched polymer, 10 parts of flexibilizer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding the mixture into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Comparative example 5:
1): 77.6 parts of polypropylene resin is weighed according to the weight ratio and dried by an oven; adding 2 parts of compatilizer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding into an impregnation tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Comparative example 6:
1): weighing 73.7 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 3 parts of flexibilizer, 1 part of grafted alkyl phosphorus carboxylate and 0.3 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding the mixture into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument panel framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3 mm.
Comparative example 7:
1): weighing 76.8 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 0.8 part of hyperbranched polymer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding the mixture into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
Comparative example 8
1): weighing 76.5 parts of polypropylene resin according to the weight ratio, and drying by an oven; adding 2 parts of compatilizer, 1.1 parts of hyperbranched polymer and 0.4 part of antioxidant, stirring and mixing uniformly in a high-speed machine, and then feeding into a dipping tank through a double-screw extruder;
2): after 20 parts of continuous glass fiber passes through the impregnation tank, carrying out bracing, cooling, granulating and drying treatment;
3): and (3) performing injection molding on the long glass fiber reinforced polypropylene composite material for the instrument board framework obtained in the step (2) by using an injection molding machine to obtain ISO standard sample bars and sample plates with the size of 150 x 100 x 3mm, and treating the surfaces of the sample plates by using a handheld flame treatment instrument at the speed of 4cm/s for later use.
And (3) performance testing:
the adhesion of a part is generally determined by the surface energy of the part, which is characterized by a dyne value below 46, which is relatively poor, between 46 and 52, which is excellent, and above 52, which is excellent, and thus the adhesion to a material is characterized by a template surface dyne value. The toughness of the material is mainly characterized by the impact performance and the notch impact performance of the material.
The results of the surface dyne value, impact strength, notched impact and tensile modulus tests on the sample are shown in table 1:
TABLE 1 test results of Material Properties
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 | Comparative example 8 | |
| Dyne value | 52 | 52 | 48 | 40 | 40 | 38 | 44 | 42 | 52 | 44 | 44 |
| Impact strength kJ/m ^2 | 60 | 58 | 55 | 48 | 52 | 62 | 51 | 49 | 39 | 52 | 53 |
| Notched impact strength kJ/m ^2 | 23 | 23 | 22 | 18 | 20 | 24 | 20 | 17 | 13 | 19 | 21 |
| Tensile modulus MPa | 5240 | 5190 | 5170 | 4700 | 4500 | 4000 | 4430 | 5010 | 4620 | 5000 | 5080 |
From the performances of the above examples and comparative examples, it can be seen that the long glass fiber reinforced polypropylene composite material for instrument panel frameworks of the present invention is a composite material with excellent adhesion and good toughness. According to the data comparison, the adhesion of the material can be obviously improved by adding the hyperbranched polymer, and the toughness of the material can be improved, for example, the dyne value of example 1 (the glass fiber added with 1.5 parts of the hyperbranched polymer is 20% of the reinforced polypropylene) is better than that of comparative example 5 (the glass fiber added with no hyperbranched polymer is 20% of the reinforced polypropylene); according to the comparison of the data, the addition of the hyperbranched polymer can improve the toughness of the material while obviously improving the adhesion of the material, such as example 2 (the glass fiber added with 2 parts of the hyperbranched polymer is 20% of the reinforced polypropylene), the toughness of the material is basically quite close to that of comparative example 3 (the glass fiber added with 15 parts of the POE toughening agent is 20% of the reinforced polypropylene); the data comparison shows that the amount of hyperbranched polymer added needs to be in a certain range, such as example 3 (2 parts of hyperbranched polymer added with 20% of glass fiber reinforced polypropylene), which has a dyne value superior to that of comparative example 4 (3 parts of hyperbranched polymer added with 10 parts of POE toughening agent added with 20% of glass fiber reinforced polypropylene) and comparative example 8 (1.1 parts of hyperbranched polymer added with 20% of glass fiber reinforced polypropylene); according to the data, for example, the dyne value of example 3 (the reinforced polypropylene with 20% of glass fiber added with 2.2 parts of hyperbranched polymer) is slightly lower than that of comparative example 6 (the reinforced polypropylene with 20% of glass fiber added with 1 part of grafted alkyl phosphate carboxylate without flame treatment), but the toughness and modulus of example 3 are far better than those of comparative example 6, and the example 3 meets the part adhesion requirement and the part explosion requirement and further meets the performance requirement of the material for instrument panel parts. The preparation method disclosed by the invention is simple to operate, ensures that the long glass fiber reinforced polypropylene composite material has excellent adhesion and excellent toughness, is suitable for instrument panel parts with requirements on blasting, and is suitable for industrial production and application.
Claims (6)
1. The utility model provides a fine reinforcing polypropylene combined material of long glass for instrument board skeleton which characterized in that: the polypropylene resin composite material consists of six components, namely polypropylene resin, glass fiber, a compatilizer, a hyperbranched polymer and an antioxidant, and is prepared from the following raw materials in parts by weight: 30-90 parts of polypropylene resin, 10-60 parts of glass fiber, 1-10 parts of compatilizer, 0.1-3 parts of hyperbranched polymer and 0.1-1 part of antioxidant; the hyperbranched polymer is hyperbranched polyamide/polyimide polymer.
2. The long glass fiber reinforced polypropylene composite material for instrument panel frameworks according to claim 1, wherein: the polypropylene resin is one or the combination of homopolymerized polypropylene or copolymerized polypropylene.
3. The long glass fiber reinforced polypropylene composite material for instrument panel frameworks according to claim 1, wherein: the glass fiber is continuous glass fiber of 1200tex-3600 tex.
4. The long glass fiber reinforced polypropylene composite material for instrument panel frameworks according to claim 1, wherein: the compatilizer is polypropylene grafted by maleic anhydride, and the grafting rate is 1.5%.
5. The long glass fiber reinforced polypropylene composite material for instrument panel frameworks according to claim 1, wherein: the antioxidant is one or a combination of a plurality of hindered phenol antioxidants 1010, phosphite antioxidants 168, nitrogen oxide-resistant antioxidants GA80 and the like.
6. The method for preparing the long glass fiber reinforced polypropylene composite material for the instrument panel framework according to any one of claims 1 to 5, wherein the method comprises the following steps: the method comprises the following steps:
1): weighing raw materials of polypropylene resin, hyperbranched polymer and other auxiliary agents according to the weight ratio, putting the weighed raw materials into a high-speed mixer, uniformly mixing, and then feeding into an impregnation tank through a double-screw extruder;
2): and (3) carrying out bracing, cooling, granulating and drying treatment on the continuous glass fiber after passing through the impregnation tank.
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| CN114044979A (en) * | 2021-11-17 | 2022-02-15 | 安庆会通新材料有限公司 | High-cohesiveness polypropylene composite material and preparation method thereof |
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