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High-impact and wear-resistant PP/PA (polypropylene/polyamide) composite material and preparation method thereof

A composite material and high-impact technology, which is applied in the field of high-impact and wear-resistant PP/PA composite materials and its preparation, can solve the problems of easy catalysis, crushing, reduction of material strength and stiffness, poor material toughness and impact resistance, etc. problems, achieve the effect of improving mechanical properties, reducing wear and improving wear resistance

Active Publication Date: 2019-03-08
CHUZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The method of improving the impact performance of PP composites has a good toughness effect in the PP / elastomer binary blend system, but it often reduces the strength and stiffness of the material; the traditional method of improving the wear resistance of PP composites is in PP composites. Add wear-resistant agent PTFE or molybdenum disulfide to compound with minerals at the same time, but the toughness and impact resistance of the material obtained in this way are poor, and the product is easy to catalyze and break in low temperature environment

Method used

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  • High-impact and wear-resistant PP/PA (polypropylene/polyamide) composite material and preparation method thereof
  • High-impact and wear-resistant PP/PA (polypropylene/polyamide) composite material and preparation method thereof
  • High-impact and wear-resistant PP/PA (polypropylene/polyamide) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 100 parts of PP, 35 parts of PA, 7 parts of maleic anhydride grafted polyolefin elastomer, 3 parts of oxazoline functionalized polystyrene, β-(3,5-di-tert-butyl-4-4-hydroxyphenyl)propionic acid 0.2 part of n-octadecyl alcohol ester, 0.1 part of dilauryl thiodipropionate, 0.2 part of calcium stearate, and 0.3 part of 2-(2-hydroxy-3,5-di-tert-amyl)benzotriazole.

[0026] Pour PP, PA, and compatibilizer into a high-speed mixer according to the ratio and mix for 10 minutes, then add antioxidant, lubricant, and stabilizer and mix for 15 minutes to obtain a premix. The temperature of the mixer is 95° C., and the rotation speed is 800 rpm.

[0027] Feed the premixed material into the twin-screw extruder, and after extrusion, water cooling, pelletizing and drying, high impact and wear-resistant PP / PA composite materials are obtained; the temperature of each zone of the twin-screw extruder is: 1 The temperature in zone 185°C, the temperature in zone 2 is 190°C, the temperature ...

Embodiment 2

[0044] 100 parts of PP, 40 parts of PA, 7.7 parts of maleic anhydride grafted polyolefin elastomer, 3.3 parts of oxazoline functionalized polystyrene, N,N-bis(2,2,6,6,-tetramethyl-4-piperone 0.4 part of pyridyl)-N,N-dialdehyde hexamethylenediamine, 0.1 part of n-octadecyl β-(3,5-di-tert-butyl-4-4-hydroxyphenyl) propionate and 0.2 part of dilauryl propionate, 0.3 part of paraffin wax, grafting rate of maleic anhydride grafted polyolefin elastomer is 1.2%, and grafting rate of oxazoline functionalized polystyrene is 1.6%.

[0045] Pour PP, PA, and compatibilizer into a high-speed mixer according to the ratio and mix for 10 minutes, then add antioxidant, lubricant, and stabilizer and mix for 15 minutes to obtain a premix. The temperature of the mixer is 90° C., and the rotation speed is 800 rpm.

[0046] The premixed material is fed into a twin-screw extruder, and after extrusion, water cooling, pelletizing and drying, a high-impact and wear-resistant PP / PA composite material is...

Embodiment 3

[0048] 100 parts of PP, 30 parts of PA, 8.4 parts of maleic anhydride grafted polyolefin elastomer, 3.6 parts of oxazoline functionalized polystyrene, 0.3 parts of bis-2,2,6,6-tetramethyl piperidinyl sebacate 0.3 parts of n-octadecyl β-(3,5-di-tert-butyl-4-4-hydroxyphenyl) propionate, 0.2 parts of dilauryl thiodipropionate, 0.2 parts of zinc stearate, The grafting rate of maleic anhydride grafted polyolefin elastomer was 1.2%, and the grafting rate of oxazoline functionalized polystyrene was 1.1%.

[0049] Pour PP, PA, and compatibilizer into a high-speed mixer according to the ratio and mix for 10 minutes, then add antioxidant, lubricant, and stabilizer and mix for 15 minutes to obtain a premix. The temperature of the mixer is 100° C., and the rotation speed is 800 rpm.

[0050] The premixed material is fed into a twin-screw extruder, and after extrusion, water cooling, pelletizing and drying, a high-impact and wear-resistant PP / PA composite material is obtained. The temper...

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Abstract

The invention discloses a high-impact and wear-resistant PP / PA (polypropylene / polyamide) composite material and a preparation method thereof. The high-impact and wear-resistant PP / PA composite material is prepared from 100 parts of PP, 30 to 40 parts of PA, 10 to 15 parts of a compatibilizer, 0.2 to 0.5 part of an antioxidant, 0.2 to 0.5 part of a stabilizer, 0.2 to 0.5 part of a lubricant and 10to 15 parts of a self-made filler. The raw materials are uniformly mixed through a high-speed mixer according to the proportions, and then the mixture is added into a double-screw extruder for meltedextrusion and granulation, so that the prepared PP / PA composite material has excellent impact performance, low-temperature impact performance, wear resistance and the like. The high-impact and wear-resistant PP / PA composite material prepared by the preparation method is used in the fields of automobiles, electronic appliances and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-impact and wear-resistant PP / PA composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a thermoplastic resin prepared by the polymerization of propylene. It is divided into isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene according to the position of the methyl group. three kinds. Non-toxic, odorless, low density, strength, stiffness, hardness and heat resistance are superior to low-pressure polyethylene, can be used at about 100 ° C, has good dielectric properties and high-frequency insulation and is not affected by humidity, but at low temperatures Brittle, not wear-resistant, easy to age. The impact resistance of polypropylene is poor, and the wear resistance cannot meet the demand of high strength loss, which seriously limits its application range. [0003] Polyamide (PA) refers...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L77/00C08L51/06C08L25/06C08K5/134C08K5/372C08K5/098C08K5/3475C08K9/06C08K3/34C08K7/00C08K13/06
CPCC08L23/12C08L2205/035C08L2205/08C08L77/00C08L51/06C08L25/06C08K5/1345C08K5/372C08K5/098C08K5/3475C08K9/06C08K3/346C08K7/00C08K13/06
Inventor 汪蓓蓓周玲玲郑娜肖陆飞梁建军
Owner CHUZHOU VOCATIONAL & TECHN COLLEGE
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