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Super-tough and brake fluid-resistant ASB/PBT alloy material and preparation method thereof

An alloy material and brake fluid technology, applied in the field of super tough, brake fluid resistant ABS/PBT alloy material and its preparation, which can solve the problems of poor compatibility and poor impact resistance.

Inactive Publication Date: 2017-09-15
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ABS is an amorphous resin, and PBT is a crystalline polyester. The compatibility of the two resins is poor. The existing ABS / PBT alloy materials have poor impact resistance. Therefore, it is necessary to solve the compatibility of alloy materials and improve their resistance. Impact performance

Method used

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  • Super-tough and brake fluid-resistant ASB/PBT alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1～7 and comparative example 1～4

[0034] According to the formula in Table 1, mix the corresponding components evenly, and put them into the main feed of the twin-screw extruder with a length-to-diameter ratio of 48:1. ℃~220℃, the temperature of the fifth to eighth zone is set at 220℃~240℃, the temperature of the ninth to eleventh zone is set at 210℃~220℃, the temperature of the machine head is set at 230℃~240℃, after blending, Extrude, cool, air-dry, and granulate to obtain granular ABS / PBT alloy; then the obtained granules are injection-molded at 220° C. to 240° C. to form specimens corresponding to different tests.

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Abstract

The invention discloses a super-tough and brake fluid-resistant ASB / PBT alloy material and a preparation method thereof. The alloy material contains the following components in percentage by weight: 45wt%-66wt% of ABS resin, 30wt%-40wt% of PBT resin, 1wt%-4wt% of a compatilizer, 0-2wt% of a compatilizer synergist, 2wt%-8wt% of a flexibilizer and 0.6wt%-1.8wt% of other aids. By virtue of PMMA-cooperated SAG compatibilization, the interfacial strength of the alloy is enhanced, the shock resistance of the material is increased, and the use amount of the compatilizer is decreased; by utilizing EBA as the flexibilizer, the shock resistance of the material is increased, and meanwhile, the liquidity of the material is improved; and by adjusting the proportion of the flexibilizer so as to adjust the fusion index of the alloy material, the alloy material can meet different processing conditions of injection molding of a battery shell. The obtained ASB / PBT alloy material simultaneously has the characteristics of ABS and PBT and further has the characteristics of high shock resistance, excellent brake fluid resistance, stable dimension, adjustable liquidity and the like, and the comprehensive performance of the ASB / PBT is improved. A processing process comprises the steps of mixing, fusion extrusion, granulation, drying and the like. A preparation process is simple and suitable for being applied to batch production.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a super-tough, brake fluid-resistant ABS / PBT alloy material and a preparation method thereof. Background technique [0002] The crisis of traditional energy supply and environmental pollution are problems facing the world. Electric vehicles are a new trend in future development. As the power source of electric vehicles, batteries need to undergo various tests and remain safe and stable. Due to the advantages of ABS (acrylonitrile-styrene-butadiene copolymer) easy processing, impact resistance, low temperature resistance, good gloss, moderate mechanical properties, and stable size, it is widely used in traditional automotive battery casing materials, but ABS has poor oil resistance. When the battery is in use, if the shell comes into contact with the brake fluid, it will be stress-cracked, causing a great safety hazard. PBT (polybutylene terephthalate) is a crystalline thermoplas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L67/02C08L23/08C08L25/14C08L33/12B29C47/92B29C48/92
CPCC08L55/02B29C48/92B29C2948/9258B29C2948/92704C08L2205/025C08L2205/035C08L2205/08C08L67/02C08L23/0884C08L25/14C08L23/0869C08L33/12
Inventor 于海鸥黄浩王灿耀易庆锋何继辉桑杰
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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