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PC/ABS alloy with excellent automotive paint crack resistance and preparation method thereof

A paint and performance technology, applied in the field of PC/ABS alloy and its preparation, can solve the problems of cracking, strong corrosion, etc., and achieve high product yield, good resistance to acetone and ethyl acetate, and good resistance to paint cracking. Effect

Active Publication Date: 2017-09-01
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a PC / ABS alloy with excellent cracking resistance to automobile paint and its preparation method, so as to solve the problem of cracking after painting due to the strong corrosion of solvents on PC / ABS during the painting process

Method used

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  • PC/ABS alloy with excellent automotive paint crack resistance and preparation method thereof
  • PC/ABS alloy with excellent automotive paint crack resistance and preparation method thereof
  • PC/ABS alloy with excellent automotive paint crack resistance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 8

[0061] Embodiment 8: Evaluation of implementation effect

[0062] The PC / ABS prepared in the above Comparative Examples 1-3 and Examples 1-6 were subjected to related tests: melting was tested according to ISO1133; notched impact strength was tested according to ISO 179; Vicat softening temperature was tested according to ISO 306; mold shrinkage was tested according to Tested according to ISO 294-4; chemical resistance performance evaluation, fixed on a 1 / 4 elliptical mold with a tensile spline, and then evenly coated acetone / ethanol and ethyl acetate / ethanol on the surface of the spline at a ratio of 1:1 The mass ratio of mixed solvents was used to observe the time for cracks to appear on the surface of the spline. After the actual painting verification, after the solvent is applied, the cracking time of the spline exceeds 20 minutes is a qualified product. It can be seen from comparative examples 1 to 3 that the chemical resistance of PC / ABS can be improved by adding silico...

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Abstract

The invention relates to the field of high polymer materials, in particular to PC / ABS alloy with excellent automotive paint crack resistance. The PC / ABS alloy is prepared from the following components in parts by weight: 50-70 parts of PC resin, 10-30 parts of ABS resin, 20-30 parts of SAN resin, 1-5 parts of a chemical crack resistant reagent, 1-5 parts of compatibilizer, 0.1-1 part of antioxidant and 0.1-1 part of lubricant. The invention further provides a preparation method for the PC / ABS alloy with excellent automotive paint crack resistance. According to the PC / ABS alloy with excellent automotive paint crack resistance, through synergistic use of ethylene polymer and polystyrene-acrylonitrile with high nitrile (AN) content, very good paint crack resistance is achieved on the surface layer of PC / ABS and inside PC / ABS, so that the PC / ABS does not have a bad cracking phenomenon as a result of poor solvent resistance in a paint spraying process, and therefore, the product yield in the paint spraying process is greatly increased.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a PC / ABS alloy with excellent cracking resistance to automobile paint and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a linear polycarbonate, an amorphous engineering plastic with good toughness, transparency and heat resistance. ABS has good fluidity and impact performance. Therefore, the blending of PC and ABS can combine the excellent properties of both PC and ABS, which can not only improve the heat resistance and tensile strength of ABS, but also reduce the melt viscosity of PC, improve processing performance, and reduce the risk of stress cracking. sensitivity and can reduce costs. [0003] In terms of chemical resistance, PC / ABS has certain acid resistance, but it is not resistant to strong alkaline solvents; ketones, esters and aromatic solvents can damage PC and cause cracking. [0004] PC / ABS materials are widely used in automobi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L25/12C08L33/08
Inventor 张毅赵志刚朱爱华岳同健张龙胡同云蒲伟
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC
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