PC/ABS alloy with excellent damp-heat aging resistance and preparation method thereof

A technology with aging performance and resistance to humidity and heat, which is applied to PC/ABS alloys with excellent resistance to humidity and heat aging and their preparation, and improves the high temperature and humidity resistance of PC/ABS and other polymer materials. Deterioration of wet performance, poor hydrolysis resistance and other problems, to achieve the effect of improving high temperature and high humidity resistance and avoiding hydrolysis

Inactive Publication Date: 2020-06-05
SHANGHAI KUMHOSUNNY JINSHAN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrolysis resistance of PC is very poor, and the root cause is that the ester group in PC is easy to hydrolyze, especially under high temperature and high humidity, water will partially gasify into water vapor and penetrate into the molecules, which promotes the degradation of PC, which also limits PC and its alloys. The use of materials in more harsh environments, especially the halogen-free flame-retardant PC / ABS of batteries in the new energy battery industry, almost has high temperature and high humidity requirements, so it is urgent to improve the high temperature and high humidity resistance of PC / ABS materials Technical goals
[0003] By inquiring about relevant patents, there is currently no effective and feasible technical means to solve the problem of serious degradation of high temperature and high humidity resistance of PC / ABS

Method used

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  • PC/ABS alloy with excellent damp-heat aging resistance and preparation method thereof
  • PC/ABS alloy with excellent damp-heat aging resistance and preparation method thereof
  • PC/ABS alloy with excellent damp-heat aging resistance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-4

[0030] Embodiments 1-4 provide a method for preparing a PC / ABS alloy with excellent heat and humidity resistance, the content of each component of the alloy in parts by weight is shown in Table 1, and the preparation method is as follows:

[0031] Mix PC, ABS, hydrophobic agent, toughening agent, antioxidant and lubricant in a high-speed mixer (rotating speed: 100-300r / min, mix for 10-30min), and put the mixed material into twin-screw extrusion Machine melt blending extrusion, control the extrusion temperature at 170-230°C, the screw speed at 200-500rpm, the pressure at 2-3MPa, and obtain the product after underwater pelletizing and drying.

Embodiment 5

[0033] The present embodiment provides a kind of preparation method of the PC / ABS alloy excellent in wet heat aging resistance, and this method is 78 weight parts of 7025PJ type PC resin, ABS 3453 resin 20 weight parts, EM500 toughening agent 2 weight parts, CMG9801 0.5 Parts by weight, 0.5 parts by weight of 3-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate antioxidant, 0.5 parts by weight of simethicone lubricant mixed in a high-speed mixer Evenly, put the uniformly mixed material into a twin-screw extruder for melt blending and extrusion, control the extrusion temperature at 170-230°C, the screw speed at 200-500rpm, and the pressure at 2-3MPa. After underwater pelletizing and drying get the product.

Embodiment 6

[0035] This example is basically the same as Example 3, except that the added hydrophobic agent is low-molecular polyvinyl fluoride (molecular weight: 650), thereby preparing a method for preparing a PC / ABS alloy with excellent moisture-heat aging resistance.

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Abstract

The invention relates to a PC/ABS alloy with excellent damp-heat aging resistance and a preparation method thereof. The PC/ABS alloy comprises the following components in parts by weight: 50-80 partsof PC resin, 20-45 parts of ABS resin, 2-5 parts of a flexibilizer, 0.5-5 parts of a hydrophobic agent, 0.1-2 parts of an antioxidant and 0.1-2 parts of a lubricant. The preparation method of the alloy comprises the following steps: (a) adding the PC resin, the ABS resin, the hydrophobic agent, the flexibilizer, the antioxidant and the lubricant into a mixing stirrer and mixing the materials, and(b) blending and granulating the mixture obtained in the step (a) through a double-screw extruder, and carrying out melt extrusion and granulation to obtain the PC/ABS alloy. Compared with the prior art, the low-molecular-weight hydrophobic additive is adopted to enhance the damp-heat aging resistance of the PC/ABS, and the PC/ABS material with excellent long-term damp-heat aging resistance can beprepared.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a technical method for improving the high-temperature and high-humidity resistance of PC / ABS and other polymer materials, specifically a PC / ABS alloy with excellent damp-heat aging resistance and a preparation method thereof. Background technique [0002] PC / ABS alloy has excellent mechanical and thermal properties, and is widely used in automobiles, home appliances, digital products and other fields. However, the hydrolysis resistance of PC is very poor, and the root cause is that the ester group in PC is easy to hydrolyze, especially under high temperature and high humidity, water will partially gasify into water vapor and penetrate into the molecules, which promotes the degradation of PC, which also limits PC and its alloys. The use of materials in more harsh environments, especially the halogen-free flame-retardant PC / ABS of batteries in the new energy battery industry, almos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/06C08L51/04C08L83/04C08L27/14C08K5/134C08K5/103C08K5/09
CPCC08L69/00C08L2205/035C08L2205/02C08L2201/08C08L55/02C08L51/06C08L51/04C08K5/1345C08K5/103C08L83/04C08L27/14C08K5/09
Inventor 刘辉辉周中玉周霆辛敏琦
Owner SHANGHAI KUMHOSUNNY JINSHAN PLASTICS CO LTD
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