PC/ABS material composition for relieving yellow discoloration

A technology of ABS material and composition, applied in the field of PC/ABS material composition, can solve problems such as chromatic aberration

Active Publication Date: 2010-06-30
CHONGQNG PRET NEW MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a PC / ABS material composition that improves yellow discoloration, so as to solve and improve the problem of PC / ABS color difference caused by material yellowing under light conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5 and comparative example 1

[0036] After mixing the dried PC resin, ABS, acrylate graft rubber, colorant and other auxiliary agents according to the composition ratio in Table 1, add them to the twin-screw extruder (screw diameter 35mm, length-diameter ratio L / D=36 ) in the main barrel. The control temperature of each section of the main barrel (from the feeding port to the head outlet) is 210 °C, 240 °C, 260 °C, 260 °C, 250 °C, and the twin-screw speed is 300 rpm. Granules to get the product. The above product was dried in a blast oven at 85°C for 5 hours, and then injected into a standard spline by a plastic injection molding machine, and the injection temperature was 250°C. The injection-molded specimens were placed for at least 24 hours at 50% relative humidity and 23°C for performance testing. The test results are shown in Table 1.

[0037] Table 1

[0038] composition

[0039] It can be seen from Table 1 that the color difference ΔE of the PC / ABS example prepared by the present invent...

Embodiment 6-9

[0041] After mixing the dried PC resin, ABS, acrylate graft rubber, colorant and other auxiliary agents according to the composition ratio in Table 3, add them to the twin-screw extruder (screw diameter 35mm, length-diameter ratio L / D=36 ) in the main barrel. The control temperature of each section of the main barrel (from the feeding port to the head outlet) is 210 °C, 240 °C, 260 °C, 260 °C, 250 °C, and the twin-screw speed is 300 rpm. Granules to get the product. The above product was dried in a blast oven at 85°C for 5 hours, and then injected into a standard spline by a plastic injection molding machine, and the injection temperature was 250°C. The injection-molded specimens were placed for at least 24 hours at 50% relative humidity and 23°C for performance testing. The actual test results are shown in Table 2.

[0042] Table 2

[0043] composition

Example 5

Example 6

Example 7

Example 8

PC

30

50

65

85

ABS

...

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PUM

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Abstract

The invention discloses a PC / ABS material composition for relieving the yellow discoloration, which is prepared from the following ingredients in percentage by weight: 10 to 60 parts of acrylonitrile-butadiene-styrene graft copolymers, 30 to 85 parts of polycarbonate, 0 to 10 parts of acrylics graft rubber, 0.25 to 0.88 parts of coloring agents, 0 to 1 part of antioxidizers and 0 to 1 part of light stabilizers. Yellow dyes without light illumination resistance performance exist in a dye system, and the dyes can not influence the whole coloring process of plastics in the plastic coloring process, but in the light illumination process, the dyes gradually fade, the PC / ABS materials carry out yellow discoloration in the light illumination process, so the two mutually inconsistent processes have the mutual counteraction effect, and the color aberration of the whole PC / ABS composition is reduced after the light illumination. At the same time, the mechanical property of the composition material is not obviously reduced.

Description

technical field [0001] The invention relates to a PC / ABS material composition, in particular to a PC / ABS material composition with improved yellow discoloration, which solves the problem that the color of modified plastics changes after being irradiated. Background technique [0002] PC / ABS plastic has good heat resistance, high impact resistance and excellent processability, and is widely used in automotive interior parts. The changes in color and gloss of plastic materials after long-term sunlight (especially ultraviolet light) irradiation have a great impact on the performance and appearance of automotive interior parts. Generally speaking, automotive original equipment manufacturers (OEMs) have set strict light radiation requirements for the color of automotive interior materials. For example, Volkswagen's PV1303 interior material lighting standard requires interior materials to be exposed to 3 to 10 hours of light. After the cycle (usually 5 cycles), the color fastness...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08K13/02C08K3/22
Inventor 李明俞恒杰陈永东张祥福周文
Owner CHONGQNG PRET NEW MATERIAL
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