PC/ABS material composition for relieving yellow discoloration

A technology of ABS material and composition, which is applied in the field of PC/ABS material composition, and can solve problems such as color difference

Active Publication Date: 2012-10-17
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 drying PC resin, ABS, acrylic grafted rubber, coloring agent and other auxiliary agents are mixed according to the composition ratio in Table 1, join the twin-screw extruder (screw diameter 35mm, length-to-diameter ratio L / D=36 ) in the main barrel. The temperature control of each section of the main barrel (from the feeding port to the nozzle outlet) is 210°C, 240°C, 260°C, 260°C, and 250°C respectively, and the twin-screw speed is 300 rpm. pellets to obtain the product. The above product was dried at 85° C. for 5 hours in a blast oven and injected into a standard spline with a plastic injection molding machine at an injection molding temperature of 250° C. The injection-molded strips were placed at 50% relative humidity at 23°C for at least 24 hours before performance testing. The test results are shown in Table 1.

[0037] Table 1

[0038] composition

[0039] antioxidant

[0040] It can be seen from Table 1 that the PC / ABS embodiment pr...

Embodiment 6-9

[0042] After drying PC resin, ABS, acrylic graft rubber, coloring agent and other auxiliary agents are mixed according to the composition ratio in Table 3, join the twin-screw extruder (screw diameter 35mm, length-to-diameter ratio L / D=36 ) in the main barrel. The temperature control of each section of the main barrel (from the feeding port to the nozzle outlet) is 210°C, 240°C, 260°C, 260°C, and 250°C respectively, and the twin-screw speed is 300 rpm. pellets to obtain the product. The above product was dried at 85° C. for 5 hours in a blast oven and injected into a standard spline with a plastic injection molding machine at an injection molding temperature of 250° C. The injection-molded strips were placed at 50% relative humidity at 23°C for at least 24 hours before performance testing. The actual test results are shown in Table 2.

[0043] Table 2

[0044] composition

Example 5

Example 6

Example 7

Example 8

PC

30

50

65 ...

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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 of color change caused by modified plastics exposed to light. 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 color and gloss changes of plastic materials after long-term sunlight (especially ultraviolet light) irradiation have a great influence on the performance and appearance of automotive interior parts. Generally speaking, automotive original equipment manufacturers (OEMs) have set strict requirements for the light radiation of the color of automotive interior materials. For example, Volkswagen’s PV1303 interior material lighting standards require interior materials After one cycle (usually 5 cycles), the color fastness level must be ≥4. [0003] However, du...

Claims

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Application Information

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Patent Type & Authority Patents(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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