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Low-luster anti-ultraviolet PC/ASA combination

An anti-ultraviolet and low-gloss technology, applied in the field of PC/ASA composition and polycarbonate/acrylonitrile-styrene-acrylate composition, can solve the problem of increasing the melt viscosity of the composition and reducing the gloss and gloss of thermoplastic polymer materials Reduce the effect and other issues

Active Publication Date: 2012-12-05
CHONGQNG PRET NEW MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has limited effect on reducing gloss
[0008] In addition, CN1890322 discloses a method of simultaneously using a resin containing large rubber particles and a gelled styrene-acrylonitrile copolymer to reduce the gloss of thermoplastic polymer materials, but the disadvantage of using these methods is that the melting of the composition is increased Viscosity is very unfavorable to the molding process of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4 and comparative example 1

[0043] After drying PC resin, ASA, SAN copolymer resin, ethylene-acrylic acid ester copolymer elastomer, colorant and other auxiliary agents are mixed in the composition ratio in Table 1 and then added to the twin-screw extruder (screw diameter 35mm, long 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 1.

[0044] Table 1:

[0045] composition

[0046] As can be seen from Table 1, compared with a...

Embodiment 5-8 and comparative example 2

[0048] After drying PC resin, ASA, SAN copolymer resin, ethylene-acrylic acid ester copolymer elastomer, colorant and other auxiliary agents are mixed in the composition ratio in Table 2 and then added to the twin-screw extruder (screw diameter 35mm, long 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.

[0049] Table 2:

[0050] composition

Comparative example 2

Example 5

Example 6 ...

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PUM

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Abstract

The invention relates to a low-luster anti-ultraviolet PC / ASA combination which is composed of polycarbonate, a graft copolymer of acrylonitrile, styrene and acrylic ester, a copolymer of acrylonitrile and styrene, a copolymer of gelatinized styrene and acrylonitrile, a copolymer elastomer of ethylene and acrylic ester, a light stabilizer and an antioxidant. The parts by weight of the above components are as follows: the polycarbonate: 30 to 90; the graft copolymer of acrylonitrile, styrene and acrylic ester: 5 to 30; the copolymer of acrylonitrile and styrene: 0 to 30; the copolymer of gelatinized styrene and acrylonitrile: 1 to 5; the copolymer elastomer of ethylene and acrylic ester: 2 to 10; the light stabilizer: 0.2 to 2; and the antioxidant: 0.2 to 1. With the characteristics of low luster, good ultraviolet resisting property and excellent flowing property, the PC / ASA plastic alloy can easily form a large-sized mould through filling and can be used for various automobile interior decorations and the like.

Description

technical field [0001] The invention relates to a polycarbonate / acrylonitrile-styrene-acrylate composition, in particular to a PC / ASA composition with low gloss and UV resistance, and belongs to the field of polymer composite materials. Background technique [0002] Polycarbonate (PC) plastic has the advantages of high heat resistance, good transparency, high gloss, good toughness, etc., but it has poor fluidity and difficult molding; the product is sensitive to gaps and prone to stress cracking; it is not resistant to solvents and is expensive. [0003] There are many known methods to improve these shortcomings by preparing PC plastic alloys, among which PC / ABS plastic alloys are the most common method. PC / ABS alloys have good comprehensive properties such as low melt viscosity, good processability, and high impact strength. . [0004] Acrylonitrile-styrene-acrylate (ASA) is an engineering plastic with physical and mechanical properties similar to ABS. ASA plastic has goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L51/00C08K5/3475C08K5/13C08K5/524
Inventor 陈永东张祥福周文
Owner CHONGQNG PRET NEW MATERIAL
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