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A kind of anti-scratch black bright PC/ABS alloy and preparation method thereof

A scratch-resistant and scratch-resistant technology, applied in the polymer field, can solve the problems of decreased impact strength of materials, decreased material toughness, whitish visual appearance, etc., and achieves good dispersibility, colorability, and scratch resistance. Good, bright looking effect

Active Publication Date: 2019-03-08
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, adding high-hardness resins (such as PMMA or high-hardness PC) or fillers can increase the surface hardness of the material, but it will cause a decrease in the toughness of the material
Commonly used anti-scratch agents include silicone powder, FTFE, etc. Silicone anti-scratch agents will migrate to the surface of the material during use, which will easily cause the surface of the high-gloss black material to become foggy and affect the appearance; while PTFE and PC / ABS are not compatible. Compatible, the extrusion process will cause extrusion swelling and cannot be processed
[0004] Chinese Patent Document No. CN 1032322701 discloses a scratch-resistant high-gloss PC / ABS composition and its preparation method. The scratch-resistant performance of the material is improved by adding high-hardness PMMA to the PC / ABS alloy, but this method will cause The impact strength of the material is significantly reduced
However, the addition of silicone oil will cause fogging on the surface of the high-gloss black material. Although it does not affect the gloss of the high-gloss surface, there will be a problem of whitening the visual appearance

Method used

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  • A kind of anti-scratch black bright PC/ABS alloy and preparation method thereof
  • A kind of anti-scratch black bright PC/ABS alloy and preparation method thereof
  • A kind of anti-scratch black bright PC/ABS alloy and preparation method thereof

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Embodiment 6

[0042] A scratch-resistant black bright PC / ABS alloy, which is prepared from the following components and raw materials in parts by weight: PC resin 55, ABS resin 40, toughening agent 3, scratch-resistant agent 1, high-gloss black sand 0.5, anti-scratch Oxygen 0.1, lubricant 0.1. Wherein, the PC resin used is bisphenol A polycarbonate resin, and the melt index under the condition of 300° C. / 1.2 kg is 10 g / 10 min. The ABS resin is a graft copolymer composed of acrylonitrile-butadiene-styrene, the melt index is 15g / 10min under the condition of 220°C / 10kg, and the weight percentage of rubber is 45%. The toughening agent is a terpolymer of methyl methacrylate, butadiene and styrene. The anti-scratch agent is PE-g-SAN, in which the Mn molecular weight of the PE main chain is 2000. The high-gloss black sand is composed of carbon black and a dispersant, the weight percentage of the carbon black is greater than 90%, and the dispersant is pentaerythritol stearate. The antioxidant is...

Embodiment 7

[0047]A scratch-resistant black bright PC / ABS alloy, which is prepared by using the following components and raw materials in parts by weight: PC resin 85, ABS resin 15, toughening agent 5, scratch-resistant agent 5, high-gloss black sand 2, anti-scratch Oxygen 2, lubricant 2. The PC resin is bisphenol A polycarbonate resin, and its melt index at 300°C / 1.2kg is 22g / 10min. The ABS resin is a graft copolymer composed of acrylonitrile-butadiene-styrene, the melt index is 30g / 10min under the condition of 220°C / 10kg, and the weight percentage of rubber is 55%. The toughening agent is a terpolymer of methyl methacrylate, butadiene and styrene. The anti-scratch agent is PE-g-SAN, in which the Mn molecular weight of the PE main chain is 5000. The high-gloss black sand is composed of carbon black and a dispersant, the weight percentage of the carbon black is greater than 90%, and the dispersant is pentaerythritol stearate. The antioxidant is 3-(3,5-di-tert-butyl-4-hydroxyphenyl) n-o...

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Abstract

The present invention relates to a scratch-resistant black bright PC / ABS alloy and a preparation method thereof, wherein the scratch-resistant black bright PC / ABS alloy is prepared from the following raw materials by weight: 55-85 parts of a PC resin, 15-40 parts of an ABS resin, 3-5 parts of a toughening agent, 1-5 parts of a scratch-resistant agent, 0.5-2 parts of high-light black sand, 0.1-2 parts of an antioxidant, and 01-2 parts of a lubricant. Compared to the PC / ABS alloy in the prior art, the PC / ABS alloy of the present invention has the following characteristics that the self-made PE-g-SAN scratch-resistant agent is added to the PC / ABS alloy, the PE chain segment lubricates and reduces the surface friction coefficient of the material so as to improve the scratch resistance of the material, and the SAN branch chain and the ABS in the matrix have good compatibility so as to reduce the fog generation problem on the highly bright black surface, such that the highly bright black PC / ABS alloy with characteristics of excellent scratch resistance and good surface effect can be prepared.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a scratch-resistant black bright PC / ABS alloy and a preparation method thereof. Background technique [0002] PC / ABS alloy has good processability, impact toughness and heat resistance, and has been widely used in interior and exterior parts of automobiles. Common black and bright materials include PC / ABS alloys, PMMA and their alloys, etc. Because PC / ABS alloys have poor scratch resistance, PMMA and their alloys have poor heat and impact resistance. Therefore, in high-gloss interior instrument frames, decorative strips and other components that require high impact resistance, high heat resistance and scratch resistance, most of them currently use PC / ABS alloy spray high-gloss paint. Due to the problems of high price, non-environmental protection, and low yield rate in spraying, it is particularly important to study how to improve the scratch resistance of the black and bright PC / ABS all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/04C08L87/00C08K13/02C08K3/04C08K5/103C08K5/134C08K5/526C08K5/09C08K5/101
CPCC08L69/00C08L2205/035C08L55/02C08L51/04C08L87/00C08K13/02C08K3/04C08K5/103C08K5/1345C08K5/526C08K5/09C08K5/101
Inventor 黄文娴李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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