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A kind of high weather resistance and high gloss white spray-free asa material and preparation method thereof

A spray-free, white technology, applied in the field of polymer materials, can solve the problems of insufficient xenon lamp aging, scratch resistance that cannot meet the requirements of automotive exterior parts, and low gloss, so as to achieve improved gloss, improved performance, and simple process flow Effect

Active Publication Date: 2022-02-22
浙江科普特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research and development and preparation of white spray-free ASA materials in China are still very little, and the gloss is generally not high (gloss is above 80glass), and the aging of xenon lamps is insufficient (3500kj / m 2 above), and the scratch resistance performance cannot meet the requirements of automotive exterior parts

Method used

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  • A kind of high weather resistance and high gloss white spray-free asa material and preparation method thereof
  • A kind of high weather resistance and high gloss white spray-free asa material and preparation method thereof
  • A kind of high weather resistance and high gloss white spray-free asa material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of ASA material comprises the following components by mass percentage:

[0027]

[0028] Among them, the colorant consists of 70% titanium dioxide, 20% barium sulfate and 10% zinc oxide.

[0029] Wherein, the rubber is three or more copolymers of butyl acrylate, vinyl triethoxysilane, methyl methacrylate and ethyl acrylate, the content of butyl acrylate is 55%, vinyl triethyl acrylate Oxysilane content 5%.

[0030] The preparation method of the ASA material: mix the rubber, SAN resin, colorant, UV-770, and antioxidant 1010 in the above mass percentages, send them into a twin-screw extruder through a weight-loss weighing scale, and process them at 220°C Granulate. The twin-screw diameter of the twin-screw extruder is 65mm, the rotating speed is 850rpm, and the feeding accuracy is within 0.5%.

Embodiment 2

[0032] A kind of ASA material comprises the following components by mass percentage:

[0033]

[0034]

[0035] Wherein, the rubber is three or more copolymers of butyl acrylate, vinyl triethoxysilane, methyl methacrylate and ethyl acrylate, the content of butyl acrylate is 55%, vinyl triethyl acrylate Oxysilane content 5%.

[0036] Wherein, the scratch-resistant agent is a mixture of polymethylsiloxane and fumed silica, and the ratio of polymethylsiloxane and fumed silica is 3:1.

[0037] Among them, the colorant consists of 70% titanium dioxide, 20% barium sulfate and 10% zinc oxide.

[0038] The preparation method of the ASA material: after mixing the rubber, SAN resin, scratch-resistant agent, colorant, UV-P, and antioxidant 168 in the above mass percentages, they are sent into a twin-screw extruder through a weight-loss weighing scale, and then Processing and granulation at 220°C. The twin-screw diameter of the twin-screw extruder is 65mm, the rotating speed is 8...

Embodiment 3

[0040] A kind of ASA material comprises the following components by mass percentage:

[0041]

[0042] Wherein, the rubber is three or more copolymers of butyl acrylate, vinyl triethoxysilane, methyl methacrylate and ethyl acrylate, the content of butyl acrylate is 55%, vinyl triethyl acrylate Oxysilane content 5%.

[0043] Wherein, the scratch-resistant agent is a mixture of polymethylsiloxane and fumed silica, and the ratio of polymethylsiloxane and fumed silica is 3:1.

[0044] Among them, the colorant consists of 70% titanium dioxide, 20% barium sulfate and 10% zinc oxide.

[0045] The preparation method of the ASA material: mix the rubber, SAN resin, coloring agent, anti-scratch agent, UV-770, and antioxidant 1010 in the above mass percentages, and then send them into a twin-screw extruder through a weight-loss weighing scale. Processing and granulation at 220°C. The twin-screw diameter of the twin-screw extruder is 65mm, the rotating speed is 850rpm, and the feedin...

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Abstract

The invention provides a high-weather-resistant high-gloss white spray-free ASA material and a preparation method thereof, which comprises 15-45% rubber; 35-65% SAN resin; 1-5% scratch-resistant agent; 1-3% colorant; 0.1‑1.0% anti-UV agent; 0.2‑0.6% antioxidant. After mixing, it is sent to a twin-screw extruder, processed and granulated at 200-240°C to obtain a high-weather resistance high-gloss white ASA material without spraying. The scratch performance meets the SPEC. standard for exterior parts, and the weather resistance performance meets 3500kJ / m2 (according to SAE J2527 standard). It can be used instead of paint spraying, and it is environmentally friendly and recyclable.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a highly weather-resistant high-gloss white spray-free ASA material and a preparation method thereof. Background technique [0002] Acrylonitrile-styrene-acrylate terpolymerization (hereinafter referred to as ASA) material is a ternary graft copolymer composed of acrylonitrile (A), styrene (S) and acrylate (A). Compared with ABS, Due to the introduction of acrylate rubber without double bonds to replace butadiene rubber, its weather resistance has been substantially improved and has excellent weather resistance characteristics, which are about 10 times higher than ABS, so it is often used to replace ABS materials to improve weather resistance. At the same time, ASA material also has the advantages of excellent mechanical properties, convenient processing and molding, recyclable scraps and less investment in equipment, etc., and is widely used in the construction industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/12C08L33/08C08K13/02C08K3/22C08K3/30
CPCC08L25/12C08K2003/2241C08K2003/3045C08K2003/2296C08L2205/03
Inventor 周乐宁
Owner 浙江科普特新材料有限公司