High-weather-resistance acrylate resin composition and preparation method thereof

A resin composition and acrylate technology are used in the field of high weather-resistant acrylate resin compositions and their preparation, which can solve the problems of inferior low-temperature resistance performance as ABS resin, low-temperature cracking, poor weather resistance and the like, and achieve high low-temperature impact resistance. performance, increase heat distortion temperature, and improve the effect of material toughness

Active Publication Date: 2011-03-16
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of ABS resin in automotive interior parts is very successful, but because the polybutadiene rubber used contains unsaturated carbon-carbon double bonds, the weather resistance is very poor, and it cannot be directly applied to automotive exterior parts.
At present, ABS parts used in automotive exterior parts need surface treatment methods such as spraying and electroplating to improve their weather resistance, but further surface treatment processes are not only time-consuming and labor-intensive, but also cause serious environmental pollution problems. With the deterioration of the global environment, the application of high-pollution processes such as spraying and electroplating will be limited. This requires solving the problem of poor weather resistance from the ABS resin base material, and developing a high weather resistance, high strength, high heat resistance, high Low-temperature impact-resistant resin suitable for automotive exterior parts
[0003] ASA resin, AES resin and ACS resin replace unsaturated polybutadiene rubber in ABS resin with saturated acrylate rubber, EPDM rubber and polyvinyl chloride rubber, and the weather resistance has been greatly improved, but Since the glass transition temperature of these rubbers is higher than that of polybutadiene rubber, their low temperature resistance is not as good as that of ABS resin, and it is easy to cause low temperature cracking when used in automotive exterior parts.

Method used

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  • High-weather-resistance acrylate resin composition and preparation method thereof
  • High-weather-resistance acrylate resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] 25Kg SAN resin 2, 46Kg methyl methacrylate, 7Kg fluorine-containing polymer, 7Kg silicone rubber-containing polymer, 4Kg compatibilizer, 3Kg antioxidant were added to a high-speed mixer and stirred for 20 minutes before discharging to obtain Mixture A.

[0073] Add mixture A from the main feeding port of the twin-screw extruder, mix 4Kg light absorber and 4Kg light stabilizer first, then add it from the side feeding port of the twin-screw extruder, extrude and granulate to obtain weather-resistant masterbatch , the barrel temperature of the extruder is 140° C., and the screw speed is 180 rpm.

[0074] Put 20Kg of ASA resin 1, 15Kg of ASA resin 2, 45Kg of SAN resin 1, 10Kg of heat-resistant modifier, 0.5Kg of lubricant, and 0.3Kg of antioxidant into a high-speed mixer and stir for 5 minutes before discharging to obtain mixture B.

[0075] Add mixture B from the main feeding port of the twin-screw extruder, add 10Kg of weather-resistant masterbatch from the side feeding ...

Embodiment 2-4

[0077] In order to better reflect the characteristics of the above-mentioned high weather-resistant acrylate resin composition, the present invention uses Examples 2-4 to compare the influence of different weather-resistant masterbatch dosages and different heat-resistant modifier dosages on product performance. The material formula is shown in Table 1, and the steps are the same as in Example 1.

Embodiment 5

[0094] A preparation method of a highly weather-resistant acrylate resin composition, the method comprising the following steps:

[0095] (1) Preparation of weather-resistant masterbatch:

[0096] a, with 10g SAN resin 2, this resin is the copolymer of acrylonitrile and styrene of ultra-high fluidity, and acrylonitrile content is 15wt%, and the weight average molecular weight is 30000, and 30g weight average molecular weight is the methyl methacrylate polymerization of 10000 Material, 5g polyvinylidene fluoride, 5g silicone rubber-containing polymer, the silicone rubber content is 60wt%, the glass transition temperature of the rubber is lower than minus 100°C, 3g compatibilizer ethylene-methacrylate-maleic anhydride and 3g antioxidant, the antioxidant is the mixture of hindered monophenol and phosphite compound, put into the high-speed mixer and stir for 5min and then discharge to obtain the mixture;

[0097] b. Add the mixture from the main feeding port of the twin-screw ext...

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Abstract

The invention relates to a high-weather-resistance acrylate resin composition and a preparation method thereof. The raw materials of the high-weather-resistance acrylate resin composition comprise the following components in part by weight: 10 to 30 parts of acrylate rubber powder 1, 10 to 30 parts of acrylate rubber powder 2, 30 to 60 parts of SAN resin 1, 5 to 20 parts of heat-resistant modifier, 5 to 15 parts of weather-resistant master batch, 0.3 to 3 parts of lubricant and 0.05 to 0.5 part of antioxidant. The preparation method comprises the following steps of: stirring the raw materials except the weather-resistant master batch to obtain a mixture; adding the mixture from a main feed inlet of a double-screw extruder, and adding the weather-resistant master batch from a side feed inlet; and extruding and pelleting the raw materials by the double-screw extruder to obtain a sample. The high-weather-resistance acrylate resin composition prepared by the method has higher heat resistance, low-temperature impact resistance, weather resistance, excellent size stability and processing property, and is particularly suitable for automobile exterior trim parts, such as radiator grilles, rear-view mirrors, license plates, central pillar plates, outdoor triangular blocks and the like, with high requirements on weather resistance, heat resistance and low-temperature impact resistance.

Description

technical field [0001] The invention relates to a resin composition and a preparation method thereof, in particular to a highly weather-resistant acrylate resin composition and a preparation method thereof. Background technique [0002] Low energy consumption and low emission are the future trend of automobile development. It is estimated that in the next ten years, the weight of automobiles will be reduced by more than 20%. As one of the best optional materials, plastics are more and more widely used in automobiles. The application of ABS resin in automotive interior parts is very successful, but because the polybutadiene rubber used in it contains unsaturated carbon-carbon double bonds, the weather resistance is very poor, and it cannot be directly applied to automotive exterior parts. At present, ABS parts used in automotive exterior parts need surface treatment methods such as spraying and electroplating to improve their weather resistance, but further surface treatment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L25/12C08L33/12C08L27/16C08L27/18C08L27/12C08L83/04C08J3/22
Inventor 邱卫美丁宗勤周赞罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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