Spraying-free high-transparent high-glossy acrylonitrile butadiene styrene (ABS) material and preparation method thereof

Abstract

The invention discloses a spraying-free high-transparent high-glossy acrylonitrile butadiene styrene (ABS) alloy material and a preparation method thereof. The ABS alloy material comprises, by weight, 30-45% of polymethyl methacrylate (PMMA), 30-45% of acrylonitrile styrene (AS), 10-30% of flexibilizer, 1-5% of compatilizer, 0.3% of antioxidant and 0.7-2% of lubricant. The material has good transparency and high impact strength, modulus, surface glossy and surface scraping resistance, retains good processability and toughness of the ABS alloy material, and simultaneously has the advantages of good weather resistance, surface hardness, chemical resistance and glossy and the like of the PMMA and AS resin. The spraying-free high-transparent high-glossy ABS alloy material and the preparation method expand an application range of the ABS material in transparent materials. The preparation method includes the following steps: mixing raw materials according to the ratio, adding mixed resin into a plastic extruding machine, controlling the temperature to be 190-225 DEG C and granulating to obtain the spraying-free high glossy transparent ABS alloy material.

Description

[technical field] [0001] The invention relates to the technical field of ABS alloy materials, in particular to a new method for obtaining spray-free high-gloss transparent ABS alloy materials through twin-screw extruder extrusion. [Background technique] [0002] ABS resin: chemical name acrylonitrile-butadiene-styrene plastic has a wide range of sources, low price, excellent impact resistance, low temperature resistance, chemical resistance and excellent electrical properties. It also has the characteristics of easy processing and stable product size. . However, the scratch resistance of ABS material is poor. Therefore, before ABS alloy materials are applied in the terminal field, most ABS materials need to be sprayed to obtain sufficient scratch resistance. The thickness of ABS plastic coating is generally 15-20μm, and usually requires spraying 2~3 Tao can be completed. After one coat, it needs to be allowed to dry before a second coat. Surfaces that require a high gloss...

AI Technical Summary

Problems solved by technology

[0003] The spray-free high-gloss ABS resin currently used in the market is basically made by adding PMMA resin and compatibilizer MBS to ABS resin. However, the high-gloss ABS resin produced by this process has the following defects in actual production: 1. ) Due to the incompatibility between PMMA and free acrylonitrile in ABS resin, there is a phase separation phenomenon between PMMA resin and ABS resin on the microscopic phase. Color spots appear, so the material has a low product qualification rate during injection molding, which causes a lot of waste in actual production

2) Due to the opacity of the ABS resin itself, the alloy material is also opaque, resulting in the need to add more toner or even use higher-priced toner in order to achieve a bright and shiny effect in the later dyeing process. dyes, thus greatly increasing the cost price of using the material

[0004] The transparent ABS resin currently used in the market is obtained through polymerization in petrochemical enterprise reactors, so the performance of the transparent ABS resin is single, especially the hardness of the material does not meet the scratch resistance performance requirements (pencil hardness is less than H grade), so transparent ABS on the market Although the resin has high transparency, its hardness does not meet the requirements of use, which greatly limits the use of this material in various application fields

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