Weather resistant halogen-free flame retardant ABS resin and preparation process thereof

Abstract

The present invention discloses a weather-proof anti-flaming ABS resinoid. The compositions and the weight percentage thereof are as follows: 45 to 75 percent of ABS resinoid, 5 to 30 percent of polyester, 10 to 20 percent of fire retardant, 1 to 10 percent of plasticizer, 0.3 to 5 percent of photo-thermal stabilizer, 0.2 to 5 percent of nucleating agent, and 1 to 5 percent of processing accessory ingredient. The weather-proof anti-flaming ABS resinoid obtains largely improved fire retardancy and weatherability because polyester components are added, can be applied to the occasions such as electric switches, transformer cases, control panels of various electric appliances, and the like which directly contact light ray, have higher requirement on appearance and environment, can not use PVC alloy, and have strict requirement on the fire retardancy of the material. The resinoid has wide application prospect. In addition, the adopted twin-screw extrusion preparation process has the advantages of simple flow, high production efficiency, stable product quality, low cost, environment protection, easy industrial implementation, and the like.

Description

technical field [0001] The invention relates to a weather-resistant, halogen-free flame-retardant ABS resin and its preparation process, specifically, to a halogen-free ABS resin with high weather resistance and flame-retardant properties, which is applied to electrical switch shells and various electrical control panels. Resin and its preparation process. Background technique [0002] Flame-retardant ABS resins are widely used in office equipment, IT equipment and other fields because of their good mechanical properties and processing properties. However, the weather resistance of flame-retardant ABS resins is usually poor, because the double bonds in the toughening components are easy to break, which makes flame-retardant ABS resins prone to yellowing and lower impact strength, thus losing mechanical properties and appearance functions. . [0003] The prior art for improving the weather resistance of flame-retardant ABS resins is achieved by adding weather resistance add...

AI Technical Summary

Problems solved by technology

Adding weather resistance additives can improve the weather resistance of flame retardant ABS resins to a certain extent, but because flame retardants are added to flame retardant ABS resins, different flame retardant systems will poison the corresponding types of weather resistance agents and cannot play a role. Real weathering effect, and even weathering additives that match flame retardants have limited improvement in weathering performance, thus limiting their application

Although the existence of PC / ABS alloy and PVC / ABS alloy can greatly improve the weather resistance of flame-retardant ABS resins, they both have the defects of low cost performance and difficult processing, which limits their wide application.