A kind of high temperature resistant halogen-free flame retardant abs and preparation method thereof

Abstract

The invention relates to the technical field of ABS modification, especially relates to a high temperature-resistant halogen-free flame retardant ABS and a preparation method thereof. The high temperature-resistant halogen-free flame retardant ABS is prepared from the following raw materials in parts by weight: 70-90 parts of ABS resin, 10-30 parts of PPO (Polyphenylene Oxide) powder, 3-7 parts of phosphorus-nitrogen series flame retardant, 0.2-1 part of pentaerythritol stearate and 0.2-1 part of dilauryl thiodipropionate. According to the invention, PPO powder is introduced, firstly, the PPO powder is naturally compatible to the S in the ABS, can be used as a toughening agent, and thus improves the mechanical property of the ABS; secondly, the ABS has self-extinguish ability and natural flame resistance, and can reduce dosage of the phosphorus-nitrogen series flame retardant; thirdly, the ABS has excellent heat resistance, and the heat resistance of the ABS after flaming retarding is improved obviously.

Description

technical field [0001] The invention relates to the technical field of ABS modification, in particular to a high-temperature-resistant halogen-free flame-retardant ABS and a preparation method thereof. Background technique [0002] ABS plastic has good heat resistance, high impact resistance and excellent processability. It is widely used in auto parts, household appliances and electronic components. The materials used for household appliances and office automation equipment shells have flame retardant requirements. Halogen compounds are often added to provide flame retardancy. Halogenated flame retardants have good cost performance, wide adaptability and moderate price, but they are harmful to the environment. [0003] In 2004, the Ministry of Information Industry of my country promulgated the "Administrative Measures for the Prevention and Control of Pollution by Electronic Information Products". In addition, in the fields of IT communication, electronic appliances, etc....

AI Technical Summary

Problems solved by technology

[0004] Due to the lack of aromatic groups on the main molecular chain of ABS, it is difficult to achieve V-0 level with halogen-free flame retardants

Internationally, the research on non-halogenation of ABS has been carried out for many years, and phosphorus-nitrogen flame retardants are mainly used. The efficiency of phosphorus-nitrogen flame retardants is high, but the addition of organic phosphorus is large, which seriously affects the mechanical properties and heat resistance of the material.