Preparation method of halogen-free flame-retardant high-impact polystyrene

Abstract

The invention discloses halogen-free flame retardant high impact polystyrene and a preparation method thereof. The halogen-free flame retardant high impact polystyrene is prepared from the following components in weight part: 100 parts of high impact polystyrene resin, 1-15 parts of vinyl benzene-butadiene-vinyl benzene blocked copolymer, 10-30 parts of halogen-free composite flame retardant, 0.2-2.5 parts of lubricating agent, and 0.3-1.6 parts of stabilizing agent; the halogen-free composite flame retardant is prepared from phosphate ester, zinc borate and phenolic resin in weight ratio of (10-20) to 1 to (5-10); the phosphate ester is triphenyl phosphate or dibenzyl phosphate. The halogen-free flame retardant high impact polystyrene has the advantages of excellent flame retardant property, high comprehensive mechanical strength, good melt flowability, low production cost, excellent environment protection and no toxicity.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a halogen-free flame-retardant high-impact polystyrene and a preparation method thereof. Background technique [0002] High-impact polystyrene (HIPS) resin is a general-purpose engineering plastic. Because of its good comprehensive mechanical properties, it is widely used in electronic and electrical accessories. [0003] High-impact polystyrene resin itself is a flammable and combustible material with an oxygen index of 17%. When burning, it has a high heat release rate, a large calorific value, a fast flame propagation speed, and is not easy to extinguish. Sometimes it produces thick smoke and toxic gases. This will not only cause serious property losses, but also pose a great threat to human life safety and living environment. [0004] As people pay more and more attention to health, safety, environment and ecological protection, the flame retardant stand...

AI Technical Summary

Problems solved by technology

However, there are two disadvantages in the use of polyphenylene ether: the melt fluidity of polyphenylene ether is poor, which affects the molding and processing performance of the material; the price of polyphenylene ether is high, resulting in high production costs

This document needs to use a variety of flame retardants, among which the inorganic flame retardants used have a great influence on the mechanical properties of the material, and the selection of three types of intumescent flame retardants including acid sources, carbon sources and gas sources not only greatly increases the production costs and increased production complexity