Halogen-free flame-proof highly anti-flush polyphenylacetylene composition and method of making the same

Abstract

The invention discloses a non-bittern flame-proof high-impact polystyrene composition and preparing method in resin flame-proof modified domain, which is characterized by the following: comprising 100 wt high-impact polystyrene resin, 35-80 wt non-bittern combustion inhibitor and 10-30 wt forming carbon agent; setting the non-bitter flame-proof as poly ammonium phosphate pentaerythritol ester; setting the forming carbon agent as poly 2, 6-dimethyl-1, 4 phenyl ether or mixture with mass ratio at 3:1-6:1 poly 2, 6-dimethyl-1, 4 phenyl ester and nanometer caoline; comprising flexibilizer with 10-40 wt; choosing the flexibilizer from at least one of grafts of styrene-butene-styrene terpolymer and maleic anhydride, grafts of octane-ethene binary multipolymer and maleic anhydride and silicon rubber; mixing each component; melting; blending; getting the product. This invention possesses high flame-proof efficiency, which does not generate droplet.

Description

Technical field: [0001] The invention relates to a flame-retardant polystyrene composition, and furthermore, relates to a flame-retardant high-impact polystyrene composition modified by a halogen-free flame retardant and a preparation method thereof. Background technique: [0002] At present, most of the halogen-free flame retardants of polymers are mainly based on adding inorganic flame retardants and intumescent flame retardants. The flame retardants used for polystyrene at home and abroad mainly include aluminum hydroxide, magnesium hydroxide, red phosphorus and phosphorus- Nitrogen intumescent flame retardants, etc. [0003] Inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide are added in large amounts, and because of their high polarity, they have poor compatibility with materials and seriously damage the mechanical properties of materials. [0004] Although red phosphorus has high flame retardant efficiency, it is not a good choice for haloge...

AI Technical Summary

Problems solved by technology

[0003] Inorganic flame retardants such as aluminum hydroxide, magnesium hydroxide, etc. are added in large amounts, and because of their high polarity, their compatibility with materials is not good, and the mechanical properties of materials are seriously damaged.

[0004] Although the flame retardant efficiency of red phosphorus is high, it is not a good choice for halogen-free flame retardant polystyrene because of color and compatibility issues.

[0005] Phosphorus-nitrogen intumescent flame retardants are generally composed of ammonium polyphosphate, pentaerythritol and melamine. Compared with inorganic flame retardants, phosphorus-nitrogen flame retardants have better compatibility with materials. The problem is that pentaerythritol is easy to Precipitation, leading to failure of flame retardant

[0006] Therefore, the addition of flame retardants often brings serious losses to the mechanical properties of polystyrene, which greatly limits the application range of high-impact styrene.

At present, the toughening of polystyrene at home and abroad is mostly achieved by adding a toughening agent to obtain higher impact properties, but it will affect the tensile properties of the material.