Blog

PS is polystyrene, and hips is modified polystyrene, that is, hips is a kind of ps plastic modified by ps material, which is also ps material in nature, but modified in impact resistance. Impact-resistant polystyrene, Positive name: High Impact Polystyrene. Performance: Impact-resistant polystyrene (HIPS), Impact-resistant polystyrene is made by adding polybutyl rubber particles to polystyrene Method to produce an impact resistant polystyrene product. This polystyrene product adds micron-sized rubber particles and connects the polystyrene and rubber particles together by grafting.

冲击 When subjected to an impact, the stress at the crack propagation tip is released by the relatively soft rubber particles. Therefore, crack propagation is hindered, and impact resistance is improved.

Polystyrene is a brittle plastic with a wide range of uses. The shell of the computer you are using now is polystyrene. Transparent plastic water cups and foamed plastic for packaging are also made of polystyrene.

Polystyrene is a kind of polyolefin, which is made by styrene through free radical polymerization.

A new type of polystyrene can be obtained through metallocene-catalyzed polymerization, namely syndiotactic. The benzene rings on syndiotactic polystyrene are alternately connected to both sides of the main chain, while the benzene rings of ordinary polystyrene are randomly connected to both sides of the main chain.

Syndiotactic is a crystalline polymer with a melting point of 270 ° C.

In the styrene polymerization system, polybutadiene is added to make styrene graft polymerize on the polybutadiene main chain.

Polystyrene and polybutadiene are incompatible, so the styrene and butadiene segments aggregate separately, resulting in phase separation.

These polybutadiene phase regions can absorb impact energy, thereby improving the impact strength of polystyrene.

HIPS engineering plastic, milky white opaque particles. Density is 1.05g / cm ^ 3, melting temperature is 150 ~ 180 ℃, thermal decomposition temperature is 300 ℃, soluble in aromatic hydrocarbons, chlorinated hydrocarbons, ketones (except ketones) and esters Resistant to many mineral oils, organic acids, alkalis, salts, lower alcohols and their aqueous solutions, not resistant to boiling water. HIPS is one of the cheapest engineering plastics. Compared with ABS, PC / ABS, PC, the gloss of the material is poor. The overall performance is also relatively poor. HIPS is modified by PS plus butadiene, because the impact strength of PS is very low, the product made is very brittle, but the toughness of butadiene is very good, adding butadiene After that, the impact performance of PS can be increased by 2 ~ 3 times. Although the impact strength of HIPS is much higher than the impact strength of PS, its overall performance is still not as good as ABS, PC / ABS, etc. The impact performance of HIPS is comparative in engineering plastics low