タイトルまたは説明

  Impact-resistant polystyrene (HIPS) impact-resistant polystyrene is the production of an impact resistant polystyrene products by adding polyethylene butyl rubber in polystyrene particles approach.This polystyrene product will be added to the rubber particles of the micron level, and polystyrene and the rubber particles are connected together by Zhijie approach.The impact tip stress crack propagation is relatively soft rubber particles released.Therefore, crack growth is hindered, and the impact resistance has been improved.Polystyrene is a versatile brittle plastic.The casing of the computer you are using now is polystyrene.Transparent plastic cups, foam packaging is made of polystyrene.Polystyrene is a polyolefin, styrene by radical polymerization.Metallocene-catalyzed polymerization to obtain a new type of polystyrene, i.e. a syndiotactic polystyrene (syndiotactic).Syndiotactic polystyrene on the benzene ring are alternately connected on both sides of the main chain of the ordinary polystyrene benzene ring in the random connected on both sides of the main chain.Syndiotactic polystyrene (syndiotactic) is a crystalline polymer, the melting point to **0 ° C.Added polybutadiene, styrene graft polymerized in the main chain of polybutadiene in styrene polymerization system.Polystyrene and polybutadiene is incompatible, and so the segments of styrene and butadiene were gathered, resulting in phase separation.These polybutadiene phase region can absorb the impact energy, thereby improving the impact strength of polystyrene HIPS Engineering Plastics milky white opaque particles. Density of 1.*5g/cm ^ 3. Melting temperature of **0 to **0 ° C thermal decomposition temperature of **0 ° C.soluble hydrocarbons, chlorinated hydrocarbons, ketones and esters (except Chalcone) the ability of many mineral oils, organic acids, alkali, salt, lower alcohol and its aqueous solution, impatience boiling water. HIPS cheapest engineering plasticsone, and ABS, PC / ABS, PC compared with the gloss of the material is relatively poor, overall performance is the relative difference. HIPS by some PS plus butadiene modified from, because of the low impact strength of the PS,make the product is very brittle, while the toughness of the butadiene good impact properties of PS can be increased by 2 to 3 times, after adding butadiene Although the impact strength of the HIPS is much higher than the impact strength of PS, but its overallperformance is not as good as ABS, PC / ABS, HIPS impact performance engineering plastics is relatively low, therefore, we should pay attention to use regrind the impact properties of the test material.