Qhov txawv ntawm PS thiab HIPS yog dab tsi?
PS yog polystyrene, thiab lub duav yog hloov kho polystyrene, uas yog, lub duav yog ib hom ps yas hloov los ntawm ps khoom, uas kuj yog ps khoom nyob rau hauv cov xwm, tab sis hloov nyob rau hauv tej yam kuj. Kev cuam tshuam-resistant polystyrene.Lub npe zoo: High Impact Polystyrene. Kev Ua Haujlwm: Impact-resistant polystyrene (HIPS), Impact-resistant polystyrene yog tsim los ntawm kev ntxiv cov roj hmab polybutyl rau polystyrene Txoj kev los tsim cov khoom tiv thaiv polystyrene. Cov khoom no polystyrene ntxiv micron-loj roj hmab hais thiab txuas cov polystyrene thiab roj hmab hais ua ke los ntawm grafting.
Thaum muaj kev cuam tshuam, qhov kev ntxhov siab ntawm qhov tawg tawm ntawm qhov taw qhia yog tso tawm los ntawm cov khoom siv roj hmab uas zoo sib xws. Yog li ntawd, kev nthuav tawm tawg yog hindered, thiab kev cuam tshuam kev cuam tshuam tau zoo tuaj.
Polystyrene yog cov yas nkig nrog ntau yam kev siv. Lub plhaub ntawm lub computer koj siv tam sim no yog polystyrene. Pob tshab yas khob dej thiab yas foamed rau ntim kuj yog ua los ntawm polystyrene.
Polystyrene yog ib hom polyolefin, uas yog tsim los ntawm styrene los ntawm dawb radical polymerization.
Ib hom tshiab ntawm polystyrene tuaj yeem tau txais los ntawm metallocene-catalyzed polymerization, uas yog syndiotactic. Cov benzene rings ntawm syndiotactic polystyrene hloov pauv mus rau ob sab ntawm cov saw tseem ceeb, thaum lub nplhaib benzene ntawm cov polystyrene zoo tib yam yog randomly txuas rau ob sab ntawm cov saw tseem ceeb.
Syndiotactic yog crystalline polymer nrog lub melting point ntawm 270 degree C.
Hauv cov txheej txheem styrene polymerization, polybutadiene tau ntxiv los ua styrene graft polymerize ntawm polybutadiene cov saw tseem ceeb.
Polystyrene thiab polybutadiene tsis sib haum, yog li cov styrene thiab butadiene ntu sib sau ua ke sib cais, ua rau theem sib cais.
Cov cheeb tsam polybutadiene no tuaj yeem nqus lub zog cuam tshuam, yog li txhim kho qhov cuam tshuam lub zog ntawm polystyrene.
HIPS engineering yas, milky dawb opaque hais. Qhov ceev yog 1.05g / cm ^ 3, melting kub yog 150 ~ 180 degree, thermal decomposition kub yog 300 degree, soluble nyob rau hauv aromatic hydrocarbons, chlorinated hydrocarbons, ketones (tshwj tsis yog ketones) thiab esters Resistant rau ntau ntxhia roj, organic acids, alkalis, ntsev, qis cawv thiab lawv cov tshuaj aqueous, tsis resistant rau boiling dej. HIPS yog ib qho ntawm cov khoom siv hluav taws xob pheej yig tshaj plaws. Piv nrog ABS, PC / ABS, PC, gloss ntawm cov khoom tsis zoo. Tag nrho kev ua tau zoo kuj tseem tsis zoo. HIPS yog hloov kho los ntawm PS ntxiv rau butadiene, vim tias qhov cuam tshuam lub zog ntawm PS yog qhov tsawg heev, cov khoom tsim yog nkig heev, tab sis lub toughness ntawm butadiene yog zoo heev, ntxiv butadiene tom qab ntawd, qhov cuam tshuam kev ua tau zoo ntawm PS tuaj yeem nce los ntawm 2 ~ 3x ua. Txawm hais tias qhov cuam tshuam lub zog ntawm HIPS yog ntau dua li qhov cuam tshuam lub zog ntawm PS, nws qhov kev ua tau zoo tag nrho tseem tsis zoo li ABS, PC / ABS, thiab lwm yam. Qhov cuam tshuam kev ua tau zoo ntawm HIPS yog piv rau engineering plastics tsawg.