HIPS的蠕变行为强烈依赖于平均分子量(Mw)。弯曲强度为29.4~50MPa,冲击强度0.09~0.16N/M,维卡软化点84~100℃,熔体指数为2~9g/10min。HIPS部件的耐热性依赖于它们的形状、生产条件、热源类型和加热持续时间,也受HIPS级别的影响。
当暴露在水、碱和稀的无机酸中时,HIPS的性质不受影响。它可被有些有机溶剂溶胀,被一些溶解,这是由连续相和溶剂相之间的溶解参数的差异决定的。当暴露在氯代烃和芳香烃中时,HIPS特别容易被破坏。 [4]
抗冲击原因
耐冲击性聚苯乙烯是通过在聚苯乙烯中添加聚丁二烯橡胶颗粒的办法生产的一种抗冲击的聚苯乙烯产品。这种聚苯乙烯产品会添加微米级橡胶颗粒并通过枝接的办法把聚苯乙烯和橡胶颗粒连接在一起。当受到冲击时,裂纹扩展的应力会被相对柔软的橡胶颗粒释放掉。裂纹的扩展受到阻碍,抗冲击性得到了提高。
用途
由于制造方便、成本低,HIPS在许多用具和工业上广泛使用。主要的工业和市场包括包装、一次性用品、用具和消费电器、玩具和娱乐用品、建筑产品和装饰品。HIPS大的单项应用是包装,尤其是在食品行业中的包装,全世界的消费超过30%。
Tus cwj pwm nkag ntawm HIPSmuaj zog nyob ntawm qhov nruab nrab molecular phaus (Mw). Qhovkhoov lub zog yog 29.4 ~ 50 MPa, qhov cuam tshuam lub zog yog 0.09~ 0.16N / M, Vicat muag taw tes yog 84 ~ 100 ℃, thiab cov ntsiablus yaj yog 2 ~ 9g / 10min. Lub tshav kub tsis kam ntawm HIPSCheebtsam nyob ntawm lawv cov duab, cov khoom tsim tawm, hom khoomsiv cua sov, thiab lub sijhawm ua cua sov, nrog rau qibHIPS.
Thaum kis tau dej, alkali,thiab dilute inorganic acids, cov yam ntxwv ntawm HIPS tsis cuamtshuam. Nws tuaj yeem o los ntawm qee cov kuab tshuaj organic thiabyaj los ntawm lwm tus, uas yog txiav txim siab los ntawm qhov sibtxawv hauv kev daws teeb meem ntawm cov theem txuas ntxiv thiab covkuab tshuaj theem. HIPS tshwj xeeb tshaj yog muaj kev puas tsuajthaum raug cov tshuaj chlorinated thiab muaj ntxhiab hydrocarbons.[4]
Cuam tshuam tsis kam vim licas
Qhov cuam tshuam tiv thaivpolystyrene yog ib hom kev cuam tshuam tiv thaiv polystyrene khoomtsim los ntawm kev ntxiv polybutadiene roj hmab hais raupolystyrene. Cov khoom lag luam polystyrene no yuav ntxiv micronqhov loj me ntawm cov roj hmab thiab txuas lawv ua ke los ntawm kevsib ceg. Thaum raug rau kev cuam tshuam, qhov kev ntxhov siab ntawmkev tawg tawm yog tso tawm los ntawm cov roj hmab me me. Yog lintawd, kev tshaj tawm ntawm cov kab nrib pleb yog qhov cuam tshuamthiab qhov cuam tshuam tiv thaiv tau zoo dua.
lub hom phiaj
Vim tias nws cov khoom lag luamyooj yim thiab tus nqi qis, HIPS tau siv dav hauv ntau yam khoomsiv thiab kev lag luam. Cov kev lag luam tseem ceeb thiab kev ualag luam suav nrog kev ntim khoom, cov khoom siv pov tseg, covkhoom siv thiab cov neeg siv khoom, cov khoom ua si thiab cov khoomlom ze, cov khoom tsim kho thiab kho kom zoo nkauj. Daim ntawv thovloj ntawm HIPS yog ntim, tshwj xeeb tshaj yog nyob rau hauv kev lagluam khoom noj khoom haus, qhov twg kev noj haus thoob ntiaj tebtshaj 30.