Yini iGeneral Izakhiwo ze-Polyethylene Resin
General Izakhiwo ze-Polyethylene Resin
I-polyethylene resin iyimpushana emhlophe engenalo ubuthi, engenaphunga noma imbudumbudu, emhlophe njenge-milky, enomuzwa ofana nengcina, nokumunca amanzi aphansi, ngaphansi kuka-0.01%. Ifilimu ye-polyethylene isobala futhi iyancipha ngokukhula kwecrystallinity. Ifilimu ye-polyethylene inokungena kwamanzi okuphansi kodwa amandla omoya aphezulu, angafaneleki ukupakishwa okugcinwa kabusha kodwa afanele ukupakishwa kobufakazi bomswakama. Iyasha, inenkomba ye-oxygen engu-17.4, intuthu ephansi uma ivutha, inani elincane lamaconsi ancibilikisiwe, eliphuzi elangabini noluhlaza okwesibhakabhaka phansi, kanye nephunga likapharafini. I-polyethylene inokumelana namanzi okungcono. Ingaphezulu lomkhiqizo alilona i-polar, kunzima ukubopha nokuphrinta, futhi liye lathuthukiswa ukwelashwa kwendawo. Amaketanga amaningi anamagatsha anokumelana okungalungile nokuwohloka kwezithombe kanye ne-oxidation.
Isisindo sayo samangqamuzana siphakathi kuka-10,000 kuya ku-100,000. Uma isisindo samangqamuzana sidlula i-100,000, i-polyethylene enesisindo esiphezulu esiphezulu. Ukuphakama kwesisindo samangqamuzana, kuba ngcono izici zayo ezingokomzimba nezomshini, futhi kusondele ezingeni elidingekayo lezinto zobunjiniyela. Kodwa lapho isisindo samangqamuzana siphezulu, kuba nzima nakakhulu ukucubungula. I-polyethylene inephuzu lokuncibilika lika-100-130°C futhi inokumelana okuhle kakhulu nezinga lokushisa eliphansi. Isengakwazi ukugcina izakhiwo ezinhle zomshini ku -60 °C, kodwa izinga lokushisa lokusebenza lingu-80~110 °C.
Ayincibiliki kunoma iyiphi i-solvent eyaziwayo ekamelweni lokushisa, futhi ingancibilika ngenani elincane ku-toluene, i-amyl acetate, i-trichlorethylene nezinye izincibilikisi ezingaphezu kuka-70°C.
Izakhiwo zikagesi ze-Polyethylene Resin
Ngenxa yokuthi i-polyethylene ayiyona i-polar, inendawo enhle kakhulu kagesi enokulahlekelwa okuphansi kwe-dielectric namandla aphezulu e-dielectric. Ingasetshenziswa njengezinto zokuvikela imvamisa yokuguquguquka, ipulasitiki engamelana ne-corona, kanye nezinto ezifakwa ku-voltage eziphezulu.
Izakhiwo ezishisayo
Ukumelana nokushisa kwe-polyethylene akuphakeme, futhi kuthuthukisa ngokunyuka kwesisindo samangqamuzana esihlobene kanye ne-crystallinity. Good low lokushisa ukumelana, izinga lokushisa brittle can generally ukufinyelela ngaphansi -50 ℃; futhi ngokwanda kwesisindo samangqamuzana esihlobene, esiphansi singafinyelela -140 ℃. I-linear extension coefficient ye-polyethylene inkulu, ifika ku-(20～24)×10-5/K. High conductivity ezishisayo.