Polyethylene terephthalate Tsarin sinadarai shine -OCH2-CH2OCOC6H4CO- Sunan Ingilishi: polyethylene terephthalate, wanda aka taƙaita shi da PET, wani babban polymer ne, wanda aka samo daga amsawar bushewar ethylene terephthalate. Ana samun Ethylene terephthalate ta hanyar amsawar esterification na terephthalic acid da ethylene glycol. PET wani farin madara ne ko rawaya mai haske, polymer mai lu'ulu'u mai haske da santsi. Yana da kyawawan halaye na zahiri da na inji a cikin kewayon zafin jiki mai faɗi. Zafin amfani na dogon lokaci zai iya kaiwa 120°C. Rufin lantarki yana da kyau. Ko da a yanayin zafi mai yawa da mita mai yawa, halayen wutar lantarki har yanzu suna da kyau, amma juriyar corona ba ta da kyau. Juriyar rarrafe, juriyar gajiya, juriyar gogayya, da kwanciyar hankali duk suna da kyau sosai.
fa'ida
1, yana da kyawawan halayen injiniya, ƙarfin tasirin ya ninka na sauran fina-finai sau 3-5, kuma juriyar naɗewa tana da kyau.
2, mai jure wa mai, mai, acid mai narkewa, alkaline mai narkewa, da yawancin abubuwan narkewa.
3, yana da juriya mai kyau ga zafi mai yawa da kuma zafi mai ƙasa. Ana iya amfani da shi na dogon lokaci a cikin kewayon zafin jiki na 120℃, kuma yana iya jure wa zafin jiki mai yawa na 150℃ da kuma zafin jiki mai ƙasa na -70℃ a cikin ɗan gajeren lokaci, kuma halayen injina na zafi mai yawa da zafi mai ƙasa ba su da tasiri sosai.
4, iskar gas da tururin ruwa ba su da ƙarfi, wato, yana da kyakkyawan juriya ga iskar gas, ruwa, mai da ƙamshi.
5, babban haske, zai iya toshe hasken ultraviolet, mai sheƙi mai kyau.
6, ba mai guba ba, mara ɗanɗano, tsafta da aminci, ana iya amfani da shi kai tsaye don shirya abinci.
PET wani nau'in polymer ne mai launin madara fari ko rawaya mai haske mai haske wanda ke da santsi da haske. Kyakkyawan juriya ga rarrafe, juriya ga gajiya, juriya ga gogayya da kwanciyar hankali, ƙarancin gogewa da babban tauri, tare da mafi girman tauri tsakanin kayan thermoplastic: kyakkyawan kariya daga lantarki, tasirin zafi mai ƙarancin zafi, amma rashin juriya ga corona. Zafin jiki, juriya ga yanayi, kyakkyawan kwanciyar hankali na juriya ga sinadarai, ƙarancin sha ruwa, juriya ga acid mai rauni da abubuwan narkewa na halitta, amma ba a nutsar da su cikin ruwan zafi da alkali ba. PET resin yana da zafin canzawar gilashi mai yawa, saurin lu'ulu'u a hankali, tsawon lokacin lu'ulu'u, tsawon lokacin lu'ulu'u, babban raguwar lu'ulu'u, rashin kwanciyar hankali na lu'ulu'u, da ƙarancin juriya ga zafi. Ta hanyar inganta wakilin nucleating, wakilin lu'ulu'u da ƙarfafa zare na gilashi, PET yana da halaye masu zuwa ban da halayen PBT:
1, zafin murdiya da zafin amfani na dogon lokaci shine mafi girma a cikin kayan aikin thermoplastic na gabaɗaya.
2, saboda tsananin juriyar zafi, ana nutsar da PET mai ƙarfi a cikin ruwan solder a zafin 250°C na tsawon daƙiƙa 10, kuma kusan ba ya canza launi. Ya dace musamman don shirya sassan lantarki da na lantarki da aka solder.
3, ƙarfin lanƙwasawa shine 200Mpa, modulus mai laushi shine 4000Mpa, juriyar rarrafe da gajiya suma suna da kyau sosai, taurin saman yana da yawa, kuma halayen injiniya suna kama da filastik mai zafi.
4, tunda ethylene glycol da ake amfani da shi wajen samar da PET kusan rabin farashin butylene glycol da ake amfani da shi wajen samarwa ne, PET resin da PET mai ƙarfi sune mafi ƙarancin farashi tsakanin robobi na injiniya kuma suna da farashi mai tsada.