Ingabe izindawo zokushisa okuphezulu zingadala amaphaneli eminyango ye-PC ukuthi akhiphe izinto eziyingozi?
Amaphaneli eminyango ye-PC asetshenziswa kakhulu endaweni yokugcina izinto yasendlini, izindawo zokusebenza zaselabhorethri, izindawo ezivalekile zemishini yezokwelapha, nezinye izimo ngenxa yokumelana nomthelela, ukubonakala okuhle kakhulu, kanye nezindawo zokuhlanza kalula. Njengoba inkathi yokushisa ephezulu isondela noma ezindaweni eziseduze nemithombo yokushisa, noma amaphaneli eminyango ye-PC azokhipha izinto eziyingozi sekuyinkinga eyinhloko kubasebenzisi. Eqinisweni, le nkinga idinga ukwahlulelwa ngokugcwele ngokusekelwe ezicini zokumelana nokushisa, ubungozi obungaba khona, kanye nekhwalithi yomkhiqizo wezinto ze-PC, futhi ayikwazi ukwenziwa jikelele.
Ngokombono wokumelana nokushisa kwezinto ze-PC, zinokuzinza okuqinile okushisayo kanye nobubanzi obucacile bokubekezelela ukushisa. Izinga lokushisa eliphephile lokusebenzisa isikhathi eside lamaphaneli eminyango ye-PC evamile ngu-120-130 ℃. Lapho izinga lokushisa lifinyelela ku-140-150 ℃, izinto ziyashintsha kancane kancane zisuka esimweni esiqinile ziye esimweni esithambile. Ukugqugquzela ukubola nokukhululwa kwezinto, izinga lokushisa lidinga ukufika ku-290 ℃ noma ngaphezulu. Lesi sici sisho ukuthi ezimweni zansuku zonke zokushisa okuphezulu, liphansi kakhulu kunokushisa kokubola kwezinto ze-PC, futhi ukwakheka kwamangqamuzana amaphaneli eminyango ye-PC kuhlala kuzinzile, okwenza kube nzima ukukhulula izinto eziyingozi.
Nokho, kusenezingozi ezimbili ezingaba khona ezihlobene namaphaneli eminyango ye-PC ezindaweni ezinezinga lokushisa eliphezulu, kodwa izinga lobungozi lingalawulwa ngokukhetha umkhiqizo kanye nezimo zokusebenzisa. Uhlobo lokuqala inkinga yokufuduka kwe-bisphenol A. Ezinye izinto ze-PC zingase zigcine amanani okulandelela e-bisphenol A phakathi nenqubo yokukhiqiza, futhi ukukhishwa kwezinto ezinjalo ekamelweni lokushisa kuphansi kakhulu, okuhlangabezana nezindinganiso zokuphepha. Nokho, ukunyuka kwezinga lokushisa kuzosheshisa izinga lokufuduka kwazo. Uma izinga lokushisa le-ambient lidlula u-80 ℃, ukukhishwa kwe-bisphenol A kuzokwenyuka kakhulu, futhi indawo yamanzi abilayo ku-100 ℃ izophinde inyuse leli zinga. Njengamanje, abakhiqizi abaningi emakethe bethule amaphaneli eminyango ye-PC ngaphandle kwe-bisphenol A, okuqhubeka nokunciphisa ubungozi obunjalo.
Uhlobo lwesibili lwengozi luhlobene nezithasiselo ezengezwe phakathi nenqubo yokukhiqiza. Ukuthuthukisa ukuqina kanye nekhono lokulwa nokuphuzi lamaphaneli eminyango ye-PC, inani elincane lezithako ezisizayo njengama-antioxidants kanye nama-toughening agents zengezwa ngesikhathi sokukhiqiza. Lezi zingxenye zizinzile emazingeni okushisa avamile, kodwa lapho izinga lokushisa elizungezile lisondela ekushiseni kwe-thermal deformation yezinto ze-PC, ama-ejenti asizayo ambalwa angase ashintshe amakhemikhali amancane futhi ngezikhathi ezithile akhiqize amanani amancane ezinto ezicasulayo. Kodwa-ke, izimo ezinjalo zingenzeka kuphela ezindaweni eziphakeme kakhulu zokushisa, futhi akuvamile ukuthi amazinga okushisa aqine kangaka afinyelelwe nsuku zonke ekhaya, ehhovisi, noma ezimweni ezijwayelekile zezimboni. Ngakho-ke, asikho isidingo sokukhathazeka ngokweqile ekusebenziseni okungokoqobo.
Ikhwalithi yomkhiqizo iyisici esibalulekile esinquma ukuphepha kwamaphaneli eminyango ye-PC ezindaweni ezinezinga lokushisa eliphezulu. Amaphaneli eminyango ye-PC esezingeni eliphezulu akhiqizwa kusetshenziswa izinto zokusetshenziswa ezintsha sha, ezilawula ngokuqinile inani elisele le-bisphenol A, futhi kwengezwe ama-agent asizayo athobela izindinganiso zomkhakha. Baphinde babhekana nokushisa nokuhlolwa kokuphepha; Kodwa-ke, amanye amaphaneli eminyango ye-PC esezingeni eliphansi enziwe ngezinto ezigaywe kabusha awagcini nje ukunciphisa ukumelana nokushisa, kodwa angase futhi andise ingozi yokukhishwa kwezinto eziyingozi emazingeni okushisa aphezulu ngenxa yokungcola kwezinto ezingavuthiwe noma izithasiselo ezingafanele. Ngaphezu kwalokho, izinga lokuguga lamaphaneli eminyango ye-PC lingathinta nokuphepha. Uma amaphaneli eminyango ebonisa ukuguga okuphawulekayo, ukuzinza kwesakhiwo samangqamuzana azokwehla, futhi amathuba okukhulula izinto ezindaweni zokushisa okuphezulu azokhula ngokufanayo.
Sekukonke, ukuthi amaphaneli eminyango ye-PC akhipha izinto eziyingozi yini endaweni enezinga lokushisa eliphezulu kuncike emiphumeleni ehlanganisiwe yokuqina kwezinga lokushisa, ubude besikhathi, kanye nekhwalithi yomkhiqizo. Ezimweni zokusetshenziswa kwansuku zonke, amaphaneli eminyango ye-PC afanelekayo angamelana namazinga okushisa avamile anengozi ephansi kakhulu yokukhishwa kwezidakamizwa eziyingozi; Kuphela ezimweni zokushisa eziphakeme ngokwedlulele eziseduze noma ezeqa izinga lokushisa lezinto ezishisayo zokuguga, noma lapho usebenzisa amaphaneli eminyango ye-PC engaphansi noma endala, lapho kufanele kuxwayiswe izingozi ezingaba khona. Abasebenzisi akudingeki bakhathazeke ngokweqile. Badinga kuphela ukukhetha amaphaneli eminyango ye-PC ahlangabezana nezindinganiso zokuphepha ngamashaneli asemthethweni, agweme ukuchayeka isikhathi eside emazingeni okushisa aphakeme ngokwedlulele angaphezu kuka-130 ℃, ukuze aqinisekise ukusetshenziswa okuphephile.