Izakhiwo
I-polyethylene enamandla kakhulu noma i-HDPE iyindleko ephansi, emhlophe qhwa, i-semi-translucent thermoplastic.Iyavumelana nezimo kodwa iqinile futhi inamandla kune-LDPE futhi inamandla omthelela omuhle nokumelana nokubhoboza okuphakeme.Njenge-LDPE, futhi inokumelana okuhle kwamakhemikhali, izakhiwo ezinhle zokukhulula, kanye nomhwamuko omuhle kodwa isithiyo esibi segesi kanye nezakhiwo zesimo sezulu.Okunye ukulinganiselwa noma okungalungile kufaka phakathi: ngaphansi kokuqhekeka kwengcindezi, okunzima ukubopha, ukuvutha, kanye nekhono lokushisa eliphansi.
Imvamisa, i-polyethylene enokuminyana okuphezulu iqondile kakhulu futhi ngenxa yalokho ikristale kakhulu kune-LDPE.Ukucwebezela okuphezulu kuholela ekushiseni okuphezulu kwesevisi okufika ku-130°C futhi kuphumela ekumelaneni nokunyakaza okungcono.Izinga lokushisa eliphansi lesevisi licishe libe ngu-40°C.
I-HDPE ijwayele ukuba lukhuni kunamanye amafilimu e-polyethylene, okuyisici esibalulekile samaphakheji adinga ukugcina isimo sawo.I-HDPE kulula ukuyicubungula futhi ingaxutshwa namanye ama-polymer kanye/noma izithasiselo, njengezigcwalisi (eziphathwe ngobuso), enye i-polyolefin (i-LDPE, i-LLDPE), kanye ne-pigments ukuze kuguqulwe izici zayo eziyisisekelo.
Izinhlelo zokusebenza
Ifilimu ye-HDPE ivamise ukusetshenziswa ezinhlelweni eziningi ezifanayo njenge-LDPE ne-LLDPE futhi kwezinye izimo ihlanganiswa ne-LDPE ukuze kulungiswe izici zayo.I-HDPE ifaneleka kahle izinhlelo zokusebenza lapho kudingeka khona amandla amakhulu okuqina namandla okucindezela kanye/noma lapho ukuqina nokuqina okuphakeme kudingeka.Njenge-LDPE, i-HDPE inamandla amakhulu okuthonya kanye nokumelana nokugqwala.
Ngenxa yephunga eliphansi, ukumelana namakhemikhali aphezulu kanye nokungabi namandla, amamaki amaningi e-PE afanele ukupakisha izicelo ngaphansi kwemithetho ye-FDA.Ngenxa yezinga eliphezulu lokubilisa, amamaki amaningi angabulawa inzalo emanzini abilayo.
Izicelo zefilimu ze-HDPE ezijwayelekile zifaka izikhwama;amalayini;ukupakisha ukudla nokungadli;amafilimu ezolimo nawokwakha.
Eminyakeni yamuva nje, i-HDPE izuze isabelo semakethe ikakhulukazi ngenxa yezindawo zayo zokukala phansi, ezivumela amafilimu namaphakheji amancane (okungukuthi kusetshenziswa impahla encane) eletha ukusebenza okulinganayo.
Amafilimu e-HDPE ngokuvamile angu-0.0005" kuya ku-0.030" awugqinsi.Atholakala ngemibala ekhanyayo noma e-opaque.I-HDPE iyatholakala futhi nge-anti-static, i-flame retardant, nezithasiselo ze-ultraviolet.
Isikhathi sokuthumela: Apr-07-2022