Polyethylene e tlase-tlase (LDPE) ke thermoplastic e entsoeng ka monomer ethylene.E ne e le sehlopha sa pele sa polyethylene, e hlahisitsoeng ka 1933 ke Imperial Chemical Industries (ICI) e sebelisa ts'ebetso ea khatello e phahameng ka polymerization ea mahala.Ho etsoa ha eona ho sebelisa mokhoa o tšoanang kajeno.EPA e hakanya hore 5.7% ea LDPE (nomoro ea 4) e sebelisoa hape.Leha ho na le tlholisano e tsoang ho li-polymers tsa sejoale-joale, LDPE e ntse e tsoela pele ho ba sehlopha sa bohlokoa sa polasetiki.
PTFEke fluorocarbon solid, kaha ke motsoako oa boima ba molek'hule o nang le carbon le fluorine ka ho feletseng.PTFE ha e na metsi kapa lintho tse nang le metsi tse kolobileng PTFE, joalo ka ha li-fluorocarbon li bonts'a matla a pharalletseng a London ka lebaka la matla a phahameng a motlakase a fluorine.PTFE e na le e 'ngoe ea li-coefficients tse tlase tsa khohlano ea ntho efe kapa efe e tiileng.
Papiso ea LDPE le Polymer PTFE/FEP Maemo a Thepa
Lisebelisoa tsa Material
Polyethylene ea boleng bo tlase (LDPE):
LDPE e sebelisoa haholo ho etsa lijana tse fapaneng, libotlolo tse tsamaisang, libotlolo tsa ho hlatsoa, li-tubing, mekotla ea polasetiki bakeng sa likarolo tsa komporo, le lisebelisoa tse fapaneng tsa laboratori tse bōpiloeng.Tšebeliso ea eona e tloaelehileng ke ka mekotleng ea polasetiki.Lihlahisoa tse ling tse entsoeng ka eona li kenyelletsa:
- * Literene le lijana tsa morero ka kakaretso
- * Libaka tsa mosebetsi tse sa jeng
- * Likarolo tse hlokang ho cheseha le ho sebetsa ka mochini
- * Likarolo tse hlokang ho tenyetseha, tseo e sebeletsang hantle haholo
- * Likarolo tse bonolo haholo le tse tenyetsehang joalo ka li-snap-on lids
- * Mehele e tšeletseng ea pakete
- * Mabokose a lero le lebese a entsoe ka boto ea ho paka ka metsi, laminate ea pampiri le LDPE (e le lesela le sa keneleng metsi ka hare le ka ntle), 'me hangata le lera la foil ea aluminium (ka hona e fetoha sephutheloana sa aseptic).
- * Ho paka lisebelisoa tsa komporo, joalo ka li-hard disk drive, likarete tsa skrineng, le li-optical disc drives
- * Li-slide tsa lebala la lipapali
- * Liaparo tsa polasetiki
POLYMER PTFE/FEP:Litharollo tsa li-cabling; Li-bearings tse sa kenngoeng; O-rings; Litiiso; Li-Capacitor; Ho etsa li-semiconductor; Likarolo tse phahameng tsa mocheso oa motlakase; Li-Gaskets; Likarolo tsa Valve.
Thepa ea Lintho:
Polyethylene ea boleng bo tlase (LDPE):a;LDPE e hlalosoa ka mefuta e mengata ea boima ba 0.910-0.940 g/cm3.Ha e sebetse ka mocheso oa kamore, ntle le ka li-oxidizing agents tse matla, 'me li-solvents tse ling li baka ho ruruha.E khona ho mamella mocheso oa 80 °C ka ho tsoelang pele le 95 °C ka nako e khutšoanyane.E entsoe ka mefuta e feto-fetohang kapa ea opaque, e fetoha habonolo ebile e thata.
b;LDPE e na le makala a mangata (ka hoo e ka bang 2% ea liathomo tsa carbon) ho feta HDPE, kahoo matla a eona a intermolecular (instantaneous-dipole induced-dipole attraction) a fokola, matla a eona a thata a tlaase, 'me ho tiea ha eona ho phahame.Hape, hobane limolek'hule tsa eona ha li thata haholo ebile ha li na kristale ka lebaka la makala a mahlakoreng, boima ba eona bo tlase.
c;Khanyetso ea lik'hemik'hale: 1, khanyetso e ntle (ha ho na tlhaselo / ha ho na karabelo ea lik'hemik'hale) ho hlapolla le ho tsepamisa maikutlo ho li-acids, joala, metheo le li-esters; Ho hanyetsa ho lekanyelitsoeng (tlhaselo e itekanetseng / karabelo ea bohlokoa ea lik'hemik'hale, e loketseng ts'ebeliso ea nako e khuts'oane feela) ho li-hydrocarbon tsa aliphatic le tse nkhang hamonate, oli ea liminerale le li-oxidizing agents;
POLYMER PTFE/FEP:Thepa e ntle haholo ea dielectric; ho hloka botsitso ho lik'hemik'hale tse ngata; mocheso o phahameng le khanyetso ea lik'hemik'hale; khohlano e tlase haholo; khanyetso e ntle ea mahlaseli; ho monya mongobo oa Zero; ha ho na kutlo ho maqhubu a matla; machinability.
Nako ea poso: Nov-10-2019