PE ntawv : High Ceev Polyethylene, PE ntawv yog ib tug high degree ntawm crystallinity, uas tsis yog-polar thermoplastic cob. Cov tsos ntawm tus thawj HDPE yog ntais dawb, nyob rau hauv ib tug me ntsis ntoo khaub lig-section yog ib tug tej yam degree ntawm translucent.
Muaj zoo heev kuj rau feem ntau ntawm cov yam ntxwv ntawm lub neej thiab muaj tshuaj. Tej yam hom tshuaj muaj peev xwm tsim tshuaj xeb: piv txwv li, corrosive oxidants (concentrated nitric acid), uas muaj ntxhiab hydrocarbons (xylene) thiab halogenated hydrocarbons (carbon tetrachloride). Lub polymer yog uas tsis yog-hygroscopic thiab muaj zoo dej vapor kuj thiab yuav siv tau rau lub ntim daim ntaub ntawv. HDPE muaj zoo hluav taws xob khoom, tshwj xeeb tshaj yog dielectric dielectric zog, ua rau nws heev haum rau hlau thiab cable. Medium rau siab molecular yuag qib muaj zoo heev tej yam kuj, ntawm chav tsev kub txawm nyob rau hauv lub -40F tsawg kub yog li ntawd. Lub cim thaj chaw ntawm lub ntau yam qib ntawm HDPE yog cov uas tsim nyog ua ke ntawm plaub yooj yim ntau yam: ceev, molecular luj, molecular yuag faib thiab additives.
Txawv catalysts yog siv los tsim kev cai tshwj xeeb polymers uas muab rau ua txawv qib ntawm HDPE qib; tau qhov zoo tshaj plaws tshuav nyiaj li cas nyob rau hauv kev kawm ntawv. Muaj zoo tshuaj stability, yuav tiv taus feem ntau ntawm cov acid, alkali, organic tshuaj thiab dej kub yaig, zoo hluav taws xob rwb thaiv tsev.
PE ntawv ntxhiab , uas tsis yog-tshuaj lom, xav tias zoo li ciab, nrog zoo heev uas tsis muaj kub (yam tsawg kawg nkaus kub txog li -70 ~ -100 ℃), zoo tshuaj stability rau PE board
Resistant mus rau lub feem ntau ntawm acid thiab alkali yaig (intolerance ntawm acid nrog acid), hauv ib chav tsev kub insoluble nyob rau hauv kev hnyav, dej haum, zoo heev hluav taws xob rwb thaiv tsev, tsis tshua muaj ceev, zoo toughness (tib yam siv rau cov uas tsis muaj kub tej yam kev mob), zoo tensile; Hluav taws xob thiab dielectric rwb thaiv tsev yog zoo, tsis tshua muaj dej haum, uas tsis muaj pa dej permeability, tshuaj stability, tensile, uas tsis yog-tshuaj lom phem.
Txawm li cas los, PE ntawv no rhiab heev rau tej kev nyuaj siab (tshuaj thiab txhua yam kev txiav txim), cov neeg pluag thaum tshav kub kub laus kuj.