Dab tsi yog High-density Polyethylene
Jul 01, 2023| Dab tsi yog High-density Polyethylene?
High-density polyethylene (HDPE), uas yog cov hmoov dawb los yog granular khoom. Non-toxic, tasteless, crystallinity ntawm 80% ~ 90 feem pua, softening point ntawm 125 ~ 135 degree, siv kub txog li 100 degree; Hardness, tensile zog thiab creep yog superior rau LDPE; Zoo hnav tsis kam, hluav taws xob rwb thaiv tsev, toughness thiab txias tsis kam; Zoo tshuaj stability, insoluble nyob rau hauv tej organic hnyav nyob rau hauv chav tsev kub tej yam kev mob, resistant rau acid, alkali thiab ntau yam ntsev; Cov zaj duab xis muaj me ntsis permeability rau dej vapor thiab huab cua thiab tsis tshua muaj dej nqus; Kev laus tsis zoo, ib puag ncig kev ntxhov siab tawg tsis zoo li tsis tshua muaj polyethylene, tshwj xeeb tshaj yog thermal oxidation yuav txo nws cov kev ua tau zoo, yog li cov resin yuav tsum ntxiv antioxidants thiab ultraviolet absorbers los txhim kho qhov tsis muaj peev xwm. High-density polyethylene zaj duab xis muaj qhov kub thiab txias deflection kub nyob rau hauv kev quab yuam, thiab yuav tsum tau them nyiaj rau daim ntawv thov.
Lub xyoo pua no tau pom ib qho kev hloov pauv hloov pauv hauv cov raj xa dej, uas yog, "yas tsis siv hlau". Nrog rau kev nce qib sai ntawm cov khoom siv polymer science thiab thev naus laus zis, kev sib sib zog nqus ntawm kev txhim kho thiab kev siv cov kav dej yas, thiab kev txhim kho txuas ntxiv ntawm cov tshuab tsim khoom, cov kav dej yas vividly qhia lawv cov kev ua tau zoo. Niaj hnub no, cov kav dej yas tsis tau yuam kev rau "kev hloov pheej yig" rau cov kav hlau. Nyob rau hauv lub kiv puag ncig no, polyethylene pipelines yog nyiam thiab nce dazzling, dav siv nyob rau hauv kev xa roj, dej, dej tso tawm, ua liaj ua teb irrigation, mine nplua particle khoom thauj, nrog rau cov roj teb, tshuaj lom neeg kev lag luam thiab post thiab telecommunications thiab lwm yam liaj teb, tshwj xeeb tshaj yog nyob rau hauv lub teb chaws. nyob rau hauv cov pa kis tau tus mob tau dav siv.
HDPE yog cov thermoplastic polyolefin ua los ntawm ethylene copolymerization. Txawm hais tias HDPE tau tshaj tawm hauv xyoo 1956, cov yas tseem tsis tau mus txog qib kev paub tab. Cov khoom siv thoob ntiaj teb no tseem niaj hnub tsim nws cov kev siv tshiab thiab kev lag luam.