Cov khoom
High density polyethylene los yog HDPE yog tus nqi qis, milky dawb, semi-translucent thermoplastic.Nws yog qhov hloov tau yooj yim tab sis nruj dua thiab muaj zog dua li LDPE thiab muaj kev cuam tshuam zoo zog thiab ua haujlwm zoo dua.Zoo li LDPE, nws kuj muaj cov tshuaj tiv thaiv zoo, cov khoom tso tawm tau zoo, thiab cov vapor zoo tab sis cov roj tsis zoo thiab cov huab cua tsis zoo.Lwm qhov kev txwv lossis qhov tsis zoo suav nrog: raug kev ntxhov siab tawg, nyuaj rau kev sib txuas, nplaim taws, thiab tsis muaj peev xwm kub.
Feem ntau, high-density polyethylene yog linear ntau thiab yog li crystalline ntau dua li LDPE.Qhov siab dua crystallinity ua rau qhov siab tshaj qhov kev pabcuam kub txog li 130 ° C thiab ua rau muaj kev nkag siab zoo dua.Qhov ntsuas kub qis dua yog li -40 ° C.
HDPE nyhav dua li lwm cov yeeb yaj kiab polyethylene, uas yog ib qho tseem ceeb rau cov pob khoom uas yuav tsum tau tswj lawv cov duab.HDPE yog ib qho yooj yim rau cov txheej txheem thiab tuaj yeem sib xyaw nrog lwm cov khoom siv polymers thiab / lossis cov khoom siv ntxiv, xws li (nto kho) cov khoom ntim, lwm yam polyolefin (LDPE, LLDPE), thiab cov xim los hloov nws cov yam ntxwv.
Daim ntawv thov
HDPE zaj duab xis feem ntau yog siv rau hauv ntau daim ntawv thov tib yam li LDPE thiab LLDPE thiab qee zaum nws tau sib xyaw nrog LDPE los hloov kho nws cov khoom.HDPE yog qhov zoo rau cov ntawv thov uas xav tau lub zog tensile thiab compression ntau dua thiab / lossis thaum xav tau kev nruj dua thiab rigidity.Zoo li LDPE, HDPE muaj qhov cuam tshuam zoo zog thiab corrosion kuj.
Vim tsis muaj ntxhiab tsw, muaj tshuaj lom neeg tsis zoo thiab tsis muaj zog, ntau qib PE yog tsim rau cov ntawv ntim khoom raws li FDA cov cai.Vim muaj qhov kub kub kub, ntau qib tuaj yeem ua kom tsis muaj menyuam hauv cov dej kub npau npau.
Cov ntawv thov HDPE zaj duab xis xws li hnab;cov ntaub;ntim khoom noj thiab tsis khoom noj;kev ua liaj ua teb thiab kev tsim ua yeeb yaj kiab.
Nyob rau hauv xyoo tas los no, HDPE tau txais kev lag luam feem ntau vim nws cov khoom qis qis, uas tso cai rau cov yeeb yaj kiab nyias thiab ntim khoom (piv txwv li cov khoom siv tsawg) uas ua rau muaj kev sib npaug.
HDPE films feem ntau yog 0.0005 "mus rau 0.030" tuab.Lawv muaj nyob rau hauv cov xim translucent los yog opaque.HDPE kuj tseem muaj cov tshuaj tiv thaiv zoo li qub, nplaim hluav taws, thiab ultraviolet additives.
Post lub sij hawm: Apr-07-2022