Lub npe tag nrho: High Density Polyethylene
Cov ntawv luv: HDPE
Cov yam ntxwv tseem ceeb: Cov yas ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom nt ຂຶ້ນ tuaj lossis ntxig rau saum npoo lossis polyethylene tuaj yeem ua kom zoo ib yam li cov dej thiab qhov nqus tshwj xeeb ntawm 0.941 ~ 0.960. Nws yog mos thiab tawv, tab sis nyuab dua li LDPE, thiab nthuav me ntsis, tsis muaj tshuaj lom thiab tsis qab.
Cov yam ntxwv ntawm kev sib txuas: Nws yog cov nplaim taws thiab tuaj yeem hlawv txuas ntxiv tom qab tawm hauv qhov hluav taws. Qhov kawg ntawm nplaim taws yog daj thiab qhov qis kawg yog xiav. Nws yuav yaj thaum hlawv, nrog kua ntws thiab tsis muaj pa luam yeeb dub. Nyob rau tib lub sijhawm, nws tawm tsw ntxhiab ntawm paraffin ciab.
Cov txiaj ntsig tseem ceeb: Acid thiab alkali tsis kam, cov organic hnyav tiv taus, rwb thaiv hluav taws xob zoo heev, thiab tseem tswj hwm qee qhov kev tawv ntawm qhov kub. Cov tawv tawv, lub zog tensile, nruj thiab lwm yam khoom siv dag zog siab dua LDPE, ze rau PP, tawv dua PP, tab sis qhov ua tiav saum npoo tsis zoo li PP.
Qhov Tsis Zoo: Cov khoom siv tsis zoo, huab cua tsis zoo, hloov pauv tau yooj yim, laus laus yooj yim, yooj yim tawg, tsis nkig dua PP, yooj yim rau kev nyuaj siab tawg, tsis muaj qhov tawv tawv, yooj yim rau khawb. Nws nyuaj rau luam tawm. Thaum luam ntawv, yuav tsum tau kho qhov chaw tawm, tsis muaj hluav taws xob, thiab saum npoo yog npub.
Cov ntawv thov: Siv rau extruding ntim zaj duab xis, hlua, hnab ntim, nuv ntses nuv ntses, kav dej; txhaj tshuaj mould-qis kawg txhua hnub uas yuav tsum tau thiab lub plhaub, cov khoom tsis ntim khoom, thawv yas, thawv hloov pauv; extrusion tshuab moulding ntim, khoom hollow, fwj.
Txhaj tshuaj molding txheej txheem: HDPE muaj ntau daim ntawv thov, suav txij li rov qab siv tau cov khob dej-phab ntsa rov qab rau 5-gsl poom, uas haus 1/5 ntawm HDPE hauv tsev. Txhaj tshuaj molding qib feem ntau muaj qhov ntsuas yaj ntawm 5-10. Muaj cov qib uas muaj qhov tawv thiab qis dua thiab qib qis dua nrog cov txheej txheem. Kev siv suav nrog cov khoom siv txhua hnub thiab cov khoom ntim nyias nyias-phab ntsa; tawv, cov zaub mov ruaj khov thiab cov kaus poom xim; siab tsis kam rau ib puag ncig kev nyuab siab tawg daim ntawv thov, xws li lub cav tsheb me me tso tsheb hlau luam thiab 90-gal cov thoob khib nyiab.
Feem ntau, cov ntsiab lus melting ntawm HDPE yog 142 ° C, thiab qhov kub hnyiab yog 300 ° C; qhov ntsuas ntau ntawm kev ntsuas kub yog qhov loj. Thaum txhaj tshuaj molding, kev siv dav dav yog 180 ℃ -230 ℃; vim nws yog yas olefin, nws tsis nqus dej, thiab nws tsis tas yuav qhuav thaum tsim khoom, tab sis rau cov khoom lag luam zoo, nws tuaj yeem qhuav ntawm 60 ℃ rau 1 teev kom tso dej ntab; polyethylene Cov viscosity yaj siab, qhov sib piv qhov ntev yog me me, thiab cov khoom siv phab ntsa nyias yuav tsis muaj kua nplaum. Yog li ntawd, lub qhov rooj thiab tus neeg khiav dej num yog tus loj; cov khoom lag luam tau yooj yim raug them nrog hluav taws xob zoo li qub, thiab nto yog qhov yooj yim nyiam. Tus nqi qis yog 16 ‰, thiab tus nqi ntws yog 0.05mm.
