High-density polyethylene (HDPE) thiab Polyethylene (PE) yog ob hom yas polymers uas feem ntau siv rau ntau yam kev siv. Txawm hais tias ob qho tib si cov ntaub ntawv muaj qee qhov sib xws, lawv muaj qhov sib txawv loj ntawm lawv cov khoom, kev siv, thiab kev tsim khoom. Hauv tsab xov xwm no, peb yuav tshawb txog qhov sib txawv tseem ceeb ntawm HDPE thiab PE.Qhov no yog peb lub vev xaib Facebook:www.facebook.com, IFAN Hoobkas 30 ntxiv rau xyoo tsim kev txhawb nqa xim / qhov loj me kev txhawb nqaqauv dawb.
1. Chemical Structure
Ib qho ntawm qhov sib txawv tseem ceeb ntawm HDPE thiab PE yog lawv cov qauv tshuaj. HDPE yog cov khoom siv high-density thiab linear polymer uas yog tsim los ntawm kev siv ethylene los tsim cov saw ntev ntawm cov khoom siv polymer. Ntawm qhov tod tes, pe yog cov tuab tuab polymer uas muaj tus qauv coj. Qhov sib txawv ntawm cov qauv molecular no muaj txiaj ntsig zoo rau lawv lub cev thiab tshuaj lom neeg.
2. Lub cev muaj zog
HDPE yog denser ntau dua PE, nrog qhov ceev ntawm {{0}} 95 - 0.97 g/cm3, hos qhov ceev ntawm PE yog nyob ib ncig ntawm 0.91 - 0.94 g/ cm3 ua. Qhov no txhais tau tias HDPE tiv taus ntau dua rau kev puas tsuaj, hnav, thiab cuam tshuam ntau dua li PE. Nws kuj tseem tiv taus tshuaj, UV rays, thiab huab cua, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev siv sab nraum zoov. HDPE muaj qhov melting point ntawm 120 degree, thaum PE muaj qhov melting point tsuas yog 105 degree.
3. Cov txheej txheem tsim khoom
HDPE thiab PE yog tsim los ntawm kev tsim khoom sib txawv. HDPE yog tsim los siv cov txheej txheem siab uas ethylene yog polymerized ntawm qhov kub siab thiab kub nyob rau hauv lub xub ntiag ntawm catalyst. Cov txheej txheem no tsim cov saw ntev ntawm cov molecules polymer uas muaj zog heev thiab tiv taus hnav thiab tsim kua muag. PE, ntawm qhov tod tes, yog tsim los siv cov txheej txheem tsis tshua muaj siab uas ethylene yog polymerized ntawm qhov kub thiab txias. Cov txheej txheem no tsim cov khoom siv polymer nrog cov qauv ceg, uas ua rau cov khoom siv tsis muaj zog thiab tsis muaj zog.
4. Cov ntawv thov
HDPE yog dav siv nyob rau hauv ntau yam kev siv, nrog rau cov kav dej, liners, nplooj ntawv, thiab zaj duab xis. Nws kuj tseem siv rau hauv kev tsim kho kev lag luam rau geosynthetics, xws li geotextiles, geomembranes, thiab geogrids. HDPE kuj tseem siv rau hauv kev lag luam ntim rau lub raj mis, ntim, thiab cov thawv.
PE, ntawm qhov tod tes, feem ntau yog siv rau hauv zaj duab xis thiab daim ntawv thov xws li lub hnab khw, ntim cov yeeb yaj kiab, thiab cov yeeb yaj kiab ua liaj ua teb. Nws kuj tseem siv rau hauv kev tsim cov khoom ua si, khoom siv hauv tsev, thiab cov khoom ntim khoom.
5. Kev rov ua dua tshiab
Ob HDPE thiab PE yog cov khoom siv rov ua dua tshiab thiab tuaj yeem rov qab siv dua hauv kev tsim cov khoom tshiab. HDPE yog cov khoom siv rov ua dua tshiab, nrog tus nqi rov ua dua li ntawm 30 feem pua. Nws kuj yog ib qho ntawm cov yas uas yooj yim tshaj plaws rau kev rov ua dua tshiab, vim tias nws tuaj yeem rov ua dua rau hauv ntau yam khoom xws li cov kav dej, cov thawv, thiab cov khoom ntim. PE, ntawm qhov tod tes, tsis yog siv dav dav li HDPE vim nws cov khoom tsis muaj zog, tab sis nws tseem tuaj yeem siv rau hauv ntau yam khoom xws li cov kav dej, cov hnab khib nyiab, thiab cov hnab hauv tsev loj.
Xaus
Hauv kev xaus, HDPE thiab PE yog ob cov ntaub ntawv yas uas muaj qee qhov sib xws tab sis kuj muaj qhov sib txawv loj. HDPE yog denser, ruaj dua, thiab muaj kev tiv thaiv zoo dua rau hnav, tsim kua muag, thiab tshuaj PE. HDPE kuj tau siv dav hauv ntau daim ntawv thov, suav nrog cov kav dej, cov ntaub ntawv, cov ntawv txheeb, thiab cov yeeb yaj kiab. PE, ntawm qhov tod tes, feem ntau yog siv los tsim cov hnab khw, ntim cov yeeb yaj kiab, thiab cov yeeb yaj kiab ua liaj ua teb. Ob qho khoom siv rov ua dua tshiab, nrog HDPE muaj tus nqi rov ua dua tshiab thiab tau siv dav dua li PE.