Polyethylene muab faib ua high-density polyethylene (HDPE), low-density polyethylene (LDPE) thiab linear low-density polyethylene (LLDPE) raws li txoj kev polymerization, molecular hnyav thiab saw qauv.
LDPE
Khoom: saj tsis qab, tsis muaj ntxhiab, tsis muaj tshuaj lom, matte nto, milky dawb waxy hais, ntom ntawm li 0.920 g / cm3, melting point 130 degree ~ 145 degree. Insoluble nyob rau hauv dej, me ntsis soluble nyob rau hauv hydrocarbons, thiab lwm yam. Nws tuaj yeem tiv taus feem ntau cov kua qaub thiab alkali yaig, nqus dej me me, tseem tuaj yeem tswj tau yooj yim ntawm qhov kub thiab txias, thiab muaj hluav taws xob rwb thaiv tsev siab.
Cov txheej txheem ntau lawm: feem ntau muaj ob hom kev kub siab raj txoj kev thiab cov kav dej. Txhawm rau txo cov tshuaj tiv thaiv kub thiab siab, cov txheej txheem tubular feem ntau siv cov txheej txheem qis thiab siab ua haujlwm primer pib, nrog high-purity ethylene ua cov khoom tseem ceeb, propylene, propane, thiab lwm yam. Kev ua haujlwm siab pib yog siv los ua cov tshuaj tiv thaiv polymerization nyob rau hauv cov xwm txheej ntawm 200 degree ~ 330 degree thiab 150 ~ 300MPa. Lub molten polymer uas pib polymerization nyob rau hauv lub reactor yuav tsum tau txias thiab sib cais los ntawm kev kub siab, nruab nrab siab thiab tsis tshua muaj siab, thiab cov high-pressure circulating gas yog txias thiab sib cais thiab xa mus rau lub ultra-siab siab (300 MPa) compressor inlet, Qhov nruab nrab siab circulating roj yog txias thiab sib cais thiab xa mus rau lub siab-siab (30 MPa) compressor inlet, thiab cov low-pressure circulating gas yog txias thiab sib cais thiab xa mus rau lub low-pressure (0.5 MPa) compressor rau recycling, thaum. cov molten polyethylene raug xa mus rau lub granulator tom qab high-pressure thiab low-pressure sib cais rau dej pelletizing thaum lub sij hawm granulation, cov lag luam muaj peev xwm ntxiv haum additives raws li txawv daim ntawv thov teb, thiab cov granules yog ntim thiab xa.
Kev siv: tuaj yeem siv txhaj tshuaj molding, extrusion, tshuab moulding thiab lwm txoj kev ua. Feem ntau yog siv los ua zaj duab xis ua liaj ua teb, cov khoom ntim zaj duab xis, tshuaj thiab zaub mov ntim zaj duab xis, cov khoom siv kho tshuab, cov khoom siv niaj hnub, cov ntaub ntawv hauv tsev, hlau, cable rwb thaiv tsev, txheej thiab ntawv hluavtaws.
LLDPE
Khoom: Vim muaj qhov sib txawv ntawm cov qauv molecular ntawm LLDPE thiab LDPE, qhov kev ua tau zoo kuj txawv. Piv nrog LDPE, LLDPE muaj qhov zoo ntawm ib puag ncig kev ntxhov siab tawg ua haujlwm, hluav taws xob rwb thaiv tsev, kub kub tsis kam, cuam tshuam tsis kam thiab puncture tsis kam. Cov txheej txheem ntau lawm: LLDPE resin feem ntau yog tsim los ntawm cov khoom siv polyethylene puv ntom ntom, thiab cov txheej txheem tsim khoom yog tus txheej txheem Innovene thiab UCC's Unipol txheej txheem.
Siv: Los ntawm kev txhaj tshuaj molding, extrusion, tshuab moulding thiab lwm txoj kev molding, kev tsim cov yeeb yaj kiab, cov khoom siv niaj hnub, cov kav dej, cov xov hlau thiab cables, thiab lwm yam.
HDPE
Cov khoom siv: xim ntuj, cylindrical lossis tiaj tus puag ncig, cov khoom du, qhov loj ntawm cov khoom yuav tsum yog 2 hli ~ 5 hli nyob rau hauv txhua qhov kev taw qhia, tsis muaj cov khoom tsis huv, thermoplastic. Cov hmoov yog hmoov dawb, thiab cov khoom tsim nyog tau tso cai kom muaj xim daj. Nws yog insoluble nyob rau hauv cov kuab tshuaj nyob rau hauv chav tsev kub, tab sis nws muaj peev xwm o thaum raug aliphatic hydrocarbons, muaj ntxhiab hydrocarbons thiab halogenated hydrocarbons ntev, thiab me ntsis soluble nyob rau hauv toluene thiab acetic acid nyob rau saum toj 70 degree. Oxidation tshwm sim thaum cua sov hauv huab cua thiab nyob rau hauv lub hnub ci. Muaj peev xwm tiv taus feem ntau cov kua qaub thiab alkalis. Kev nqus dej tsawg, tseem tuaj yeem tswj tau yooj yim ntawm qhov kub thiab txias, hluav taws xob rwb thaiv tsev siab.
Cov txheej txheem ntau lawm: roj theem txoj kev thiab slurry txoj kev yog saws.
Kev siv: siv kev txhaj tshuaj molding, tshuab moulding, extrusion, rotational molding thiab lwm txoj kev molding, kev tsim cov khoom siv yeeb yaj kiab, cov khoom siv niaj hnub thiab cov thawv hollow, cov kav dej, cov hlua khi thiab cov hlua khi rau ntim, hlua thiab cables, nuv ntses nets thiab woven fibers , xov hlau thiab cables, thiab lwm yam.
