Kev tsim tawm txawv teb chaws feem ntau yog polyethylene (PE), cov khoom siv hauv tsev feem ntau yog polypropylene (PP), yog ib hom thermoplastic resin tsim los ntawm ethylene polymerization. Industrially, nws kuj suav nrog copolymer ntawm ethylene nrog me me ntawm -olefin. Polyethylene odorless, tsis muaj tshuaj lom, zoo li siv quav ciab, muaj qhov tsis zoo ntawm qhov kub thiab txias (qhov qis tshaj plaws siv tau mus txog -70 ~ -100 ℃), tshuaj lom neeg ruaj khov, tuaj yeem tiv taus feem ntau ntawm cov kua qaub thiab alkali yaig (tsis muaj oxidation ntawm acid), chav kub insoluble nyob rau hauv cov kuab tshuaj, me me dej nqus, zoo heev hluav taws xob rwb thaiv tsev kev ua tau zoo; Tab sis polyethylene yog rhiab heev rau ib puag ncig kev ntxhov siab (tshuaj lom neeg thiab kev siv tshuab) thiab muaj kev ua haujlwm tsis zoo rau thermal aging. Cov khoom ntawm polyethylene sib txawv ntawm hom mus rau hom, feem ntau nyob ntawm tus qauv molecular thiab ntom. Cov khoom uas muaj qhov sib txawv (0.91 ~ 0.96g / cm3) tuaj yeem tau txais los ntawm kev siv cov txheej txheem ntau lawm. Polyethylene tuaj yeem ua tiav los ntawm cov txheej txheem thermoplastic molding (saib cov txheej txheem yas). Nws yog dav siv nyob rau hauv kev tsim cov yeeb yaj kiab, thawv, yeeb nkab, ib leeg xaim, xaim thiab cable, khoom siv txhua hnub, thiab lwm yam, thiab tuaj yeem siv los ua cov khoom siv hluav taws xob ntau zaus rau TV, radar, thiab lwm yam. Nrog rau kev lag luam petrochemical, cov khoom siv polyethylene tau tsim sai heev, cov zis ntawm li 1/4 ntawm tag nrho cov khoom yas. Xyoo 1983, tag nrho cov peev txheej ntawm polyethylene yog 24.65Mt, thiab lub peev xwm ntawm cov nroj tsuag hauv kev tsim kho yog 3.16Mt.
Polypropylene (PP)
Ib qho thermoplastic resin npaj los ntawm polymerization ntawm propylene. Muaj peb qhov kev teeb tsa ntawm isochronous, unregulated thiab interchronous khoom, thiab cov khoom isochronous yog cov khoom tseem ceeb ntawm cov khoom lag luam. Polypropylene kuj suav nrog copolymer ntawm propylene thiab ib qho me me ntawm ethylene. Feem ntau translucent xim tsis muaj xim, tsw ntxhiab tsis muaj tshuaj lom. Vim hais tias cov qauv zoo huv si thiab crystallized heev, yog li lub melting point mus txog 167 ℃, tshav kub tsis kam, cov khoom siv tau siv cov tshuaj tua kab mob yog nws qhov zoo. Nrog rau qhov ceev ntawm 0.90g / cm3, nws yog lub teeb tshaj plaws universal yas. Corrosion kuj, tensile zog 30MPa, lub zog, rigidity thiab pob tshab yog zoo dua li polyethylene. Qhov tsis zoo yog qhov kub tsis tshua muaj kev cuam tshuam thiab kev laus yooj yim, uas tuaj yeem kov yeej los ntawm kev hloov kho thiab ntxiv cov tshuaj antioxidant raws li.
Cov xim ntawm lub hnab woven feem ntau yog dawb lossis grey dawb, tsis muaj tshuaj lom thiab tsis qab, feem ntau tsis tshua muaj kev puas tsuaj rau tib neeg lub cev, txawm hais tias nws yog tsim los ntawm ntau hom tshuaj yas, tab sis nws cov kev tiv thaiv ib puag ncig muaj zog dua, thiab lub zog rov ua dua yog loj dua;
Woven hnab yog siv dav, feem ntau yog siv rau kev ntim khoom thiab ntim khoom ntawm ntau yam khoom, dav siv hauv kev lag luam;
Lub hnab yas woven yog ua los ntawm polypropylene cob ua cov khoom siv tseem ceeb, uas yog extruded thiab ncab mus rau hauv cov ntaub qhwv, ces woven thiab lub hnab ua.
Lub hnab yas sib xyaw ua ke yog ua raws li cov ntaub ntawv yas, uas yog tsim los ntawm txoj kev dov.
Cov khoom siv no yog siv los ntim cov hmoov los yog cov khoom siv granular thiab cov khoom siv tau yooj yim. Lub hnab yas sib xyaw ua ke muab faib ua ob lub hnab hauv ib lub hnab thiab peb lub hnab hauv ib lub hnab raws li cov khoom siv tseem ceeb.
Raws li txoj kev xaws, nws tuaj yeem muab faib ua lub hnab xaws hauv qab, xaws hauv qab hnab, ntxig hnab tshos thiab khi lub hnab xaws.
Raws li qhov dav dav ntawm lub hnab, nws tuaj yeem muab faib ua 350, 450, 500, 550, 600, 650 thiab 700mm. Tshwj xeeb specifications yuav tsum tau pom zoo los ntawm ob tog.
Post lub sij hawm: Sep-28-2020