[Hom hnab ntaub]

Cov khoom tsim tawm txawv teb chaws feem ntau yog polyethylene (PE), cov khoom tsim tawm hauv tsev feem ntau yog polypropylene (PP), yog ib hom thermoplastic resin tsim los ntawm ethylene polymerization. Hauv kev lag luam, nws kuj suav nrog copolymers ntawm ethylene nrog me me ntawm -olefin. Polyethylene tsis muaj ntxhiab, tsis muaj tshuaj lom, zoo li quav ciab, muaj kev tiv thaiv kub qis zoo heev (qhov kub siv qis tshaj plaws tuaj yeem txog -70 ~ -100 ℃), kev ruaj khov tshuaj zoo, tuaj yeem tiv taus feem ntau ntawm cov kua qaub thiab alkali erosion (tsis muaj oxidation ntawm acid), chav tsev kub tsis yaj hauv cov kuab tshuaj dav dav, nqus dej me me, kev ua haujlwm rwb thaiv tsev zoo heev; Tab sis polyethylene yog rhiab rau kev ntxhov siab ib puag ncig (tshuaj lom neeg thiab cov teebmeem kho tshuab) thiab tsis muaj kev tiv thaiv thermal laus. Cov khoom ntawm polyethylene sib txawv ntawm hom mus rau hom, feem ntau nyob ntawm cov qauv molecular thiab qhov ceev. Cov khoom nrog qhov ceev sib txawv (0.91 ~ 0.96g / cm3) tuaj yeem tau txais los ntawm kev siv ntau txoj kev tsim khoom. Polyethylene tuaj yeem ua tiav los ntawm txoj kev thermoplastic molding dav dav (saib kev ua yas). Nws yog dav siv rau hauv kev tsim cov yeeb yaj kiab, thawv, yeeb nkab, ib txoj hlua, hlau thiab cable, cov khoom siv niaj hnub, thiab lwm yam, thiab tuaj yeem siv ua cov ntaub ntawv rwb thaiv tsev siab rau TV, radar, thiab lwm yam. Nrog rau kev txhim kho ntawm kev lag luam petrochemical, kev tsim cov polyethylene tau tsim kho sai, cov zis ntawm kwv yees li 1/4 ntawm tag nrho cov yas tsim. Xyoo 1983, tag nrho cov peev xwm tsim cov polyethylene yog 24.65Mt, thiab lub peev xwm ntawm cov nroj tsuag uas tab tom tsim yog 3.16Mt.

Polypropylene (PP)

Ib hom thermoplastic resin uas ua los ntawm polymerization ntawm propylene. Muaj peb hom isochronous, unregulated thiab interchronous, thiab cov khoom isochronous yog cov khoom tseem ceeb ntawm cov khoom lag luam. Polypropylene kuj muaj cov copolymers ntawm propylene thiab me ntsis ethylene. Feem ntau translucent colorless solid, odorless non-toxic. Vim tias cov qauv zoo nkauj thiab crystallized heev, yog li qhov melting point txog li 167 ℃, tiv taus kub, cov khoom siv tau los ntawm kev siv chav tua kab mob yog nws qhov zoo tshaj plaws. Nrog qhov ceev ntawm 0.90g/cm3, nws yog cov yas thoob ntiaj teb sib dua tshaj plaws. Kev tiv taus corrosion, tensile zog 30MPa, lub zog, rigidity thiab transparency zoo dua li polyethylene. Qhov tsis zoo yog qhov kub qis tsis kam rau kev cuam tshuam thiab yooj yim laus, uas tuaj yeem kov yeej los ntawm kev hloov kho thiab ntxiv cov antioxidant.

Cov xim ntawm lub hnab woven feem ntau yog dawb lossis grey dawb, tsis muaj tshuaj lom thiab tsis muaj saj, feem ntau tsis ua rau tib neeg lub cev puas tsuaj, txawm hais tias nws yog ua los ntawm ntau yam tshuaj yas, tab sis nws txoj kev tiv thaiv ib puag ncig muaj zog dua, thiab lub zog rov ua dua tshiab loj dua;

Cov hnab woven yog siv dav, feem ntau yog siv rau kev ntim khoom thiab ntim khoom ntawm ntau yam khoom, siv dav hauv kev lag luam;

Lub hnab yas woven yog ua los ntawm polypropylene resin ua cov khoom siv tseem ceeb, uas yog extruded thiab ncab mus rau hauv cov ntaub txhob lo lo ntxhuav tiaj tus, tom qab ntawd woven thiab ua lub hnab.

Lub hnab yas sib xyaw ua ke yog ua los ntawm daim ntaub yas, uas yog ua los ntawm txoj kev dov.

Cov khoom no yog siv rau ntim cov hmoov lossis cov khoom siv khov kho thiab cov khoom siv yooj ywm. 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 muaj peev xwm muab faib ua lub hnab hauv qab, xaws lub hnab hauv qab, ntxig lub hnab thiab khi lub hnab xaws.

Raws li qhov dav ntawm lub hnab, nws tuaj yeem faib ua 350, 450, 500, 550, 600, 650 thiab 700mm. Cov lus qhia tshwj xeeb yuav tsum tau pom zoo los ntawm ob tog.