Qhov nrov ntawm cov hnab woven

Muaj ntau tus neeg siv khoom los ntawm peb lub vev xaib los hu xov tooj qhia txog qhov nrov ntawm cov hnab woven, ces hnub no DongLai woven hnab Xiaobian los piav qhia txog qhov nrov ntawm cov hnab woven.

Hom hnab ntaub

Cov hnab ntaub kuj hu ua cov hnab tawv nab. Nws yog ib hom yas, feem ntau yog siv rau kev ntim khoom. Cov khoom siv raw feem ntau yog polyethylene, polypropylene thiab lwm yam yas tshuaj lom neeg raw. Nov yog kev qhia luv luv txog hom hnab ntaub thiab kev siv.

Polyethylene yog cov khoom siv tseem ceeb ntawm kev tsim khoom txawv teb chaws, polypropylene yog cov khoom tseem ceeb ntawm kev tsim khoom hauv tsev. Nws yog cov thermoplastic resin ua los ntawm polymerization ntawm ethylene. Hauv kev lag luam, nws kuj suav nrog copolymers ntawm ethylene nrog me ntsis ntawm α-olefin. Polyethylene tsis muaj ntxhiab, tsis muaj tshuaj lom, zoo li waxy, muaj kev tiv thaiv kub qis zoo heev (qhov kub ua haujlwm tsawg kawg nkaus txog -70 ~ -100 ℃), kev ruaj khov tshuaj zoo, feem ntau acid thiab alkali corrosion tsis kam (acid tsis kam, oxidation), tsis yaj hauv cov kuab tshuaj dav dav ntawm chav tsev kub, nqus dej tsawg, kev ua haujlwm rwb thaiv tsev zoo heev; Txawm li cas los xij, polyethylene rhiab heev rau kev nyuaj siab ib puag ncig (tshuaj lom neeg thiab cov khoom siv kho tshuab) thiab tsis muaj kev tiv thaiv kub laus. Cov yam ntxwv ntawm polyethylene sib txawv ntawm ntau yam mus rau ntau yam, feem ntau nyob ntawm cov qauv molecular thiab qhov ceev. Cov txheej txheem tsim khoom sib txawv tuaj yeem ua rau muaj qhov ceev sib txawv (0.91-0.96g / cm3). Polyethylene tuaj yeem ua tiav tib yam li cov yas thermoplastic ib txwm muaj pwm (saib Yas ua). Siv dav hauv kev tsim cov yeeb yaj kiab, cov thawv, cov kav dej, cov xov hlau ib leeg, cov xov hlau thiab cov cable, cov khoom siv niaj hnub, thiab lwm yam. Nws tuaj yeem siv ua cov khoom siv 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, suav txog li 1/4 ntawm tag nrho cov yas tsim. Xyoo 1983, lub ntiaj teb tag nrho cov peev xwm tsim cov polyethylene yog 24.65 metric tons, thiab lub Hoobkas uas tab tom tsim muaj peev xwm ntawm 3.16 metric tons.

Polypropylene (PP)

Ib hom thermoplastic resin ua los ntawm polymerization ntawm propylene. Muaj peb hom kev teeb tsa, uas yog, tag nrho isotopic, atactic thiab indirect. Cov khoom lag luam feem ntau yog tsim los ntawm cov qauv isotopic. Polypropylene kuj muaj cov copolymer ntawm propylene thiab me ntsis ntawm ethylene. Nws feem ntau yog ib qho khoom translucent, tsis muaj xim, tsis muaj ntxhiab thiab tsis muaj tshuaj lom. Vim nws cov qauv, crystallinity siab, melting point txog li 167 ℃, tiv taus kub. Nrog qhov ceev ntawm 0.90g / cm3, nws yog lub teeb tshaj plaws versatile yas. Kev tiv taus corrosion, tensile zog 30MPa, lub zog, rigidity thiab pob tshab zoo dua li polyethylene. Qhov tsis zoo yog qhov kub qis tsis kam cuam tshuam, yooj yim rau kev laus, tab sis tuaj yeem hloov kho thiab ntxiv antioxidant kom kov yeej.

Cov xim ntawm lub hnab woven yog dawb los yog tawm-dawb feem ntau, tsis muaj tshuaj lom thiab tsis muaj saj, qhov kev puas tsuaj rau tib neeg lub cev feem ntau me dua. Txawm hais tias ua los ntawm ntau yam tshuaj yas, tab sis muaj zog tiv thaiv ib puag ncig, lub zog rov ua dua tshiab;

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

Lub hnab yas woven nrog polypropylene resin ua cov khoom siv raw tseem ceeb, extrusion thiab ncab mus rau hauv xov tiaj tus, thiab tom qab ntawd woven rau hauv ib lub hnab.

Lub hnab yas sib xyaw ua ke nrog daim ntaub yas ua cov khoom siv tseem ceeb, los ntawm kev txhaj tshuaj molding.

Siv rau ntim cov hmoov lossis cov khoom siv khov kho thiab cov khoom siv yoog tau. Lub hnab yas sib xyaw ua ke muab faib ua ob hauv ib lub hnab thiab peb 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, lub hnab xaws sab hauv qab, lub hnab ntxig thiab lub hnab xaws uas muaj kua nplaum.

Nyob ntawm seb lub hnab dav npaum li cas, nws muaj peev xwm muab faib ua 450, 500, 550, 600, 650 thiab 700 hli. Cov lus qhia tshwj xeeb yuav tsum tau pom zoo los ntawm ob tog.

Saum toj no yog qhov nrov ntawm kev tsim me me rau txhua hom kev ua tiav ntawm lub hnab woven kev sab laj txog kev sab laj, los ntawm kev sib koom cov ntsiab lus, rau qhov nrov ntawm cov hnab woven hom muaj qee qhov kev paub, yog tias koj xav mus tob dua rau hauv lub hnab ntawm cov ntaub ntawv lag luam, tuaj yeem tiv tauj tus neeg muag khoom hauv peb lub tuam txhab, lossis mus rau sab hnub tuaj thiab lub hnab woven tshawb nrhiav ntawm qhov chaw, kev sib txuas lus sib tham tau tham hauv daim ntawv no.