Txij li thaum txoj kev loj hlob ntawm geotextiles nyob rau hauv lub xyoo 1980s, daim ntawv thov teb ntawm woven hnab tau dav, thiab nws yog dav siv nyob rau hauv kev tsim kho ntawm me me dej txuag, hluav taws xob fais fab, txoj kev, railways, seaports, mining siv thiab tub rog engineering. Nyob rau hauv cov haujlwm no, cov khoom siv geosynthetic muaj filtration, kua, ntxiv dag zog, kev sib cais, seepage tiv thaiv thiab lwm yam dej num, thiab yas geotextiles yog ib yam ntawm cov hluavtaws geomaterials.
Raws li peb txoj kev nkag siab ntawm lub hnab woven txuas ntxiv mus, cov neeg siv khoom xav tau ntau thiab ntau nyiam yuav cov hnab ntim nrog cov qauv luam tawm hauv cov hnab yas woven hnab manufacturers, vim hais tias lub hnab woven no nrog cov qauv luam tawm tuaj yeem pab peb kom paub qhov txawv ntawm cov khoom ntim, tab sis cov ntaub qhwv yuav tsum ua raws. ib co paib thaum luam ntawv.
Ib qho thermoplastic cob ua los ntawm polymerization ntawm propylene. Muaj peb qhov kev teeb tsa ntawm isotactic, random thiab intertactic, thiab isotactic yog lub ntsiab 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, tsis muaj ntxhiab thiab tsis muaj tshuaj lom. Vim yog cov qauv tsis tu ncua thiab siab crystallization, lub melting point yog siab li 167 degree C, kub tsis kam, thiab cov khoom tuaj yeem ua kom tsis muaj menyuam yog nws qhov zoo. Nrog rau qhov ntom ntawm 0.90g/cm3, nws yog lub hom phiaj dav dav tshaj plaws. Corrosion kuj, tensile zog 30MPa, lub zog, rigidity thiab pob tshab yog zoo dua li polyethylene. Qhov tsis zoo yog tias qhov kub tsis tshua muaj kev cuam tshuam tsis zoo, thiab nws yooj yim dua rau hnub nyoog, tab sis nws tuaj yeem kov yeej los ntawm kev hloov kho thiab ntxiv cov tshuaj antioxidants feem.
Los ntawm kev siv thev naus laus zis tshiab, niaj hnub tsim cov khoom lag luam woven tshiab, nthuav dav daim ntawv thov ntawm lub hnab yas woven, cov hnab yas woven cov qauv kev hloov kho, cov khoom sib txawv, hloov mus rau cov neeg siv khoom sib txawv; Woven hnab khoom los ntawm cov khoom qis kawg rau cov khoom lag luam high-end, txhim kho tus nqi ntxiv ntawm cov khoom siv yas woven, cov khoom siv yas woven upgrade, tshem tawm rov qab muaj peev xwm, txhim kho cov khoom zoo ntawm cov yas woven thiab lub zog txuag thiab kev noj qab haus huv; Kev npaj sib koom ua ke, kev txhim kho pawg, cov chaw ua haujlwm hauv nruab nrab, los ntawm kev hloov pauv thev naus laus zis, kev txuag hluav taws xob thiab kev txo qis, ntxiv dag zog rau kev tswj hwm, nce nyiaj tau los thiab txo kev siv nyiaj; Xav kom ntev lub hnab ntim kev lag luam saw, xav kom nthuav dav txog kev lag luam, ua haujlwm ntau yam, thiab ua kom lub lag luam loj thiab muaj zog.