PU yog lub npe luv ntawm lus Askiv poly urethane, tshuaj Suav lub npe "polyurethane". PU tawv yog cov tawv nqaij ntawm cov khoom siv polyurethane. Dav siv nyob rau hauv lub nra, khaub ncaws, khau, tsheb thiab rooj tog kho kom zoo nkauj.
Pu tawv yog ib hom hluavtaws tawv, nws muaj pes tsawg leeg muaj xws li cov hauv qab no:
1. Substrate: Feem ntau siv cov ntaub fiber ntau, fiber ntau zaj duab xis thiab lwm yam khoom siv los ua cov khoom siv los txhim kho lub zog thiab durability ntawm Pu tawv.
2. Emulsion: Kev xaiv cov khoom siv hluavtaws emulsion lossis ntuj emulsion ua cov khoom siv txheej tuaj yeem txhim kho kev ntxhib los mos thiab softness ntawm Pu tawv.
3. Additives: xws li plasticizers, mixs, solvents, ultraviolet absorbers, thiab lwm yam., cov additives no yuav txhim khu lub zog, durability, dej tsis kam, muaj kuab paug kuj thiab UV tsis kam ntawm Pu tawv.
4. Astringent media: Astringent media feem ntau yog cov kua qaub, siv los tswj cov pH nqi ntawm Pu tawv, txhawm rau pab txhawb kev sib xyaw ntawm cov txheej thiab substrate, kom Pu tawv muaj qhov zoo thiab lub neej.
Cov saum toj no yog cov khoom tseem ceeb ntawm Pu tawv, piv nrog ntuj tawv, Pu tawv tuaj yeem hnav ntau dua, tsis muaj dej thiab pheej yig, tab sis kev ntxhib los mos, permeability thiab lwm yam yog me ntsis qis dua cov tawv nqaij.
Hauv Suav teb, tib neeg tau siv PU cob ua raw khoom los tsim cov tawv tawv hu ua PU tawv tawv (hu ua PU tawv); Cov tawv tawv uas ua nrog PU resin thiab cov ntaub tsis-woven li raw cov ntaub ntawv yog hu ua PU hluavtaws tawv (hu ua hluavtaws tawv). Nws yog kev cai xa mus rau saum peb hom tawv li hluavtaws tawv. Koj npe li cas? Nws yuav tsum muaj kev sib koom ua ke thiab tsim qauv kom muab nws lub npe tsim nyog dua.
Artificial tawv thiab hluavtaws tawv yog ib qho tseem ceeb ntawm cov yas kev lag luam thiab tau dav siv nyob rau hauv ntau yam lag luam ntawm lub teb chaws kev lag luam. Artificial tawv, hluavtaws tawv ntau lawm nyob rau hauv lub ntiaj teb no muaj ntau tshaj li 60 xyoo ntawm txoj kev loj hlob keeb kwm, Tuam Tshoj pib tsim thiab tsim cov tawv hluavtaws txij li thaum 1958, nws yog qhov ntxov tshaj plaws kev loj hlob nyob rau hauv Tuam Tshoj txoj kev lag luam yas kev lag luam. Nyob rau hauv xyoo tas los no, txoj kev loj hlob ntawm Tuam Tshoj cov tawv tawv thiab hluavtaws tawv kev lag luam tsis yog tsuas yog kev loj hlob ntawm cov khoom siv ntau lawm kab ntawm cov tuam txhab tsim khoom, cov khoom tsim tawm kev loj hlob xyoo tom qab xyoo, ntau yam thiab xim nce xyoo dhau los, tab sis kuj muaj kev loj hlob ntawm kev lag luam. nws tus kheej lub koom haum kev lag luam, muaj kev sib koom ua ke ntau, uas tuaj yeem ua rau Tuam Tshoj cov tawv tawv thiab hluavtaws tawv cov lag luam, suav nrog cov lag luam muaj feem cuam tshuam ua ke. Tsim los rau hauv kev lag luam nrog lub zog loj heev.
Ua raws li PVC tawv tawv, PU hluavtaws tawv tom qab ntau tshaj 30 xyoo ntawm kev tshawb fawb thiab kev loj hlob los ntawm kev tshawb fawb thiab thev naus laus zis, raws li kev hloov zoo tshaj plaws rau cov tawv nqaij, tau ua tiav cov txheej txheem kev vam meej.
PU coated rau saum npoo ntawm cov ntaub thawj zaug tshwm sim nyob rau hauv kev ua lag luam nyob rau hauv lub xyoo 1950s, thiab nyob rau hauv 1964, lub US DuPont tuam txhab tsim ib tug PU hluavtaws tawv rau sab sauv. Tom qab lub tuam txhab Nyij Pooj tau tsim cov kab ntau lawm nrog cov khoom tsim tawm txhua xyoo ntawm 600,000 square meters, tom qab ntau tshaj 20 xyoo ntawm kev tshawb fawb thiab kev loj hlob, PU hluavtaws tawv tau loj hlob sai hauv cov khoom zoo, ntau yam, lossis cov khoom tsim tawm. Nws qhov kev ua tau zoo tau los ze zog mus rau cov tawv nqaij, thiab qee cov khoom tseem ceeb tshaj li cov tawv nqaij, ncav cuag qhov tseeb thiab tsis tseeb nrog cov tawv nqaij, tuav txoj haujlwm tseem ceeb hauv tib neeg lub neej txhua hnub.
Niaj hnub no, Nyiv yog cov neeg tsim khoom loj tshaj plaws ntawm cov tawv hluavtaws, thiab cov khoom ntawm ntau lub tuam txhab xws li Coroli, Teijin, Toray, thiab Tswb Textile yeej sawv cev rau theem ntawm kev loj hlob thoob ntiaj teb hauv xyoo 1990. Nws cov fiber ntau thiab non-woven fabric manufacturing yog tsim rau ultra-nplua, high-density thiab siab non-woven nyhuv. Nws cov PU raug xa mus rau cov kev taw qhia ntawm PU dispersion, PU dej emulsion, khoom daim ntawv thov teb txuas ntxiv nthuav dav, txij li thaum pib ntawm khau, hnab rau khaub ncaws, pob, kho kom zoo nkauj thiab lwm yam tshwj xeeb daim ntawv thov teb, thoob plaws txhua yam ntawm tib neeg lub neej txhua hnub.
Artificial tawv
Artificial tawv yog qhov ntxov tshaj plaws tsim rau tawv npuag hloov, nws yog ua los ntawm PVC plus plasticizer thiab lwm yam additives dov composite ntawm daim ntaub, qhov zoo dua yog pheej yig, nplua nuj xim, ntau yam qauv, qhov tsis zoo yog yooj yim rau tawv, nkig. PU hluavtaws tawv yog siv los hloov PVC tawv tawv, nws tus nqi siab dua PVC tawv tawv. Los ntawm cov qauv tshuaj, nws yog ze rau cov tawv ntaub, nws tsis siv plasticizers kom ua tiav cov khoom muag, yog li nws yuav tsis nyuaj, nkig, thiab muaj qhov zoo ntawm cov xim nplua nuj, ntau yam qauv, thiab tus nqi yog pheej yig dua li tawv ntaub, yog li nws tau txais tos los ntawm cov neeg siv khoom.
Muaj lwm hom PU tawv, feem ntau sab nraud yog txheej thib ob ntawm tawv, coated nrog ib txheej ntawm PU resin rau saum npoo, yog li nws tseem hu ua tawv tawv. Nws tus nqi pheej yig dua thiab kev siv tus nqi siab. Nrog rau kev hloov ntawm cov txheej txheem kuj tseem ua rau ntau qib ntawm ntau yam, xws li cov ntaub ntawv txawv teb chaws ob txheej, vim cov txheej txheem tshwj xeeb, ruaj khov zoo, tshiab ntau yam thiab lwm yam ntxwv, rau cov tawv qib siab, tus nqi thiab qib tsis muaj. tsawg dua thawj txheej ntawm tawv. PU tawv thiab cov hnab tawv tiag tiag muaj lawv tus kheej cov yam ntxwv, PU tawv hnab zoo nkauj, yooj yim rau kev saib xyuas, tus nqi qis, tab sis tsis hnav-tiv taus, yooj yim tawg; Cov tawv tiag tiag yog kim thiab teeb meem rau kev tu, tab sis ruaj khov.
Tawv npuag thiab PVC tawv tawv, pu hluavtaws tawv nrog ob txoj hauv kev kom paub qhov txawv: ua ntej, qhov degree ntawm softness ntawm daim tawv nqaij, tawv yog mos heev, pu yog tawv, yog li feem ntau ntawm pu yog siv nyob rau hauv khau tawv; Qhov thib ob yog siv cov txheej txheem ntawm kev kub nyhiab thiab melting kom paub qhov txawv, txoj kev yog coj ib daim ntaub me me rau ntawm qhov hluav taws kub, cov ntaub tawv yuav tsis yaj, thiab PVC tawv tawv, PU hluavtaws tawv yuav yaj.
Qhov sib txawv ntawm PVC tawv tawv thiab PU hluavtaws tawv tuaj yeem paub qhov txawv ntawm txoj kev ntub dej hauv cov roj av, txoj kev yog siv cov ntaub me me, muab tso rau hauv roj av rau ib nrab ib teev, thiab tom qab ntawd muab nws tawm, yog tias nws yog PVC tawv tawv, nws yuav nyuaj thiab nkig, yog tias nws yog PU hluavtaws tawv, nws yuav tsis tawv thiab nkig.
Cov tawv nqaij ntuj vim nws cov yam ntxwv zoo heev tau siv dav hauv kev tsim cov khoom siv niaj hnub thiab cov khoom lag luam, tab sis nrog kev loj hlob ntawm cov pej xeem hauv ntiaj teb, tib neeg xav tau tawv dua ob npaug, cov tawv tawv tsis muaj peev xwm ntev ntev tsis tuaj yeem ua tau raws li cov neeg xav tau. . Txhawm rau daws qhov kev tsis sib haum xeeb no, cov kws tshawb fawb tau pib tshawb fawb thiab tsim cov tawv tawv thiab hluavtaws tawv ntau xyoo dhau los los ua kom tsis muaj tawv nqaij. Cov txheej txheem keeb kwm ntawm ntau tshaj 50 xyoo ntawm kev tshawb fawb yog cov txheej txheem ntawm cov tawv tawv thiab hluavtaws tawv tawv tawv tawv.
Cov kws tshawb fawb tau pib los ntawm kev kawm thiab tshuaj xyuas cov tshuaj muaj pes tsawg leeg thiab cov qauv tsim ntawm cov tawv nqaij, pib nrog nitrocellulose linoleum, thiab nkag mus rau PVC tawv tawv, uas yog thawj tiam ntawm tawv tawv. Rau lub hauv paus no, cov kws tshawb fawb tau ua ntau yam kev txhim kho thiab kev tshawb nrhiav, ua ntej ntawm tag nrho cov, kev txhim kho ntawm cov substrate, thiab tom qab ntawd hloov kho thiab txhim kho cov txheej txheej. Los ntawm xyoo 1970, cov ntaub tsis-woven ntawm hluavtaws fiber ntau tau tshwm sim rau hauv mesh, kev sib txuas rau hauv mesh thiab lwm yam txheej txheem, kom cov khoom siv hauv paus muaj ntau yam zoo li, hollow fiber ntau, kom ua tiav cov qauv ntxeem tau, thiab ua tau raws li cov qauv kev xav tau ntawm lub network. ntuj tawv; Nyob rau lub sijhawm ntawd, txheej txheej ntawm cov tawv hluavtaws tau ua tiav cov txheej txheem micro-porous polyurethane, uas yog sib npaug ntawm cov tawv tawv tawv, kom cov tsos thiab cov qauv sab hauv ntawm PU hluavtaws tawv yog maj mam ze rau lub ntuj. tawv, lwm yam khoom ntawm lub cev yog ze rau qhov ntsuas ntawm cov tawv nqaij, thiab xim yog ci dua li cov tawv nqaij; Lub folding kuj nyob rau hauv chav tsev kub ncav cuag ntau tshaj 1 lab lub sij hawm, thiab lub folding kuj nyob rau hauv qis kub kuj mus txog rau theem ntawm tej tawv nqaij.
Qhov tshwm sim ntawm microfiber PU hluavtaws tawv yog lub cim thib peb ntawm tawv tawv. Cov ntaub tsis-woven ntawm nws cov qauv peb-dimensional network tsim cov xwm txheej rau cov tawv hluavtaws kom tau txais cov tawv nqaij zoo li ntawm cov substrate. Cov khoom no, ua ke nrog cov tshiab tsim PU slurry impregnation nrog qhib cell qauv thiab cov txheej txheem txheej txheem ntawm composite deg txheej, exerts lub loj nto nto thiab muaj zog nqus dej ntawm microfiber, ua rau cov ultra-fine PU hluavtaws tawv muaj lub hauv paus chiv keeb ntawm noo noo nqus. Cov yam ntxwv ntawm cov tawv nqaij ntawm cov pob khoom ntawm ultra-fine collagen fiber, yog li tsis muaj teeb meem los ntawm cov microstructure sab hauv, Los yog cov tsos ntawm kev ntxhib los mos thiab cov yam ntxwv ntawm lub cev thiab tib neeg hnav kev nplij siab, tuaj yeem muab piv rau qib siab ntuj tawv. Tsis tas li ntawd, cov tawv hluavtaws microfiber tshaj li cov tawv tawv hauv cov tshuaj tiv thaiv, kev ua haujlwm zoo, kev tsim khoom loj thiab kev ua kom haum, tsis muaj dej, tiv thaiv kab mob thiab lwm yam.
Kev xyaum tau ua pov thawj tias cov khoom zoo heev ntawm cov tawv hluavtaws tsis tuaj yeem hloov tau los ntawm cov tawv nqaij, los ntawm kev tsom xam kev lag luam hauv tsev thiab txawv teb chaws, cov tawv hluavtaws kuj tau hloov ntau cov tawv nqaij nrog cov khoom siv tsis txaus. Kev siv cov tawv tawv thiab hluavtaws tawv los ua cov hnab, khaub ncaws, khau, tsheb thiab rooj tog kho kom zoo nkauj, tau txais kev lees paub los ntawm kev ua lag luam, nws cov kev siv ntau yam, cov khoom siv loj, ntau ntau yam, yog cov tsoos ntuj tawv tsis tuaj yeem. ntsib.
Lub sij hawm xa tuaj: Mar-29-2024