Qhov txawv ntawm PU tawv thiab PVC tawv
Cov neeg feem coob yuav xa cov tawv hluavtaws uas tsis yog tawv, xws li PVC thiab PU tawv, raws li tawv tawv lossis tawv tawv. PVC thiab PU yog cov polyvinyl chloride (ib hom yas), tab sis kev tsim cov khoom ntawm ob yam khoom no tsis zoo li qub.
Hauv cov txheej txheem tsim, cov tawv nqaij PVC yog thawj zaug rau hauv qhov muab tshuaj los ntawm kub yaj, thiab uniformly coated rau puag ntawm T / C knitted ntaub raws li daim ntawv pov thawj, thiab tom qab ntawd foamed hauv foaming rau kom ua taus. Tsim ntau yam khoom, sib txawv ntawm cov khoom softness, qhov kev kho rau saum npoo tib lub sij hawm tso (dyeing, embossing, polishing, matting, sib tsoo thiab raising, thiab lwm yam, feem ntau raws li cov khoom tshwj xeeb).
PU tawv yog teeb meem ntau dua hauv kev tsim khoom dua PVC tawv. Txij thaum lub hauv paus ntaub ntawm PU yog ib hom khoom siv taum nrog tensile lub zog, ntxiv rau qhov muab lo rau saum cov ntaub ntawm lub hauv paus ntaub, lub hauv paus ntaub yuav muaj nyob hauv nruab nrab kom nws cov tsos tsis pom muaj cov ntaub . Lub cev nqaij tawv ntawm PU tawv zoo tshaj cov tawv PVC. Nws yog resistant rau tortuosity, softness, tensile zog thiab roj permeability (tsis muaj PVC). Cov qauv ntawm PVC tawv yog tsim los ntawm kub nias ntawm ib tug qauv qauv yob; tus qauv ntawm cov tawv nqaij PU yog nyob rau ntawm daim tawv nqaij ntawm daim tawv nqaij tas nrog daim qauv ntawv, thiab daim tawv nqaij sib cais tom qab tos kom txias, thiab saum npoo tsim. kam nrog. Tus nqi ntawm PU tawv yog ntau tshaj ob npaug ntawm cov tawv PVC. Tus nqi ntawm PU tawv nrog cov kev cai tshwj xeeb yog 2-3 zaug siab tshaj qhov ntawm cov tawv PVC. Feem ntau, daim qauv ntawv uas yuav tsum tau rau PU tawv tsuas yog khawb tseg 4-5 zaug; kev siv lub sij hawm ntawm cov qauv rau cov menyuam yog ntev, yog li tus nqi ntawm cov tawv nqaij PU yog siab tshaj qhov ntawm PVC tawv.
Nws kuj muaj qee qhov sib txawv hauv qhov uas muaj ntawm daim ntawv thov ntawm cov khoom ob. Nyob rau hauv cov nqe lus ntawm cov khau, PVC tawv yog feem ntau siv hauv ob sab los yog tsis hnyav hnyav, lossis hauv qhov chaw ua me nyuam cov khau; PU tawv tuaj yeem siv rau ntawm daim ntaub ntawm lub khawm los yog ib feem ntawm qhov nyhav. Nyob rau hauv cov nqe lus ntawm lub hnab, PVC tawv yog ntau haum. Qhov no yog vim hais tias cov khoom nyob hauv lub hnab ntim txawv ntawm taw ko taw hauv nkawm khau, thiab tsis dissipate heat; tsis txhob dais qhov nyhav ntawm tus neeg.
Qhov sib txawv ntawm PU thiab PVC kuj yoojyim. Los ntawm cov ces kaum, lub hauv paus ntaub ntawm PU yog cov thicker dua PVC, thiab txhais tes xav tias nws tseem txawv. Kev xav ntawm PU yog softer; kev xav ntawm PVC yog qhov nyuaj; nws tuaj yeem raug kub hnyiab nrog hluav taws, PU Lub saj tseem ceeb dua li lub saj ntawm PVC.