Hom Artificial Leather

Raws li kev faib tawm ntawm cov khoom siv hluavtaws siv, tawv tawv feem ntau muab faib ua:

Thawj yog PVC (polyvinyl chloride). Cov khoom tom qab combustion muaj xws li dej, carbon dioxide, thiab chlorine-muaj compounds, thiab txawm chlorine gas; nws yog ib qho kev sib xyaw ntawm polyvinyl chloride resin, plasticizers thiab lwm yam tshuaj sib xyaw ua ke. Nws yog cov khoom siv wavy uas tau npog lossis txuas nrog cov ntaub los ntawm kev ua haujlwm qee yam. Tsis tas li ntawd, kuj tseem muaj ob sab polyvinyl chloride hluavtaws tawv nrog cov txheej yas ntawm ob sab ntawm lub substrate.

Qhov thib ob yog PE (polyethylene), uas theoretically tsuas yog tsim dej thiab carbon dioxide tom qab nws tag nrho hlawv.

Qhov thib peb thiab feem ntau yog ib qhoPU tawv(polyurethane). Cov khoom tom qab tag nrho combustion muaj xws li dej, carbon dioxide, nitrogen, thiab ib tug me me ntawm nitrogen-muaj compounds. Polyurethane tawv tawv yog muab faib ua cov txheej txheem qhuav polyurethane tawv tawv thiab ntub txheej txheej polyurethane tawv tawv. Lub thiaj li hu ua qhuav-txheej txheej polyurethane tawv tawv yog hais txog ib tug multilayer qauv tsim los ntawm evaporating cov hnyav ntawm cov kuab tshuaj raws li polyurethane resin tov thiab ntxiv ib lub hauv paus ntaub rau multilayer zaj duab xis tau. Cov txheej txheem ntub dej polyurethane tawv tawv yog cov txheej txheem ntau txheej nrog cov huab cua zoo permeability thiab noo noo permeability, thiab ib txheej ntxeem tau txuas ntxiv, uas tau txais los ntawm kev siv cov kuab tshuaj raws li polyurethane resin thiab cov txheej txheem hauv qab dej.

Vim yog cov khoom siv hluavtaws sib txawv siv hauv cov tawv tawv, ntau hom substrates, cov txheej txheem ntau lawm, txawm tias muaj foaming thiab siv sib txawv, cov tawv tawv tuaj yeem muab faib ua ntau hom. Cov tawv tawv yog tam sim no cais raws li cov khoom siv hluavtaws siv, cov txheej txheem tsim khoom thiab lub hom phiaj.