Hom Faux Tawv

Artificial tawv feem ntau muab faib ua pawg hauv qab no raws li cov khoom siv hluavtaws siv:

Thawj yog PVC (polyvinyl chloride), uas tsim cov dej, carbon dioxide thiab cov tshuaj chlorine-muaj cov tshuaj tom qab combustion, thiab txawm tias cov roj chlorine;

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

Qhov thib peb, thiab feem ntau, yog hu ua PU tawv (polyurethane), thiab nws cov khoom siv hluav taws xob tag nrho suav nrog: dej, carbon dioxide, nitrogen, thiab ib qho me me ntawm nitrogen-muaj cov tebchaw.

Vim yog cov khoom siv hluavtaws sib txawv siv hauv cov tawv nqaij, ntau hom substrates, ntau txoj kev sib txawv, foaming thiab siv sib txawv, cov tawv tawv tuaj yeem muab faib ua ntau hom. Tam sim no cov tawv tawv yog cais raws li cov khoom siv hluavtaws siv, cov txheej txheem tsim khoom thiab siv.

1. PVC tawv tawv

Nws yog ib qho kev sib xyaw ntawm polyvinyl chloride resin, hom yas thiab lwm cov tshuaj sib xyaw ua ke, coated lossis laminated ntawm cov ntaub, thiab ua los ntawm cov txheej txheem ua haujlwm. Tsis tas li ntawd, muaj ob sab PVC tawv tawv nrog ib txheej yas ntawm ob sab ntawm substrate.

2. Polyamide tawv tawv

Nws yog cov khoom siv yas nrog cov qauv ntawm tes txuas ntxiv ua los ntawm cov txheej txheem ntawm nylon 6 lossis nylon 66 tshuaj maj mam coated ntawm cov ntaub thiab zaj duab xis.

3. Polyolefin khoom tawv tawv

Polyethylene tawv tawv yog ib hom ua npuas ncauj tawv tawv, uas yog ua los ntawm cov khoom siv tsis tshua muaj polyethylene ua cov khoom siv tseem ceeb, sib xyaw nrog cov hloov pauv, tus neeg sawv cev sib txuas, cov roj nplua nyeem, tus neeg sawv cev foaming thiab lwm yam khoom.

4. Polyurethane tawv tawv

Polyurethane tawv tawv ntxiv tau muab faib ua cov tawv nqaij qhuav polyurethane tawv thiab ntub polyurethane tawv tawv. Qhov hu ua qhuav polyurethane tawv tawv yog hais txog cov txheej txheem ntau txheej uas tsim los ntawm ntau txheej zaj duab xis thiab cov ntaub hauv paus tom qab cov kuab tshuaj yog volatilized los ntawm cov kuab tshuaj raws li polyurethane resin. Cov tawv nqaij ntub dej polyurethane yog cov txheej txheem ntau txheej nrog cov huab cua zoo permeability thiab noo noo permeability, thiab ib txheej ntxeem tau los ntawm kev siv cov kuab tshuaj-raws li polyurethane resin thiab dej zaj duab xis-tsim txoj kev.