Lub npe tag nrho ntawm polyurethane yog polyurethane, uas yog cov lus dav dav rau macromolecular tebchaw nrog rov ua carbamate pawg (NHCOO) ntawm cov saw tseem ceeb. Nws yog tsim los ntawm kev ntxiv polymerization ntawm organic diisocyanate lossis polyisocyanate thiab dihydroxy lossis polyhydroxy compound.
Polyurethane yog siv dav. Raws li cov khoom siv uas muaj ntau yam, nws khiav thoob plaws txhua cheeb tsam ntawm lub teb chaws lub neej. Siv tau los ua cov yas, roj hmab, fiber, ua npuas yas (mos mos ua npuas yas yog siv rau cov rooj tog thiab ntau cov ntaub ntawv cushion, cov ntaub ntawv rwb thaiv tsev, thiab lwm yam.; Ua npuas ua npuas yas yog siv rau cov khoom vaj khoom tsev kub txheej txheej, rwb thaiv tsev phab ntsa. thiab dej ua npuas dej txau, Cov khoom siv rwb thaiv tsev, cov rooj zaum ua lub tub yees, cov tsheb tub yees thiab cov khoom siv txias ua haujlwm rwb thaiv tsev, thiab lwm yam.; ib nrab txhav ua npuas dej plastics yog siv rau hauv cov ntawv tsav tsheb, lub kauj tsheb, thiab lwm yam), cov nplaum (siv hauv ntim, siv, ntoo , kho tsheb, khau thiab lwm yam kev lag luam), Polyurethane biomedical kev nyab xeeb cov khoom siv: siv hauv kev tsim cov khoom ua kom lub plawv dhia, cov hlab ntsha tsim, cov leeg pob txha, dag leeg ua pa, lub raum cuav, lim ntshav cuav, thiab lwm yam khoom siv Polyurethane kub rwb thaiv tsev thiab cov khoom cua sov rwb thaiv tsev: tau dhau los ua qhov kev xaiv thib ib rau cov khoom lag luam sab nrauv phab ntsa rwb thaiv tsev Nws tseem siv hauv peb cov khoom siv niaj hnub xws li i nsulation txheej ntawm cov tub yees, cua txias, thiab lwm yam thiab cov khoom tseem ceeb ntawm cov nthwv dej, thiab lub ru tsev ntawm cov tsheb thauj mus los, cov dav hlau, thiab cov tsheb ciav hlau.
Polyurethane pem teb tiag tiag yog hais txog PVC pem teb, uas tau kho nrog polyurethane hnav-resistant txheej nyob rau saum npoo ntawm PVC pem teb. Polyurethane elastomer tau zoo tensile lub zog, tsim kua muag, muaj kev cuam tshuam, abrasion tsis kam, huab cua tsis kam, hydrolysis tsis kam, roj tsis kam, thiab lwm yam. PVC pem teb yog kev siv cov khoom ua kom sov polyurethane. Cov khoom lag luam tuaj txawv teb chaws European (xws li Deca) feem ntau nqa tawm cov khoom tiav kawg ntawm cov khoom ua ntej tawm hauv lub Hoobkas, uas yog ua cov txheej txheem polyurethane ntawm cov txheej coj-tiv taus los ntawm kev siv tshuab. Nov yog PUR saum npoo kev kho mob (piv txwv li, kev kho mob polyurethane txheej kho) hauv kev lag luam. ), nws txoj haujlwm yog sau lub qhov hws saum npoo, txhim kho lub suab zoo, tiv thaiv suab nrov, thermal conductivity, cuam tshuam tsis kam, tsis plam, nplaim hluav taws thiab tsis kam noo, tiv thaiv kab mob, acid thiab alkali tsis kam, stain tsis kam, tsis kam thiab lwm yam khoom PVC pem teb.