YPolyurethane vs Urethane
Cov lus polyurethane thiab urethane yog qhov tsis meej pem thiab tib neeg tsis tuaj yeem ua qhov sib txawv ntawm ob. Txawm hais tias muaj ntau qhov sib xws thiab feem ntau ob yog siv rau cov laj thawj zoo sib xws, urethane thiab polyurethane yog ob yam khoom sib txawv uas muaj cov khoom sib txawv thiab cov yam ntxwv. Tib neeg feem ntau siv ob lo lus yuav luag sib hloov, uas tsis yog. Kab lus no yuav tshem tawm txhua qhov kev tsis ntseeg txog qhov sib txawv ntawm ob qho tib si kom tib neeg xaiv ib qho ntawm lwm tus rau lawv cov kev xav tau.
Urethanes thiab polyurethanes yog cov tshuaj uas siv rau hauv kev tsim khoom ntawm ntau theem ntawm kev tsim khoom los txhim kho lub cev ntawm cov khoom thiab ua kom nws zoo dua thiab siv tau ntev dua. Urethane yog ib hom carbonic acid ua los ntawm crystalline ethyl ester. Raws li ib qho tshuaj, urethane feem ntau yog siv los tsim cov xim, cov kuab tshuaj, tshuaj tua kab thiab ntau yam khoom siv tshuaj. Polyurethane ntawm qhov tod tes yog ib qho polymer (PU), uas tib neeg xav tias yog urethane, thiab feem ntau yog siv rau hauv kev tsim cov ntsaws ruaj ruaj, gaskets, khau khau, yooj yim foams, log tsheb, rooj zaum, adhesives, fibers thiab ntau hom yas. Ob leeg pom kev siv ntau txhiab ntawm cov khoom lag luam thiab khwv tau ntau lab nyiaj tau los txhua xyoo. Koj puas tau xav paub dab tsi yog lub qe ua npuas ncauj ua los ntawm? Nws yog ib qho urethane uas ua rau cov qe muaj kev nyab xeeb thaum lawv thauj los ntawm ib qho chaw mus rau lwm qhov.
Y Urethane yog cov tshuaj sib xyaw ua ke los ntawm ethyl ester nrog cov tshuaj formula C3H7NO2. Polyurethane, raws li lub npe txhais tau tias yog tsim los ntawm kev sib txuas lossis koom nrog ntau lub urethane ua ke. Cov txheej txheem tshuaj ntawm kev koom nrog cov chav no yog hu ua polymerization. Thaum urethane yog mos thiab hloov tau, polyurethane yog nruj thiab ruaj. Urethane tuaj yeem siv tau ntau yam duab thiab cov ntaub ntawv thiab pom muaj nyob rau hauv cov kua hauv lub xeev thaum polyurethane yog tsim los ua cov khoom nyuaj xws li PU soles, gaskets thiab seals. Raws li cov khoom lag luam, polyurethane muaj ntau yam zoo dua li cov roj hmab ntuj. Nws kuj tseem siv los ua cov kuab tshuaj hauv cov xim rau cov txheej txheem ntau dua. Ntawm qhov tod tes, urethane yog siv rau hauv tshuaj tua kab, tshuaj tua kab thiab tshuaj tua tsiaj.
Urethane yog tshuaj lom rau cov tsiaj me xws li nas thiab ua rau muaj kev tsis haum rau tib neeg yog tias nws muaj nyob rau hauv cov tshuaj. Polyurethane muaj qis toxicity. Lub hom phiaj tseem ceeb ntawm urethanes thiab polyurethanes yog los pab ua cov khoom uas muaj zog thiab ruaj khov dua li lawv cov khoom siv yooj yim.
Qhov txawv ntawm Polyurethane thiab Urethane
• Urethane thiab polyurethane yog cov khoom siv dav siv thoob plaws ntiaj teb los ua cov khoom zoo thiab ruaj khov.
• Thaum urethane hloov tau thiab muag, pom nyob rau hauv cov ntaub ntawv ua kua, polyurethane yog siv los ua cov khoom tawv thiab firmer uas kav ntev
• Polyurethane, raws li lub npe cuam tshuam los ntawm kev txuas ntau cov urethanes ua ke los ntawm cov txheej txheem hu ua polymerization.
• Urethane muaj toxicity siab thaum polyurethanes muaj toxicity tsawg.
