1.Rubber rauj yog ib lub rauj yog cov khoom siv roj hmab elastic, feem ntau tuav qee qhov chaw tsis yooj yim thiab nruab cov vuas hauv pem teb, iav thiab lwm yam los ua lub luag haujlwm tsis zoo.
2.Siv thiab hom roj hmab rauj lub cev tu siv ntau yam kev qhia tshwj xeeb thiab cov qauv ntawm cov ntawv hlau rauj, feem rau kev kho cov hlau thiab cov khoom siv ntxhib, ua tiav thiab cov hom phiaj tshwj xeeb.
3.Cov roj hmab rauj yog ua los ntawm polyurethane roj hmab. Polyurethane roj hmab yog cov khoom siv elastomer uas muaj ntau pawg carbamate ntawm cov saw tseem ceeb ntawm polymerization. Nws yog polyurethane roj hmab, hu ua polyurethane roj hmab los yog polyurethane roj hmab los yog polyurethane elastomer. Ntxiv nrog rau muaj pawg carbamate, cov saw hlau polymer kuj tseem muaj ester pawg, ether pawg, pawg urea, pawg aryl thiab aliphatic chains. Nws feem ntau yog tsim los ntawm cov tshuaj tiv thaiv ntawm oligomer polyols, polyisocyanates thiab saw extenders. Polyurethane roj hmab nrog kev siv cov khoom siv raw thiab qhov sib piv, cov tshuaj tiv thaiv hom thiab cov xwm txheej, tsim cov qauv sib txawv thiab ntau yam.
