KEV PAB CUAM POLYURETHANE RUBber
Cov cai (UR) yog ib qho polymerization ntawm polyester (los yog polyether) thiab ib tug diisocyanate compound. Nws cov qauv tshuaj yog complex dua li cov elastic polymers. Ntxiv nrog rau cov pab pawg urethane rov tshwm sim, cov saw molecular feem ntau kuj muaj ester pawg, ether pawg, pawg muaj ntxhiab thiab lwm yam.
Cov saw tseem ceeb ntawm UR molecule muaj ib ntu hloov tau thiab ntu ntu; Cov ntu hloov tau kuj hu ua ntu mos thiab yog tsim los ntawm oligomer polyol (xws li polyester, polyether, polybutadiene, thiab lwm yam); Cov ntu nyuaj yog hu ua cov khoom siv tshuaj tiv thaiv ntawm diisocyanate (xws li TDI, MDI, thiab lwm yam) thiab cov saw hlau me me (xws li diamine thiab glycol). Mos ntu suav rau ntau tshaj qhov nyuaj. Lub hardness ntawm cov mos thiab tawv ntu yog txawv. Cov ntu nyuaj yog ntau dua polar thiab yooj yim los sib sau ua ke. Feem ntau cov micro-sections yog tsim nyob rau hauv lub mos ntu ntu, uas yog hu ua micro-phase cais qauv. Nws lub cev thiab txhua yam khoom thiab micro-theem Lub degree ntawm kev sib cais muaj ntau yam ua rau nws.
Cov saw tseem ceeb ntawm UR molecule muaj lub zog siab thiab siab elasticity vim muaj kev cuam tshuam ntawm hydrogen bonds.
Cov yam ntxwv: Nws muaj qhov zoo ntawm kev ua haujlwm siab, lub zog zoo, siab elasticity, siab hnav tsis kam, tsim kua muag tsis kam, kev laus ua haujlwm, ozone tsis kam, hluav taws xob tiv thaiv thiab hluav taws xob zoo. Nws yog unmatched los ntawm cov roj hmab zoo tib yam.
Post lub sij hawm: Sep-02-2019