Polyurethane mos ua npuas ncauj series cov khoom lag luam feem ntau suav nrog thaiv, txuas ntxiv, daim txhuam cev, ua npuas ncauj siab (HR), ua npuas ncauj rau tus kheej, ua npuas ncauj qeeb, ua npuas ncauj microporous thiab ib nrab lub zog-absorbing ua npuas ncauj.Hom npuas no tseem suav txog li 50% ntawm tag nrho cov khoom polyurethane.Muaj ntau yam khoom lag luam thiab cov peev txheej ntawm daim ntawv thov txuas ntxiv mus tas li, thiab lawv tau koom nrog ntau yam kev lag luam hauv lub tebchaws: khoom siv hauv tsev, tsheb, txhim kho tsev, rooj tog zaum, tsheb ciav hlau, nkoj, aerospace thiab ntau lwm yam.Txij li thaum lub advent ntawm PU mos ua npuas ncauj nyob rau hauv lub 1950s, tshwj xeeb tshaj yog tom qab nkag mus rau hauv lub xyoo pua 21st, technology, ntau yam, thiab cov khoom tsim tawm tau tag nrho cov leaps.Cov ntsiab lus tseem ceeb suav nrog: ib puag ncig tus phooj ywg PU mos ua npuas ncauj, uas yog cov khoom siv polyurethane ntsuab;Tsawg VOC tus nqi PU mos ua npuas ncauj;tsawg atomization PU mos ua npuas ncauj;dej puv PU ua npuas ncauj;tag nrho MDI series mos ua npuas ncauj;nplaim retardant, tsis muaj pa luam yeeb, puv MDI series ua npuas ncauj;Tshiab additives xws li reactive polymer catalysts, stabilizers, nplaim retardants thiab antioxidants;polyols nrog tsawg unsaturation thiab tsawg monoalcohol ntsiab lus;ultra-low density PU hloov tau ua npuas ncauj nrog lub cev zoo heev;tsawg resonance zaus, Tsawg-hloov PU ua npuas ncauj;polycarbonate diol, polyε-caprolactone polyol, polybutadiene diol, polytetrahydrofuran thiab lwm yam polyols tshwj xeeb;kua CO2 foaming tshuab, tsis zoo siab foaming tshuab, thiab lwm yam. Nyob rau hauv luv luv, qhov tshwm sim ntawm tshiab ntau yam thiab tshiab technologies tau txhawb txoj kev loj hlob ntxiv ntawm PU soft foam.
Foaming txoj cai
Txhawm rau ua kom zoo tshaj plaws PU ua npuas ncauj ua npuas ncauj uas ua tau raws li qhov yuav tsum tau ua, nws yog ib qho tsim nyog yuav tsum nkag siab txog cov txheej txheem tshuaj lom neeg ntawm cov npuas dej txhawm rau xaiv cov khoom tsim nyog thiab cov khoom siv raw thiab cov txheej txheem tsim khoom.Txoj kev loj hlob ntawm polyurethane kev lag luam tsis yog ib theem imitation lawm, tab sis twb paub lawm los ntawm cov raw khoom qauv thiab synthesis txheej txheem raws li kev ua tau zoo ntawm cov khoom kawg.Polyurethane ua npuas ncauj koom nrog cov tshuaj hloov pauv thaum lub sij hawm tsim cov txheej txheem, thiab cov yam ntxwv cuam tshuam rau cov yam ntxwv ntawm cov npuas dej yog qhov nyuaj, tsis yog tsuas yog cuam tshuam cov tshuaj tiv thaiv ntawm isocyanate, polyether (ester) cawv thiab dej, tab sis kuj yog colloid chemistry ntawm foaming.Cov tshuaj tiv thaiv muaj xws li saw txuas ntxiv, foaming thiab cross-linked.Nws kuj cuam tshuam rau cov qauv, kev ua haujlwm thiab qhov hnyav molecular ntawm cov tshuaj koom nrog hauv cov tshuaj tiv thaiv.Cov tshuaj tiv thaiv dav dav rau kev sib txuas ntawm polyurethane ua npuas ncauj tuaj yeem qhia los ntawm cov qauv hauv qab no:
Post lub sij hawm: Sep-06-2022