Dab tsi yog polyurethane tdi, MDI, thiab NDI?
TDI, MDI, thiab NDI yog peb cov ntaub ntawv tseem ceeb ntawm polyurethane, uas muaj qhov sib txawv ntawm cov qauv tshuaj, kev ua tau zoo, thiab siv. Cov hauv qab no yog qhia luv luv rau peb cov ntaub ntawv no thiab kev sib piv ntawm lawv cov txiaj ntsig thiab qhov sib txawv, kev ua tau zoo, thiab tshuaj ntsuam xyuas tau zoo.
TDI (Toluene Diisocyanate) yog ib feem siv polyurethane raw khoom, tsuas yog siv hauv cov tsiaj muag muag, elastomers, cov xim, thiab lwm thaj teb. Cov qauv tshuaj ntawm TDI ua rau nws muaj cov kab mob ntxim nyiam thiab tuaj yeem hnov mob nrog polyols los ua polyurethane. Txawm li cas los xij, TDI muaj qee qhov tsis zoo thaum lub sijhawm kev tsim khoom thiab siv, xws li yellaum, tso cov roj lom, thiab kev rhuav tshem yooj yim ntawm qhov kub siab.
Polyurethane ua los ntawm TDI muaj qhov zoo elasticity thiab softness, thiab yog qhov haum rau kev ua npuas ncauj mos, elastomers, thiab lwm yam khoom lag luam. Vim nws cov siab reactivity, TDI yog me ntsis tsis txaus ntseeg ua kom muaj zog thiab muaj zog polyurethane khoom.
Tus nqi ntawm TDI raw cov ntaub ntawv yog qhov tsis tshua muaj, yog li tus nqi ntawm kev siv TDI los ua polyurethane yog qhov tsawg.
MDI (Diphenylmethane di ncauj diisocyanate) muaj cov kev cuam tshuam ntau dua thiab cov cua sov zoo dua li TDI. Polyurethane ua los ntawm MDI muaj lub zog siab, tawv thiab hnav tsis kam, thiab yog qhov tsim nyog rau ua kom nruj ua npuas, elastomers, cov nplaum thiab lwm yam khoom. Txawm li cas los xij, MDI tseem muaj qee qhov tsis zoo hauv kev tsim khoom thiab siv cov txheej txheem, xws li cov roj cryrystall yooj yim thiab tso roj lom.
Polyurethane ua los ntawm MDI muaj lub zog siab, hardness thiab hnav tsis kam, thiab yog qhov tsim nyog rau ua kom nruj ua npuas ncauj, elastomers thiab lwm yam khoom. Piv nrog TDI, polyurethane ua los ntawm MDI muaj tshav kub tsis kam thiab ntau dua kev cuam tshuam.
Tus nqi ntawm MDI raw cov ntaub ntawv yog qhov tseem ceeb, yog li tus nqi ntawm kev siv MDI los ua polyurethane yog tus siab.
NDI (Naphthalene Diisocyanate) yog hom tshiab ntawm polyurethane cov khoom siv raw nrog cov kub ua kom zoo thiab ua tau zoo heev. Polyurethane ua los ntawm NDI muaj lub zog zoo, tawv thiab muaj kev tsim nyog rau kev tsim cov tshuab tsim khoom lag luam xws li, thiab siv cov txheej txheem ntau thiab cov khoom siv siab thiab yooj yim thiab yooj yim.
Polyurethane ua los ntawm NDI muaj lub zog zoo, tawv thiab muaj zog rau kev tsim cov tshuab thiab MDI, Polyurethane ua los ntawm NDI muaj kev ruaj khov zoo dua thiab muaj zog dua.
Tus nqi ntawm NDI raw cov ntaub ntawv yog qhov tseem ceeb, yog li tus nqi siv NDI los ua polyurethane kuj tseem muaj siab. Txawm li cas los xij, nrog kev nce qib nruam ntawm cov tshuab ntau lawm thiab kev paub txog ntawm kev tsim khoom, tus nqi ntawm NDI yuav tsum tau txo qis.