NDI (naphthalene diisocyanate) yog ib hom tshiab ntawm polyurethane raw khoom nrog siab reactivity thiab zoo heev kub kuj. Polyurethane ua los ntawm NDI muaj lub zog zoo heev, hardness thiab hnav tsis kam, thiab yog tsim rau kev ua haujlwm siab polyurethane cov khoom xws li engineering plastics, tshwj xeeb elastomers, thiab lwm yam. Txawm li cas los xij, NDI kuj muaj qee qhov tsis zoo hauv kev tsim thiab siv cov txheej txheem, xws li siab. tus nqi ntau lawm thiab yooj yim crystallization.
Kev ua tau zoo sib txawv: Polyurethane ua los ntawm NDI muaj lub zog zoo heev, hardness thiab hnav tsis kam, thiab yog tsim rau kev ua haujlwm siab polyurethane cov khoom xws li engineering yas, tshwj xeeb elastomers, thiab lwm yam. Piv nrog TDI thiab MDI, polyurethane ua los ntawm NDI muaj kev kub siab dua thiab zoo dua dimension stability.
Tus nqi: Tus nqi ntawm NDI raw cov ntaub ntawv yog qhov siab, yog li tus nqi ntawm kev ua polyurethane siv NDI kuj tseem siab. Txawm li cas los xij, nrog kev nce qib ntawm cov thev naus laus zis ntau lawm thiab maj mam ua tiav ntawm kev tsim khoom lag luam, tus nqi ntawm NDI yuav tsum maj mam txo.
Peb cov ntaub ntawv polyurethane raw khoom ntawm TDI, MDI thiab NDI muaj qhov sib txawv ntawm cov qauv tshuaj, kev ua haujlwm thiab kev siv. Ntawm lawv, TDI muaj zoo elasticity thiab softness, thiab yog haum rau ua npuas ncauj mos, elastomers thiab lwm yam khoom; MDI muaj lub zog siab, hardness thiab hnav tsis kam, thiab yog tsim rau ua npuas ncauj tawv, elastomers thiab lwm yam khoom; NDI muaj lub zog zoo heev, hardness thiab hnav tsis kam, thiab tsim nyog rau kev ua cov khoom ua tau zoo polyurethane, xws li engineering plastics, tshwj xeeb elastomers, thiab lwm yam.