MDI tuaj yeem faib ua peb hom khoom: polymerized MDI, MDI ntshiab thiab hloov kho MDI. Polymerized mdi tsuas yog tsim polyurethane rigid ua npuas ncauj thiab semi-} rigid cov khoom lag luam npuas; Ntshiab MDI feem ntau yog siv los tsim ntau hom polyurethane elastomers.
Hloov MDI yog ib qho kev ua kom pom tseeb ntawm MDI thiab polymerized MDI cov khoom lag luam. Raws li cov kev xav tau ntawm cov qauv hauv Downstream sib txawv, cov qauv khoom lag luam thiab cov txheej txheem hluav taws xob tuaj yeem hloov kho thiab tsim qauv. Tam sim no, hloov kho MDI tau hloov kho uas tau tsim tawm ntawm cov nplai loj yog feem ntau:
(1) Cov kev kho mob carbonized kho, kuj hu ua cov pa roj carbon monoxide, muaj cov pa roj carbon monoxide Cov khoom yog rau cov koob no yog WANHUA 100LL, BASF MM103C, Huntsman 2020.
(2) Polyol kev hloov kho, tseem hu ua kev hloov kho carbamate, yog MDI prepomer tsim feem ntau los ntawm cov tshuaj tiv thaiv ntawm polyols nrog 4,4-MDI thiab 2,4-MDI.
(3) sib xyaw ua ke, uas yog tsim los ntawm kev sib xyaw ntawm cov MDI hauv qee qhov kev faib ua feem. Piv txwv li, MDI-50 yog tsim ntawm 4,4-MDI thiab 2,4-MDI sib xyaw hauv qhov sib piv ntawm 50% txhua.
Hloov kho MDI - Hais txog kev ua tau zoo, cov khoom muaj ntxhiab tsw qab, ntau dua cov nplaim hluav taws xob, thiab cov nplaim hluavtaws zoo dua; Hais txog kev cia, hloov kho MDI muaj qhov kub thiab txias tsis yooj yim, tsis yooj yim rau kev quaj, thiab yooj yim dua rau kev thauj mus los.
Piv nrog TM system (sib xyaw ntawm TDI thiab polymerized MDI), cov xim dub / dawb ntawm hloov kho MDI yog siab dua, thiab cov khoom siv tau nce nrog tus nqi hloov.
Cov Neeg Siv Khoom Siv Hauv Qab Ntuj ntawm cov khoom lag luam ntshiab MDI yog cov khoom siv dawb, kho kom zoo nkauj sab hauv thiab sab nrauv tsev sab hauv; Cov nqes dej hauv qab ntawm MDI yog feem ntau yog rau kev tsim cov TPU, Spandex, pu slurry thiab ib leeg kua.
Hauv cov neeg siv khoom hauv nroog ntawm kev lag luam MDI, 65% yog siv hauv kev tsim khoom, 15% yog siv hauv kev tsim khoom, thiab 10% yog siv nyob rau hauv cov nplaum thiab cov xov xwm.