Dab tsi yog cov aliphatic isocyanates 1?
Nyob rau hauv qhov dav teb ntawm cov tshuaj lom neeg niaj hnub ua si ib lub luag haujlwm tseem ceeb thoob plaws ntau cov haujlwm vim lawv cov qauv tshuaj tshwj xeeb thiab ua tau zoo. Los ntawm high - Kev ua tau zoo tshaj plaws rau cov khoom lag luam zoo nkauj thiab tau ua cov tsav tsheb tseem ceeb rau kev nce qib thev naus laus zis thiab kev lag luam muaj kev lag luam hauv cov teb no.
Aliphatic Isocyanates xa mus rau cov tebchaw hauv cov pab pawg ownocyanate ({}} NCOcicaton saw. Piv nrog cov muaj ntxhiab isocyanates, lawv cov qauv sib txawv uas cuam tshuam ntau yam. Ua ntej, Aliphatic Isochyanates nthuav qhia huab cua tsis kam. Thaum raug rau lub sijhawm ntev ntev tshav ntuj, nag, thiab pleev xim thiab cov duab ci thiab pleev xim ua rau muaj kev daj loj, ploj mus, thiab laus. Qhov no ua rau lawv tsis tseem ceeb nyob rau sab nraum zoov kev tiv thaiv thiab cov kev siv hniav zoo nkauj, qhov chaw uas lawv tuaj yeem tswj tau cov tsos zoo thiab kev ua tau zoo dhau sijhawm.
Thib ob, aliphatic isocyanates muaj kev kub ntxhov siab. Lawv tuaj yeem nrawm nrawm nrog lwm cov hydrogen -} muaj cov kab sib txuas los ua cov khoom sib txuas lus muaj zog. Qhov siab reassivity muab lawv cov txiaj ntsig tshwj xeeb hauv kev sib txuas siab siab -}} Cov ntaub ntawv polymer. Piv txwv li, nyob rau hauv kev npajpolyurethane elastomers, aliphatic oocyanates hnov mob nrog polyols los tsim cov polymers los tsim cov polymers nrog lub siab elastic nrog kev ua yeeb yam zoo, thiab tshuaj lom neeg zoo. Cov ntaub ntawv no tau siv dav siv hauv cov log tsheb, cov siv tawv, ntsaws ruaj ruaj, thiab lwm yam kev thov uas xav tau.
Ntxiv mus, aliphatic oocyanates yog tsiag ntawv los ntawm cov tshuaj lom tsawg, tshaj tsawg txoj kev pheej hmoo rau ib puag ncig thiab tib neeg kev noj qab haus huv. Qhov no ua rau lawv haum rau lawv cov kev siv uas ib puag ncig thiab kev nyab xeeb yog cov tawv nqaij, xws li ntim khoom noj khoom haus thiab cov khoom noj. Piv nrog tsoos aromatic isocyanates, aliphatic isocyanates zoo dua li sib txawv nrog cov ntsiab cai ntawm Green Chemistry thiab kev txhim kho kom loj hlob.
Nyob rau hauv lub tshav pob ntawm siab - Kev ua tiav cov txheej txheem, aliphatic isocyanates yog qhov tseem ceeb cov khoom siv rau kev tsim cov siab thiab cov txheej txheem acrylic polyurethane txheej. Cov txheej txheem no tsis tsuas yog muab cov khoom ua kom zoo dua, thiab cov duab ua kom muaj zog thiab kho kom zoo nkauj rau obstrumic thiab tsis {4 4}} nws yog xim hlau. Piv txwv li, nyob rau hauv kev lag luam hauv tsheb, aliphatic isocyanate- Ua tau siv cov txheej txheem UV, acid siv zog ua haujlwm, thiab kev ua kom zoo nkauj lub neej.