Nrog rau cov muaj npe ntawm cov neeg siv tsheb hauv tsev thiab kev siv tsheb yog qhov tseem ceeb tshaj plaws, kev noj qab haus huv thiab kev pom zoo tshaj plaws rau cov neeg siv khoom thaum tsav tsheb. Qee zaum, txawm tias qhov chaw nyob dav tsheb txaus, lub rooj noj mov zoo heev rau zaum "," Lub tsheb no yog qhov tsis zoo rau "
Qhov cuam tshuam uas cuam tshuam rau kev nplij siab ntawm lub rooj zaum suav nrog peb qhov: Cov qauv ua npuas ncauj, cov qauv ua npuas ncauj, cov qauv sib zog, cov qauv kev nplij siab tau siv ua cov khoom siv rov qab rau cov khoom siv tsheb rau xyoo. Polyurethane tau maj mam dhau los ua cov khoom siv tsis tau, thiab nws cov txiaj ntsig yog qhov tsis sib xws los ntawm lwm cov khoom.Yog li cas yog polyurethane?
Polyurethane (Polyurethane, PU), Tag Nrho Lub Npe Polyurethana, yog cov pab pawg dav dav rau cov pab pawg carbamate (}-) ntawm txoj saw tseem ceeb. Nws yog tsim los ntawm Polymerization ntawm Diisocyanates nrog Dihydroxy lossis polyhydroxy tebchaw. Polyurethane Macromolecules tseem muaj tus neeg coj kev nyab xeeb tseem muaj cov khoom siv hluav taws xob, cov khoom siv hluav taws xob loj tshaj plaws hauv ntiaj teb (PP, PVC, PS, PU). Nws yog cov khoom siv hluavtaws tsuas yog cov khoom siv hluav taws xob uas muaj cov ntawv thov tseem ceeb hauv lub teb uas muaj cov ntaub ntawv, roj hmab, cov khoom ua npuas, cov nplaum, thiab cov khoom siv polymer. Cov ntaub ntawv polymer.
Txij li cov pawg muaj nyob rau hauv polyurethane macromolecules yog tag nrho cov pawg polyether kuj muaj cov ntu, polyurethane muaj cov yam ntxwv hauv qab no:
(1) Cov cua sov zoo tiv: nws tuaj yeem siv rau lub sijhawm ntev ntawm cov kub uas tsis muaj kev ua tau zoo hloov.
(2) Cov khoom siv zoo heev: Polyurethane muaj lub zog siab thiab hardness, raws li qee yam elasticity thiab toughness, yog li nws tau siv dav hauv ntau thaj teb.
(3) Cov tshuaj corrosion zoo: nws tuaj yeem siv rau lub sijhawm ntev ntawm cov tub ceev xwm zoo li cov kua qaub, alkali, ntsev, thiab lwm yam.
(4) huab cua zoo tiv thaiv: Nws tuaj yeem siv rau lub sijhawm ntev hauv ib puag ncig ntuj xws li teeb pom kev loj hlob, oxygen, thiab dej.
(5) Cov Khoom Siv Rwb thaiv tsev zoo: Nws tuaj yeem siv rau hauv kev tsim cov khoom siv hluav taws xob, cov ntaub ntawv hluav taws xob thiab lwm cov ntaub ntawv rwb thaiv tsev.
(6) Cov hnav zoo tiv thaiv: nws tuaj yeem siv rau hauv cov chaw hnyav xws li muaj kev ruaj khov thiab kev nrawm nrawm.