Ntau tus neeg yuav khoom tshiab yuav muaj kev ntseeg siab xws li, yuav tsum xaiv polyether polyols lossis polyester polyols? Cia peb tham txog lawv qhov sib txawv thiab cov yam ntxwv niaj hnub no, kom cov neeg yuav khoom tuaj yeem xaiv raws li cov kev xav tau sib txawv.
Cov yam ntxwv ntawm Polyether Polyols thiab Polyester Polyols yog:
1. Cov yam ntxwv ntawm Polyether Polyols
Kev hloov pauv tau zoo thiab elasticity: muaj cov ntaub ntawv sib khi ua ua kom cov polyetethane ua tau zoo thiab muaj peev xwm rov qab zoo rau lawv cov qauv qub hauv qhov chaw muaj kev loj. Yog li ntawd, Polyether Polyurethanes feem ntau siv los npaj elastomers, mos npuaj plastics, cov khoom siv mos plastics thiab lwm yam khoom, xws li cov txaj txaj, rooj plaub hau, rooj plaub thiab lwm yam.
Zoo heev Hydrolysis Kuj: Polyether Polyols yog qhov ruaj khov rau cov dej thiab tsis muaj kev kub ntxhov rau cov dej hiav txwv ntxhov siab. Yog li ntawd, polyeters polyurethane khoom tseem tuaj yeem tswj kev ua tau zoo hauv lub neej muaj kev pab ntau. Qhov no ua rau nws dav siv nyob rau hauv kev tsim kho, automotive interiors thiab lwm daim teb.
Txo cov cua kub hloov (TG) Lawv tseem tuaj yeem tswj tau zoo thiab elasticity hauv qis-} qhov chaw ib puag ncig thiab tsis yooj yim los ua nkig.
Cov kub tsis zoo thiab hnav tsis kam: piv nrog polyester polyols, polyetic polyurethanes muaj cov khoom siv kub tsis zoo, muaj feem xyuam rau cov khoom kub siab, thiab tau txo cov khoom siv tshuab hluav taws xob. At the same time, its wear resistance is relatively weak, and it is not suitable for long-term use in environments with high friction.
2. Cov yam ntxwv ntawm Polyester Polyols
Lub zog siab dua thiab Hardness: Muaj cov pab pawg ester muab polyterethane cov ntaub ntawv ua los ntawm polyester polyols siab dua lub zog thiab hardness. Nws lub zog tensile, rhuav lub zog thiab lwm yam khoom siv mechanical zoo dua li polyether polyurethanes. Yog li ntawd, polyester polyurethanes feem ntau siv los npaj ua npuas ncauj ua npuas plastics, txheej, cov khoom nplaum thiab lwm yam khoom lag luam, xws li cov txheej txheem tsheb, thiab lwm yam.
Cov cua sov zoo ua hauj lwm thiab cov khoom lag luam tiv thaiv: polyurethane cov ntaub ntawv ua los ntawm polyester polyols muaj cov cua sov zoo thiab tseem tuaj yeem tswj cov khoom siv zoo thaum muaj cov cua txias. Nyob rau tib lub sijhawm, nws cov hnav tsis kam tseem zoo dua li polyetet polyurethane, thiab nws tuaj yeem siv rau lub sijhawm ntev nrog kev sib txhuam siab siab.
Cov pab cuam tsis zoo ntawm hydrolysis tsis zoo: Cov pab pawg ESTERER tau nquag nrog cov dej hauv polyterethane ua los ntawm polyester polyols hauv ib puag ncig huab cua thiab ib lub neej luv luv. Txawm li cas los xij, nws cov hydrolysis ua tau tuaj yeem txhim kho rau qee yam los ntawm kev ntxiv anti- hydrolysis sawv cev thiab lwm txoj kev.
Tus nqi siab: Vim yog tus nqi siab ntawm polyester polyols, tus nqi ntawm polyurethane cov khoom lag luam ua los ntawm lawv {{0} {} {rhiab.