Sucrose raws li polyether polyol yog dab tsi?
Sucrose-based polyether polyol yog polyol npaj los ntawm cov tshuaj tiv thaiv ntawm sucrose nrog epoxy tebchaw xws li propylene oxide (los yog ethylene oxide).Nws cov qauv molecular muaj ntau pawg hydroxyl (-OH), uas muab cov chaw ua haujlwm rau cov tshuaj tiv thaiv polyurethane tom ntej.
Sucrose-based polyether polyols tau siv dav hauv kev tsim cov khoom siv polyurethane vim lawv cov qauv molecular tshwj xeeb, siab viscosity, kev ua haujlwm siab thiab rigidity.
Sucrose raws li polyether polyol muaj ntau yam nta:
1.High functional degree: Cov qauv molecular ntawm sucrose-based polyether polyols muaj ntau pawg hydroxyl, uas ua rau lawv muaj kev ua haujlwm siab, uas tuaj yeem ua rau muaj qhov sib txawv ntawm qhov sib txawv hauv polyurethane synthesis.
2. Cov khoom siv tshuaj lom neeg zoo thiab lub cev muaj zog: Vim yog kev qhia txog sucrose molecules, cov ntaub ntawv polyurethane ua los ntawm sucrose-based polyether polyols yuav muaj zog dua thiab tshuaj tiv thaiv.
3. Kev ruaj ntseg zoo thermal: Cov saw hlau nruj ntawm sucrose-based polyether polyols ua rau nws muaj kev ruaj ntseg zoo ntawm qhov kub thiab txias.
4. Kev tiv thaiv ib puag ncig: Sucrose yog ib qho khoom siv hluav taws xob thiab rov ua dua tshiab, yog li sucrose-based polyether polyols pab txo qis kev cia siab ntawm cov tshuaj lom neeg thiab yog ib qho kev xaiv zoo rau ib puag ncig.
Sucrose-raws li polyether polyols yog dav siv nyob rau hauv kev lag luam polyurethane, tshwj xeeb tshaj yog nyob rau hauv zus tau tej cov ntaub ntawv nyuaj ua npuas ncauj.Nws lub ntsiab siv xws li:
1. Rigid polyurethane ua npuas ncauj
Sucrose-based polyether polyols yog qhov tsim nyog rau kev tsim cov khoom siv tawv polyurethane foams vim tias lawv cov khoom ua haujlwm siab thiab nruj.Qhov no hom ua npuas ncauj feem ntau yog siv rau hauv cov ntaub ntawv rwb thaiv tsev, xws li cov tub yees, txias cia, cov kav dej, cov phab ntsa thiab lwm yam. Cov ntaub ntawv ua npuas ncauj muaj cov thermal rwb thaiv tsev zoo heev thiab muaj zog compressive, yog li lawv tau siv dav hauv kev tsim kho thiab kev lag luam tub yees.
2. Polyurethane composite ntawv
Sucrose-raws li polyether polyols tuaj yeem siv los ua cov khoom tseem ceeb ntawm polyurethane composite panels, uas yog dav siv nyob rau hauv lub tsev thermal rwb thaiv tsev, kho kom zoo nkauj, rwb thaiv tsev kub thiab suab rwb thaiv tsev daim ntaub ntawv. Cov ntawv sib xyaw yog lub teeb yuag thiab muaj cov khoom siv zoo thiab thermal rwb thaiv tsev.
3. Perfusion molding khoom
Hauv qee daim ntawv thov tshwj xeeb, polyurethane ua los ntawm sucrose-based polyether polyols tuaj yeem siv rau perfusion molding los npaj cov ntaub ntawv muaj zog thiab cov khoom sib xyaw ua ke.Cov ntaub ntawv no feem ntau siv los tiv thaiv cov tsheb, nkoj, thiab cov khoom siv hluav taws xob.
4. Cov qauv ua npuas ncauj
Sucrose-raws li polyether polyols kuj yog siv los tsim cov qauv ua npuas ncauj. Cov txheej txheem ua npuas ncauj muaj qhov ntom ntom ntom thiab lub zog, uas haum rau kev txhawb nqa thiab ntxiv dag zog rau hauv cov rooj tog zaum thiab kev lag luam txaj.