Yuav ua li cas ua kom lub tshuab ua npuas ncauj polyurethane ua haujlwm zoo?
Polyurethane foaming tshuab yog cov cuab yeej tshwj xeeb rau kev txhaj tshuaj thiab foaming ntawm polyurethane ua npuas ncauj. Tsuav yog cov khoom siv polyurethane raw cov ntaub ntawv (isocyanate tivthaiv thiab polyether polyol tivthaiv) kev ua tau zoo raws li cov qauv kev cai. Cov khoom siv tuaj yeem tsim cov khoom sib xws thiab tsim nyog ua npuas ncauj. Nws yog tsim los ntawm foamed yas los ntawm cov tshuaj tiv thaiv foaming ntawm polyether polyol thiab polyisocyanate nyob rau hauv lub xub ntiag ntawm ntau yam tshuaj additives xws li foaming agent, catalyst thiab emulsifier.
Yog li cas peb tuaj yeem ua kom lub tshuab ua npuas ncauj polyurethane ua haujlwm tau zoo?
1. Kev khaws cia ntawm isocyanate thiab ua ke polyether chim ntawm polyurethane dub thiab dawb cov khoom siv tshuaj tsuag tshuab yuav tsum tsis txhob raug tshav ntuj. Nws yuav tsum tau khaws cia kom deb ntawm qhov chaw sov thiab muab tso rau hauv qhov chaw txias thiab qhuav. Yog hais tias lub thoob yog muab tso rau upright, yuav tsum tsis txhob muaj dej ntawm lub hau! Cov khoom siv hauv lub thoob tsis tuaj yeem siv tau ib zaug, thiab lub hau npog yuav tsum kaw kom nruj tam sim ntawd tom qab txhua qhov siv los tiv thaiv cov dej vapor thiab impurities nkag mus rau hauv lub thoob thiab cuam tshuam rau qhov zoo. Yog tias ob lossis ntau qib ntawm polyether siv ua ke, lawv yuav tsum tau muab tso rau raws li qib sib txawv, thiab muaj cov cim qhia pom tseeb. Cov polyether ua ke nrog cov nplaim hluav taws kub yuav tsum tsis txhob khaws cia ntev dhau, thiab yuav tsum tau siv tib hnub ntawm kev npaj, txwv tsis pub nws yuav yooj yim ua rau deterioration thiab cuam tshuam qhov zoo ntawm foaming.
2. Thaum ua haujlwm isocyanate thiab ua ke polyether ntawm polyurethane dub thiab dawb cov khoom siv tshuaj txau, cov neeg ua haujlwm yuav tsum hnav tsom iav tiv thaiv, khaub ncaws ua haujlwm thiab lub kaus mom ua haujlwm; Cov hnab looj tes roj hmab huv yuav tsum hnav thaum ua haujlwm isocyanate. Qhov chaw ua haujlwm yuav tsum muaj qhov cua zoo thiab huv si. Thaum qhov kub thiab txias hauv thaj chaw cog yog siab, lub siab yuav raug tsim vim yog ib feem ntawm vaporization ntawm tus neeg sawv cev foaming nyob rau hauv cov polyether ua ke, yog li lub hau npog yuav tsum tau qhib ua ntej kom tso cov roj siab, thiab tom qab ntawd lub hau npog yuav tsum tau qhib. qhib. Thaum ua npuas ncauj yuav tsum tau nplaim taws retardant (ceeb toom: nws tus kheej tua hluav taws los ntawm hluav taws), ib tug additive nplaim retardant yuav siv tau. Tus nqi ntawm cov nplaim hluav taws zoo tib yam ntxiv yog 15-20 feem pua ntawm qhov hnyav ntawm cov khoom siv dawb, thiab cov nplaim hluav taws yuav tsum tau nplawm thaum ntxiv rau cov khoom dawb. Foaming tuaj yeem nqa tau tom qab sib xws.