Dab tsi yog cov khoom ntawm polyurethane nplaum zoo li?

Apr 02, 2021

Tso lus

Cov nplaum polyurethane tuaj yeem kho tau ntawm chav tsev kub. Cov tshuaj tiv thaiv ua kom tawv nqaij polyurethane nplaum, yog tias nws siv sijhawm ntev heev los kho nyob rau ntawm chav tsev kub, ib qho kev tiv thaiv ntxiv tuaj yeem txhawb nqa kev kho mob. Txhawm rau kom luv luv lub sijhawm curing, cua sov tuaj yeem siv. Cov cua kub tsis yog tsuas yog ua kom txoj kev kho tus nplaum txhawm rau txhawm rau xwb, tabsis tseem ua rau kom muaj qhov ntsuas nrawm dhau ntawm NCO cov pawg hauv cov kua nplaum thiab cov pawg nquag hydrogen ua haujlwm nyob rau saum npoo ntawm cov substrate. Cov cua kub tseem tuaj yeem ua rau daim nplaum nplaum nplaum txhawm rau txhawm rau txhawm rau nkag mus rau sab npoo ntawm cov khoom, thiab yog qhov muaj txiaj ntsig rau cov dej molecular txav, thiab nrhiav" tus khub" uas ua kom muaj zog molecular ntawm cov lus sib txuas.

Cua sov muaj txiaj ntsig zoo los txhim kho adhesion. Txoj kev kho cua sov muaj xws li lub qhov cub lossis ziab khaub ncaws kom qhuav, chav tsev ua kom cua sov, kho cua sov thiab lwm yam. Rau cov hlau txheej ua kom sov nrog rau qhov hloov tshav kub ceev, clamps tuaj yeem siv kom sov, thiab cov nplaum txheej yog rhuab sai dua qhov cub.

Cov txheej txheem cua sov yuav tsum tau nce zuj zus. Hnyav-based polyurethane kua nplaum yuav tsum them sai sai rau qhov hloov ceev ntawm qhov hnyav. Thaum lub sij hawm ziab, feem ntau ntawm cov kuab tshuaj tau tas, thiab cov kuab tshuaj ntxiv uas maj mam tawm los ntawm cov nplaum lo. Yog tias cov cua sov nrawm dhau los, cov kuab tshuaj yuav vaporize thiab npuas nyob rau hauv cov nplaum muag txheej, ua rau cov npuas hauv qhov sib koom ua ke Cov mob hnyav, feem ntau ntawm cov neeg tsis tuaj yeem thiab cov nplaum khov yuav tuaj yeem tawm ntawm qhov sib koom tes, thiab qhov tsim ntawm qhov tsis tuaj yeem yuav cuam tshuam tsevneeg lub zog. Rau ob-txheej ua kom tsis txhob muaj cov nplaim nplaum thiab ib qho sib xyaw ua kom noo-kho cov nplaum, cov cua kub yuav tsum tsis txhob nrawm dua, txwv tsis pub NCO pawg yuav ua kom nrawm muaj cov tshuaj tiv thaiv nrog cov ya raws hauv cov kua nplaum lossis cov nplaim dej hauv av lossis hauv huab cua, thiab cov pa roj carbon Monoxide uas tsim tawm yuav tsis muaj sijhawm los ua kom tawg, thiab txheej txheej kua nplaum yuav tsum nce sai, thiab cov npuas nyob hauv cov kua nplaum txheej.


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