Hais txog cov teeb meem uas cov hmoov putty yog yooj yim rau hmoov, lossis lub zog tsis txaus. Raws li peb txhua tus paub, cellulose yuav tsum tau ntxiv los ua kom muaj hmoov rau phab ntsa, thiab ntau cov neeg siv tsis ntxiv recispersible looj hmoov. Coob tus neeg tsis ntxiv polymer hmoov kom txuag nqi, tab sis qhov no tseem yog tus yuam sij rau vim li cas thiaj yooj yim rau cov teeb meem khoom muaj teeb meem.
Cov zaub mov zoo tib yam (xws li 821 putty) yog ua los ntawm cov hmoov dawb, me ntsis starch nplaum thiab CMC (hydroyl cellulose thiab shuangfei hmoov. Cov zaub no tsis muaj adaesion thiab tsis yog dej tsis kam.
Cellulose tuaj yeem nqus dej thiab o tom qab tom qab tau yaj hauv dej. Cov khoom lag luam los ntawm cov tuam ntxhab sib txawv muaj cov nqi dej sib haum xeeb. Cellulose ua lub luag haujlwm lub luag haujlwm hauv dej tuav cia hauv kev ua tiav. Lub qhuav zaub tsuas yog muaj qee lub zog ib ntus, thiab nws yuav maj mam de-hmoov tom qab ntev. Qhov no yog ze rau cov qauv molecular ntawm cellulose nws tus kheej. Xws li putty yog xoob, muaj cov dej nqus dej siab, yog ib qho yooj yim rau pulverize, tsis muaj lub zog, thiab tsis muaj elasticity. Yog hais tias topcoat yog thov rau saum, qis li PVC yog qhov yooj yim los tawg thiab ua npuas ncauj; Lub siab PVC yog yooj yim rau kev ntsws thiab tawg; Vim tias cov dej nqus dej siab, nws yuav cuam tshuam rau zaj duab xis thiab kev siv cov nyhuv topcoat.
Yog tias koj xav txhim kho cov teeb meem saum toj no ntawm lub putty, koj tuaj yeem kho cov tshuaj txhuam kom zoo dua los txhim kho hydroxyprropylulose hpmc nrog lav zoo.
Nyob rau hauv tus txheej txheem ntawm kev sib tw ua tiav, yog tias tus nqi ntawm recispersible looj hmoov ntxiv rau tsis txaus, lossis yog tias siv tsis tau, nws yuav muaj kev cuam tshuam dab tsi?
Tsis txaus ntawm putty redispersible looj hmoov yas yog xoob, qhov ntau ntawm cov xim yog xoob, qhov chaw yog ntxhib dua tom qab zaj duab xis tom qab ua yeeb yaj kiab, thiab Nws yog qhov nyuaj rau tsim cov xim pleev xim ntom zaj duab xis. Xws li cov phab ntsa no yog nquag mus rau tev, tawg, pleev xim, thiab tawg ntawm cov xim zaj duab xis. Yog tias koj xaiv cov hmoov av tsis muaj zog, nws yog pom tseeb tias cov pa roj teeb meem zoo xws li daim ntawv foos yuav ua rau lwm tus ua phem rau lwm tus.
Lub Sijhawm Post: Jun-15-2023