Tsis ntev los no, tau muaj kev nug ntau zaus los ntawm cov neeg siv khoom txog cov hmoov putty, xws li nws nyiam pulverize lossis nws tsis muaj peev xwm ua tiav lub zog. Nws paub tias ntxivcellulose etheryog tsim nyog los ua cov hmoov putty, thiab ntau tus neeg siv tsis ntxiv dispersible latex hmoov. Ntau tus neeg tsis ntxiv cov hmoov nplaum kom txuag tau tus nqi, tab sis qhov no kuj yog tus yuam sij rau vim li cas cov putty zoo tib yam tuaj yeem ua rau pulverization thiab cov teeb meem khoom zoo!
Ordinary putty (xws li 821 putty) feem ntau yog ua los ntawm cov hmoov dawb, cov hmoov txhuv nplej siab me ntsis, thiab CMC (hydroxymethyl cellulose), thiab tseem muaj cov khoom ua los ntawm methyl cellulose thiab ob zaug ya hmoov. Hom putty no tsis muaj adhesion thiab tsis tiv taus dej.
Tom qab yaj cellulose thiab dej, nws tuaj yeem nqus dej thiab nthuav dav. Tus nqi nqus dej ntawm cov khoom los ntawm cov tuam txhab sib txawv yog txawv, thiab cellulose plays lub luag haujlwm khaws dej hauv putty. Tom qab ziab, lub putty tsuas yog ib ntus muaj zog, tab sis dhau sij hawm, nws yuav maj mam poob hmoov, uas yog ze ze rau cov qauv molecular ntawm cellulose nws tus kheej. Hom putty no yog xoob, muaj dej nqus dej siab, nws yooj yim rau hmoov, tsis muaj zog, thiab elasticity. Yog hais tias topcoat yog siv rau nws, uas tsis muaj PVC yog feem ntau blistering; PVC siab yog ua rau lub cev qhuav dej, shrinkage, thiab tawg; Vim nws cov dej nqus dej siab, nws cuam tshuam rau kev tsim cov yeeb yaj kiab thiab kev tsim kho ntawm topcoat.
Txhawm rau txhim kho cov teeb meem saum toj no nrog putty, koj tuaj yeem kho cov mis putty thiab ntxiv qee cov hmoov latex redispersible los txhim kho lub zog tom qab ntawm putty. Xaiv cov khoom zoo hydroxypropyl methyl celluloseHPMCnrog kev ruaj ntseg zoo.Hydroxypropyl methyl cellulosemuaj cov dej tuav tus nqi ntawm cov khoom zoo cellulose, uas tuaj yeem ua kom cov khoom siv raw ntawm putty thiab txhim kho qhov zoo ntawm putty.
Yuav ua li cas yuav cuam tshuam rau cov hmoov putty yog tias tus nqi ntawm redispersible latex hmoov ntxiv thaum lub sij hawm cov txheej txheem putty tsis txaus, los yog inferior putty tej latex hmoov yog siv?
Tus nqi tsis txaus ntawmredispersible latex hmoovntxiv rau putty yog qhov qhia ncaj qha tshaj plaws ntawm xoob putty txheej, nto hmoov av, siv cov xim pleev xim thaum siv topcoat, tsis zoo leveling, ntxhib nto tom qab tsim zaj duab xis, thiab nyuaj rau kev tsim cov xim pleev xim zaj duab xis. Cov phab ntsa zoo li no yooj yim rau tev, blistering, tev, thiab tawg ntawm cov xim zaj duab xis. Yog tias cov hmoov putty tsis zoo raug xaiv, qib ntawm kev puas tsuaj rau tib neeg lub cev tshwm sim los ntawm cov pa phem xws li formaldehyde generated ntawm phab ntsa yog pom tseeb.
Txhawm rau hloov qhov xwm txheej tam sim no, nws yog ib qho tsim nyog yuav tsum tshem tawm tag nrho cov putty inferior yam tsis muaj qhov seem seem, thiab tom qab ntawd yuav cov khoom tsim nyog putty thiab latex xim! Txhawm rau kom tsis txhob poob qhov tsis tsim nyog, cov neeg siv khoom yuav tsum sim xaiv cov khoom lag luam los ntawm cov npe loj nrog kev lees paub zoo rau kev yooj yim ntawm kev xaiv putty.
Longou Company tshwj xeeb hauv kev tsim thiab muag cov ntoo fibers, hmoov txhuv nplej siab ether, hydroxypropyl methyl cellulose, redispersible latex hmoov
Post lub sij hawm: Sep-06-2023