Hais txog qhov teeb meem uas cov hmoov putty yog ib qho yooj yim rau hmoov, los yog lub zog tsis txaus.Raws li peb txhua tus paub, cellulose ether yuav tsum tau ntxiv los ua cov hmoov putty, HPMC yog siv rau phab ntsa putty, thiab ntau tus neeg siv tsis ntxiv cov hmoov latex redispersible.Ntau tus neeg tsis ntxiv cov hmoov polymer txhawm rau txhawm rau txuag cov nqi, tab sis qhov no kuj yog tus yuam sij rau vim li cas cov putty zoo ib yam yooj yim rau cov hmoov thiab ua rau cov teeb meem zoo!
Ordinary putty (xws li 821 putty) feem ntau yog ua los ntawm cov hmoov dawb, me ntsis hmoov txhuv nplej siab thiab CMC (hydroxymethyl cellulose), thiab qee qhov yog ua los ntawm methyl cellulose thiab Shuangfei hmoov.Cov putty no tsis muaj adhesion thiab tsis muaj dej resistant.
Cellulose tuaj yeem nqus dej thiab o tom qab yaj hauv dej.Cov khoom lag luam los ntawm cov tuam txhab sib txawv muaj qhov sib txawv ntawm qhov nqus dej.Cellulose plays lub luag haujlwm hauv kev khaws dej hauv putty.Lub qhuav putty tsuas muaj qee lub zog ib ntus, thiab nws yuav maj mam de-hmoov tom qab ntev.Qhov no yog ze ze rau cov qauv molecular ntawm cellulose nws tus kheej.Xws li putty yog xoob, muaj dej nqus dej, yooj yim rau pulverize, tsis muaj zog, thiab tsis muaj elasticity.Yog hais tias topcoat yog siv rau saum, uas tsis muaj PVC yog ib qho yooj yim rau tawg thiab ua npuas ncauj;siab PVC yog yooj yim rau shrink thiab tawg;vim muaj kev nqus dej siab, nws yuav cuam tshuam rau kev tsim cov yeeb yaj kiab thiab kev tsim kho ntawm topcoat.
Yog tias koj xav txhim kho cov teeb meem saum toj no ntawm lub putty, koj tuaj yeem kho cov qauv putty, ntxiv qee cov hmoov latex redispersible kom tsim nyog los txhim kho lub zog tom qab ntawm putty, thiab xaiv cov khoom zoo hydroxypropyl methylcellulose HPMC nrog guaranteed zoo.
Nyob rau hauv tus txheej txheem ntawm putty ntau lawm, yog hais tias tus nqi ntawm redispersible latex hmoov ntxiv yog tsis txaus, los yog inferior latex hmoov rau putty yog siv, nws yuav cuam tshuam dab tsi rau cov hmoov putty?
Tsis txaus tus nqi ntawm putty redispersible latex hmoov, qhov qhia ncaj qha tshaj plaws yog tias cov txheej putty yog xoob, qhov saum npoo yog pulverized, tus nqi ntawm cov xim siv rau topcoating yog loj, cov cuab yeej leveling tsis zoo, nto yog ntxhib tom qab tsim zaj duab xis, thiab nws yog ib qho nyuaj rau tsim ib tug tuab 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 koj xaiv cov hmoov putty tsis zoo, nws pom tseeb tias cov pa phem xws li formaldehyde ua rau ntawm phab ntsa yuav ua rau lub cev raug mob rau lwm tus.
Post lub sij hawm: Jun-15-2023