Cellulose ether yog non-ionic semi-synthetic polymer, dej-soluble thiab hnyav ob, nyob rau hauv ntau industries tshwm sim los ntawm lub luag hauj lwm yog txawv, xws li nyob rau hauv cov tshuaj siv tsev cov ntaub ntawv, nws muaj cov nram qab no compound nyhuv:
① dej tuav tus neeg saib xyuas, ② thickening tus neeg saib xyuas, ③ leveling, ④ zaj duab xis tsim, ⑤ binder
Hauv kev lag luam PVC
Nws yog ib qho emulsifier, dispersant;
Hauv kev lag luam kws tshuaj excipient
nws yog ib hom kev khi thiab qeeb tso cov khoom siv pob txha, vim tias cellulose ether muaj ntau yam kev sib xyaw ua ke, yog li nws yog qhov siv ntau tshaj plaws.Hauv qab no kuv tsom mus rau kev siv cellulose ether hauv ntau yam khoom siv hauv tsev thiab lub luag haujlwm.
Hauv cov xim latex
Nyob rau hauv cov xim xim latex, xaiv hydroxyethyl cellulose, cov ntsiab lus dav dav ntawm qhov sib npaug viscosity yog 3000-50000cps, nws sib haum rau HBR250 specifications, qhov siv ntau npaum li cas feem ntau yog 1.5‰-2‰.Lub luag haujlwm tseem ceeb ntawm hydroxyethyl cellulose hauv cov xim latex yog ua kom tuab, tiv thaiv cov xim gelation, pab txhawb kev tawg ntawm cov xim, latex, ruaj khov, thiab tuaj yeem txhim kho cov viscosity ntawm cov khoom, pab txhawb kev ua haujlwm ntawm kev tsim kho: Hydroxyethyl cellulose yog ib qho yooj yim mus use. , ob qho tib si dej txias thiab dej kub tuaj yeem yaj, thiab tsis cuam tshuam los ntawm tus nqi PH.Nws tuaj yeem siv tau zoo ntawm PI tus nqi 2 thiab 12. Cov txheej txheem siv raws li hauv qab no:
I. Ntxiv ncaj qha rau hauv ntau lawm
Rau txoj kev no, ncua sij hawm hydroxyethyl cellulose nrog lub sij hawm tawg ntawm ntau tshaj 30 feeb yuav tsum tau xaiv.Cov txheej txheem yog raws li hauv qab no: (1) kom muaj siab yuav tsum txiav lub khob ntim kom muaj nuj nqis ntawm cov dej ntshiab (2) lub zog sab hauv ntawm tib neeg pib sib tov qis, hydroxyethyl uniform maj mam tib lub sij hawm los koom rau hauv kev daws teeb meem (3) txuas ntxiv mus kom txog rau thaum tag nrho cov ntaub ntawv ntub dej (4) txhawm rau koom nrog lwm cov khoom siv ntxiv thiab alkaline additives (5) do kom txog thaum tag nrho cov hydroxyethyl yaj tag, ntxiv lwm cov khoom xyaw ntawm cov mis, sib tsoo rau cov khoom tiav.
2, nruab nrog niam cawv
Txoj kev no tuaj yeem xaiv qhov ceev ceev - soluble cellulose, thiab muaj mildew - pov thawj nyhuv.Qhov kom zoo dua ntawm txoj kev no yog kom muaj qhov yooj yim dua, tuaj yeem koom nrog emulsioni xim ncaj qha rau hauv, tsim ib txoj hauv kev zoo ib yam li ①–④ kauj ruam yog tib yam.
3, nrog porridge rau kev siv
Txij li cov kuab tshuaj organic yog cov kuab tshuaj tsis zoo (insoluble) rau hydroxyethyl, lawv tuaj yeem siv los npaj porridge.Feem ntau siv cov kuab tshuaj organic yog cov kua organic hauv cov xim latex, xws li ethylene glycol, propylene glycol thiab cov neeg ua yeeb yaj kiab (xws li diethylene glycol butyl acetate), porridge hydroxyethyl cellulose tuaj yeem ncaj qha ntxiv rau cov xim, tom qab ntxiv, txuas ntxiv mus kom txog thaum yaj tag.
Nyob rau hauv lub scraping phab ntsa putty
Tam sim no, Tuam Tshoj yog nyob rau hauv feem ntau ntawm lub nroog dej tsis kam, tsis kam mus rau swab ntawm ib puag ncig tiv thaiv putty tau yeej coj tiag tiag los ntawm cov neeg, nyob rau hauv ob peb xyoos dhau los, vim hais tias lub putty ua los ntawm lub tsev kua nplaum radiates formaldehyde gas puas rau tib neeg noj qab haus huv, lub tsev. kua nplaum yog ua los ntawm polyvinyl cawv thiab formaldehyde acetal cov tshuaj tiv thaiv.Yog li cov khoom siv no maj mam tshem tawm los ntawm tib neeg, thiab kev hloov ntawm cov khoom siv no yog cellulose ether series ntawm cov khoom, uas yog hais tias, kev tsim cov khoom siv tiv thaiv ib puag ncig, cellulose yog tib yam khoom siv tam sim no.
Nyob rau hauv dej tsis kam putty yog muab faib ua qhuav hmoov putty thiab putty muab tshuaj txhuam ob hom, ob hom putty feem ntau xaiv methyl cellulose thiab hydroxypropyl methyl ob hom, viscosity specification feem ntau nyob rau hauv 40,000-75000cps ntawm qhov tsim nyog tshaj plaws, nyob rau hauv lub luag hauj lwm tseem ceeb ntawm cellulose nyob rau hauv putty yog dej tuav, bonding, lubrication thiab lwm yam teebmeem.
Vim hais tias cov mis putty ntawm txhua lub chaw tsim tshuaj paus tsis zoo ib yam, ib co yog grey calcium, lub teeb calcium, dawb cement, ib co yog gypsum hmoov, grey calcium, lub teeb calcium, thiab lwm yam, yog li cov specification viscosity thiab infiltration ntawm cellulose ntawm ob lub qauv. tsis zoo ib yam, qhov dav dav ntawm kev ntxiv yog 2‰-3‰ los yog li ntawd.
Post lub sij hawm: Dec-10-2021