Kev ua haujlwm thiab kev siv cellulose ether

Kev ua haujlwm thiab kev siv cellulose ether

Cellulose etheryog ib tug non-ionic semi-synthetic polymer, dej-soluble thiab hnyav ob, nyob rau hauv txawv 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 ib tug composite nyhuv: ① dej-retaining agent ② thickening agent ③ leveling ④ zaj duab xis sib sau ⑤ binder;Hauv kev lag luam PVC, nws yog emulsifier, dispersant;Nyob rau hauv kev lag luam kws tshuaj, nws yog ib hom ntawm binder thiab qeeb tso pob txha cov ntaub ntawv, vim hais tias cellulose muaj ntau yam composite cov teebmeem, yog li nws yog cov feem ntau lug siv teb.Hauv qab no kuv tsom mus rau kev siv cellulose ether hauv ntau yam khoom siv hauv tsev thiab lub luag haujlwm.

1, latex xim:

Nyob rau hauv lub latex xim kab, xaivhydroxyethyl cellulose, cov lus qhia dav dav ntawm viscosity yog RT3000-50000cps, 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 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 yooj yim siv, 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 ntawm kev siv yog raws li hauv qab no:

I. Ncaj qha ntxiv:

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.

ⅱ.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 tias nws muaj qhov yooj yim dua thiab tuaj yeem ncaj qha ntxiv rau hauv cov xim latex, txoj kev npaj yog tib yam li ①–④ cov kauj ruam.

ⅲ, nrog porridge rau 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.

2, scraping phab ntsa hauv lub putty:

Tam sim no, Tuam Tshoj yog nyob rau hauv feem ntau ntawm lub nroog cov dej tsis kam, tsis kam mus 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 cov 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 no maj mam tshem tawm los ntawm tib neeg, thiab kev hloov ntawm cov khoom no yog cellulose ether series ntawm cov khoom, uas yog hais tias, kev loj hlob ntawm ib puag ncig tiv thaiv tsev cov ntaub ntawv, cellulose yog tib yam khoom nyob rau hauv tam sim no.

Nyob rau hauv dej resistant putty yog muab faib mus rau hauv qhuav hmoov putty thiab putty muab tshuaj txhuam ob hom, ob hom putty feem ntau xaiv hloov methyl cellulose thiab hydroxypropyl methyl ob hom, viscosity specification feem ntau yog nyob rau hauv 3000-60000cps ntawm qhov tsim nyog tshaj plaws, nyob rau hauv lub luag hauj lwm tseem ceeb ntawm cellulose hauv putty yog dej tuav, sib txuas, 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.

Nyob rau hauv lub tshuab nqus tsev yuav dhuav nrog me nyuam kev tsim kho, lub hauv paus phab ntsa muaj tej yam absorbent (cib phab ntsa ntawm bibulous tus nqi yog 13%, lub pob zeb yog 3-5%), ua ke nrog evaporation ntawm lub ntiaj teb sab nraud, yog li ntawd yog dhuav nrog me nyuam. dej poob sai heev, yuav ua rau tawg lossis qhov tshwm sim xws li paj ntoos, kom lub zog ntawm putty tsis muaj zog, yog li ntawd, tom qab koom nrog cellulose ether yuav daws qhov teeb meem no.Tab sis qhov zoo ntawm cov khoom ntim, tshwj xeeb tshaj yog qhov zoo ntawm grey calcium kuj tseem ceeb heev.Vim lub siab viscosity ntawm cellulose, nws kuj tseem txhim khu lub buoyancy ntawm putty, thiab zam qhov tshwm sim ntawm ntws dai nyob rau hauv kev tsim kho, thiab nws yog ntau xis thiab zog-txuag tom qab scraping.

Nyob rau hauv hmoov putty, cellulose ether yuav tsum tsim nyog ntxiv rau lub Hoobkas taw tes, nws ntau lawm, siv yog yooj yim dua, sau cov ntaub ntawv thiab auxiliary qhuav hmoov tuaj yeem sib tov sib xyaw, kev tsim kho yooj yim dua, qhov chaw faib dej, ntau npaum li cas. 

3, pob zeb mortar:

Nyob rau hauv lub pob zeb mortar, tiag tiag ua tiav qhov kawg ntawm lub zog, yuav tsum ua kom cov cement hydration cov tshuaj tiv thaiv tag nrho, tshwj xeeb tshaj yog nyob rau lub caij ntuj sov, hauv kev tsim kho ntawm cov pob zeb mortar dej poob sai heev, kev ntsuas hydrated tag nrho ntawm kev kho dej, txoj kev no yog kev siv dej pov tseg thiab Kev ua haujlwm tsis yooj yim, qhov tseem ceeb tsuas yog nyob rau saum npoo, dej thiab hydration tseem tsis yog tag nrho, yog li txoj hauv kev los daws qhov teeb meem no, Ntxiv yim tus neeg tuav dej tuav cellulose hauv mortar pob zeb xaiv hydroxypropyl methyl lossis methyl cellulose, viscosity specifications hauv 20000- 60000cps ntawm, ntxiv 2%-3%.Txog, cov dej tuav tus nqi tuaj yeem nce mus rau ntau dua 85%, hauv mortar pob zeb siv txoj kev rau cov hmoov qhuav sib tov sib xyaw tom qab lub qhov ncauj mus rau hauv dej tuaj yeem ua tau.

4, xim gypsum, sib txuas gypsum, caulking gypsum:

Nrog rau txoj kev loj hlob sai ntawm kev tsim kho kev lag luam, tib neeg qhov kev thov rau cov khoom siv hauv tsev tshiab kuj tseem nce ntxiv nyob rau ib hnub, vim tias cov neeg muaj kev paub txog kev tiv thaiv ib puag ncig thiab kev txhim kho txuas ntxiv ntawm kev tsim kho kom zoo, cov khoom siv cementitious gypsum tau txhim kho sai.Tam sim no cov khoom gesso feem ntau muaj stucco gesso, caking gesso, teeb gesso, pobzeb caking tus neeg saib xyuas tos.

Plastering plaster yog ib hom zoo zoo sab hauv phab ntsa thiab ru tsev plastering cov ntaub ntawv, nrog nws so lub phab ntsa yog ilv thiab du, tsis txhob poob hmoov thiab lub hauv paus daim ntawv cog lus ruaj khov, tsis muaj cracking tawm tshwm sim, thiab muaj kev tiv thaiv hluav taws muaj nuj nqi;Adhesive gypsum yog ib yam tshiab ntawm lub tsev lub teeb board nplaum, gypsum raws li cov khoom siv hauv paus, ntxiv rau ntau yam ntxiv dag zog lub qhov ncauj tus neeg sawv cev ua los ntawm cov khoom nplaum, nws yog tsim rau txhua yam ntawm cov khoom siv hauv tsev inorganic ntawm daim ntawv cog lus, nrog cov tsis muaj tshuaj lom. , tasteless, thaum ntxov lub zog ceev ceev, kev sib txuas lus yog lub tsev board, thaiv kev tsim cov khoom txhawb nqa;Gypsum seam filling tus neeg sawv cev yog gypsum phaj nruab nrab ntawm qhov sib txawv filling cov khoom thiab phab ntsa, tawg kho filling.

Cov khoom siv gypsum no muaj ntau yam kev ua haujlwm sib txawv, ntxiv rau gypsum thiab lwm yam khoom siv los ua lub luag haujlwm, qhov teeb meem tseem ceeb yog ntxiv cellulose ether additives ua lub luag haujlwm tseem ceeb.Vim hais tias gesso muab faib tsis muaj dej gesso thiab ib xees ntawm ib nrab dej gesso, sib txawv gesso yog txawv rau cov kev ua tau zoo ntawm cov khoom, nce li tuab, tiv thaiv dej, qeeb coagulate qhov zoo uas txiav txim siab gesso tsev cov ntaub ntawv.Qhov teeb meem tshwm sim ntawm cov ntaub ntawv no yog hollow nruas cracking, lub zog pib yog tsis mus txog, los daws qhov teeb meem no, yog xaiv hom cellulose thiab retarder compound siv cov teeb meem, nyob rau hauv no hwm, kev xaiv dav dav ntawm methyl los yog hydroxypropyl methyl 30000-60000cps, ntxiv tus nqi yog 1.5% - 2%.Nyob nruab nrab, lub hom phiaj ntawm cellulose yog dej tuav thiab qeeb condensation lubrication.

Txawm li cas los xij, nyob rau hauv qhov no kom vam khom cellulose ether li retarder tsis yog mus txog, yuav tsum tau ntxiv citric acid retarder tom qab sib xyaw siv yuav tsis cuam tshuam rau thawj lub zog.

Dej tuav tus nqi feem ntau yog hais txog tus nqi ntawm cov dej tsis zoo nyob rau hauv qhov tsis muaj kev nqus dej sab nraud.Yog tias phab ntsa qhuav, lub hauv paus nto absorbs dej thiab ntuj evaporation ua rau cov khoom poob dej sai heev, thiab tseem yuav muaj lub nruas khoob thiab qhov tshwm sim tawg.

Txoj kev siv no yog sib tov cov hmoov qhuav, yog tias qhov kev npaj ntawm kev daws tuaj yeem xa mus rau kev npaj ntawm kev daws.

5, rwb thaiv tsev mortar

Thermal rwb thaiv tsev mortar yog ib yam tshiab ntawm sab hauv phab ntsa thermal rwb thaiv tsev khoom nyob rau sab qaum teb Tuam Tshoj.Nws yog cov khoom siv phab ntsa ua ke los ntawm cov khoom siv thermal rwb thaiv tsev, mortar thiab binder.Hauv cov khoom no, cellulose plays lub luag haujlwm tseem ceeb hauv kev sib txuas thiab ua kom muaj zog.Feem ntau, methyl cellulose uas muaj viscosity siab (txog 10,000 CPS) raug xaiv, thiab qhov ntau npaum li cas ntawm 2‰ thiab 3‰.Cov hmoov qhuav sib tov yog siv.

6, tus neeg saib xyuas interface

Tus neeg saib xyuas interface yog HPMC20000cps, cov pobzeb khi yog ntau tshaj 60000cps, thiab tus neeg saib xyuas interface yog siv los ua cov thickener, uas tuaj yeem txhim kho lub zog tensile thiab lub zog xub.