Cellulose etheryog cov tsis-ionic semi-hluav taws xob polymer, uas yog dej-soluble thiab cov kuab-soluble. Nws muaj cov teebmeem sib txawv hauv kev lag luam sib txawv. Piv txwv li, hauv cov khoom siv hauv tsev, nws muaj cov qauv sib xyaw hauv qab no Hauv kev lag luam polyvinyl chloride kev lag luam, nws yog emulsifier thiab dispersant; Hauv kev lag luam kws tshuaj, nws yog tus neeg sawv cev thiab lwm yam khoom siv muaj ntau daim foos thov tau muaj ntau daim teb muaj ntau yam ntxiv. Tom ntej no, Kuv yuav tsom mus rau kev siv thiab ua haujlwm ntawm cellulose ethers hauv cov ntaub ntawv tiv thaiv ib puag ncig lub tsev.
1. Hauv cov xim looj xwb
Nyob rau hauv lub latex xim kev lag luam, hydroxyethyl cellulose yuav tsum tau xaiv. Qhov kev qhia tshwj xeeb ntawm viscosity yog RT30000000000000000000000000000000000000000000000000000000000-500, thiab cov kev siv tshuaj ntau npaum li cas txog 1.5 ‰ -2 ‰. Lub ntsiab muaj nuj nqi ntawm hydroxyethyl hauv looj xim yog txhawm rau txhawm rau txhawm rau ntawm cov xim sib xyaw, thiab muaj txiaj ntsig zoo rau kev ua haujlwm theem ntawm kev tsim kho: Hydroxyethyl Etheny Cellulose yog qhov yooj yim dua los siv. Nws tuaj yeem raug ntiab tawm hauv dej txias thiab dej kub, thiab nws tsis cuam tshuam los ntawm tus nqi PH. Nws tuaj yeem siv tau ntawm tus nqi PHY ntawm 2 thiab 12. Muaj peb txoj kev siv:
I. Ntxiv rau hauv ntau lawm:
Hom no yuav tsum xaiv hydroxyethyl cellulose qeeb hom - hydroxyethyl cellulose nrog lub sijhawm sib cais ntawm ntau tshaj 30 feeb. Cov kauj ruam muaj raws li hauv qab no: ① Ntxiv ib qho dej ntshiab rau lub thawv loj me me ntxiv rau cov kev daws teeb meem sai sai ntxiv rau qhov kev daws teeb meem ③continue kom do Kom txog thaum txhua cov ntaub ntawv gran yog soaked ④add lwm yam ib pab pawg thiab lwm yam ntxiv kom txog thaum txhua yam hauv cov mis thiab zom kom txog thaum cov khoom tiav.
Ⅱ. Nruab nrog niam cawv rau kev siv tom qab:
Txoj kev no tuaj yeem xaiv hom tseem ceeb, thiab muaj cov tshuaj tiv thaiv cov txiaj ntsig ntawm cellulose. Qhov zoo dua ntawm txoj kev no yog tias nws tau muaj kev yoog tau zoo dua thiab tuaj yeem txuas ntxiv mus rau cov xim looj. Txoj kev npaj npaj yog tib yam li cov kauj ruam ①-④.
Ⅲ. Npaj nws rau hauv porridge rau kev siv tom qab:
Txij li thaum Organic cov kuab tshuaj yog cov kuab tshuaj tsis zoo (insoluble) rau hydroxyethyl, cov kuab tshuaj no tuaj yeem siv los ua cov porridge. Feem ntau siv cov kuab tshuaj organic yog cov ethylene ua kua, xws li diylene glycol, thiab zaj duab xis-ua cov neeg sawv cev (xws li diethylene glyyl acetate). Cov porridge hydrothethyl cellulose tuaj yeem txuas ncaj qha ntxiv rau cov xim. Txuas ntxiv mus rau kom txog thaum yaj tag.
2. Nyob rau hauv phab ntsa scraping putty
Tam sim no, nyob hauv ntau lub nroog hauv kuv lub tebchaws, cov dej-tiv taus thiab txhuam-resistant ib puag ncig-phooj ywg putty tau muaj txiaj ntsig los ntawm cov neeg. Nws yog tsim los ntawm acetal cov tshuaj tiv thaiv ntawm vinyl cawv thiab formaldehyde. Yog li ntawd, cov ntaub ntawv no maj mam muab tshem tawm los ntawm cov neeg, thiab lub cellulose siv ether series yog siv los hloov cov khoom no. Uas yog hais, rau kev txhim kho cov ntaub ntawv ua kom zoo hauv tsev, cellulose yog tam sim no yog cov khoom siv xwb.
Nyob rau hauv cov dej-resistant putty, nws tau muab faib ua ob hom: qhuav hmoov putty thiab putical muab tshuaj txhuam. Ntawm cov ob hom putty, HydroxyPropyyl methylcellulose yog feem ntau xaiv, thiab viscosity specure yog feem ntau ntawm 80,000-90,000. Lub luag haujlwm yog dej khaws cia, kev sib koom tes, lubrication thiab lwm yam.
Txij li cov qauv putty ntawm ntau cov tuam ntxhab sib txawv, qee qhov grey calcium, dawb xis mas, thiab lwm yam. ob daim qauv kuj sib txawv. Tus nqi ntxiv yog li ntawm 3 ‰ -5 ‰.
Hauv kev tsim kho ntawm phab ntsa scraping puttty, txij li hauv paus ntawm phab ntsa muaj qee qhov kev nqus dej yog 13%, thiab cov khoom nqus dej ntawm cov pob zeb yog 3-5%), Ua ke nrog txoj kev evaped ntawm lub ntiaj teb sab nraud, yog tias lub putty loses tau nrawm heev, nws yuav ua rau tawg lossis hmoov tshem tawm, uas yuav ua rau muaj zog lub zog ntawm lub putty. Yog li no, ntxiv cellulose ether yuav daws cov teeb meem no. Tab sis qhov zoo ntawm tus muab tub lim, tshwj xeeb yog qhov zoo ntawm cov hmoov av tshauv kuj tseem tseem ceeb heev. Vim yog cov viscosity siab ntawm cellulose, lub buoyancy ntawm lub putty tseem ua kom zoo dua qub thaum lub sijhawm kev tsim kho kuj yog zam, thiab ua haujlwm zoo dua thiab ua haujlwm zoo dua tom qab scraping.
3. Kev Tshuaj Khib Nyuj
Nyob rau hauv cov chaw sib khib, kom ua tiav lub zog kawg, cov xis mas hydrated. Tshwj xeeb tshaj yog nyob rau hauv kev tsim kho lub caij ntuj sov, lub pob zeb pov tseg dhau nrawm, thiab ntsuas ntawm cov dej ua tiav tau siv los tswj cov dej thiab ua kom huv. Khib ntawm cov peev txheej thiab tsis zoo ua haujlwm. Tus yuam sij yog tias cov dej tsuas yog nyob rau saum npoo, thiab txoj kev hydration sab hauv yog tseem tsis tiav. Yog li no, txoj kev daws rau cov teeb meem no yog ntxiv hydroxypropyl methylulose ntawm 150,000 thiab 200,000 rau cug pob zeb. , qhov nyiaj ntxiv yog kwv yees li 2 ‰ -3 ‰, thiab cov dej tuav cia yuav nce ntxiv rau ntau dua 92%. Cov txheej txheem ntawm kev siv nyob rau hauv coll qhob yog kom ntxiv dej tom qab cov hmoov qhuav yog tusyees sib xyaw.
4. Nyob rau hauv plastering gypsum, tsevneeg khi gypsum, caulking gypsum
Nrog rau kev txhim kho sai ntawm kev tsim kho kev tsim kho, cov neeg xav tau rau cov ntaub ntawv hauv tsev tshiab kuj tseem nce hnub ib hnub. Vim tias qhov nce ntawm tib neeg qhov kev tiv thaiv ntawm ib puag ncig kev tiv thaiv ib puag ncig thiab kev txhim kho txuas ntxiv ntawm kev tsim kho, nyem cov khoom noj gypsum tau tsim sai. Tam sim no, feem ntau cov gypsum feem ntau yog plastering gypsum, sib khi gypsum, inlaid gypsum, thiab pobzeb nplaum.
Plastering gypsum yog lub tshuab nqus hluav taws xob zoo rau sab hauv phab ntsa thiab qab nthab. Phab ntsa saum npoo Plastered nrog nws yog qhov zoo thiab du, tsis poob hmoov, yog tsis muaj kev sib raug zoo rau lub hauv paus, tsis muaj kev tawg thiab poob tawm, thiab muaj lub fireproof muaj nuj nqi; Bonded Gypsum yog hom kev txhim kho teeb pom kev zoo yog cov khoom nplaum ua los ntawm gypsum raws li cov khoom siv hauv paus thiab ntxiv ntau yam ntxiv. Nws yog qhov tsim nyog rau kev sib raug zoo ntawm ntau cov khoom siv phab ntsa hauv tsev. Nws tsis yog-lom, tsis muaj qab hau, cov yam ntxwv zoo xws li lub zog thaum ntxov, thiab kev sib koom ua ke, nws yog ib qho kev txhawb nqa rau vaj huam sib luag thiab thaiv kev tsim kho; Gypsum caulking tus neeg sawv cev yog ib tug gap muab tub lim ntawm gypsum panels thiab kho cov muab rau cov phab ntsa thiab cov kab nrib pleb.
Cov khoom lag luam gypsum no muaj cov lus sib txawv ntawm cov haujlwm sib txawv. Ntxiv nrog rau lub luag haujlwm ntawm Gypsum thiab lwm cov fillers, qhov teeb meem tseem ceeb yog tias cov cellulose ntxiv ether additive ua lub luag haujlwm. Vim tias Gypsum tau muab faib ua cov khoom lag luam hauv pob zeb Gypsum thiab Hemihydrate, dej sib txawv, rov qab txiav txim siab qhov zoo ntawm gypsum cov ntaub ntawv hauv tsev. Cov teeb meem tshwm sim ntawm cov ntaub ntawv no yog hollowing thiab tawg, thiab thawj lub zog tsis tuaj yeem hu tau. Txhawm rau kom daws tau qhov teeb meem no, nws yog xaiv cov hom cellulose thiab cov qauv siv hloov tshiab ntawm Retarder. Hauv qhov no, methyl lossis hydroxypropyl pthyl 30000 feem ntau xaiv. -60000, qhov nyiaj ntxiv yog nruab nrab ntawm 1.5 ‰ -2 ‰, thiab lub cellulose tsom rau kev tswj kav dej thiab retarding lubrication.
Txawm li cas los xij, nws tsis yooj yim sua kom cia siab rau ntawm cellulose ether raws li ib tug retarder, thiab nws yog qhov tsim nyog los sib tov thiab siv yam tsis cuam tshuam rau thawj lub zog.
Dej khaws cia feem ntau yog hais txog ntau npaum li cas dej yuav ploj mus ib txwm tsis muaj dej nqus dej. Yog tias lub phab ntsa qhuav dhau, kev nqus dej thiab ntuj evaporation rau ntawm cov khoom ntom ntom ntom ntom ntom ntom nrawm, thiab hollowing thiab tawg yuav tshwm sim.
Hom no ntawm kev siv yog tov nrog hmoov qhuav. Yog tias koj npaj kev daws teeb meem, thov saib txoj kev npaj ntawm kev daws teeb meem.
5.. Thermal rwb thaiv tsev cug
Rwb thaiv kev cap yog ib hom tshiab ntawm phab ntsa sab hauv phab ntsa sab hauv phab ntsa hauv sab hauv sab qaum teb cheeb tsam. Nws yog cov duab hluav taws xob synthesized los ntawm rwb thaiv tsev cov khoom, tshuaj khib thiab siv. Hauv cov khoom siv no, cellulose ua lub luag haujlwm tseem ceeb hauv kev sib raug zoo thiab ua kom muaj zog. Feem ntau xaiv methyl cellulose nrog siab viscosity (txog 150,000), cov tshuaj ntau) yog feem ntau ntawm 2 ‰ -3 ‰), thiab txoj kev siv yog hmoov nplej qhuav.
6. Tus neeg sawv cev
Tus neeg sawv cev interface yuav tsum tau HPNC20000, thiab cov nplais nplaum yuav tsum muaj ntau dua 100,000. Tus neeg sawv cev sab xis yuav tsum tau siv los ua cov tuab dua, uas tuaj yeem txhim kho lub zog tensile thiab tiv thaiv lub zog tiv thaiv.
Lub Sijhawm Post: Apr-28-2024