Cellulose ether mu zomangira zoteteza chilengedwe

Ntchito ndi kugwiritsa ntchito cellulose ether mu zomangira zoteteza chilengedwe

Cellulose etherndi si-ionic theka-kupanga polima, madzi sungunuka ndi zosungunulira awiri, m'mafakitale osiyana chifukwa ndi udindo ndi osiyana, monga mu mankhwala zomangira, ali ndi zotsatira gulu:

① wosunga madzi

② chokhuthala

③ kusanja

④ kupanga mafilimu

⑤ binder;

M'makampani a PVC, ndi emulsifier, dispersant; M'makampani opanga mankhwala, ndi mtundu wa binder komanso kutulutsa pang'onopang'ono mafupa azinthu, chifukwa mapadi amakhala ndi zotsatira zosiyanasiyana, choncho ndi gawo lomwe limagwiritsidwa ntchito kwambiri. Pansipa ndimayang'ana pakugwiritsa ntchito cellulose ether muzomangamanga zoteteza chilengedwe ndi gawo.

1. utoto wa latex

Mu mzere wa penti wa latex, kusankha hydroxyethyl cellulose, makulidwe ambiri a mamasukidwe akayendedwe ndi RT3000-50000cps, mlingo wotchulidwa nthawi zambiri ndi 1.5 ‰ -2 ‰. Udindo waukulu wa hydroxyethyl mu utoto lalabala utoto ndi thicken, kuteteza pigment gelation, zimathandiza kuti kubalalitsidwa pigment, latex, bata, ndipo akhoza kusintha mamasukidwe akayendedwe a zigawo zikuluzikulu, zimathandiza kuti kusanja ntchito yomanga: Hydroxyethyl mapadi ndi yosavuta kugwiritsa ntchito, imatha kusungunuka m'madzi ozizira komanso otentha, ndipo sichimakhudzidwa ndi mtengo wa PH, ingagwiritsidwe ntchito pakati pa PH mtengo 2 ndi 12, kugwiritsa ntchito njira zitatu zotsatirazi:

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I. Onjezani mwachindunji:

Pakuti njira imeneyi, hydroxyethyl mapadi kuchedwa mtundu - hydroxyethyl mapadi ndi Kutha nthawi ya mphindi 30 ayenera kusankhidwa. Ndondomeko ndi motere: (1) kukhala mkulu ayenera kudula blender chidebe ndi kuchuluka madzi oyera (2) anthu anayamba pang'onopang'ono oyambitsa mosalekeza, pa nthawi yomweyo pang'onopang'ono kuwonjezera hydroxyethyl wogawana ndi yankho la (3) kupitiriza kusonkhezera mpaka onse. chonyowa granular zipangizo (4) kuti agwirizane zina zina ndi zina zamchere (5) chipwirikiti mpaka kwathunthu kusungunuka onse hydroxyethyl, kuwonjezera zigawo zina za chilinganizo, akupera kuti yomalizidwa mankhwala.

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ⅱ. Zokhala ndi mowa wamayi:

Njirayi imatha kusankha kusala - kusungunuka kwa cellulose, ndipo imakhala ndi mildew - umboni. Ubwino wa njirayi ndi kukhala ndi kusinthasintha kwakukulu, kujowina utoto wa emulsioni mwachindunji, kupanga njira yofanana ndi ①-④ sitepe ndi yofanana.

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ⅲ, ndi phala ntchito:

Popeza zosungunulira organic ndi osauka solvents (insoluble) kwa hydroxyethyl, angagwiritsidwe ntchito pokonza phala. Zomwe zimagwiritsidwa ntchito kwambiri ndi zosungunulira zamadzimadzi zomwe zimapangidwira muzojambula za latex, monga ethylene glycol, propylene glycol ndi mafilimu opanga mafilimu (monga diethylene glycol butyl acetate), phala la hydroxyethyl cellulose likhoza kuwonjezeredwa mwachindunji ku utoto, mutatha kuwonjezera, pitirizani kusonkhezera mpaka kusungunuka kwathunthu.

2. kukwapula khoma putty

Pakalipano, China ili m'mizinda yambiri yamadzi kukana, kukana swab ya chitetezo cha chilengedwe putty wakhala makamaka anatengedwa mozama ndi anthu, mu zaka zingapo zapitazo, chifukwa putty wopangidwa ndi kumanga guluu kuwala kuwononga mpweya formaldehyde kuwononga thanzi la anthu, nyumba. guluu amapangidwa ndi polyvinyl mowa ndi formaldehyde acetal reaction. Choncho nkhaniyi pang'onopang'ono inathetsedwa ndi anthu, ndi m'malo mwa zinthu zimenezi ndi mapadi efa mndandanda wa mankhwala, ndiko kunena kuti, chitukuko cha zomangira chitetezo chilengedwe, mapadi ndi mtundu okhawo zinthu pakali pano.

M'madzi osamva putty amagawidwa kukhala owuma ufa putty ndi putty phala mitundu iwiri, mitundu iwiri ya putty nthawi zambiri amasankha kusinthidwa methyl cellulose ndi hydroxypropyl methyl mitundu iwiri, kukhuthala kwa kukhuthala kumakhala mu 3000-60000cps pakati pa zoyenera kwambiri, mu gawo lalikulu la cellulose mu putty ndi kusunga madzi, kugwirizana, mafuta, etc..

Chifukwa putty chilinganizo cha wopanga aliyense si yemweyo, ena ndi imvi kashiamu, kuwala kashiamu, woyera simenti, ena ndi gypsum ufa, imvi kashiamu, kuwala kashiamu, etc., kotero specification mamasukidwe akayendedwe ndi kulowetsedwa kuchuluka kwa mapadi mwa njira ziwiri. sizili zofanana, kuchuluka kwa kuwonjezera ndi 2 ‰ -3 ‰ kapena choncho.

Pakuwomba khoma kukhala wotopa ndi kumanga kwa ana, maziko a khoma amakhala ndi zotengera zina (khoma la njerwa la kuchuluka kwake kunali 13%, konkire ndi 3-5%), kuphatikiza ndi nthunzi wakunja, kotero ngati mukutopa ndi mwana. Kutaya madzi mofulumira kwambiri, kungachititse kuti mng'alu kapena chodabwitsa monga mungu, kuti mphamvu ya putty yafooke, choncho, pambuyo polowa mapadi ether adzathetsa vutoli. Koma mtundu wa zinthu zodzazitsa, makamaka mtundu wa calcium imvi ndiwofunikanso kwambiri. Chifukwa cha kukhuthala kwakukulu kwa cellulose, kumapangitsanso kusungunuka kwa putty, ndikupewa zochitika zakuyenda komwe kumapachikidwa pakumanga, ndipo kumakhala komasuka komanso kupulumutsa ntchito pambuyo pakupala.

3. matope a konkire

Mu matope konkire, kwenikweni kukwaniritsa mphamvu mtheradi, ayenera kupanga simenti hydration anachita kwathunthu, makamaka m'chilimwe, pomanga konkire matope kutaya madzi mofulumira, miyeso kwathunthu hydrated pa kuchiritsa madzi, njira imeneyi ndi kuwononga gwero madzi ndi ntchito zovuta, chinsinsi basi pamwamba, madzi ndi hydration akadali si kwathunthu, kotero njira zothetsera vutoli, Mu matope konkire zambiri kusankha kuwonjezera hydroxypropyl methyl cellulose kapena methyl cellulose, kukhuthala specifications pakati 20000-60000cps, kuwonjezera kuchuluka. wa 2 ‰–3 ‰ kapena kotero, madzi posungira mlingo akhoza ziwonjezeke kwa oposa 85%, mu matope konkire ntchito njira youma ufa wogawana wosakaniza pambuyo kuwonjezera madzi.

4. gypsum penti, gypsum yomangira, gypsum caulking

Ndikukula kwachangu kwamakampani omanga, kufunikira kwa anthu kwa zida zomangira zatsopano kukuchulukiranso tsiku ndi tsiku, chifukwa chakuwonjezeka kwa kuzindikira kwa anthu zachitetezo cha chilengedwe komanso kupititsa patsogolo ntchito zomanga, zinthu za simenti za gypsum zakhala zikukula mwachangu. Pakali pano katundu wamba wa gesso ali ndi stucco gesso, caking gesso, set gesso, choyika matayala chodikirira.

Pulasita ndi mtundu wabwino kwambiri wa mkati khoma ndi denga pulasitala zakuthupi, ndi misozi khoma ndi wosakhwima ndi yosalala, musagwetse ufa, ndi m'munsi chomangira mwamphamvu, palibe akulimbana chodabwitsa, ndi ntchito kupewa moto; Zomatira gypsum ndi mtundu watsopano wa zomangamanga kuwala bolodi zomatira, gypsum monga zakuthupi m'munsi, kuphatikiza zosiyanasiyana zina ndi opangidwa ndi zinthu zomata, ndi oyenera mitundu yonse ya zinthu zomangira khoma zomangira, ndi sanali poizoni, zoipa, oyambirira. mphamvu ndi kukhazikika kwachangu, kumangiriza ndi bolodi yomangira, zida zothandizira zomangamanga; Wothandizira kudzaza msoko wa gypsum ndi mbale ya gypsum pakati pa zinthu zodzaza mipata ndi khoma, kudzaza ming'alu.

Zogulitsa za gypsumzi zimakhala ndi ntchito zosiyanasiyana, kuphatikizapo gypsum ndi zowonjezera zowonjezera kuti zigwire ntchito, chinthu chofunika kwambiri ndi zowonjezera zowonjezera za cellulose ether zimagwira ntchito yaikulu. Chifukwa cha gesso cent alibe madzi gesso ndi senti ya theka madzi gesso, osiyana gesso ndi wosiyana ndi zotsatira ntchito ya mankhwala, kuonjezera wandiweyani, kuteteza madzi, wosakwiya coagulate khalidwe amasankha gesso zomangira. Vuto lodziwika bwino la zida izi ndikusweka kwa ng'oma yopanda kanthu, mphamvu zoyambira sizikwanira, kuti muthane ndi vutoli, ndikusankha mtundu wa cellulose ndi retarding wothandizira pawiri kugwiritsa ntchito vuto, pankhani iyi, kusankha wamba kwa methyl kapena hydroxypropyl methyl. 30000–60000cps, kuwonjezera kuchuluka ndi 1.5 ‰–2 ‰ pakati, cholinga cha cellulose ndikusunga madzi ndikuchepetsa mafuta.

Komabe, mu izi kudalira mapadi efa monga retarder si mpaka, ayenera kuwonjezera citric asidi retarder pambuyo ntchito wosanganiza sizingakhudze mphamvu koyamba.

Mlingo wosunga madzi nthawi zambiri umatanthawuza kuchuluka kwa madzi omwe amatayika popanda kuyamwa kwamadzi kunja. Ngati khomalo ndi louma, pamwamba pake pamakhala madzi ndipo kutuluka kwachilengedwe kumapangitsa kuti zinthuzo ziwonongeke kwambiri, komanso padzakhala ng'oma yopanda kanthu ndi zochitika zosweka.

Njira yogwiritsira ntchito iyi ndi kusakaniza ufa wouma, ngati kukonzekera yankho kungatanthauze njira yokonzekera yothetsera.

5. matope otsekemera

Thermal insulation mortar ndi mtundu watsopano wamkati wamkati wamkati wamatenthedwe otenthetsera zida kumpoto kwa China. Ndi khoma zinthu apanga ndi matenthedwe kutchinjiriza zakuthupi, matope ndi binder. Pankhani iyi, cellulose imagwira ntchito yofunika kwambiri pakulumikizana ndikuwonjezera mphamvu. Nthawi zambiri, methyl cellulose yokhala ndi kukhuthala kwakukulu (pafupifupi 10000eps) imasankhidwa, ndipo mlingowo umakhala pakati pa 2 ‰ ndi 3 ‰. Njira yogwiritsira ntchito ndikusakaniza ufa wouma.

6. mawonekedwe wothandizira

Wothandizira mawonekedwe ndi HPMC20000cps, chomangira matayala ndi choposa 60000cps, ndipo mawonekedwe ogwiritsira ntchito amagwiritsidwa ntchito ngati thickener, omwe amatha kupititsa patsogolo mphamvu zamakokedwe ndi mphamvu ya muvi.