Penta ea 'Nete ea Lejoe e nang le Cellulose Ether

Tšusumetso ea palo ea cellulose ether, boima ba limolek'hule le mokhoa oa ho fetola mokhoa oa ho monya metsi le ho soeufala ha pente ea 'nete ea lejoe e tšohloa,' me cellulose ether e nang le khanyetso e ntle ka ho fetisisa ea ho soeufala ha metsi ea pente ea majoe ea 'nete e hlahlojoa,' ts'ebetso e pharaletseng ea pente ea sebele ea majoe e hlahlojoa ho lemoha.

Mantsoe a bohlokoa:pente ea sebele ea majoe;ho hanyetsa ho soeufala ha metsi;cellulose ether

0,Selelekela

Varnish ea lejoe la 'nete ke lerako la lehlabathe la resin emulsion le entsoeng ka granite ea tlhaho, lejoe le sithabetseng le phofo ea majoe e le kakaretso, emulsion ea maiketsetso e le lisebelisoa tsa motheo mme e tlatselletsoa ka li-additives tse fapaneng.E na le sebopeho le phello e khabisitsoeng ea lejoe la tlhaho.Morerong oa mokhabiso oa kantle oa meaho e phahameng, o ratoa ke beng ba bangata le lihahi.Leha ho le joalo, matsatsing a lipula, ho monya metsi le ho soeufala ho fetohile bothata bo boholo ba pente ea sebele ea majoe.Le hoja ho na le lebaka le leholo la emulsion, ho eketsoa ha lintho tse ngata tsa hydrophilic tse kang cellulose ether ho eketsa haholo ho kenngoa ha metsi a filimi ea sebele ea pente ea majoe.Thutong ena, ho tloha matsohong a cellulose ether, tšusumetso ea palo ea cellulose ether, boima ba molek'hule le mofuta oa phetoho holim'a ts'ebetso ea ho monya metsi le ho soeufala ha pente ea majoe ea sebele e ile ea hlahlojoa.

1. Mokhoa oa ho monya metsi le ho soeufala ha pente ea sebele ea majoe

Ka mor'a hore pente ea 'nete ea majoe e omisitsoe, e atisa ho soeufala ha e kopana le metsi, haholo-holo nakong ea pele ea ho omisa (12h).Nakong ea lipula, ho roala ho tla ba bonolo le ho ba tšoeu ka mor'a ho hlatsuoa ke pula nako e telele.Lebaka la pele ke hore emulsion e monya metsi, 'me ea bobeli e bakoa ke lintho tsa hydrophilic tse kang cellulose ether.Cellulose ether e na le mesebetsi ea ho tiisa le ho boloka metsi.Ka lebaka la ho kenngoa ha li-macromolecules, ho phalla ha tharollo ho fapane le ho Newtonian fluid, empa ho bontša boitšoaro bo fetohang ka phetoho ea matla a ho kuta, ke hore, e na le thixotropy e phahameng.Ntlafatsa ts'ebetso ea kaho ea pente ea 'nete ea majoe.Cellulose e entsoe ka D-glucopyranosyl (anhydroglucose), 'me mokhoa oa eona o bonolo oa molek'hule ke (C6H10O5)n.Cellulose ether e hlahisoa ke cellulose alcohol hydroxyl sehlopha le alkyl halide kapa ntho e 'ngoe ea etherification tlas'a maemo a alkaline.Sebopeho sa Hydroxyethyl cellulose ether, palo e tloaelehileng ea lihlopha tsa hydroxyl tse nkeloang sebaka ke li-reagents ka unit ea anhydroglucose ho ketane ea molek'hule ea cellulose e bitsoa degree of substitution, lihlopha tsa 2, 3, le 6 tsa hydroxyl kaofela li nkeloa sebaka, 'me tekanyo e phahameng ea ho nka sebaka ke 3. Lihlopheng tsa mahala tsa hydroxyl tse holim'a ketane ea molek'hule ea cellulose ether li ka sebelisana ho etsa li-hydrogen bond, 'me li ka boela tsa sebelisana le metsi ho etsa li-hydrogen bond.Ho kenngoa ha metsi le ho boloka metsi a cellulose ether ho na le tšusumetso e tobileng ho monyeng ha metsi le ho soeufala ha pente ea sebele ea majoe.Ts'ebetso ea ho monya metsi le ho boloka metsi ea cellulose ether e ipapisitse le boemo ba ho nkela cellulose sebaka, li-substituents le tekanyo ea polymerization ea cellulose ether ka boeona.

2. Karolo ea teko

2.1 Lisebelisoa le lisebelisoa tsa liteko

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2.2 Foromo ea teko

2.3 Ts'ebetso ea liteko

Eketsa metsi, defoamer, bactericide, antifreeze, thuso ea ho etsa filimi, selulose, pH regulator le emulsion ho disperser ho ea ka mokhoa oa ho hasanya ka mokhoa o ts'oanang, ebe o eketsa lehlabathe le mebala le ho hlohlelletsa hantle, ebe o sebelisa tekanyo e lekaneng ea thickener Fetola viscosity. , hasana ka ho lekana, 'me u fumane pente ea sebele ea majoe.

Etsa boto e nang le pente ea 'nete ea majoe,' me u etse tlhahlobo ea ho hloekisa metsi ka mor'a ho phekola lihora tse 12 (ho qoelisoa metsing ka lihora tse 4).

2.4 Teko ea tšebetso

Ho ea ka JG/T 24-2000 "Synthetic Resin Emulsion Sand Wall Paint", tlhahlobo ea ts'ebetso e etsoa, ​​​​e lebisang tlhokomelo ea ho hanyetsa metsi a mangata a fapaneng a hydroxyethyl cellulose ether ea majoe a majoe a majoe, le matšoao a mang a theknoloji a tlameha ho finyella litlhoko.

3. Liphetho le lipuisano

Ho ea ka litšoaneleho tsa ts'ebetso ea hydroxyethyl cellulose ether, liphello tsa palo ea hydroxyethyl cellulose ether, boima ba molek'hule le mokhoa oa ho fetola mokhoa oa ho thibela metsi oa pente ea majoe ea sebele e ile ea ithutoa ka matla.

3.1 Phello ea litekanyetso

Ka keketseho ea palo ea hydroxyethyl cellulose ether, ho hanyetsa metsi a pente ea 'nete ea majoe ho ntse ho senyeha butle-butle.Ha palo e kholo ea cellulose ether, palo ea lihlopha tsa mahala tsa hydroxyl e ntse e eketseha, metsi a mangata a tla theha maqhama a haedrojene le eona, tekanyo ea ho monya metsi ea filimi ea pente ea majoe e tla eketseha, 'me ho hanyetsa metsi ho tla fokotseha.Ha metsi a mangata ka filimi ea pente, ho bonolo ho hloekisa holim'a metsi, kahoo ho hanyetsa ha metsi ho mpefala.

3.2 Phello ea boima ba molek'hule

Ha palo ea hydroxyethyl cellulose ethers e nang le mefuta e fapaneng ea molek'hule e tšoana.Ha palo ea limolek'hule e le kholoanyane, ho mpefala ha metsi ho hanyetsa pente ea 'nete ea lejoe, e leng se bontšang hore boima ba molek'hule oa hydroxyethyl cellulose ether bo na le phello ea ho thibela metsi ho soeufala ha pente ea sebele ea majoe.Sena se bakoa ke hore litlamo tsa lik'hemik'hale > li-hydrogen bond > van der Waals force, ho ba le boima bo bongata ba molek'hule ea cellulose ether, ke hore, tekanyo e kholo ea polymerization, ho ba le likamano tse ngata tsa lik'hemik'hale tse entsoeng ka ho kopana ha likarolo tsa tsoekere, 'me ho feta matla a ho sebelisana a tsamaiso eohle ka mor'a ho theha maqhama a haedrojene ka metsi, matla a ho monya metsi le ho boloka metsi a matla, ho mpefala ha metsi a soeufala ho hanyetsa pente ea sebele ea majoe.

3.3 Tšusumetso ea mokhoa oa ho fetola

Liphetho tsa liteko li bontša hore phetoho ea nonionic hydrophobic e molemo ho feta ea pele, 'me phetoho ea anionic ke eona e mpe ka ho fetisisa.Non-ionic hydrophobically modified cellulose ether, ka ho hlomathisa lihlopha tsa hydrophobic ka ketane ea molek'hule ea cellulose ether.Ka nako e ts'oanang, ho teteka ha karolo ea metsi ho finyelloa ka ho kopanya ha haedrojene ea metsi le ketane ea limolek'hule.Ts'ebetso ea hydrophobic ea sistimi e fokotsehile, e le hore ts'ebetso ea hydrophobic ea pente ea 'nete ea majoe e ntlafatsoe,' me ho hanyetsa ha metsi ho ntlafala.Anionically modified cellulose ether e fetotsoe ke selulose le polyhydroxysilicate, e ntlafatsang katleho e kholo, ts'ebetso ea anti-sag le ts'ebetso ea anti-splash ea cellulose ether, empa ionicity ea eona e matla, 'me matla a ho monya le ho boloka metsi a ntlafatsoa, ​​​​Ho hanyetsa metsi ho soeufala. ea pente ea sebele ea majoe e ba mpe le ho feta.

4. Qetello

Ho kenngoa ha metsi le ho soeufala ha pente ea majoe ea sebele ho angoa ke lintlha tse ngata tse kang palo ea cellulose ether le mokhoa oa ho fetola boima ba molek'hule.Ho monya metsi le ho soeufala ha pente ea majoe ea 'nete.