Starch ether e sebelisoa haholo-holo ka seretse sa kaho, se ka amang ho tsitsa ha seretse se thehiloeng ho gypsum, samente le kalaka, le ho fetola kaho le ho hanyetsa sag ea seretse.Hangata li-ether tsa starch li sebelisoa hammoho le li-cellulose ethers tse sa fetoloang le tse fetotsoeng.E loketse mekhoa ea bobeli e sa nke lehlakore le ea alkaline, 'me e lumellana le lisebelisoa tse ngata tsa gypsum le lihlahisoa tsa samente (tse kang li-surfactants, MC, starch le polyvinyl acetate le li-polymer tse ling tse qhibilihisang metsi).
Litšobotsi tsa starch ether haholo-holo tse kang tse latelang:
(1) Ntlafatsa khanyetso ea sag;
(2) Ntlafatsa mokhoa oa ho haha;
(3) Kotulo e phahameng ea seretse.
Mosebetsi o ka sehloohong oa starch ether ka seretse se omeletseng se thehiloeng ho gypsum ke sefe?
Karabo: Starch ether ke e 'ngoe ea li-additives tse ka sehloohong tsa seretse se omeletseng sa phofo.E ka lumellana le li-additives tse ling.E sebelisoa haholo ka likhomaretsi tsa lithaele, lirekere tsa ho lokisa, gypsum ea plastering, putty ea ka hare le kantle ea lebota, lisebelisoa tsa gypsum-based caulking and filling, li-interface agents, masonry Ka liretse, e boetse e loketse ho sebelisoa ka letsoho kapa ho fafatsa ka samente e thehiloeng kapa gypsum. -e thehiloeng seretse.E sebetsa ka tsela e latelang:
(1) Hangata starch ether e sebelisoa hammoho le methyl cellulose ether, e bontšang phello e ntle ea synergistic pakeng tsa tse peli.Ho eketsa tekanyo e loketseng ea starch ether ho methyl cellulose ether ho ka ntlafatsa haholo ho hanyetsa sag le khanyetso ea ho thella ha seretse, ka boleng bo phahameng ba chai.
(2) Ho eketsa tekanyo e loketseng ea starch ether seretseng se nang le methyl cellulose ether ho ka eketsa haholo ho tsitsisa ha seretse, ho ntlafatsa mokelikeli, le ho etsa hore mohaho o be bonolo le o boreleli.
(3) Ho eketsa tekanyo e loketseng ea starch ether seretseng se nang le methyl cellulose ether ho ka eketsa ho boloka metsi a seretse le ho lelefatsa nako e bulehileng.
Melemo ea ts'ebeliso le mekhoa ea ho boloka starch ether ke efe?
Karabo: E ka sebelisoa e le motsoako oa lihlahisoa tse entsoeng ka samente, lihlahisoa tse entsoeng ka gypsum le lihlahisoa tsa ash-calcium.
(1) Melemo le lisebelisoa:
a.E na le phello e teteaneng holim'a seretse, e ka teteana ka potlako, 'me e na le lubricity e ntle;
b.Tekanyo e nyane, mme tekanyo e tlase haholo e ka fihlela phello e phahameng;
c.Ntlafatsa bokhoni ba anti-slide ba seretse se tlanngoeng;
d.eketsa nako e bulehileng ea thepa;
e.Ntlafatsa ts'ebetso ea ts'ebetso ea lisebelisoa le ho etsa hore ts'ebetso e be bonolo.
(2) Polokelo:
Sehlahiswa se hlaseleha habonolo ke mongobo mme se tlameha ho bolokoa sebakeng se omeletseng le se phodileng ka har'a sephutheloana sa pele.Ho molemo ho e sebelisa nakong ea likhoeli tse 12.(E khothaletsoa ho sebelisoa hammoho le high-viscosity cellulose ether, 'me karolelano e akaretsang ea cellulose ether ho starch ether ke 7:3~8:2)
Karolo ea methyl cellulose ether ka seretse se ommeng ke sefe?
A: Methyl hydroxyethyl cellulose ether (MHEC) le methyl hydroxypropyl cellulose ether (HPMC) ka kakaretso li bitsoa methyl cellulose ether.
Lefapheng la seretse sa phofo se omeletseng, methyl cellulose ether ke ntho ea bohlokoa e fetotsoeng bakeng sa seretse sa phofo se omeletseng joalo ka seretse sa plastering, plastering gypsum, sekhomaretsi sa lithaele, putty, thepa ea ho ikemela, seretse sa spray, sekhomaretsi sa Wallpaper le lintho tse entsoeng ka caulking.Lirapeng tse fapaneng tsa phofo, methyl cellulose ether e bapala karolo ea ho boloka metsi le ho teteana.
Mokhoa oa tlhahiso ea cellulose ether ke ofe?
Karabo: Taba ea pele, thepa e tala ea selulose e pshatlehile, ebe e alkalized ebe e phunyeletsoa tlas'a ketso ea soda ea caustic.Kenya olefin oxide (joalo ka ethylene oxide kapa propylene oxide) le methyl chloride bakeng sa etherification.Qetellong, ho hlatsoa le ho hloekisa metsi ho etsoa hore qetellong ho fumane phofo e tšoeu.Phofo ena, haholo-holo tharollo ea eona ea metsi, e na le litšobotsi tse thahasellisang tsa 'mele.Ether ea cellulose e sebelisoang indastering ea kaho ke methyl hydroxyethyl cellulose ether kapa methyl hydroxypropyl cellulose (e khutsufalitsoeng e le MHEC kapa MHPC, kapa lebitso le nolofalitsoeng haholoanyane MC).Sehlahisoa sena se phetha karolo ea bohlokoa haholo tšimong ea seretse se omeletseng sa phofo.karolo ea bohlokoa.
Nako ea poso: Jan-30-2023