Li-ether tsa starchke di-polymer tse qhibilihang ka metsing tse entsweng ka starch ya tlhaho ka phetoho ya dikhemikhale kapa ya mmele. Di sebediswa haholoholo kahong e le di-additives ho boloka metsi, ho teteana, ho ntlafatsa bokgoni ba ho sebetsa, le ho ntlafatsa thepa ya rheological ya thepa. Hangata di nkuwa ho di-starch tsa dimela tse kang poone, litapole le cassava. Dihlopha tsa ether di hlahiswa ka karabelo ya etherification, e fetolang ho qhibiliha ha tsona, botsitso le thepa ya ho teteana, e di nolofalletsang ho sebetsa dibakeng tsa alkaline le ditsamaisong tse rarahaneng.
Indastering ea kaho, li-starch ether li sebelisoa hangata lits'ebetsong tsa seretse se kopantsoeng ka mokhoa o omileng joalo ka likhomaretsi tsa lithaele, phofo ea putty ea leboteng ea kahare le kantle, li-insulation mortars, le thepa ea ho ikatisa e thehiloeng ho gypsum kapa samente. Tšebeliso ea tsona hangata e tlase haholo, hangata e pakeng tsa 0.02% le 0.1%, empa li ka ntlafatsa haholo ts'ebetso. Mekhoa e meholo ea ts'ebetso e kenyelletsa:
Ho lokisa botsitso le rheology: Li-ether tsa starch lia ruruha ka metsing ho etsa tharollo e nang le viscous. Ha li sebelisoa hammoho le li-thickeners tse ling (tse kang hydroxypropyl methylcellulose (HPMC) le hydroxyethyl methylcellulose (MHEC), li ka ntlafatsa boleng ba chai le thixotropy ea seretse, li netefatsa phallo e ntle nakong ea ts'ebeliso le ho fokotseha ha ho thella ha metsi kamora ho ema.
Ho ntlafatsa ho boloka metsi: Limolek'hule tsa starch tse fetotsoeng li rata metsi haholo, lia monya le ho notlela ka metsing, li fokotsa ho monngoa ha metsi le mouoane ho tloha substrate, li netefatsa hore samente kapa gypsum li na le metsi a lekaneng, 'me li ntlafatsa matla le ho khomarela.
Ho Thibela ho thekesela le ho tsoa mali: Likhomaretsing tsa lithaele kapa lits'ebetsong tse otlolohileng, li-starch ether li ka ntlafatsa thepa ea seretse e thibelang ho thekesela. Lisebelong tse ikamahanyang le maemo kapa tse nang le ho teteana ho honyenyane, li ka fokotsa ho tsoa mali le ho netefatsa bokaholimo bo boreleli.
Ho ntlafatsa maikutlo a ho sebelisa: Li etsa hore ho hohla le ho hasanya ho be bonolo, li fokotsa "ho khomarela thipa," li ntlafatsa katleho ea ho sebelisa le boleng ba sehlahisoa sa ho qetela.
Hangata li-starch ether li sebelisoa hammoho le li-cellulose ether (HPMC, HEMC, le MHEC) mefuteng. Li-cellulose ether li fana ka thepa ea mantlha ea ho boloka metsi le ho teteana, ha li-starch ether li fetola thixotropy le ho tsitsa ha seretse, ho fihlela bokhoni bo leka-lekaneng ba ho sebetsa. Mohlala, mefuteng ea sekhomaretsi sa tile, tekanyo e loketseng ea starch ether e ka fokotsa ho tsitlella ho bakoang ke li-cellulose ether tse nang le viscosity e phahameng, e leng se etsang hore seretse se be bonolo ho se sebelisa. Phofong ea putty, e ka ntlafatsa boreleli le ho fokotsa kotsi ea ho nyenyefala le ho petsoha.
Litšebelisong tsa kaho, li-starch ether li fana ka melemo e latelang ea ts'ebetso:
Botsoalle ba tikoloho: Li entsoe ka starch ea limela tsa tlhaho, lia bola 'me li na le tšusumetso e fokolang tikolohong.
Katleho ea litšenyehelo: Maemo a tlase a tšebeliso a hlahisa lintlafatso tse kholo, a fokotsa ho itšetleha ka lintho tse ling tse turang.
Ho ikamahanya le sebopeho: E loketse di-mortar tse thehilweng hodima samente, tse thehilweng hodima gypsum, le tse kopaneng, mme e tsamaellana le mefuta e fapaneng ya di-additives.
Ho fapaneether ea starchMefuta le mekhoa ea phetoho li fella ka sekhahla se fapaneng sa ho qhibiliha, bokhoni ba ho teteana, khanyetso ea alkali le botsitso. Ka hona, lits'ebetsong tse sebetsang, ho bohlokoa ho khetha mofuta o nepahetseng ho latela sistimi ea ho etsa, tikoloho ea kaho, le ts'ebetso e reriloeng, le ho fumana tekanyo e nepahetseng ka ho etsa liteko. Starch ether ke tlatsetso ea "tekanyo e nyane, phello e kholo" thepa ea kaho. E ntlafatsa haholo rheology ea seretse, ho boloka metsi le ho sebetsa hantle, e ntlafatsa haholo katleho ea kaho le boleng ba sehlahisoa se felileng. Ke tlatsetso e sebetsang ea bohlokoa haholo lits'ebetsong tsa seretse sa sejoale-joale se nang le motsoako o omileng.
Nako ea poso: Phato-11-2025