Hydroxypropyl starch ether (HPS)lecellulose etherke li-additives tse peli tse tloaelehileng tsa kaho ea lik'hemik'hale, tse sebelisoang haholo linthong tsa mohaho, tse kang seretse, putty powder, li-coatings, joalo-joalo Le hoja li na le lintho tse tšoanang ho tse ling, ho na le phapang e khōlō likarolong tse ngata tse kang mehloli e tala, mehaho ea lik'hemik'hale, thepa ea 'mele. , liphello tsa kopo, le litšenyehelo.
1. Mehloli ea lihlahisoa tse tala le sebopeho sa lik'hemik'hale
Hydroxypropyl starch ether (HPS)
HPS e ipapisitse le starch ea tlhaho mme e fumanoa ka karabelo ea phetoho ea etherification. Lisebelisoa tsa eona tse ka sehloohong ke poone, koro, litapole le limela tse ling tsa tlhaho. Limolek'hule tsa starch li entsoe ka li-unit tsa tsoekere tse kopantsoeng ke li-bond tsa α-1,4-glycosidic le palo e nyane ea α-1,6-glycosidic bond. Ka mor'a hydroxypropylation, sehlopha sa hydrophilic hydroxypropyl se kenngoa ka har'a mohaho oa limolek'hule oa HPS, ho fana ka ts'ebetso e itseng ea ho tiisa, ho boloka metsi le ho fetola mesebetsi.
cellulose ether
Li-cellulose ethers li tsoa ho cellulose ea tlhaho, joalo ka k'hothone kapa lehong. Cellulose e entsoe ka li-unit tsa tsoekere tse hokahantsoeng ke li-bond tsa β-1,4-glycosidic. Li-cellulose ethers tse tloaelehileng li kenyelletsa hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), hydroxyethyl cellulose (HEC), joalo-joalo. Metsoako ena e hlahisa li-substituent tse fapaneng ka ho itšoara ka etherification le ho ba le botsitso bo phahameng ba lik'hemik'hale le thepa ea 'mele.
2. Lintho tsa 'mele
Litšobotsi tsa ts'ebetso ea HPS
Ho teteana: HPS e na le phello e ntle ea ho tenya, empa ha e bapisoa le cellulose ether, matla a eona a ho teteana a fokola hanyane.
Ho boloka metsi: HPS e na le ho boloka metsi ka mokhoa o itekanetseng 'me e loketse lisebelisoa tsa mohaho tse tlaase ho isa bohareng.
Ho sebetsa: HPS e ka ntlafatsa ts'ebetso ea seretse le ho fokotsa ho theoha nakong ea kaho.
Ho hanyetsa mocheso: HPS e na le kutloelo-bohloko haholo ho mocheso 'me e angoa haholo ke mocheso oa tikoloho.
Litšobotsi tsa ts'ebetso ea cellulose ethers
Thickening: Cellulose ether e na le phello e matla ea ho tiea 'me e ka eketsa viscosity ea seretse kapa putty haholo.
Ho boloka metsi: Cellulose ether e na le thepa e babatsehang ea ho boloka metsi, haholo-holo libakeng tse phahameng tsa mocheso, tse ka eketsang nako ea ho bula seretse le ho thibela tahlehelo e feteletseng ea metsi.
Mosebetsi: Cellulose ether e ntle haholo ho ntlafatseng ts'ebetso 'me e ka fokotsa ka katleho mathata a kang ho petsoha le phofo.
Ho hanyetsa mocheso: Cellulose ether e na le matla a ho ikamahanya le maemo a fetohang mocheso le ts'ebetso e batlang e tsitsitse.
3. Liphello tsa kopo
Tšebeliso ea phello eaHPS
Ka seretse se omeletseng, HPS e bapala karolo ea ho ntlafatsa ts'ebetso, ho ntlafatsa ho boloka metsi, le ho fokotsa delamination le karohano. E na le chelete ebile e loketse ho sebelisoa maemong a nang le litlhoko tse phahameng tsa taolo ea litšenyehelo, joalo ka bokahare bo tloaelehileng ba putty powder, seretse sa boemo bo tlase, jj.
Phello ea ts'ebeliso ea cellulose ether
Li-cellulose ethersli sebelisoa haholo liretseng tse sebetsang hantle haholo, likhomaretsi tsa lithaele, lisebelisoa tse thehiloeng ho gypsum le litsamaiso tsa kantle tsa lebota. Thepa ea eona e phahameng ka ho fetisisa ea ho tiisa le ho boloka metsi e ka ntlafatsa haholo matla a ho tlamahane le ts'ebetso e khahlanong le ho thella ha thepa, 'me e loketse ka ho khetheha merero e nang le litlhoko tse phahameng mabapi le ts'ebetso ea kaho le boleng ba sehlahisoa se felileng.
4. Litšenyehelo le tšireletso ea tikoloho
litšenyehelo:
HPS e na le theko e tlase mme e loketse ho sebelisoa limmarakeng tse sa tsotelleng litheko. Li-cellulose ethers li batla li le theko e boima, empa li na le ts'ebetso e ntle haholo 'me li na le litšenyehelo tse ngata mererong e boima ea kaho.
Tšireletso ea tikoloho:
Ka bobeli li tsoa linthong tsa tlhaho 'me li na le thepa e ntle ea tikoloho. Leha ho le joalo, hobane ho sebelisoa li-reagents tse fokolang tsa lik'hemik'hale nakong ea tlhahiso ea HPS, boima ba eona ba tikoloho bo ka ba tlase.
5. Motheo oa khetho
Litlhoko tsa ts'ebetso: Haeba u na le litlhoko tse phahameng tsa thepa ea ho tiisa le ho boloka metsi, u lokela ho khetha cellulose ether; bakeng sa lisebelisoa tse baballang litšenyehelo empa li hloka lintlafatso tse itseng tsa ho sebetsa, o ka nahana ka ho sebelisa HPS.
Maemo a ts'ebeliso: Ho hahoa ha mocheso o phahameng, ho kenngoa ha marako ka ntle, sekhomaretsi sa lithaele le maemo a mang a hlokang ts'ehetso ea ts'ebetso e phahameng li loketse haholoanyane bakeng sa cellulose ether; bakeng sa putty e tloaelehileng ea ka hare kapa seretse sa motheo, HPS e ka fana ka tharollo ea moruo le e sebetsang.
Hydroxypropyl starch etherlecellulose ether se seng le se seng se na le melemo ea sona 'me se bapala likarolo tse fapaneng tsa thepa ea ho haha. Khetho e hloka ho nahanoa ka botlalo ho ipapisitse le litlhoko tsa ts'ebetso, taolo ea litšenyehelo, tikoloho ea kaho le lintlha tse ling tsa morero o ikhethileng ho fihlela ts'ebeliso e ntle ka ho fetisisa.
Nako ea poso: Nov-21-2024