(1) Kakaretso ea HPMC
Hydroxypropyl Methyl Cellulose (HPMC) ke ether e seng ionic cellulose e sebelisoang hangata ho thepa ea mohaho.HPMC e na le ho qhibiliha ha metsi ka mokhoa o babatsehang, ho boloka metsi, thepa ea ho etsa lifilimi le botsitso, 'me e sebelisoa haholo ho thepa ea mohaho e kang likhomaretsi tsa lithaele, putty powder, gypsum board le seretse se omileng.Likhomaretsing tsa lithaele tse thehiloeng ho samente, HPMC e bapala karolo ea bohlokoa, 'me karolo ea eona e bonahala haholo ho ntlafatsa ts'ebetso ea kaho, ho eketsa matla a maqhama, ho lelefatsa nako e bulehileng, le ho eketsa thepa e thibelang ho thella.
(2) Karolo ea HPMC ho li-adhesives tse entsoeng ka samente
1. Ho ntlafatsa ts'ebetso ea kaho
HPMC e ka ntlafatsa ka nepo ts'ebetso ea kaho ea likhomaretsi tsa lithaele tse thehiloeng ho samente, tse bonts'itsoeng ka kotloloho likarolo tse latelang:
Ho eketsa rheology: HPMC e eketsa viscosity ea sekhomaretsi ka phello ea eona e teteaneng, e etsa hore ho be bonolo ho jala le ho fetola, ka tsela eo ho ntlafatsa boiketlo ba kaho.Rheology e loketseng e etsa bonnete ba hore sekhomaretsi se ka etsa lera le kopanyang le tšoanang leboteng kapa fatše, e leng sa bohlokoa ka ho khetheha bakeng sa ho beha lithaele tse kholo.
Ntlafatsa ho boloka metsi: HPMC e na le bokhoni bo botle ba ho boloka metsi 'me e ka notlela metsi ka har'a sekhomaretsi ho thibela metsi ho tsoa mouoane kapele haholo.Sena ha se thuse feela hore samente e be metsi ka botlalo, empa hape e lelefatsa nako e bulehileng ea sekhomaretsi, e leng se lumellang basebetsi ba kaho nako e eketsehileng ea ho lokisa le ho lokisa boemo ba lithaele.
Ntlafatsa li-anti-slippage: Ha u beha lithaele, haholo-holo lithaele tse kholo maboteng a emeng, bothata ba ho thella ha lithaele hangata bo tšoenya basebetsi ba kaho.HPMC e eketsa viscosity ea sekhomaretsi, e lumella lithaele hore li fumane kapele matla a itseng a pele a tlamahano ka mor'a ho kenya, ka tsela eo e thibela ho thella.
2. Ntlafatsa matla a maqhama
HPMC e ka ntlafatsa haholo matla a tlamahano ea likhomaretsi tse thehiloeng ho samente hobane e ka bapala karolo ho lintlha tse latelang:
Khothaletsa samente hydration: Thepa ea ho boloka metsi ea HPMC e ka boloka mongobo ka har'a sekhomaretsi le ho khothaletsa hydration e felletseng ea samente.Mohaho oa lejoe la samente o entsoeng ke hydration e feletseng ea samente e teteaneng, kahoo e matlafatsa matla a tlamahano ea sekhomaretsi.
Phello e ntlafalitsoeng ea sebopeho: HPMC e ka etsa filimi e tšesaane ea polymer lipakeng tsa sekhomaretsi le thaele.Filimi ena e na le ho khomarela hantle le ho feto-fetoha ha maemo, e ka ntlafatsang ka katleho matla a sefahleho pakeng tsa sekhomaretsi le setsi sa motheo sa tile le ho ntlafatsa matla a ho kopanya ka kakaretso.
3. Nako e atolositsoeng ea ho bula
Nako e bulehileng e bua ka nako ea ho sebelisoa ha sekhomaretsi ho ea ho beha tile.Thepa ea ho boloka metsi le taolo ea rheological ea HPMC e ka eketsa nako e bulehileng ea sekhomaretsi sa lithaele tse thehiloeng ho samente, e bonts'ang haholo likarolo tse latelang:
Ho lieha ho fetoha mouoane oa metsi: Filimi ea polymer e entsoeng ke HPMC e ka fokotsa mouoane oa metsi ho tloha sekhomaretsing, e le hore sekhomaretsi se ka boloka ts'ebetso ka nako e telele.
Lula u le mongobo: Ka lebaka la hygroscopicity ea HPMC, sekhomaretsi se ka lula se le mongobo nako e telele, kahoo se atolosa fensetere ea ts'ebetso le ho eketsa nako ea ho lokisa le ho beha nako ea basebetsi ba kaho.
4. Keketseho ea ts'ebetso ea anti-slip
Ts'ebetso ea anti-slip e bolela ho hanyetsa ha lithaele ho falla ka lebaka la boima ba tsona kapa matla a kantle ha li behiloe feela.Litholoana tse teteaneng le tsa gelling tsa HPMC li ka ntlafatsa thepa e khahlanong le ho thella ea likhomaretsi tse thehiloeng ho samente likarolong tse latelang:
Ho ntlafatsa sekhomaretsi sa pele: HPMC e ntlafatsa sekhomaretsi sa pele sa sekhomaretsi, se lumella lithaele hore li fumane boemo bo tsitsitseng ka mor'a ho beha le ho fokotsa ho falla.
Ho theha sebopeho sa elastic: Sebopeho sa marang-rang se entsoeng ke HPMC ka sekhomaretsi se ka fana ka matla a itseng a ho hlaphoheloa a elastic, a phethang karolo ea bohlokoa ho hanela ho thella ha lithaele.
(3) Palo ea HPMC e sebelisoang ho li-adhesives tse entsoeng ka samente
Palo ea HPMC e ekelitsoeng hangata e khethoa ho latela litlhoko tse fapaneng tsa kopo, hangata lipakeng tsa 0.1% le 0.5%.Lits'ebetsong tsa 'nete, hoa hlokahala ho lokisa palo ho latela mokhoa o ikhethileng oa sekhomaretsi, maemo a kaho, le litlhaloso tsa lithaele ho fihlela phello e ntle.Ho eketsa HPMC e nyane haholo ho tla baka tlamahano e mpe, athe ho eketsa haholo ho ka eketsa litšenyehelo le ho ama ts'ebetso ea kaho.
(4) Khetho le ho lumellana ha HPMC
Ho khetha lintlha tse nepahetseng tsa HPMC ho likhomaretsi tsa lithaele tse thehiloeng ho samente ho bohlokoa ts'ebetsong ea sehlahisoa.Liparamente tse kang HPMC viscosity, substitution degree le particle size e tla ama phello ea eona ea ho qetela.Ka kakaretso, ha viscosity ea HPMC e phahame, ho tla ba molemo ho boloka metsi le phello e teteaneng, empa nako ea ho qhibiliha le eona e tla eketseha.Ka hona, hoa hlokahala ho khetha lintlha tse nepahetseng ho latela litlhoko tsa 'nete.
HPMC e hloka ho tsamaisana ka mokhoa o utloahalang le lisebelisoa tse ling ho fihlela ts'ebetso e nepahetseng.Ka mohlala, motsoako le li-additives tse kang ethylene glycol, propylene glycol le li-ether tse ling tsa cellulose li ka ntlafatsa ts'ebetso ea kaho le ho tšoarella ha sekhomaretsi.
(5) Mokhoa oa nts'etsopele ea HPMC ka li-adhesives tse thehiloeng ho samente
Ka tsoelo-pele e tsoelang pele ea theknoloji ea thepa ea mohaho, litlhoko tsa ts'ebetso ea li-adhesives tse thehiloeng ho samente le tsona li ntse li phahama le ho feta.E le e 'ngoe ea litlatsetso tsa bohlokoa, mokhoa oa nts'etsopele oa HPMC o bonts'oa haholo likarolong tse latelang:
Patlisiso le nts'etsopele ea HPMC e baballang tikoloho: Ka ntlafatso ea tlhokomeliso ea tikoloho, lipatlisiso le nts'etsopele ea metsoako ea lintho tse phelang tse fokolang (VOC) le HPMC e senyehileng e senyehileng tikolohong e se e le tloaelo.
Nts'etsopele ea HPMC e sebetsang: E le ho finyella litlhoko tse fapaneng tsa kaho, lihlahisoa tsa HPMC tse nang le mesebetsi e itseng (e kang anti-mildew, antibacterial, ho boloka mebala, joalo-joalo) li ntlafatsoa ho ntlafatsa ts'ebetso e feletseng ea li-adhesives tsa lithaele.
Tšebeliso ea HPMC e bohlale: Intelligent HPMC e ka fetola ts'ebetso ea eona ka bo eona ho latela maemo a tikoloho (joalo ka mocheso, mongobo, joalo-joalo), e le hore li-adhesives tse thehiloeng ho samente li ka boloka ts'ebetso e babatsehang tlas'a maemo a sa tšoaneng a kaho.
Tšebeliso ea HPMC ho li-adhesives tse thehiloeng ho samente e ntlafatsa haholo ts'ebetso ea likhomaretsi, ho kenyelletsa le ho ntlafatsa ts'ebetso ea kaho, ho eketsa matla a tlamahano, ho lelefatsa nako e bulehileng le ho eketsa thepa e thibelang ho thella.Ho boloka metsi a eona, ho teteaneng le phello e ntle ea sehokelo ho thusa likhomaretsi tse thehiloeng ho samente ho fihlela litholoana tse ntle haholo kahong ea 'nete.Ka tsoelo-pele e tsoelang pele ea thekenoloji, libaka tsa ts'ebeliso le mesebetsi ea HPMC le tsona li ntse li atoloha kamehla, li fana ka litebello tse pharaletseng bakeng sa nts'etsopele ea li-adhesives tse thehiloeng ho samente.
Nako ea poso: Jun-28-2024