Phello ea ntlafatso ea hydroxypropyl methyl cellulose linthong tse thehiloeng ho samente

Litaba

Phello ea ntlafatso ea hydroxypropyl methyl cellulose linthong tse thehiloeng ho samente

Lilemong tsa morao tjena, ka nts'etsopele e tsoelang pele ea thekenoloji e tsoang ka ntle ea lerako la mocheso, tsoelo-pele e tsoelang pele ea theknoloji ea tlhahiso ea hydroxypropyl methyl cellulose, le litšobotsi tse babatsehang tsa hydroxypropyl methyl cellulose HPMC ka boeona, hydroxypropyl methyl cellulose HPMC e sebelisitsoe haholo indastering ea kaho.

ho beha nako

Nako ea ho beha konkreite e amana haholo le nako ea ho beha samente, 'me kakaretso e na le tšusumetso e fokolang.Ka hona, nako ea ho beha seretse e ka sebelisoa ho nkela lipatlisiso tse mabapi le tšusumetso ea HPMC nakong ea ho beoa ha motsoako oa konkreite e sa qhalakaneng ka tlas'a metsi.Kaha nako ea ho beha seretse e angoa ke karo-karolelano ea samente ea metsi le karo-karolelano ea lehlabathe la samente, e le ho hlahloba tšusumetso ea HPMC ka nako ea ho beha seretse, ho hlokahala ho lokisa tekanyo ea samente ea metsi le karo-karolelano ea lehlabathe la samente ea seretse.

Boitšoaro ba liteko bo bontša hore ho eketsoa ha HPMC ho na le phello e thibelang motsoako oa seretse, 'me nako ea ho beha seretse e eketseha ka ho eketseha ha palo ea cellulose ether HPMC.Ka tekanyo e lekanang ea HPMC, nako ea ho beha seretse se entsoeng ka tlas'a metsi e telele ho feta se entsoeng moeeng.Ha e lekantsoe ka metsing, nako ea ho beha seretse se kopantsoeng le HPMC ke 6 ~ 18h hamorao sebakeng sa pele le 6 ~ 22h hamorao sebakeng sa ho qetela ho feta sa mohlala o se nang letho.Ka hona, HPMC e lokela ho sebelisoa hammoho le moemeli oa matla a pele.

HPMC ke polymer e nang le macromolecular linear structure, e nang le lihlopha tsa hydroxyl lihlopheng tse sebetsang, tse ka etsang li-bond tsa haedrojene ka ho kopanya limolek'hule tsa metsi ho eketsa viscosity ea ho kopanya metsi.Liketane tse telele tsa limolek'hule tsa HPMC li tla hohelana, li etsa hore limolek'hule tsa HPMC li kopane ho etsa sebopeho sa marang-rang, le ho phuthela samente le ho kopanya metsi.Ha HPMC e etsa sebopeho sa marang-rang se ts'oanang le filimi 'me se phuthela samente, se ka thibela ka katleho ho senyeha ha metsi ka har'a seretse le ho sitisa kapa ho fokotsa lebelo la samente hydration.

Ho tsoa mali

Ketsahalo ea mali ea seretse e ts'oana le ea konkreite, e tla etsa hore ho be le li-aggregates tse tebileng, ho eketsa tekanyo ea samente ea metsi a slurry e ka holimo, ho etsa hore slurry e ka holimo e be le shrinkage e kholo ea polasetiki, kapa esita le ho phunyeha qalong; 'me matla a bokaholimo ba seretse a batla a fokola.

Ha litekanyetso li feta 0.5%, ha e le hantle ha ho na mali a tsoang.Lebaka ke hore ha HPMC e kopantsoe le seretse, HPMC e na le sebopeho sa filimi le reticular, hammoho le adsorption ea hydroxyl holim'a ketane e telele ea macromolecule, e etsang hore samente le ho kopanya metsi ka mokhoa oa seretse ho be le flocculent, ho etsa bonnete ba hore mohaho o tsitsitseng oa seretse.Ha HPMC e eketsoa seretseng, ho tla theoa li-bubble tse ngata tse ikemetseng.Li-bubble tsena li tla aroloa ka ho lekana ka seretse 'me li sitise ho beoa ha li-aggregates.Ts'ebetso ena ea tekheniki ea HPMC e na le tšusumetso e kholo linthong tse thehiloeng ho samente, 'me hangata e sebelisoa ho lokisa metsoako e mecha e thehiloeng ho samente joalo ka seretse se ommeng le seretse sa polima, e le hore li be le metsi a matle le polokelo ea polasetiki.

Tlhokahalo ea metsi ea seretse

Ha palo ea HPMC e nyane haholo, e na le tšusumetso e kholo tlhokahalong ea metsi ea seretse.Tlas'a boemo ba hore katoloso ea seretse se secha e ts'oana, palo ea HPMC le tlhoko ea metsi ea seretse e fetoha ka mokhoa o ikhethileng ka nako e itseng, mme tlhoko ea metsi ea seretse e fokotseha pele ebe e ea eketseha.Ha litaba tsa HPMC li le ka tlase ho 0.025%, ka keketseho ea litaba tsa HPMC, tlhokahalo ea metsi ea seretse e fokotseha tlas'a tekanyo e tšoanang ea ho atolosa, e bontšang hore e nyenyane ea litaba tsa HPMC, phello ea ho fokotsa metsi ea seretse.Phello ea ho kenya moea ea HPMC e etsa hore seretse se be le palo e kholo ea li-bubble tse nyenyane tse ikemetseng, tse bapalang karolo ea ho tlotsa le ho ntlafatsa ho phalla ha seretse.Ha litekanyetso li le kholo ho feta 0.025%, tlhokahalo ea metsi ea seretse e eketseha ka keketseho ea litekanyetso, e leng ka lebaka la botšepehi bo eketsehileng ba sebopeho sa marang-rang sa HPMC, ho khutsufatsa lekhalo pakeng tsa li-flocs ka ketane e telele ea limolek'hule, ho hohela le ho momahano, le phokotso ya lero la seretse.Ka hona, ha tekanyo ea ho atolosa e tšoana hantle, slurry e bontša keketseho ea tlhokahalo ea metsi.


Nako ea poso: Nov-25-2022