Hydroxypropylmethylcellulose (HPMC) ke cellulose ether e nkiloeng ho selulose ea tlhaho. HPMC e sebelisoa mefuteng e mengata ea lits'ebetso tse kenyelletsang tlhahiso ea lijo, kaho, meriana le litlolo. Joaloka moetsi oa HPMC, re ikemiselitse ho hlahisa lihlahisoa tsa boleng bo holimo tse khotsofatsang litlhoko tsa bareki ba rona.
Lilemong tsa morao tjena, HPMC e nang le viscosity e tlaase e se e tumme haholoanyane indastering ea kaho ka lebaka la thepa ea eona e ntlafetseng ea kopo le thepa e ntle ea ho hasana. HPMC e nang le viscosity e tlase e sebelisoa hangata liretseng, lipolasetereng le likhomaretsing tsa lithaele joalo ka sekontiri, se tlamang le se bolokang metsi. Sengoliloeng sena, re hlalosa HPMC ea viscosity e tlase le melemo ea eona bakeng sa indasteri ea kaho.
HPMC ea viscosity e tlase ke eng?
Low Viscosity HPMC ke cellulose ether e nang le viscosity e tlase ha e bapisoa le HPMC ea setso. Sena se etsa hore ho be bonolo ho tšoara le ho aba, hape ho ntlafatsa ho sebetsa ha thepa ea mohaho. Low-viscosity HPMC e atisa ho sebelisoa ka seretse le lisebelisoa tse ling tsa kaho ho sebetsa e le motenya le ho ntlafatsa momahano oa thepa le ho sebetsa.
Melemo ea HPMC ea viscosity e tlase ke efe?
Ntlafatso ea Ts'ebetso e Ntlafetseng: Viscosity e tlase HPMC e ntlafatsa ho sebetsa ha thepa ea kaho ka ho ntlafatsa phallo le ho hasana ha thepa. Sena se etsa hore kopo e be bonolo ebile e ntlafatsa boleng ba kakaretso ea sehlahisoa se felileng.
Ho khomarela ho Molemo: HPMC e tlaase-viscosity e sebetsa e le sekhomaretsi ho ntlafatsa ho khomarela thepa ea mohaho ho li-substrates. Sena se etsa hore e be tlatsetso e loketseng bakeng sa seretse, li-plaster le li-adhesive tsa lithaele.
Ntlafatso ea ho boloka metsi: Viscosity e tlase HPMC e ka boela ea eketsa ho bolokoa ha metsi thepa ea moaho, ea fokotsa bongata ba metsi a hlokahalang ho fihlela tšebetso e lakatsehang. Sena se boloka litšenyehelo le ho ntlafatsa ts'ebetso ea sehlahisoa.
Ha e na chefo ebile e na le tikoloho: HPMC e nang le viscosity e tlase ha e chefo ebile ha e na tikoloho, 'me ke khetho e bolokehileng bakeng sa thepa ea moaho. E boetse ea senyeha 'me e ka sebelisoa hape habonolo.
Mekhahlelo e Pharalletseng ea Likopo: HPMC e nang le viscosity e tlase e ka sebelisoa mefuteng e fapaneng ea thepa ea kaho, ho kenyeletsoa seretse, li-plaster, li-grouts le likhomaretsi tsa lithaele. E boetse e sebelisoa ho hlahisa meriana, litlolo le lijo.
HPMC ea viscosity e tlase e hlahisoa joang?
Low viscosity HPMC e hlahisoa ka mokhoa o ts'oanang le HPMC ea setso. Ts'ebetso ena e kenyelletsa ho fetolela cellulose ea matsoalloa ho methylcellulose, ebe o eketsa lihlopha tsa hydroxypropyl ho methylcellulose ho theha HPMC. Low viscosity HPMC e hlahisoa ka ho laola tekanyo ea ho fetola (DS) le boima ba limolek'hule tsa HPMC, ho fella ka sehlahisoa se tlaase sa viscosity.
Ke mefuta efe ea HPMC ea viscosity e tlase e teng?
Low viscosity HPMC e fumaneha ka mefuta e fapaneng ea limaraka, e 'ngoe le e 'ngoe e na le thepa le litšobotsi tsa eona. Mefuta e meng e tloaelehileng e tlase ea viscosity HPMC e kenyelletsa:
- LV: kereiti e tlase ea viscosity e nang le mefuta e mengata ea viscosity ea 50 - 400 mPa.s. LV HPMC e atisa ho sebelisoa lipolasetereng, libotlolong le likhomaretsing tsa lithaele.
- LVF: kereiti e tlase ea viscosity e potlakileng e nang le mefuta e mengata ea viscosity ea 50 - 400 mPa.s. LVF HPMC e sebelisoa hangata ho seta sekhomaretsi sa lithaele le li-grouts ka potlako.
- LVT: Kereiti e tlase ea viscosity thickening e nang le mefuta e mengata ea viscosity ea 400 - 2000 mPa.s. LVT HPMC e sebelisoa hangata ho metsoako e kopaneng, khatiso ea masela le lihlahisoa tsa tlhokomelo ea motho.
Lisebelisoa tsa HPMC ea viscosity e tlase ke life?
Low viscosity HPMC e sebelisoa haholo indastering ea kaho e le sekontiri, sekhomaretsi le se bolokang metsi. Lisebelisoa tse ling tse tloaelehileng tsa viscosity e tlase ea HPMC kahong li kenyelletsa:
- Li-Mortars: HPMC e nang le viscosity e tlase e sebelisoa liretseng ho ntlafatsa ts'ebetso, ho khomarela le ho boloka metsi. E boetse e tenya seretse, ho etsa hore ho be bonolo ho se sebelisa le ho fokotsa kotsi ea ho peperana.
- Plastering: HPMC e nang le viscosity e tlase e sebelisoa ho lipolasetera ho ntlafatsa ts'ebetso le ho boloka metsi. E boetse e ntlafatsa ponahalo ea liphetolelo tsa hau, e etsa hore libaka tsa tsona li be bonolo.
- Li-Adhesives tsa Lithaele: HPMC e nang le viscosity e tlase e sebelisoa ho likhomaretsi tsa lithaele ho ntlafatsa ts'ebetso, ho khomarela le ho boloka metsi. E boetse e etsa bonnete ba hore sekhomaretsi sa lithaele se lula se fetoha habonolo ka mor'a hore se behoe.
- Grouting: Low viscosity HPMC e sebelisoa ka grouting ho ntlafatsa ts'ebetso le ho boloka metsi. E boetse e thusa ho thibela grout hore e se ke ea qhoma le ho fokotseha.
ha re phethela
Low-viscosity HPMC ke tlatsetso ea bohlokoa indastering ea kaho, e ka ntlafatsang ts'ebetso, ho khomarela le ho boloka metsi a thepa ea moaho. Joaloka moetsi oa HPMC, re ikemiselitse ho hlahisa lihlahisoa tsa boleng bo holimo tse khotsofatsang litlhoko tsa bareki ba rona. Re tla tswelapele ho qapa le ho ntlafatsa dihlahiswa tsa rona ho netefatsa hore di dula di le ka pele indastering ya kaho.
Nako ea poso: Jul-20-2023