Hydroxypropyl Methylcellulose (HPMC) bụ ihe na-abụghị ionic cellulose ether nke a na-ejikarị eme ihe na ihe owuwu ụlọ, karịsịa na ngwa agha akọrọ, nrapado na mkpuchi. The viscosity nke HPMC bụ otu n'ime ya isi arụmọrụ egosi na-ewu ngwa na nwere mmetụta dị mkpa na workability, mmiri njide na n'ibu Njirimara nke ihe onwunwe.
Mmekọrịta dị n'etiti viscosity nke hydroxypropyl methylcellulose na njirimara usoro
Nrụ ọrụ
Viscosity nke HPMC na-arụ ọrụ dị mkpa na ịrụ ọrụ nke ihe ụlọ. High viscosity HPMC nwere ike budata melite agbanwe agbanwe na rheological Njirimara nke ihe onwunwe, ikwe ya ka mma rube isi na mkpụrụ na ibelata sagging n'oge ewu. Dị ka ọmụmaatụ, na seramiiki adhesives, ojiji nke elu viscosity HPMC nwere ike ime ka ọ dị mfe maka gluu na-eme ka otu mkpuchi n'etiti seramiiki taịl nile na mkpụrụ, si otú ahụ na-emeziwanye ihe owuwu arụmọrụ na bonding mma.
Otú ọ dị, nnukwu viscosity nwere ike ime ka ngwa ahụ sie ike karị, n'ihi na ihe ndị nwere viscosity dị elu nwere ike isi ike ịmalite ma gbasaa. Ya mere, ọ dị mkpa ịchọta nguzozi n'etiti viscosity na ịrụ ọrụ iji hụ na ihe ahụ nwere ezigbo ọrụ ma nwee ike izute mkpa injinia.
Njide mmiri
Ngwongwo njide mmiri nke HPMC dị oke mkpa maka usoro siri ike nke ihe owuwu ụlọ. Nnukwu viscosity HPMC nwere ikike njigide mmiri siri ike ma nwee ike idowe mmiri n'ime ihe ahụ ruo ogologo oge mgbe emechara ya. Nke a dị mkpa karịsịa maka ihe ndị dabeere na ciment, n'ihi na mmiri zuru ezu nwere ike ịkwalite mmeghachi omume hydration nke ciment ma mee ka ike na ịdịte aka nke ihe siri ike.
N'ihe ndị dabere na gypsum, HPMC viscosity dị elu na-enyekwa aka gbochie oke mmiri mmiri n'oge a na-ewu ụlọ, si otú a na-ezere mgbawa na nsogbu mbelata. N'ikwu okwu n'ozuzu, HPMC nwere viscosity dị elu nwere uru doro anya na ịkwalite njide mmiri ma dabara maka ngwa ndị chọrọ njikwa mmiri dị elu.
Anti-sag na mgbochi-slip Njirimara
Na mgbidi mkpuchi ihe na tile adhesives, viscosity nke HPMC nwekwara mmetụta dị ịrịba ama na sag-eguzogide na-amị amị. High viscosity HPMC nwere ike n'ụzọ dị irè dịkwuo thixotropy nke ihe onwunwe, na-eme ka ọ na-egosipụta a elu viscosity na a static ala, si otú ibelata eruba nke ihe na vetikal elu. Ihe onwunwe a dị mkpa maka ịnọgide na-enwe nkwụsi ike nke mkpuchi ma ọ bụ taịl nile n'elu elu, na-enyere aka imeziwanye àgwà na ịrụ ọrụ nke ọma.
Ikuku mkpuchi na ike nkekọ
The viscosity nke HPMC na-emetụtakwa ọnụ ọgụgụ nke ikuku ọnyà na ihe na ya kacha njikọ ike. HPMC nwere viscosity dị elu nwere ike ịbawanye ọdịnaya ikuku n'ime ihe ahụ, si otú a na-eme ka nkwụsi ike nke ihe ahụ na ihe mkpuchi ọkụ. Agbanyeghị, oke ọdịnaya ikuku nwere ike ibelata njupụta nke ihe ahụ, si otú a na-emetụta ike njikọ ya. Ya mere, mgbe ị na-ahọrọ HPMC, ọ dị mkpa iji nlezianya tụlee mmetụta nke viscosity ya na njirimara nhazi nke ihe ahụ iji jide n'aka na ihe ahụ nwere arụmọrụ nhazi dị mma ma nwee ike imezu ihe achọrọ arụmọrụ ikpeazụ.
Nkwalite na nhọrọ na ngwa bara uru
N'ime ngwa bara uru, ndị na-emepụta ihe ụlọ na-ebuli ọnụọgụ ojiji na viscosity nke HPMC site na nnwale na ahụmịhe iji gboo mkpa nke ngwa ndị akọwapụtara. Kpọmkwem, ọnọdụ ngwa dị iche iche nwere ike ịnwe ihe dị iche iche chọrọ maka viscosity HPMC. Dịka ọmụmaatụ, na nrapado taịlị, a na-ejikarị HPMC nwere viscosity dị elu iji kwalite nkwụghachi azụ, ebe na plasta ngwa agha, enwere ike ịhọrọ HPMC na-ajụ viscosity ka ọ buru n'uche ma ịrụ ọrụ na njide mmiri.
Oke dị ka nkesa arọ molekụla, ogo nnọchi anya (DS) na ogo ngbanwe nke molar (MS) nke HPMC ga-emetụta viscosity na arụmọrụ ya. Ya mere, mgbe ị na-ahọrọ HPMC, ọ bụghị nanị viscosity ka a ga-atụle, ma ya ndị ọzọ chemical Njirimara a ga-atụle n'ụzọ zuru ezu iji hụ na ya kacha mma na ihe owuwu ụlọ.
Viscosity nke hydroxypropyl methylcellulose nwere mmetụta dị ukwuu na arụmọrụ ya na ihe owuwu ụlọ. Site n'ụzọ ezi uche na-ahọrọ na optimizing na viscosity nke HPMC, ihe onwunwe workability, mmiri njide, sag iguzogide na ikuku encapsulation ike nwere ike mma, si otú imeziwanye n'ozuzu arụmọrụ na ewu arụmọrụ nke ihe owuwu. N'ime ngwa bara uru, HPMC nwere viscosity kwesịrị ekwesị kwesịrị ka ahọpụtara ya dịka ihe a chọrọ na ọnọdụ ihe owuwu si dị iji nweta nsonaazụ kacha mma na ịdịte aka. Nke a ọ bụghị naanị na-achọ nghọta miri emi nke kemịkalụ na akụrụngwa anụ ahụ nke HPMC, mana ọ na-achọkwa nchikota ahụmịhe na data nnwale na arụmọrụ n'ezie iji hụ na njikarịcha arụmọrụ ihe.
Oge nzipu: Jul-10-2024