1. Gịnị bụ isi ngwa nke hydroxypropyl methylcellulose (HPMC)?
Azịza: A na-eji HPMC eme ihe n'ọtụtụ ebe na ihe owuwu, mkpuchi, resins synthetic, ceramics, ọgwụ, nri, textiles, ọrụ ugbo, ihe ịchọ mma, ụtaba na ụlọ ọrụ ndị ọzọ. Enwere ike ikewa HPMC gaa na ọkwa ihe owuwu, ọkwa nri na ọkwa ọgwụ dịka ebumnuche siri dị. Ka ọ dị ugbu a, ọtụtụ n'ime ngwaahịa ụlọ bụ ọkwa ihe owuwu. Na ọkwa ihe owuwu, a na-eji ntụ ntụ na-eme ihe na nnukwu ego, ihe dịka 90% na-eji ntụ ntụ eme ihe, ndị ọzọ na-eji ciment mortar na gluu.
2. Enwere ọtụtụ ụdị hydroxypropyl methylcellulose (HPMC), oleekwa ọdịiche dị na ojiji ha?
Azịza: Enwere ike ikewa HPMC ka ọ bụrụ ụdị ngwa ngwa na ụdị mgbasa ọkụ. Ngwa ngwa ụdị ngwaahịa na-agbasa ngwa ngwa na mmiri oyi wee pụọ n'ime mmiri. N'oge a, mmiri mmiri enweghị viscosity n'ihi na HPMC na-agbasasị naanị na mmiri na-enweghị ezigbo mgbasa. Ihe dị ka nkeji 2, viscosity nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, na-eme ka viscos colloid transperent. Ngwaahịa na-ekpo ọkụ na-ekpo ọkụ, mgbe a na-ezute mmiri oyi, nwere ike ịgbasa ngwa ngwa na mmiri ọkụ ma pụọ na mmiri ọkụ. Mgbe okpomọkụ na-adaba n'otu ọnọdụ okpomọkụ, viscosity ga-eji nwayọọ nwayọọ na-apụta ruo mgbe ọ na-emepụta colloid viscous na-egbuke egbuke. Ụdị agbaze na-ekpo ọkụ nwere ike iji naanị na ntụ ntụ na ngwa ngwa. N'ime gluu mmiri mmiri na agba, a ga-enwe mkpokọta mkpokọta na enweghị ike iji ya. Ụdị ngwa ngwa nwere ọtụtụ ngwa ngwa. Enwere ike iji ya na ntụ ntụ na ngwa ngwa, yana gluu mmiri na agba, na-enweghị ihe ọ bụla.
3. Gịnị bụ mgbasa ụzọ nke hydroxypropyl methylcellulose HPMC?
Azịza: Usoro mgbaze mmiri ọkụ: Ebe ọ bụ na HPMC adịghị agbaze na mmiri ọkụ, HPMC nwere ike ịgbasa na mmiri ọkụ na mbido mbụ, wee gbazee ngwa ngwa mgbe ọ dị jụụ. A na-akọwa ụzọ abụọ ahụkarị dị ka ndị a:
1), tinye 1/3 ma ọ bụ 2/3 nke mmiri achọrọ n'ime akpa ahụ, wee kpoo ya na 70 Celsius C, gbasaa HPMC dịka usoro nke 1 si dị), ma dozie slurry mmiri ọkụ; wee tinye nke fọdụrụ ego nke mmiri oyi na mmiri ọkụ slurry, ngwakọta a mma mgbe edemede.
Usoro ngwakọta ntụ ntụ: mix HPMC ntụ ntụ na nnukwu ihe ndị ọzọ na-eme ntụ ntụ, gwakọta nke ọma na mixer, wee gbakwunye mmiri ka ọ gbazee, mgbe ahụ, HPMC nwere ike igbari n'oge a na-enweghị agglomeration, n'ihi na ọ bụ naanị obere HPMC dị na obere obere ọ bụla. nkuku ntụ ntụ, ga-agbaze ozugbo mgbe mmiri na-akpakọrịta. ——Ndị na-emepụta ntụ ntụ na ngwa agha na-eji usoro a eme ihe. [Hydroxypropyl methylcellulose (HPMC) na-eji dị ka onye na-ejigide ihe na-ekpo ọkụ na mmiri na-ekpo ọkụ na putty powder mortar.
2) Tinye mmiri ọkụ achọrọ n'ime akpa ahụ wee kpoo ya ihe dịka 70 Celsius. Na hydroxypropyl methylcellulose ji nwayọọ nwayọọ na-agbakwunyere n'okpuru nwayọọ edemede, na mbụ HPMC sere n'elu mmiri, na mgbe ahụ jiri nwayọọ nwayọọ na-etolite a slurry, nke a jụrụ n'okpuru edemede.
Oge nzipu: Dec-01-2022