1. Gịnị bụ isi ihe e ji eme ihe?hydroxypropyl methylcellulose (HPMC)?
A na-eji HPMC eme ihe n'ọtụtụ ebe n'ihe owuwu, ihe mkpuchi, resin sịntetik, seramiiki, ọgwụ, nri, ákwà, ọrụ ugbo, ihe ịchọ mma, ụtaba na ụlọ ọrụ ndị ọzọ. Enwere ike kewaa HPMC n'ime ọkwa owuwu, ọkwa nri na ọkwa ọgwụ dịka ebumnuche ya si dị. Ugbu a, ọtụtụ n'ime ngwaahịa ụlọ bụ ọkwa owuwu. N'ọkwa owuwu, a na-eji ntụ ntụ putty eme ihe n'ọtụtụ buru ibu, ihe dị ka 90% bụ maka ntụ ntụ putty, ebe a na-eji ihe ndị ọzọ eme ihe maka ụrọ simenti.
2. Gịnị bụ isi nke hydroxypropyl methylcellulose (HPMC)?
HPMC nke usoro ihe mgbaze mepụtara na-eji toluene na isopropanol dị ka ihe mgbaze. Ọ bụrụ na ịsa ahụ adịghị mma nke ukwuu, a ga-enwe isi ụfọdụ fọdụrụ.
3. Kedu ụzọ esi agbaze hydroxypropyl methylcellulose (HPMC)?
Usoro ịgbaze mmiri ọkụ: Ebe ọ bụ na HPMC anaghị agbaze na mmiri ọkụ, enwere ike ịgbasa HPMC n'otu aka ahụ na mmiri ọkụ na mbido, wee gbazee ngwa ngwa mgbe ọ jụrụ oyi. A kọwara ụzọ abụọ a na-ahụkarị dị ka ndị a:
1) Tinye mmiri ọkụ achọrọ n'ime akpa ahụ wee kpoo ya ọkụ ruo ihe dị ka 70°C. A na-etinye hydroxypropyl methylcellulose nwayọ nwayọ n'ime ya, na mbụ, HPMC na-ese n'elu mmiri ahụ, wee jiri nwayọọ nwayọọ mepụta slurry, nke a na-ajụ oyi mgbe a na-akpali ya.
2), tinye 1/3 ma ọ bụ 2/3 nke mmiri achọrọ n'ime akpa ahụ, kpoo ya ọkụ ruo 70°C, gbasaa HPMC dịka usoro nke 1 si dị), ma kwadebe mmiri ọkụ; wee tinye mmiri oyi fọdụrụ na mmiri ọkụ, ngwakọta ahụ jụrụ oyi mgbe agwakọtara ya.
Usoro ngwakọta ntụ ntụ: gwakọta ntụ ntụ HPMC na ọtụtụ ihe ndị ọzọ dị ka ntụ ntụ, gwakọta ya nke ọma na igwekota, wee tinye mmiri ka ọ gbazee, mgbe ahụ enwere ike ịgbaze HPMC n'oge a na-enweghị njikọta, n'ihi na obere HPMC dị na obere nkuku ọ bụla, ntụ ntụ ga-agbaze ozugbo mgbe ọ metụrụ mmiri aka. ——Ndị na-emepụta ntụ ntụ na ngwa agha na-eji usoro a. [A na-eji Hydroxypropyl methylcellulose (HPMC) eme ihe dị ka ihe na-eme ka mmiri sie ike ma na-ejide mmiri na ngwa agha ntụ ntụ. ]
4. Kedu otu esi ekpebi ịdị mma nke hydroxypropyl methylcellulose (HPMC) n'ụzọ dị mfe na n'ụzọ amamihe?
(1) Ịcha ọcha: Ọ bụ ezie na ịcha ọcha enweghị ike ikpebi ma ọ dị mfe iji HPMC, ọ bụrụkwa na etinyere ihe ndị na-eme ka ọ dị ọcha n'oge mmepụta, ọ ga-emetụta àgwà ya. Agbanyeghị, ọtụtụ n'ime ngwaahịa dị mma nwere ezigbo ịcha ọcha.
(2) Ịdị mma: Ịdị mma nke HPMC na-enwekarị 80 mesh na 100 mesh, ebe 120 mesh pere mpe. Ọtụtụ HPMC emepụtara na Hebei bụ 80 mesh. Ka ịdị mma ya na-aka mma, n'ozuzu ya, ka ọ ka mma.
(3) Mbufe ọkụ: tinyehydroxypropyl methylcellulose (HPMC)n'ime mmiri iji mepụta colloid doro anya, ma lelee nnyefe ìhè ya. Ka nnyefe ìhè ka ukwuu, otú ahụ ka ọ ka mma, na-egosi na enweghị ihe na-agbaze na ya. . Njupụta nke reactors kwụ ọtọ na-adịkarị mma, nke reactors kwụ ọtọ na-akakwa njọ, mana ọ pụtaghị na ịdị mma nke reactors kwụ ọtọ ka mma karịa nke reactors kwụ ọtọ, ọtụtụ ihe na-ekpebikwa ịdị mma nke ngwaahịa.
(4) Oke ike ndọda pụrụ iche: Ka oke ike ndọda kpọmkwem si dị, otú ahụ ka ọ na-adị arọ karị. Oke ike nghọta ya dị ukwuu, n'ozuzu ya n'ihi na oke ike njikọ hydroxypropyl dị na ya dị elu, oke ike njikọ hydroxypropyl dịkwa elu, otú ahụ ka njide mmiri dị mma.
5. Gịnị bụ ihe dị iche n'etiti ụdị mmiri oyi na-agbaze ngwa ngwa na ụdị hydroxypropyl methylcellulose na-agbaze ngwa ngwa n'usoro mmepụta?
A na-eji glyoxal agwọ ụdị HPMC nke na-agbasa ngwa ngwa n'elu ya, ọ na-agbasakwa ngwa ngwa n'ime mmiri oyi, mana ọ naghị agbaze n'ezie. Ọ na-agbaze naanị mgbe viscosity mụbara. Ụdị ozugbo ahụ enweghị ọgwụgwọ elu na glyoxal. Ọ bụrụ na ọnụọgụ glyoxal buru ibu, mgbasa ahụ ga-adị ngwa ngwa, mana viscosity ahụ ga-amụba nwayọ nwayọ, ọ bụrụkwa na ọnụọgụ ahụ pere mpe, ihe dị iche ga-abụ eziokwu.
6. Kedu ihe bụ viscosity kwesịrị ekwesị nke hydroxypropyl methylcellulose (HPMC)?
Ntụ ntụ putty na-abụkarị yuan 100,000, ihe achọrọ maka ngwa agha dịkwa elu, a na-achọkwa yuan 150,000 maka ojiji dị mfe. Ọzọkwa, ọrụ kachasị mkpa nke HPMC bụ idobe mmiri, wee soro ya mee ka ọ dị arọ. N'ime ntụ ntụ putty, ọ bụrụhaala na idobe mmiri dị mma ma viscosity dị ala (70,000-80,000), ọ ga-ekwe omume. N'ezie, ka viscosity dị elu, otú ahụ ka idobe mmiri ka mma. Mgbe viscosity karịrị 100,000, viscosity ga-emetụta idobe mmiri. Ọ gaghịzi adị mkpa.
7. Kedu ihe bụ isi ihe na-egosi teknụzụ nke hydroxypropyl methylcellulose (HPMC)?
Ọ dị mkpa ka ọtụtụ mmadụ chebara ihe ngosi abụọ a echiche. Ndị nwere nnukwu hydroxypropyl na-enwekarị nchekwa mmiri ka mma. Nke nwere nnukwu viscosity nwere nchekwa mmiri ka mma, n'ụzọ dịtụ iche (ọ bụghị kpamkpam), nke nwere nnukwu viscosity ka mma iji na simenti.
8. Kedu ihe ndị bụ isi e ji hydroxypropyl methylcellulose (HPMC) mee?
Isi ihe ndị dị na hydroxypropyl methylcellulose (HPMC): owu a nụchara anụcha, methyl chloride, propylene oxide, na ihe ndị ọzọ e ji eme ihe, caustic soda, acid, toluene, isopropanol, wdg.
9. Gịnị bụ isi ọrụ nke itinye nkeHPMCna ntụ ntụ putty, ọ na-emekwa na kemịkalụ?
N'ime ntụ ntụ putty, HPMC na-arụ ọrụ atọ dịka ịkachasị, idobe mmiri na iwu ụlọ.
Ịkpụcha akpụkpọ ahụ: Enwere ike ime ka cellulose sie ike ka ọ kwụsie ike ma mee ka ihe ngwọta ahụ dị otu a elu na ala, ma gbochie ịda mbà.
Ijide mmiri: mee ka ntụ putty ahụ kpọọ nkụ nwayọ nwayọ, ma nyere calcium ntụ aka imeghachi omume n'okpuru ọrụ mmiri.
Mmepụta: Cellulose nwere mmetụta na-eme ka mmanụ dị n'ahụ, nke nwere ike ime ka ntụ ntụ putty nwee ezigbo owuwu.
Ịtinye mmiri na ntụ ntụ putty ma tinye ya na mgbidi bụ mmeghachi omume kemịkalụ, n'ihi na a na-emepụta ihe ọhụrụ. Ọ bụrụ na ị wepụ ntụ ntụ putty dị na mgbidi ahụ na mgbidi ahụ, gwerie ya ka ọ bụrụ ntụ, ma jiri ya ọzọ, ọ gaghị arụ ọrụ n'ihi na emepụtala ihe ọhụrụ (calcium carbonate).
Isi ihe mejupụtara ntụ ntụ calcium ntụ bụ: ngwakọta nke Ca(OH)2, CaO2 na obere CaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Calcium ntụ dị na mmiri na ikuku N'okpuru ọrụ nke CO2, a na-emepụta calcium carbonate, ebe HPMC na-ejide naanị mmiri, na-enyere aka ka calcium ntụ dị mma, ọ naghịkwa esonye na mmeghachi omume ọ bụla n'onwe ya.
10. HPMC bụ cellulose ether nke na-abụghị ionic, yabụ gịnị bụ non-ionic?
N'okwu ndị nkịtị, ihe ndị na-abụghị ion bụ ihe ndị na-anaghị ion n'ime mmiri. Ionization na-ezo aka n'usoro e si ekewa electrolyte n'ime ion charge nke nwere ike ịkwaga n'enweghị nsogbu n'ime ihe mgbaze kpọmkwem (dịka mmiri, mmanya). Dịka ọmụmaatụ, sodium chloride (NaCl), nnu anyị na-eri kwa ụbọchị, na-agbaze na mmiri ma na-agbanwe ion iji mepụta sodium ion (Na+) nke a na-ebugharị nke ọma na ion chloride (Cl) nke a na-enweta na-adịghị mma. Nke ahụ bụ, mgbe etinyere HPMC na mmiri, ọ gaghị ekewa n'ime ion charge, kama ọ dị adị n'ụdị molekul.
11. Kedu ihe metụtara okpomọkụ jel nke hydroxypropyl methylcellulose?
Okpomọkụ gel nke HPMC metụtara ọdịnaya methoxy ya, obere ọdịnaya methoxy, ka okpomọkụ gel na-arị elu.
12. È nwere njikọ dị n'etiti ntụ ntụ putty na HPMC?
Ntufu ntụ ntụ nke putty na-adaberekarị n'ịdị mma nke calcium ntụ, ọ nweghịkwa ihe jikọrọ ya na HPMC. Ọdịnaya calcium dị ala nke calcium isi awọ na oke CaO na Ca(OH)2 na calcium isi awọ ga-akpata ntụ ntụ. Ọ bụrụ na ọ nwere ihe jikọrọ ya na HPMC, mgbe ahụ ọ bụrụ na HPMC enweghị mmiri zuru oke, ọ ga-akpatakwa ntụ ntụ.
13. Gịnị bụ ihe dị iche n'etiti ụdị mmiri oyi na-agbaze ngwa ngwa na ụdị hydroxypropyl methylcellulose na-agbaze ngwa ngwa n'usoro mmepụta?
Ụdị mgbasa ngwa ngwa nkeHPMCA na-eji glyoxal agwọ elu ya, ọ na-agbasakwa ngwa ngwa n'ime mmiri oyi, mana ọ naghị agbaze nke ọma. Ọ na-agbaze naanị mgbe viscosity mụbara. Ụdị ngwa ngwa ahụ enweghị ọgwụgwọ elu ya na glyoxal. Ọ bụrụ na ọnụọgụ glyoxal buru ibu, mgbasa ahụ ga-adị ngwa ngwa, mana viscosity ahụ ga-amụba nwayọ nwayọ, ọ bụrụkwa na ọnụọgụ ahụ pere mpe, ihe dị iche ga-abụ eziokwu.
Oge ozi: Eprel-25-2024