1. Gịnị bụ isi ihe e ji hydroxypropyl methylcellulose (HPMC) eme?
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 simenti na gluu.
2. E nwere ọtụtụ ụdị hydroxypropyl methylcellulose (HPMC), kedu ihe dị iche n'ojiji ha?
Enwere ike kewaa HPMC n'ụdị ngwa ngwa na ụdị ọkụ-mgbaze. Ngwaahịa ụdị ngwa ngwa na-agbasa ngwa ngwa na mmiri oyi ma na-apụ n'anya n'ime mmiri. N'oge a, mmiri mmiri ahụ enweghị viscosity n'ihi na a na-agbasa HPMC naanị na mmiri na-enweghị ezigbo mgbaze. Ihe dị ka nkeji abụọ, viscosity nke mmiri mmiri ahụ na-abawanye nwayọ nwayọ, na-emepụta viscous colloid doro anya. Ngwaahịa agbaze ọkụ, mgbe ha zutere ya na mmiri oyi, nwere ike ịgbasa ngwa ngwa na mmiri ọkụ ma pụọ na mmiri ọkụ. Mgbe okpomọkụ dara ruo na okpomọkụ ụfọdụ, viscosity ga-apụta nwayọ nwayọ ruo mgbe ọ ga-emepụta viscous colloid doro anya. Ụdị agbaze ọkụ nwere ike iji naanị na putty powder na mortar. Na mmiri gluu na agba, a ga-enwe ihe omume nhazi ma enweghị ike iji ya. Ụdị ngwa ngwa nwere ọtụtụ ojiji. Enwere ike iji ya na putty powder na mortar, yana mmiri gluu na agba, na-enweghị ihe mgbochi ọ bụla.
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: tinye hydroxypropyl methylcellulose (HPMC) n'ime mmiri iji mepụta colloid doro anya, ma lelee nnyefe ọkụ ya. Ka nnyefe ọkụ na-abawanye, otú ahụ ka ọ ka mma, na-egosi na enweghị ihe na-agbaze na ya. . Mbufe 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. Kedu ka hydroxypropyl methylcellulose (HPMC) dị na ntụ ntụ putty si dị?
Ọnụọgụ HPMC eji eme ihe n'ọrụ dị irè dịgasị iche dabere na gburugburu ebe obibi ihu igwe, okpomọkụ, ịdị mma nke calcium ntụ mpaghara, usoro ntụ putty na "ịdị mma nke ndị ahịa chọrọ". N'ozuzu, n'etiti kilogram 4 na kilogram 5. Dịka ọmụmaatụ: ọtụtụ ntụ putty na Beijing bụ kilogram 5; ọtụtụ ntụ putty na Guizhou bụ kilogram 5 n'oge ọkọchị na kilogram 4.5 n'oge oyi; ọnụọgụ putty na Yunnan dị obere, n'ozuzu ya dị kilogram 3 ruo kilogram 4, wdg.
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 ndị na-eji ya na-echegbu onwe ha maka ihe ngosi abụọ a. 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 HPMC n'ime ntụ ntụ putty, ọ na-emekwa na kemịkalụ?
N'ime ntụ ntụ putty, HPMC na-arụ ọrụ atọ dịka ịkacha, idobe mmiri na ịrụpụta ihe. Ịkpọ: Enwere ike ime ka cellulose sie ike iji kwụchie ma mee ka ihe ngwọta ahụ dị otu elu na ala, ma gbochie ịda mba. Ịdobe mmiri: mee ka ntụ ntụ putty kpọọ nkụ nwayọ nwayọ, ma nyere calcium ntụ aka imeghachi omume n'okpuru ọrụ mmiri. Nhazi: Cellulose nwere mmetụta na-eme ka mmanụ dị n'ahụ, nke nwere ike ime ka ntụ ntụ putty nwee ezigbo owuwu. HPMC anaghị esonye na mmeghachi omume kemịkalụ ọ bụla, mana ọ na-arụ naanị ọrụ enyemaka. Ịtinye mmiri na ntụ ntụ putty na itinye ya na mgbidi bụ mmeghachi omume kemịkalụ, n'ihi na a na-emepụta ihe ọhụrụ. Ọ bụrụ na ị wepụ ntụ ntụ putty na mgbidi site na mgbidi, 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, ka ọdịnaya methoxy dị ala ↓, otú ahụ ka okpomọkụ gel dị elu ↑.
12. È nwere njikọ dị n'etiti ntụ ntụ putty na HPMC?
Ntufu ntụ ntụ nke ntụ 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. Maka ihe ụfọdụ, biko lee ajụjụ nke 9.
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?
A na-eji glyoxal agwọ ụdị HPMC mmiri oyi ozugbo, ọ na-agbasakwa ngwa ngwa na mmiri oyi, mana ọ naghị agbaze nke ọma. Ọ na-agbaze naanị mgbe viscosity mụbara. A naghị eji glyoxal agwọ ụdị agbaze ọkụ na-ekpo ọkụ. Ọ bụrụ na 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.
14. 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.
15. Kedu otu esi ahọrọ hydroxypropyl methylcellulose (HPMC) kwesịrị ekwesị maka ebumnuche dị iche iche?
Iji ntụ ntụ putty eme ihe: ihe achọrọ dị obere, viscosity bụ 100,000, o zuru ezu, ihe dị mkpa bụ idobe mmiri nke ọma. Iji ụrọ eme ihe: ihe achọrọ dị elu, viscosity dị elu, 150,000 ka mma. Iji gluu eme ihe: a chọrọ ngwaahịa ozugbo nwere viscosity dị elu.
16. Gịnị bụ aha a na-akpọ hydroxypropyl methylcellulose?
Hydroxypropyl methyl cellulose, Bekee: Hydroxypropyl Methyl Cellulose Nchikota: HPMC ma ọ bụ MHPC Aha ndị ọzọ: hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropylmethyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
17. Iji HPMC mee ihe n'ime ntụ ntụ putty, gịnị bụ ihe kpatara afụfụ ahụ n'ime ntụ ntụ putty?
N'ime ntụ ntụ putty, HPMC na-arụ ọrụ atọ dịka ịka mma, idobe mmiri na ịrụpụta ihe. Esola na mmeghachi omume ọ bụla. Ihe kpatara afụfụ: 1. Tinye mmiri gabigara ókè. 2. Ala oyi akwa ahụ akpọghị nkụ, naanị kpụchaa oyi akwa ọzọ n'elu ya, ọ dịkwa mfe ịfụ ụfụfụ.
18. Kedu usoro ntụ ntụ putty maka mgbidi dị n'ime na n'èzí?
Ntụ ntụ putty dị n'ime mgbidi: calcium dị arọ 800KG, calcium ntụ 150KG (starch ether, akwụkwọ ndụ akwụkwọ ndụ dị ọcha, ala Pengrun, citric acid, polyacrylamide, wdg. nwere ike itinye nke ọma)
Ntụ ntụ putty dị n'èzí mgbidi: simenti 350KG calcium dị arọ 500KG quartz ájá 150KG ntụ latex 8-12KG cellulose ether 3KG starch ether eriri osisi 0.5KG 2KG
19. Gịnị bụ ihe dị iche n'etiti HPMC na MC?
MC bụ methyl cellulose, nke e ji cellulose ether mee site n'iji alkali gwọọ owu a nụchara anụcha, jiri methane chloride mee ihe dị ka ihe na-eme ka ikuku dị ọcha, ma na-agafe usoro mmeghachi omume. N'ozuzu, ogo nnọchi bụ 1.6~2.0, ihe na-agbazekwa dịkwa iche na ọkwa nnọchi dị iche iche. Ọ bụ nke cellulose ether na-abụghị ionic.
(1) Njide mmiri nke methyl cellulose dabere na ọnụọgụ mgbakwunye ya, viscosity, ịdị mma nke ihe dị n'ime ya na ọnụego mgbaze. N'ozuzu, ọ bụrụ na ọnụọgụ mgbakwunye buru ibu, ịdị mma ahụ pere mpe, viscosity ahụ buru ibu, ọnụego nchekwa mmiri dị elu. N'ime ha, ọnụọgụ mgbakwunye ahụ nwere mmetụta kachasị ukwuu na ọnụego nchekwa mmiri, ọkwa viscosity adịghịkwa nhata kpọmkwem na ọkwa nchekwa mmiri. Ọnụego mgbaze dabere na oke mgbanwe elu nke ihe dị n'ime cellulose na ịdị mma nke ihe dị n'ime ya. N'ime ihe ndị dị n'ime cellulose ethers dị n'elu, methyl cellulose na hydroxypropyl methyl cellulose nwere ọnụego nchekwa mmiri dị elu.
(2) Methylcellulose na-agbaze n'ime mmiri oyi, ọ ga-esikwa ike ịgbaze n'ime mmiri ọkụ. Mmiri ya na-agbaze nke ọma na pH = 3 ~ 12. Ọ na-adaba nke ọma na starch, guar gum, wdg. na ọtụtụ surfactants. Mgbe okpomọkụ ruru okpomọkụ gelation, gelation na-eme.
(3) Mgbanwe na okpomọkụ ga-emetụta oke nchekwa mmiri nke methyl cellulose. N'ozuzu, ka okpomọkụ dị elu, otú ahụ ka nchekwa mmiri na-aka njọ. Ọ bụrụ na okpomọkụ moto gafere 40°C, nchekwa mmiri nke methyl cellulose ga-ebelata nke ukwuu, nke na-emetụta nnukwu nrụpụta moto ahụ.
(4) Methyl cellulose nwere mmetụta dị ukwuu n'iwuli na njikọta nke ngwa agha. "Nraranye" ebe a na-ezo aka n'ike nraranye dị n'etiti ngwa ọrụ onye ọrụ na ihe mkpuchi mgbidi, ya bụ, nraranye nke ngwa agha. Nraranye dị elu, nraranye nke ngwa agha buru ibu, ike ndị ọrụ chọrọ n'oge ojiji dịkwa ukwuu, arụmọrụ owuwu nke ngwa agha ahụ adịghịkwa mma. Nraranye Methyl cellulose dị n'ọkwa dị ala na ngwaahịa cellulose ether.
HPMC bụ hydroxypropyl methylcellulose, nke bụ ngwakọta ether cellulose na-abụghị ionic nke e ji owu a nụchara anụcha mee mgbe alkalization gasịrị, na-eji propylene oxide na methyl chloride dị ka ihe na-eme ka etherification dị, nakwa site na usoro mmeghachi omume. Ogo nke nnọchi na-abụkarị 1.2~2.0. Àgwà ya dị iche iche n'ihi oke dị iche iche nke ọdịnaya methoxyl na ọdịnaya hydroxypropyl.
(1) Hydroxypropyl methylcellulose na-agbaze ngwa ngwa na mmiri oyi, ọ ga-enwekwa nsogbu mgbe ọ na-agbaze na mmiri ọkụ. Mana okpomọkụ ya na-agbaze na mmiri ọkụ dị elu karịa nke methyl cellulose. A na-emekwa ka mmiri oyi na-agbaze nke ọma ma e jiri ya tụnyere methyl cellulose.
(2) Ọbara hydroxypropyl methylcellulose na-adabere na ibu molekul ya, na ibu molekul ka ọ na-ebu, otú ahụ ka viscosity ya na-abawanye. Okpomọkụ na-emetụtakwa viscosity ya, ka okpomọkụ na-abawanye, viscosity na-ebelata. Agbanyeghị, viscosity ya dị elu nwere mmetụta okpomọkụ dị ala karịa methyl cellulose. Mmiri ya na-adịgide adịgide mgbe echekwara ya na okpomọkụ ụlọ.
(3) Hydroxypropyl methylcellulose kwụsiri ike na acid na alkali, mmiri mmiri ya na-adịkwa mma nke ukwuu n'ogo pH = 2 ~ 12. Caustic soda na mmiri lime anaghị enwe mmetụta dị ukwuu na arụmọrụ ya, mana alkali nwere ike ime ka ọ gbazee ngwa ngwa ma mee ka ọ gbazee ngwa ngwa. Hydroxypropyl methylcellulose na-adịgide adịgide nye nnu nkịtị, mana mgbe njupụta nke mmiri nnu dị elu, njupụta nke mmiri hydroxypropyl methylcellulose na-abawanye.
(4) Njide mmiri nke hydroxypropyl methylcellulose dabere na ọnụọgụ mgbakwunye ya, viscosity, wdg, na ọnụego njigide mmiri ya n'okpuru otu ọnụọgụ mgbakwunye ahụ dị elu karịa nke methyl cellulose.
(5) Enwere ike ịgwakọta Hydroxypropyl methylcellulose na ngwakọta polima mmiri na-agbaze iji mepụta ngwọta viscosity dị otu ma dị elu. Dịka polyvinyl alcohol, starch ether, chịngọm akwụkwọ nri, wdg.
(6) Nrapado nke hydroxypropyl methylcellulose na ihe owuwu ngwa agha dị elu karịa nke methylcellulose.
(7) Hydroxypropyl methylcellulose nwere ike iguzogide enzyme karịa methylcellulose, ọ dịghịkwa ka enzymes ga-emebi mmiri ya karịa methylcellulose.
20. Gịnị ka a ga-elebara anya na ya n'otú e si etinye mmekọrịta dị n'etiti viscosity na okpomọkụ nke HPMC n'ọrụ?
Oke mmiri nke HPMC na-adaba na okpomọkụ, ya bụ, oke mmiri na-abawanye ka okpomọkụ na-ebelata. Oke mmiri nke ngwaahịa anyị na-ezo aka na ya na-ezo aka na nsonaazụ nnwale nke mmiri mmiri 2% ya na okpomọkụ nke ogo Celsius 20.
N'ọrụ bara uru, a ga-amara na n'ebe nwere nnukwu ọdịiche okpomọkụ n'etiti oge okpomọkụ na oge oyi, a na-atụ aro ka e jiri obere viscosity n'oge oyi, nke na-eme ka ọ dịkwuo mma maka owuwu. Ma ọ bụghị ya, mgbe okpomọkụ dị ala, viscosity nke cellulose ga-abawanye, mmetụta aka ga-adịkwa arọ mgbe a na-akpụcha ya.
Ọkwa dị n'etiti: 75000-100000 a na-ejikarị eme ihe maka putty
Ihe kpatara ya: ezigbo njigide mmiri
Nnukwu viscosity: 150000-200000 A na-ejikarị ya eme ihe maka mkpuchi okpomọkụ nke ihe polystyrene, ntụ ntụ roba na ihe mkpuchi okpomọkụ nke microbead vitrified.
Ihe kpatara ya: Ọbara dị elu, ngwa agha ahụ adịghị mfe ịda, ọ na-ada, a na-emezikwa ihe owuwu ahụ nke ọma.
Mana n'ozuzu, ka viscosity dị elu, otú ahụ ka nchekwa mmiri ka mma. Ya mere, n'ịtụle ọnụ ahịa ya, ọtụtụ ụlọ ọrụ mmepụta ihe mkpuchi ntụ ntụ kpọrọ nkụ na-eji cellulose dị ọkara na nke dị ala dochie cellulose dị ọkara na nke dị ala (20000-40000) iji belata ọnụọgụ mgbakwunye.
Oge ozi: Nọvemba-18-2022