1, kedu ihe bụ isi eji hydroxypropyl methyl cellulose (HPMC) eme ihe?
Azịza:HPMCA na-ejikarị ya eme ihe n'ihe owuwu ụlọ, 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 ụlọ, ọkwa nri na ọkwa ahụike dịka ojiji si dị. Ugbu a, a na-ejikarị ya arụ ọrụ n'ụlọ, n'ọkwa owuwu ụlọ, ọnụọgụ ntụ ntụ putty buru ibu nke ukwuu, ihe dị ka 90% ka a na-eji eme ntụ ntụ putty, ihe fọdụrụ bụ iji simenti na gluu mee simenti.
2, hydroxypropyl methyl cellulose (HPMC) kewara n'ọtụtụ ụdị, kedu ihe dị iche n'etiti ojiji ya?
Azịza: Enwere ike kewaa HPMC n'ime ngwa ngwa na nke na-agbaze n'ọkụ, ngwaahịa ngwa ngwa, na mmiri oyi gbasaa ngwa ngwa, na-apụ n'anya n'ime mmiri, n'oge a mmiri mmiri enweghị viscosity, n'ihi na HPMC na-agbasa n'ime mmiri, enweghị ezigbo mgbaze. Ihe dị ka nkeji 2, viscosity nke mmiri mmiri ahụ na-abawanye nwayọ nwayọ, na-emepụta colloid viscous doro anya. Ngwaahịa ndị na-agbaze n'ọkụ, na njikọta mmiri oyi, nwere ike ịnọ na mmiri ọkụ, gbasaa ngwa ngwa, na-apụ n'anya n'ime mmiri ọkụ, ruo mgbe okpomọkụ dara ruo okpomọkụ ụfọdụ, viscosity na-apụta nwayọ nwayọ, ruo mgbe e guzobere viscous colloid doro anya. Enwere ike iji ụdị mmiri ọkụ na-agbaze naanị na ntụ ntụ putty na ngwa agha, na gluu mmiri mmiri na mkpuchi, nwere ike ịpụta ihe na-agbaze, enweghị ike iji. Ụdị mmiri ọkụ ozugbo, oke ngwa dị obosara, na enwere ike ịme ihe ike na ntụ ntụ nwa na ngwa agha, na gluu mmiri mmiri na mkpuchi, enwere ike iji ihe niile, enweghị ihe mgbochi.
3, usoro mgbasa hydroxypropyl methyl cellulose (HPMC) nwere ndị ahụ?
– azịza: usoro ịgbaze mmiri ọkụ: n'ihi na HPMC anaghị agbaze na mmiri ọkụ, yabụ enwere ike ịgbasa HPMC n'oge mbụ n'otu oge na mmiri ọkụ, wee gbazee ngwa ngwa mgbe ọ jụrụ oyi, a kọwara ụzọ abụọ a na-ahụkarị dị ka ndị a:
1) Jupụta akpa ahụ na mmiri ọkụ dịka ịchọrọ ma kpoo ya ọkụ ruo ihe dị ka 70℃. A na-etinye Hydroxypropyl methyl cellulose nwayọ nwayọ mgbe a na-akpali ya nwayọ, HPMC na-efegharị n'elu mmiri, wee jiri nwayọọ nwayọọ mepụta slurry, nke a na-eme ka ọ jụọ oyi mgbe a na-akpali ya.
2) Tinye 1/3 ma ọ bụ 2/3 nke mmiri achọrọ n'ime akpa ahụ wee kpoo ya ọkụ ruo 70℃. Gbasaa HPMC dịka usoro 1 si dị iji kwadebe mmiri ọkụ; Mgbe ahụ tinye mmiri oyi fọdụrụ na mmiri ọkụ ahụ wee jụọ oyi mgbe ị gwakọtara ya.
Usoro ngwakọta ntụ ntụ: Ntụ ntụ HPMC na ọtụtụ ihe ndị ọzọ e ji ntụ ntụ mee, gwakọta ya nke ọma na blender, wee tinye mmiri ka ọ gbazee, n'oge a HPMC nwere ike ịgbaze, ọ bụghị ịgbakọta, n'ihi na obere akụkụ ọ bụla, naanị obere ntụ ntụ HPMC, mmiri ga-agbaze ozugbo. – Ndị na-emepụta ntụ ntụ na ngwa agha na-eji usoro a. [Hydroxypropyl methyl cellulose (HPMC) eji dị ka ihe na-eme ka ihe sie ike na ihe na-ejide mmiri na ngwa agha ntụ ntụ putty.
4, kedu ka esi achọpụta ịdị mma nke hydroxypropyl methyl cellulose (HPMC) dị mfe ma dị mfe nghọta?
Azịza: (1) ọcha: ọ bụ ezie na ọcha enweghị ike ikpebi ma HPMC ọ dị mma, ọ bụrụkwa na etinyere ya na usoro mmepụta ihe ọcha, ọ ga-emetụta àgwà ya. Agbanyeghị, ọtụtụ ngwaahịa dị mma nwere ezigbo ọcha. (2) ịdị mma: ịdị mma HPMC na-abụkarị 80 mesh na 100 mesh, ihe na-erughị ebumnuche 120, Hebei HPMC bụkarị 80 mesh, ịdị mma ka mma, n'ozuzu, ka mma. (3) nnyefe: hydroxypropyl methyl cellulose (HPMC) n'ime mmiri, nhazi nke colloid doro anya, lee nnyefe ya, ka nnyefe ahụ ka mma, ihe ndị na-anaghị agbaze n'ime obere. Mgbasa nke reactor kwụ ọtọ dị mma n'ozuzu, nke reactor kwụ ọtọ ka njọ, mana ọ pụtaghị na ịdị mma nke mmepụta nke reactor kwụ ọtọ ka mma karịa nke reactor kwụ ọtọ. E nwere ọtụtụ ihe iji chọpụta ịdị mma nke ngwaahịa ahụ. (4) Oke: ka oke ahụ ka ibu, ka ibu ahụ ka mma. Karịa nnukwu, n'ihi na ihe dị n'ime hydroxyl propyl dị elu, ihe dị n'ime hydroxyl propyl dị elu, na-echebe mmiri ka ọ dị mma.
5, viscosity hydroxypropyl methyl cellulose (HPMC) ọ ka mma?
– azịza: ike gwụrụ gị na ntụ ntụ nwa dị mma, ọ na-abụkarị puku narị, ụfọdụ ka elu karịa ihe achọrọ na ngwa agha, chọrọ puku narị iri ise iji. Ọzọkwa, HPMC bụ ọrụ kachasị mkpa nke idobe mmiri, wee soro ya mee ka ọ dị nkọ. Na ntụ ntụ putty, ọ bụrụhaala na idobe mmiri dị mma, viscosity dị ala (7-80 puku), o nwekwara ike, n'ezie, viscosity dị ukwuu, idobe mmiri dị mma karịa, mgbe viscosity karịrị puku narị, viscosity nke idobe mmiri adịghị oke.
6, hydroxypropyl methyl cellulose (HPMC) kedu ihe bụ isi ihe ngosi teknụzụ?
Azịza: Ọdịnaya Hydroxypropyl na viscosity, ọtụtụ ndị ọrụ na-eche maka ihe ngosi abụọ a. Ọdịnaya Hydroxypropyl dị elu, resistence mmiri na-aka mma n'ozuzu. Viscosity, residency mmiri, relative (mana ọ bụghị zuru oke) dịkwa mma, viscosity, simenti smor ka mma iji ụfọdụ.
7, hydroxypropyl methyl cellulose (HPMC) kedu ihe ndị bụ isi e ji arụ ọrụ?
Azịza: hydroxypropyl methyl cellulose (HPMC) bụ isi ihe eji emepụta ihe: owu a nụchara anụcha, chloromethane, propylene oxide, ihe ndị ọzọ eji emepụta ihe, mbadamba alkali, acid, toluene, isopropyl alcohol na ihe ndị ọzọ.
8, HPMC n'itinye ntụ ntụ putty, ọrụ bụ isi, ma ọ bụ ihe gbasara kemistri?
Azịza: HPMC na ntụ ntụ putty, ịka nká, mmiri na ịrụ ọrụ atọ. Ịkpọ nkụ: enwere ike ime ka cellulose sie ike ruo mgbe ọ ga-akwụsị, ka ihe ngwọta ahụ wee dịrị otu elu na ala nke na-egbochi mmiri ịrapara. Ịdochi mmiri: mee ka ntụ ntụ putty kpọọ nkụ nwayọ nwayọ, calcium isi awọ na-enyere aka n'ọrụ mmeghachi omume mmiri. Nhazi: mmanụ cellulose, 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 nkwado. Ntụ ntụ putty na mmiri, n'elu mgbidi, bụ mmeghachi omume kemịkalụ, n'ihi mmepụta nke ihe ọhụrụ, mgbidi nke ntụ ntụ putty si na mgbidi gbadaa, gwerie ya ka ọ bụrụ ntụ, wee jiri ya, ọ dịghị mma, n'ihi na emepụtala ihe ọhụrụ (calcium carbonate). Isi ihe mejupụtara ntụ ntụ calcium isi awọ bụ ngwakọta nke Ca(OH)2,CaO2 na obere CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O Calcium isi awọ dị na mmiri na ikuku n'okpuru ọrụ nke CO2, calcium carbonate, na HPMC naanị mmiri, na-enyere calcium isi awọ aka ka mma, nke ya esonyeghị na mmeghachi omume ọ bụla.
9. HPMC cellulose na-abụghị ionic ether, yabụ gịnị bụ non-ionic?
A: N'ozuzu, ihe ndị na-abụghị ion bụ ihe ndị na-anaghị ion n'ime mmiri. Ionization bụ nkewa nke electrolyte n'ime ion ndị na-agagharị agagharị n'ime ihe mgbaze pụrụ iche, dị ka mmiri ma ọ bụ mmanya. Dịka ọmụmaatụ, nnu anyị na-eri kwa ụbọchị - sodium chloride (NaCl) na-agbaze na mmiri ma na-agbanwe ion iji mepụta ion sodium na-agagharị agagharị (Na+) nwere chajị dị mma na ion chloride (Cl) nwere chajị na-adịghị mma. Ya bụ, HPMC dị na mmiri anaghị ekewa n'ime ion ndị a na-agbaze, kama ọ dị ka molekul.
10. Gịnị metụtara okpomọkụ jel nke hydroxypropyl methyl cellulose?
– Azịza: Okpomọkụ jel nkeHPMCọ na-ejikọta ya na ọdịnaya methoxyl, ka ọdịnaya methoxyl dị ala ↓, otú ahụ ka okpomọkụ gel dị elu.
11, ntụ ntụ ntụ putty na HPMC enweghị mmekọrịta ọ bụla?
Azịza: ntụ ntụ ntụ ntụ ntụ putty na ịdị mma nke calcium ntụ ntụ nwere nnukwu mmekọrịta, HPMC enweghịkwa njikọ buru ibu. Ọdịnaya calcium dị ala nke calcium isi awọ na oke na-ezighi ezi nke CaO na Ca(OH)2 na calcium isi awọ ga-eme ka ntụ ntụ daa. Ọ bụrụ na enwere obere mmekọrịta na HPMC, mgbe ahụ nchekwa mmiri HPMC adịghị mma, ọ ga-emekwa ka ntụ ahụ daa.
12, hydroxypropyl methyl cellulose mmiri oyi na-agbaze ma na-agbaze ọkụ n'ime usoro mmepụta nke gịnị bụ ọdịiche dị na ya?
– Azịza: Ụdị ngwọta mmiri oyi HPMC bụ mgbe a gwọchara glyoxal surface surface, tinye ya na mmiri oyi gbasaa ngwa ngwa, mana ọ gbazeghị nke ọma, viscosity ahụ na-agbaze, agbazekwa. A naghị eji glyoxal agwọ ụdị thermosoluble ahụ n'elu. Ọnụọgụ glyoxal buru ibu, mgbasa ahụ na-agba ọsọ, mana viscosity ahụ dị nwayọ, ọnụọgụ ahụ pere mpe, n'ụzọ megidere nke ahụ.
13, isi hydroxypropyl methyl cellulose (HPMC) kedu ka ọ dị?
– Azịza: HPMC nke e ji usoro ihe mgbaze mepụta bụ nke toluene na isopropyl alcohol. Ọ bụrụ na ịsa ahụ adịghị mma nke ukwuu, a ga-enwe ntakịrị ụtọ fọdụrụ.
14, ojiji dị iche iche, kedu ka esi ahọrọ hydroxypropyl methyl cellulose (HPMC) kwesịrị ekwesị?
– azịza: Kwụsị ịtụ ntụ nwa: ihe achọrọ adịghị mma, viscosity 100,000, ọ dị mma, ọ dị mkpa ichebe mmiri ka ọ dịrị nso. Ngwa ngwa: ihe achọrọ dị elu, ihe achọrọ dị elu, ihe achọrọ dị ka viscosity 150,000 ka mma. Ngwa gluu: mkpa maka ngwaahịa ozugbo, viscosity dị elu.
15. Gịnị bụ aha a na-akpọ hydroxypropyl methyl cellulose?
– AZỊZA: Hydroxypropyl Methyl Cellulose, E dere ya n'ime HPMC ma ọ bụ MHPC, ma ọ bụ Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether.
16.HPMC n'itinye ntụ ntụ putty, ntụ ntụ putty, gịnị kpatara ya?
Azịza: HPMC na ntụ ntụ putty, ịka nká, mmiri na nhazi nke ọrụ atọ. Anaghị esonye na mmeghachi omume ọ bụla. Ihe na-akpata afụfụ: 1, oke mmiri. 2, ala adịghị akpọnwụ akpọnwụ, n'elu oyi akwa ịkpụcha, ọ dịkwa mfe ịfụcha.
17. Gịnị bụ ihe dị iche n'etiti HPMC na MC?
– Azịza:MC bụ methyl cellulose, nke e ji cellulose ether mee site na usoro mmeghachi omume na methane chloride dị ka ihe na-eme ka ikuku dị ọcha mgbe ejiri alkali gwọọ owu a nụchara anụcha. N'ozuzu, ogo nnọchi bụ 1.6~2.0, ihe na-agbazekwa na-agbanwe dabere na ogo nnọchi. Ọ bụ nke cellulose ether nonionic.
(1) Njide mmiri nke methyl cellulose dabere na ọnụọgụ mgbakwunye ya, viscosity, ịdị mma nke ihe dị n'ime ya na ọnụego mgbaze. Na-agbakwụnye nnukwu ego, obere ịdị mma, viscosity, ọnụego njigide mmiri dị elu. N'ime ha, ọnụọgụ mgbakwunye nwere mmetụta kachasị ukwuu na njigide mmiri, viscosity adịghịkwa nhata na njigide mmiri. Ọnụego mgbaze dabere na ogo mgbanwe elu na ịdị mma nke ihe dị n'ime ya. N'ọtụtụ cellulose ethers dị n'elu, ọnụego njigide mmiri methyl cellulose na hydroxypropyl methyl cellulose dị elu.
(2) Methyl cellulose na-agbaze n'ime mmiri oyi, nke siri ike ịgbaze na mmiri ọkụ. Mmiri ya na-agbaze nke ọma n'ime pH = 3 ~ 12. Ọ na-adaba nke ọma na starch, guanidine gum na ọtụtụ surfactants. Gelation na-eme mgbe okpomọkụ ruru okpomọkụ gelation.
(3) Mgbanwe nke 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 nke mortar karịrị 40℃, nchekwa mmiri nke methyl cellulose ga-aka njọ nke ukwuu, nke na-emetụta ike nrụpụta nke mortar nke ukwuu.
(4) Methyl cellulose nwere mmetụta doro anya na ike ịrụpụta na njikọta nke ngwa agha. "Nrapado" ebe a na-ezo aka na njikọta nke onye ọrụ na-enwe n'etiti ngwaọrụ na ihe mkpuchi mgbidi, ya bụ, iguzogide nkedo nke ngwa agha. Nrapado buru ibu, iguzogide nkedo nke ngwa agha buru ibu, ike ndị ọrụ chọrọ n'oge ojiji dịkwa ukwuu, owuwu nke ngwa agha adịghịkwa mma. Na ngwaahịa cellulose ether, njikọta nke methyl cellulose dị n'ọkwa dị ala.
A na-eji owu eme ka HPMC maka hydroxypropyl methyl cellulose dị ọcha mgbe a gwọchara alkali, jiri propylene oxide na chloromethane dị ka ihe na-eme ka ether dị ọcha, site na usoro mmeghachi omume ma ejiri ether agwakọtara nke na-abụghị ionic mee ya. Ogo nnọchi ya na-abụkarị 1.2~2.0. Àgwà ya dị iche iche dabere na oke nke ọdịnaya methoxy na hydroxypropyl.
(1) Hydroxypropyl methyl cellulose na-agbaze ngwa ngwa na mmiri oyi, nke siri ike ịgbaze na mmiri ọkụ. Agbanyeghị, okpomọkụ gelation ya na mmiri ọkụ dị elu karịa nke methyl cellulose. E mekwara ka methyl cellulose na-agbazekwa nke ọma.
(2) Ọbara nke hydroxypropyl methyl cellulose na-adabere na ibu ya, na ka ibu ya dị elu, otú ahụ ka viscosity si dị elu. Okpomọkụ na-emetụtakwa viscosity. Ọbara nke viscosity na-ebelata ka okpomọkụ na-abawanye. Mana mmetụta okpomọkụ ya dị elu dị ala karịa nke methyl cellulose. Ngwọta ahụ kwụsiri ike mgbe echekwara ya na okpomọkụ ụlọ.
(3) Hydroxypropyl methyl cellulose kwụsiri ike na acid na ntọala, mmiri mmiri ya dịkwa oke mma n'etiti pH = 2 ~ 12. Caustic soda na mmiri lime anaghị enwe mmetụta dị ukwuu na ihe ndị dị na ya, mana alkali nwere ike ime ka ọsọ ya gbasaa ngwa ngwa ma melite viscosity. Hydroxypropyl methyl cellulose na-adịgide ruo mgbe nnu zuru oke, mana mgbe njupụta nke mmiri nnu dị elu, viscosity nke mmiri hydroxypropyl methyl cellulose na-abawanye.
(4) Njide mmiri nke hydroxypropyl methyl cellulose dabere na oke na viscosity ya, oke nchekwa mmiri nke hydroxypropyl methyl cellulose dịkwa elu karịa nke methyl cellulose n'otu usoro.
(5) Enwere ike ịgwakọta Hydroxypropyl methyl cellulose na ngwakọta polymer na-agbaze mmiri ka ha wee bụrụ otu ihe ngwọta viscosity dị elu. Dịka polyvinyl alcohol, starch ether, gluu akwụkwọ nri na ihe ndị ọzọ.
(6) Nrapara nke hydroxypropyl methyl cellulose na ihe owuwu ngwa agha dị elu karịa nke methyl cellulose.
(7) Hydroxypropyl methyl cellulose nwere nguzogide enzyme ka mma karịa methyl cellulose, ohere mbibi enzyme ngwọta ya dịkwa ala karịa nke methyl cellulose.
18. Gịnị ka a ga-elebara anya na ya n'ọrụ bara uru nke mmekọrịta dị n'etiti viscosity na okpomọkụ nke HPMC?
Azịza: ỌNỤỌGỤGỤ nkeHPMCọ na-adaba n'ọnọdụ okpomọkụ n'ụzọ megidere nke ọzọ, ya bụ, viscosity na-abawanye ka okpomọkụ na-ebelata. Mgbe anyị na-ekwu maka viscosity nke ngwaahịa, anyị na-ekwu maka viscosity nke 2% nke ngwaahịa ahụ na mmiri na ogo Celsius 20.
N'ọrụ bara uru, n'ebe nwere nnukwu ọdịiche okpomọkụ n'etiti oge okpomọkụ na oge oyi, a ga-amara na a na-atụ aro ka e jiri obere viscosity mee ihe 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, mgbe a na-akpụcha ya, mmetụta ahụ ga-adị arọ.
Ọbara dị n'etiti: 75000-100000 a na-ejikarị eme ihe maka putty.
Ihe kpatara ya: Ezigbo nchekwa mmiri.
Nnukwu viscosity: 150000-200000 bụ ihe eji eme ihe maka mkpuchi ihe mkpuchi polystyrene na ntụ ntụ roba na ihe mkpuchi beads vitrified.
Ihe kpatara ya: oke viscosity, ngwa agha adịghị mfe ịda, ịkwanye mmiri, imeziwanye ihe owuwu ahụ.
Ma n'ozuzu, ka viscosity dị elu, otú ahụ ka nchekwa mmiri ka mma, ọtụtụ ụlọ ọrụ ngwa agha akọrọ, ma a tụlee ọnụ ahịa ya, na-eji cellulose viscosity dị n'etiti (75000-100000) dochie cellulose dị n'etiti na nke dị ala (20000-40000) iji belata ọnụọgụ mgbakwunye.
Oge ozi: Eprel-26-2024