Edemede a dị n'ụdị ajụjụ na azịza nye onye na-agụ akwụkwọ gbasara ihe ọmụma metụtara hydroxypropyl methyl cellulose ether, ka i wee nwee nghọta miri emi nke HPMC n'ime obere oge, iji họrọ ma jiri ụdị ngwaahịa a nke ọma na mmepụta n'ezie.
1, kedu ihe bụ isi eji eme ihe?hydroxypropyl methyl cellulose (HPMC)?
A na-eji HPMC eme ihe n'ọtụtụ ebe n'ihe gbasara 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, ọkwa nri na ọkwa ahụike site na iji ya. Ugbu a, ọtụtụ n'ime ọkwa owuwu ụlọ, na ọkwa owuwu, oke ntụ ntụ putty buru ibu, ihe dị ka 90% ka eji eme ntụ ntụ putty, ihe fọdụrụ bụ iji mee simenti na gluu.
2, hydroxypropyl methyl cellulose (HPMC) kewara n'ọtụtụ ụzọ, kedu ihe dị iche n'iji ya?
Enwere ike kewaa HPMC n'ụdị ngwọta ozugbo na nke ọkụ, ngwaahịa ozugbo, na mmiri oyi gbasaa ngwa ngwa, na-apụ n'anya n'ime mmiri, n'oge a mmiri ahụ enweghị viscosity, n'ihi na HPMC na-agbasa n'ime mmiri, enweghị ezigbo mgbaze. Ihe dị ka nkeji abụọ, viscosity nke mmiri ahụ na-abawanye nwayọ nwayọ, na-emepụta viscosous colloid doro anya. Ngwaahịa ndị na-agbaze ọkụ, na mmiri oyi, nwere ike ịgbasa ngwa ngwa na mmiri ọkụ, na-apụ n'anya na mmiri ọkụ, mgbe okpomọkụ dara ruo okpomọkụ ụfọdụ, viscosity na-apụta nwayọ nwayọ, ruo mgbe e guzobere viscosous colloid doro anya. Enwere ike iji ngwọta ọkụ naanị na putty powder na mortar, na mmiri mmiri gluu na agba, enwere ike inwe ihe omume otu, enweghị ike iji. NLEKWUTA NSOGBU Ngwa, ỌNỤ AHỤ́ OLE DỊ MMA, NA-EME KA Ị GHARA ỊGBANWE IKE NA NDUKU CHILD NA MMIRI, NA NA MMIRI MMANỤ NA MKPA, IHE NILE NWERE IKE IJI, NA-ENWEGHỊ IHE NTỌCHICHE.
3, usoro mgbaze hydroxypropyl methyl cellulose (HPMC) nwere ndị ahụ?
– A: Usoro ịgbaze mmiri ọkụ: n'ihi na HPMC anaghị agbaze na mmiri ọkụ, yabụ enwere ike ịgbasa HPMC n'oge mbụ n'ime mmiri ọkụ, wee gbazee ngwa ngwa mgbe ọ jụrụ oyi, a kọwara ụzọ abụọ a na-ahụkarị dị ka ndị a: 1), n'ime akpa ahụ n'ime oke mmiri ọkụ achọrọ, wee kpoo ya ọkụ ruo ihe dị ka 70℃. Jiri nwayọ tinye hydroxypropyl methylcellulose n'okpuru mgbagharị nwayọ, HPMC malitere ise n'elu mmiri ahụ, wee jiri nwayọ mepụta slurry, n'okpuru mgbagharị mee ka slurry ahụ dị jụụ. 2), tinye ego achọrọ nke 1/3 ma ọ bụ 2/3 mmiri n'ime akpa ahụ, wee kpoo ya ọkụ ruo 70℃, dịka usoro nke 1), mgbasa HPMC, nkwadebe nke slurry mmiri ọkụ; Mgbe ahụ tinye mmiri oyi fọdụrụ na slurry ọkụ ahụ, kpalie ma jụọ oyi ngwakọta ahụ. Usoro ngwakọta ntụ ntụ: Ntụ ntụ HPMC na ọtụtụ ihe ndị ọzọ nwere ntụ ntụ, agwakọtara ya nke ọma na blender, mgbe etinyere mmiri ka ọ gbazee, mgbe ahụ HPMC nwere ike ịgbaze n'oge a, mana ọ bụghị njikọta, n'ihi na obere akụkụ ọ bụla, naanị obere ntụ ntụ HPMC, mmiri ga-agbaze ozugbo. – Ụlọ ọrụ mmepụta ntụ ntụ na ngwa agha na-eji usoro a. A NA-EJI hydroxypropyl METHYL cellulose (HPMC) DỊKA ihe na-eme ka ihe sie ike na ihe na-ejide mmiri n'ime ngwa agha ntụ ntụ.
4, kedu ka o si dị mfe ma dị mfe ịchọpụta àgwà nke hydroxypropyl methyl cellulose (HPMC)?
– Azịza: (1) ọcha: ọ bụ ezie na ọcha enweghị ike ikpebi ma ọ bụHPMCỌ dị mma iji, ọ bụrụkwa na etinyere ya n'usoro mmepụta nke ihe na-eme ka ihe dị ọcha, ọ ga-emetụta àgwà ya. Agbanyeghị, ngwaahịa dị mma na-abụkarị ọcha. (2) ịdị mma: ịdị mma HPMC na-abụkarị 80 mesh na 100 mesh, 120 pere mpe maka nzube, Hebei HPMC na-abụkarị 80 mesh, ịdị mma ahụ ka mma, n'ozuzu ya ka mma. (3) nnyefe: hydroxypropyl methyl cellulose (HPMC) n'ime mmiri, nhazi nke colloid doro anya, lee nnyefe ya, ka nnyefe ahụ ka ukwuu, ka mma, ihe na-adịghị agbaze n'ime. Ịba ụba nke ihe na-eme ka ihe dị n'ime dị mma n'ozuzu ya, ihe na-eme ka ihe dị n'ime dị mma, ihe na-eme ka ihe dị n'ime dị njọ, mana enweghị ike igosi na ịdị mma nke mmepụta ihe na-eme ka ihe dị n'ime dị mma karịa nke mmepụta ihe na-eme ka ihe dị n'ime dị n'akụkụ kwụ ọtọ, ọtụtụ ihe na-ekpebi ịdị mma ngwaahịa. (4) ike ndọda kpọmkwem: ka ike ndọda kpọmkwem dịkwuo, ka ịdị arọ ahụ ka mma. Karịa ihe dị mkpa, n'ozuzu n'ihi na ọdịnaya nke hydroxypropyl dị elu, ọdịnaya hydroxypropyl dị elu, mgbe ahụ njigide mmiri ka mma.
5, hydroxypropyl methyl cellulose (HPMC) n'ọnụọgụ ntụ ntụ putty?
– Azịza: HPMC n'iji usoro onunu ogwu eme ihe n'ezie, site na gburugburu ebe obibi, okpomọkụ, ịdị mma nke calcium ash mpaghara, usoro ntụ ntụ putty na "ihe ndị ahịa chọrọ maka ịdị mma", enwerekwa ihe dị iche. N'ozuzu, usoro ntụ ntụ putty na-eguzogide mmiri na kilogram 4 - kilogram 5 n'etiti. Dịka ọmụmaatụ: ntụ ntụ putty Beijing, nke a na-etinyekarị kilogram 5; Na Guizhou, ọtụtụ n'ime ha dị kilogram 5 n'oge ọkọchị na kilogram 4.5 n'oge oyi. Ọnụọgụ Yunnan dị obere, n'ozuzu kilogram 3 - kilogram 4 na ndị ọzọ. Usoro ntụ ntụ HPMC na putty 821 na-abụkarị kilogram 2 ~ 3.
6, hydroxypropyl methyl cellulose (HPMC) oke viscosity kwesịrị ekwesị?
– Azịza: GWỤỌ NGWỤ NKE NDỤ NWA NGWA 100,000 Ọ dị mma, ihe achọrọ n'ime ngwa agha bụ ihe dị ogologo karịa, chọrọ ikike iji ya ruru puku 150. Ọzọkwa, ọrụ kachasị mkpa nke HPMC bụ idobe mmiri, wee soro ya mee ka ọ dị arọ. Na ntụ ntụ putty, ọ bụrụhaala na idobe mmiri dị mma, viscosity dị ala (7-80,000), o nwekwara ike, n'ezie, viscosity ahụ buru ibu, idobe mmiri dị mma karịa, mgbe viscosity karịrị puku 100, viscosity ahụ enweghị mmetụta dị ukwuu na idobe mmiri.
7, hydroxypropyl methyl cellulose (HPMC) kedu ihe ndị bụ isi na-egosi teknụzụ?
A: Ọdịnaya Hydroxypropyl na viscosity, nke bụ ihe ọtụtụ ndị na-eji na-echegbu onwe ha. Ọdịnaya Hydroxypropyl dị elu, njigide mmiri ka mma n'ozuzu. Viscosity, njigide mmiri, ikwu (mana ọ bụghị nke zuru oke) dịkwa mma, na viscosity, na simenti smor ka mma iji ụfọdụ.
8, hydroxypropyl methyl cellulose (HPMC) ihe ndị bụ isi bụ ihe ndị dị mkpa?
– Azịza: hydroxypropyl methyl cellulose (HPMC) nke ihe ndị bụ isi: owu a nụchara anụcha, chloromethane, propylene oxide, ihe ndị ọzọ dị na ya, mbadamba alkali, acid, toluene, isopropyl alcohol, wdg.
9, HPMC n'itinye ntụ ntụ putty n'ọrụ, kedu ọrụ bụ isi, ma ọ bụ kemistri?
HPMC na ntụ ntụ putty, ịchacha, idobe mmiri na imepụta ọrụ atọ. Ịchacha: Enwere ike ime ka cellulose sie ike ka ọ rụọ ọrụ nkwụsịtụ, ka ihe ngwọta ahụ wee nọgide na-adị otu, na-egbochi mmiri ịkwọ. Ịdobe mmiri: mee ka ntụ ntụ putty kpọọ nkụ nwayọ nwayọ, mmeghachi omume calcium ntụ ntụ n'okpuru ọrụ mmiri. Mmebe: Cellulose nwere mmetụta mmanụ, nwere ike ime ka ntụ ntụ putty nwee ezigbo owuwu. HPMC anaghị esonye na mmeghachi omume kemịkalụ ọ bụla, naanị na-arụ ọrụ enyemaka. Mmiri Putty agbakwunyere, na mgbidi, bụ mmeghachi omume kemịkalụ, n'ihi na enwere mmepụta nke ihe ọhụrụ, ntụ ntụ putty n'elu mgbidi site na mgbidi, gwerie ya ka ọ bụrụ ntụ, wee jiri ya, ọ bụghịzi, n'ihi na emepụtala ihe ọhụrụ (calcium carbonate). Isi ihe mejupụtara ntụ ntụ calcium isi awọ bụ: Ca(OH)2, CaO na obere ngwakọta CaCO3, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O ntụ calcium n'ime mmiri na ikuku n'okpuru ọrụ CO2, nhazi nke calcium carbonate, na HPMC naanị njigide mmiri, mmeghachi omume ka mma nke calcium ntụ, nke ya esoghị na mmeghachi omume ọ bụla.
10, HPMC cellulose na-abụghị ionic ether, kedu ihe bụ non-ionic?
A: N'ozuzu, nonionic bụ ihe dị n'ime mmiri nke na-anaghị ionize. Ionization bụ usoro e si ekewa electrolyte n'ime ion ndị na-ebugharị n'enweghị nsogbu n'ime ihe mgbaze kpọmkwem, dị ka mmiri ma ọ bụ mmanya. Dịka ọmụmaatụ, sodium chloride (NaCl), nnu anyị na-eri kwa ụbọchị, na-agbaze na mmiri ma na-agbanwe ion iji mepụta ion sodium ndị na-agagharị n'enweghị nsogbu (Na+) nke nwere chajị dị mma na ion chloride (Cl) nke nwere chajị na-adịghị mma. N'ikwu ya n'ụzọ ọzọ, HPMC dị na mmiri anaghị ekewa n'ime ion ndị a na-agbanye, mana ọ dị ka molekul.
11, okpomọkụ jel hydroxypropyl methylcellulose na gịnị ka ọ metụtara?
– Azịza: Okpomọkụ gel nke HPMC metụtara ọdịnaya methoxy ya. Ka ọdịnaya methoxy dị ala, otú ahụ ka okpomọkụ gel na-adị elu.
12. Enwere njikọ dị n'etiti ntụ ntụ putty na HPMC?
– Azịza: ntụ ntụ ntụ putty na ịdị mma nke calcium nwere mmekọrịta dị mma, HPMC enweghịkwa mmekọrịta dị ukwuu. Ọdịnaya calcium dị ala na oke nke CaO, Ca(OH)2 na ntụ calcium ekwesịghị ekwesị, ga-eme ka ntụ ntụ daa. Ọ bụrụ na ọ nwere ihe jikọrọ ya na HPMC, mgbe ahụ njide mmiri nke HPMC adịghị mma, ọ ga-emekwa ka ntụ ntụ daa. Maka ihe ụfọdụ, biko lee ajụjụ nke 9
13, ụdị hydroxypropyl methylcellulose mmiri oyi na ụdị hydroxypropyl methylcellulose mmiri oyi na ụdị ekpo ọkụ na-agbaze n'ime usoro mmepụta, kedu ihe dị iche?
– A: Ụdị HPMC nke mmiri oyi na-agbaze mgbe a gwọchara glyoxal surface, tinye ya na mmiri oyi na-agbaze ngwa ngwa, mana ọ gbazeghị nke ọma, viscosity na-agbaze, a na-agbazekwa ya. A naghị eji glyoxal agwọ ụdị nke na-agbaze n'ọkụ. Olu nke glyoxal buru ibu, mgbasa ya dị ngwa ngwa, mana viscosity ahụ dị nwayọ, olu ya dị obere, n'ụzọ megidere nke ahụ.
14, hydroxypropyl methyl cellulose (HPMC) nwere isi nke ihe na-eme?
– Azịza: HPMC nke e ji usoro ihe mgbaze mepụta bụ nke toluene na isopropyl alcohol mere dị ka ihe mgbaze. Ọ bụrụ na ịsa ahụ adịghị mma nke ukwuu, a ga-enwe ntakịrị ụtọ fọdụrụ.
15, ojiji dị iche iche, kedu ka esi ahọrọ hydroxypropyl methyl cellulose (HPMC) kwesịrị ekwesị?
– Azịza: Itinye ntụ ntụ putty: ihe achọrọ dị ala, viscosity bụ 100,000, ọ dị mma, ihe dị mkpa bụ idobe mmiri ka ọ ka mma. Itinye ụrọ: ihe achọrọ dị elu, ihe achọrọ bụ viscosity dị elu, 150,000 kwesịrị ịdị mma. Itinye gluu: achọrọ ngwaahịa ozugbo, viscosity dị elu.
16, hydroxypropyl methylcellulose kedu aha ya bụ?
A: Hydroxypropyl Methyl Cellulose, Bekee: Hydroxypropyl Methyl Cellulose mkpụmkpụ: HPMC ma ọ bụ aha MHPC: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC n'itinye ntụ ntụ putty, ntụ ntụ putty, gịnị kpatara ya?
HPMC na ntụ ntụ putty, ịka nká, idobe mmiri na imepụta ọrụ atọ. Anaghị esonye na mmeghachi omume ọ bụla. Ihe kpatara afụfụ ahụ: 1, mmiri ahụ na-etinye oke. 2, ala ya akpọghị nkụ, n'elu ya ma kpụchaa otu oyi akwa, ọ dịkwa mfe ịfụ.
18. Usoro ntụ ntụ putty maka mgbidi dị n'ime na mpụta?
– Azịza: ntụ ntụ putty na-anaghị eguzogide mmiri maka mgbidi dị n'ime: 750 ~ 850KG nke calcium dị arọ, 150 ~ 250KG nke calcium isi awọ, 4 ~ 5KG nke cellulose ether, na 1 ~ 2KG nke ntụ ntụ polyvinyl alcohol nwere ike itinye nke ọma; Ntụ ntụ putty mgbidi dị n'èzí: simenti ọcha 350KG, calcium dị arọ 500-550kg, calcium isi awọ 100-150kg, ntụ ntụ latex 8-12kg, cellulose ether 5KG, eriri osisi 3KG.
19. Gịnị bụ ihe dị iche n'etiti?HPMCnaMC?
– MC maka methyl cellulose, bụ owu a nụchara anụcha mgbe a gwọchara alkali, ya na methane chloride dị ka ihe na-eme ka etherification dị, site na usoro mmeghachi omume na cellulose ether. N'ozuzu, ogo nnọchi bụ 1.6~2.0, ihe na-agbazekwa na-agbanwe dabere na ogo nnọchi. Ọ bụ cellulose ether na-abụghị ionic.
(1) Njide mmiri nke methyl cellulose dabere na oke mgbakwunye ya, viscosity, ịdị mma nke ihe dị n'ime ya na ọsọ nke ịgbasa. Na-agbakwụnye nnukwu ego, obere ịdị mma, viscosity, na oke nchekwa mmiri. N'ime ha, oke nke agbakwunyere na ọnụego nchekwa mmiri nwere mmetụta kachasị ukwuu, viscosity na ọkwa nke nchekwa mmiri adịghị nhata na mmekọrịta ahụ. Oke mgbasa na-adaberekarị na ogo mgbanwe elu na ịdị mma nke ihe dị n'ime cellulose. Na cellulose ether dị n'elu, ọnụego nchekwa mmiri methyl cellulose na hydroxypropyl methyl cellulose dị elu.
(2) Enwere ike ịgbaze methyl cellulose na mmiri oyi, mmiri ọkụ agbaze ga-enwe nsogbu, mmiri mmiri ya na pH = 3 ~ 12 dị nnọọ mma. 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 moto gafere 40℃, nchekwa mmiri nke methyl cellulose ga-aka njọ nke ukwuu, na-emetụta nnukwu nrụpụta moto.
(4) Methyl cellulose nwere mmetụta doro anya n'iwuli na njikọta nke ngwa agha. N'ebe a, "njikọta" na-ezo aka na ike njikọta dị n'etiti ngwa ọrụ onye ọrụ na ihe mkpuchi mgbidi, ya bụ, iguzogide nkedo nke ngwa agha. Ihe onwunwe nke ihe mgbakwasị ahụ buru ibu, iguzogide nkedo nke ngwa agha buru ibu, ike ndị ọrụ chọrọ n'oge ojiji dịkwa ukwuu, yabụ ihe onwunwe nke ngwa agha adịghị mma.
N'ime ngwaahịa cellulose ether, njikọta methyl cellulose dị n'ọkwa dị ala. A na-eji owu a nụchara anụcha eme HPMC maka hydroxypropyl methyl cellulose, nke e ji owu eme mgbe emechara ọgwụgwọ alkalization, yana propylene oxide na chloromethane dị ka ihe na-eme ka etherifying dị n'ime ya, site na usoro mmeghachi omume ma ejiri ether agwakọtara nke na-abụghị ionic mee ya. Nha nnọchi ya na-abụkarị 1.2~2.0. Oke nke ọdịnaya methoxy na ọdịnaya hydroxypropyl na-emetụta ihe onwunwe ya.
(1) hydroxypropyl methyl cellulose nke a na-agbaze na mmiri oyi, mmiri ọkụ a na-agbaze ga-enwe nsogbu. Mana okpomọkụ ya na-agbaze na mmiri ọkụ dị elu karịa nke methyl cellulose. A na-emekwa ka methyl cellulose na-agbazekwa na mmiri oyi ka mma nke ukwuu.
(2) viscosity nke hydroxypropyl methyl cellulose metụtara ibu molekul ya, ibu molekul buru ibu bụkwa viscosity dị elu. Okpomọkụ ga-emetụtakwa viscosity ya, okpomọkụ na-abawanye, viscosity na-ebelata. Agbanyeghị, viscosity nke okpomọkụ 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 alkali, mmiri mmiri ya na-adịkwa mma nke ukwuu n'ogo pH = 2 ~ 12. Caustic soda na mmiri lime enweghị mmetụta dị ukwuu na ihe onwunwe ya, mana alkali nwere ike ime ka ọsọ mgbaze ya dịkwuo ngwa ngwa ma melite viscosity nke pin ahụ. Hydroxypropyl methyl cellulose nwere nkwụsi ike na nnu izugbe, 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 ọnụọgụ nke agbakwunyere ya, viscosity ya, wdg., otu ọnụego njigide mmiri dị elu karịa methyl cellulose.
(5) Enwere ike ịgwakọta hydroxypropyl methyl cellulose na ngwakọta polymer na-agbaze mmiri iji bụrụ ihe ngwọta viscosity dị otu, nke dị elu karịa. Dịka polyvinyl alcohol, starch ether, chịngọm osisi 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 ike iguzogide enzymatic karịa methyl cellulose, ohere nke mmebi enzymatic nke ngwọta ya dị ala karịa nke methyl cellulose.
20, mmekọrịta dị n'etiti viscosity na okpomọkụ nke HPMC, nke kwesịrị nlebara anya na ojiji bara uru?
– Azịza: Ọbara ọbara nke HPMC na-adaba n'ọnọdụ okpomọkụ dị iche iche, ya bụ, ọbara ọbara na-abawanye ka ọ na-ebelata. Mgbe anyị na-ekwu maka ọbara ọbara nke ngwaahịa, anyị na-ekwu maka nsonaazụ nke ịtụ ihe ngwọta mmiri ya nke 2% na okpomọkụ nke ogo Celsius 20. N'ọrụ bara uru, n'ebe nwere nnukwu ọdịiche okpomọkụ dị n'etiti oge okpomọkụ na oyi, a ga-elebara ndụmọdụ ahụ anya iji obere ọbara ọbara na oyi, nke na-eme ka ọ dịkwuo mma maka owuwu. Ma ọ bụghị ya, mgbe okpomọkụ dị ala, ọbara ọbara nke cellulose ga-abawanye, mgbe a na-akpụcha ya, mmetụta ya ga-adị arọ. Ọbara ọbara nke dị n'etiti:75000-100000 A na-ejikarị ya eme ihe maka ihe kpatara putty: ezigbo njigide mmiri viscosity dị elu:150000-200000 A na-ejikarị ya eme ihe maka ihe ndị dị na polystyrene mkpuchi okpomọkụ ihe eji eme ihe gluu ihe na ihe mkpuchi iko na ihe mkpuchi okpomọkụ. Ihe kpatara ya: ọbara ọbara, ọ dịghị mfe ịtụfu ntụ na ịgba mmiri, melite owuwu ahụ. Ma n'ozuzu, ka viscosity dị elu, otú ahụ ka viscosity ga-esi ka mma, ọtụtụ ụlọ ọrụ mmepụta ihe mkpofu akọrọ na-atụle ọnụ ahịa ya, ya mere ọtụtụ ụlọ ọrụ mmepụta ihe mkpofu akọrọ na-atụle ọnụ ahịa ya, yana cellulose viscosity dị n'etiti (75,000-100000) iji dochie cellulose viscosity dị ala (20,000-40000) iji belata ọnụọgụ mgbakwunye.
Oge ozi: Eprel-25-2024