1, kedu ihe bụ isi eji hydroxypropyl methyl cellulose (HPMC) eme ihe?
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 site na ojiji. 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 ụdị ngwọta ọkụ, ụdị ngwọta ozugbo, ngwa ngwa gbasaa na mmiri oyi, na-apụ n'anya n'ime mmiri, n'oge a mmiri ahụ enweghị viscosity, n'ihi na HPMC na-agbasa na mmiri, enweghị ezigbo mgbaze. Ihe dị ka nkeji abụọ, viscosity nke mmiri ahụ na-abawanye nwayọ nwayọ, na-emepụta viscous colloid doro anya. Ngwaahịa 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 viscous colloid doro anya. Enwere ike iji ngwọta ọkụ naanị na ntụ ntụ putty na ngwa agha, na gluu mmiri mmiri 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 NDỤ NWA NA ỤGBỌALA, NA NA MMIRI NA MKPỌCHI, IHE NILE NWERE IKE IJI, NA-ENWEGHỊ IHE MGBE E JI YA.
3, usoro mgbaze hydroxypropyl methyl cellulose (HPMC) nwere ndị ahụ?
Usoro ịgbaze mmiri ọkụ: Ebe ọ bụ na HPMC anaghị agbaze na mmiri ọkụ, yabụ enwere ike ịgbasa HPMC n'oge mbụ n'otu aka ahụ na mmiri ọkụ, 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℃. Tinye hydroxypropyl methylcellulose nwayọ nwayọ, HPMC malitere ise n'elu mmiri ahụ, wee jiri nwayọọ nwayọọ mepụta slurry, na-eme ka slurry ahụ dị jụụ.
2), tinye mmiri 1/3 ma ọ bụ 2/3 achọrọ n'ime akpa ahụ, wee kpoo ọkụ ruo 70℃, dịka usoro nke 1) Mgbasa HPMC si dị, nkwadebe nke mmiri ọkụ; Mgbe ahụ tinye mmiri oyi fọdụrụ na slurry ọkụ ahụ, kpalie ma mee ka ngwakọta ahụ dị jụụ.
Usoro ngwakọta ntụ ntụ: Ntụ ntụ HPMC na ọtụtụ ihe ndị ọzọ e ji ntụ ntụ mee, a gwakọtara ya nke ọma na ihe na-agwakọta ntụ ntụ, mgbe etinyere mmiri ka ọ gbazee, 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) eme ihe dị ka ihe na-eme ka ihe sie ike na ihe na-ejide mmiri na ngwa agha ntụ ntụ putty.
4, kedu ka o si dị mfe ma dị mfe ịchọpụta àgwà nke hydroxypropyl methyl cellulose (HPMC)?
(1) ọcha: ọ bụ ezie na ọcha enweghị ike ikpebi ma HPMC dị mfe iji, ọ bụrụkwa na etinyere ya na 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 n'ozuzu ya bụ ntupu 80 na ntupu 100, enweghị nzube 120, Hebei HPMC bụ ntupu 80, ịdị mma 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 na-abawanye, ka mma, ihe na-anaghị agbaze n'ime ya adịghịkwa agbaze. Njupụta nke reactor kwụ ọtọ na-adịkarị mma, reactor kwụ ọtọ na-aka njọ, mana enweghị ike igosi na ịdị mma nke mmepụta reactor kwụ ọtọ ka mma karịa nke mmepụta reactor kwụ ọtọ, ọtụtụ ihe na-ekpebi ịdị mma ngwaahịa.
(4) ike ndọda pụrụ iche: ka ike ndọda kpọmkwem na-abawanye, otú ahụ ka ike ndọda ahụ na-adị arọ karịa. Karia ihe dị mkpa, n'ozuzu n'ihi na ihe dị na hydroxypropyl dị elu, ihe dị na hydroxypropyl dị elu, mgbe ahụ ka ike ndọda mmiri dị mma.
5, hydroxypropyl methyl cellulose (HPMC) n'ọnụọgụ ntụ ntụ putty?
HPMC n'ihe gbasara ojiji nke usoro onunu ogwu, site na gburugburu ebe obibi, okpomọkụ, ịdị mma nke calcium ntụ mpaghara, usoro ntụ ntụ putty na "ihe ndị ahịa chọrọ maka ịdị mma", ha nwekwara ọdịiche dị iche. N'ozuzu, n'etiti kilogram anọ na ise. Dịka ọmụmaatụ: Ntụ ntụ putty Beijing, nke a na-etinyekarị kilogram ise; Na Guizhou, ọtụtụ n'ime ha dị kilogram ise n'oge ọkọchị na kilogram anọ na ọkara n'oge oyi. Ọnụọgụ Yunnan dị obere, n'ozuzu ya bụ kilogram atọ -4 na ihe ndị ọzọ.
6, hydroxypropyl methyl cellulose (HPMC) oke viscosity kwesịrị ekwesị?
ỊGBANWE IKE NA NTUTU CHILD bụ N'IHU 100,000 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?
Ọdịnaya na viscosity nke hydroxypropyl dị elu, ọtụtụ ndị na-eji ya na-echegbu onwe ha maka ihe atụ abụọ a. Ọdịnaya hydroxypropyl dị elu, resistence nke mmiri na-aka mma n'ozuzu ya. Viscosity, residency nke mmiri, relative (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?
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.
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?
N'ozuzu, nonionic bụ ihe na-anaghị ionize na mmiri. Ionization bụ usoro e si ekewa electrolyte n'ime ion ndị na-ebugharị n'enweghị nsogbu n'ime ihe mgbaze pụrụ iche, 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 na-agagharị n'efu (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?
Okpomọkụ jel HPMC metụtara ọdịnaya methoxy ya, ka ọdịnaya methoxy dị ala ↓, otú ahụ ka okpomọkụ jel dị elu ↑.
12. Enwere njikọ dị n'etiti ntụ ntụ putty na HPMC?
Ntụ ntụ ntụ putty na ịdị mma nke calcium nwere mmekọrịta dị mma, HPMC enweghịkwa njikọ 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 na-eme ụdị HPMC mmiri oyi mgbe a gwọchara glyoxal surface, na mmiri oyi gbasaa ngwa ngwa, mana ọ gbazeghị nke ọma, viscosity na-agbaze, wee gbazee. 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?
A na-eji toluene na isopropyl alcohol emepụta HPMC dị ka ihe mgbaze. Ọ bụrụ na ịsa ahụ adịghị mma nke ukwuu, ụtọ ya ga-adị ntakịrị.
15, ojiji dị iche iche, kedu ka esi ahọrọ hydroxypropyl methyl cellulose (HPMC) kwesịrị ekwesị?
NTINYE NTUPU PỌTỤ: ihe achọrọ dị ala, viscosity bụ 100,000, ọ dị mma, ihe dị mkpa bụ idobe mmiri ka mma. Itinye n'ime ihe e ji agba nchara: ihe achọrọ dị elu, ihe achọrọ bụ viscosity dị elu, 150,000 kwesịrị ịdị mma. Itinye n'ime ihe e ji agba gluu: achọrọ ngwaahịa ozugbo, viscosity dị elu.
16, hydroxypropyl methylcellulose kedu aha ya bụ?
Hydroxypropyl Methyl Cellulose, Bekee: Hydroxypropyl Methyl Cellulose mkpụmkpụ: HPMC ma ọ bụ aha MHPC: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose hydroxypropyl Methyl ether Hypromellose, 2-hydroxypropylmethyl 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?
Ntụ ntụ ntụ maka mgbidi dị n'ime: 800KG nke calcium dị arọ na 150KG nke calcium isi awọ (starch ether, akwụkwọ ndụ akwụkwọ ndụ dị ọcha, ala peng, citric acid na polyacrylamide nwere ike itinye nke ọma)
Ntụ ntụ putty dị n'èzí: 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, owu a nụchara anụcha mgbe a gwọchara alkali, yana methane chloride dị ka ihe na-eme ka etherification dị, site na usoro mmeghachi omume iji mee 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'otú e si arụ na otú e si adụkọta ụrọ. N'ebe a, "njikọta" na-ezo aka n'ike nrapado dị n'etiti ngwa ọrụ onye ọrụ na ihe e ji ekpuchi mgbidi, ya bụ, nrapado nke ụrọ. Ihe e ji adụkọta ahụ buru ibu, nrapado nke ụrọ buru ibu, ike ndị ọrụ chọrọ n'oge a na-eji ya dịkwa ukwuu, ya mere ihe e ji arụ ụlọ nke ụrọ adịghị mma. Na ngwaahịa cellulose ether, nrapado methyl cellulose dị n'ọkwa dị ala.
A na-eji owu a nụchara anụcha eme HPMC maka hydroxypropyl methyl cellulose 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.
Gịnị ka a ga-elebara anya na ya n'ọrụ bara uru nke mmekọrịta dị n'etiti viscosity na okpomọkụ nke HPMC?
Oke mmiri nke HPMC na-adaba na okpomọkụ, ya bụ, oke mmiri na-abawanye ka okpomọkụ na-ebelata. Mgbe anyị na-ekwu maka oke mmiri 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 n'etiti oge okpomọkụ na oge oyi, a ga-elebara ndụmọdụ ahụ anya iji 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, mgbe a na-akpụcha ya, mmetụta ya ga-adị arọ.
Ọkwa dị n'etiti: 75000-100000 a na-ejikarị eme ihe maka putty
Ihe kpatara ya: ezigbo njigide mmiri
Nnukwu viscosity: 150000-200000 bụ ihe a na-ejikarị eme ihe maka ihe ndị na-eme ka polystyrene ghara ịdị mma, ihe mkpuchi ihu na ihe mkpuchi ihu iko.
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 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: Sep-14-2022