Kedu ihe bụ Hydroxypropyl Methylcellulose HPMC?

Hydroxypropyl Methylcellulose HPMC, nke a makwaara dị ka Cellulose ether , bụ sịntetik, mmiri na-edozi mmiri nke sitere na cellulose. A na-eme ya site n'ịgbanwe cellulose eke, nke bụ isi ihe na-emepụta ihe ọkụkụ, site na usoro usoro kemịkal.

A na-amata ọkwa hydroxypropyl methylcellulose nke ụlọ ọrụ site na viscosity. A na-ejikarị akara ule ndị a (n'ihe gbasara viscosity).

Viscosity dị ala: 400 bụ nke a na-ejikarị maka ngwa agha na-ebuli onwe ya, mana a na-ebubata ya n'ozuzu ya. Ihe kpatara ya: obere viscosity, ọ bụ ezie na njide mmiri adịghị mma, mana ọkwa dị mma, njupụta ngwa agha dị elu.

Ọkara na elu viscosity: 20000-70000 bụ tumadi ji tile nrapado, caulking gị n'ụlọnga, mgbape-eguzogide ngwa agha, thermal mkpuchi bonding ngwa agha, wdg Ihe kpatara ya: ezi workability, obere mmiri, na elu ngwa agha njupụta.

Gịnị bụ isi ojiji nke hydroxypropyl methylcellulose (HPMC)?

HPMCa na-ejikarị eme ihe na ihe owuwu, mkpuchi, resins synthetic, ceramics, nkà mmụta ọgwụ, nri, textile, ugbo, ịchọ mma, ụtaba na ụlọ ọrụ ndị ọzọ. Enwere ike kewaa HPMC n'ime: ụlọ, nri na ọgwụ. Ka ọ dị ugbu a, ihe ka ọtụtụ n'ime ụlọ ndị a na-emepụta n'ime ụlọ bụ nke ọkwa ụkpụrụ ụlọ. N'ime ọkwa ihe owuwu, ọnụ ọgụgụ nke ntụ ntụ dị nnọọ ukwuu, ihe dịka 90% na-eji ntụ ntụ eme ihe, ndị ọzọ na-eji dị ka ciment mortar na gluu.

Enwere ọtụtụ ụdị hydroxypropyl methylcellulose (HPMC). Kedu ihe dị iche na ojiji ha?

HPMCnwere ike kewaa n'ime ngwa ngwa-agbaze na ọkụ-agbaze, ngwa ngwa-agbaze ngwaahịa. Mgbe ọ na-agbasa ngwa ngwa na mmiri oyi, ọ na-apụ n'anya na mmiri. N'oge a, mmiri mmiri enweghị viscosity n'ihi na HPMC na-agbasasị naanị na mmiri na ọ dịghị ezigbo mgbasa. Ihe dị ka nkeji 2, viscosity nke mmiri mmiri ahụ ji nwayọọ nwayọọ na-ebuwanye ibu, na-eme ka colloid viscous na-egbuke egbuke. Ụdị ngwaahịa na-ekpo ọkụ na-ekpo ọkụ, n'ihe banyere mmiri oyi, nwere ike ịgbasa ngwa ngwa na mmiri ọkụ ma pụọ ​​​​na mmiri ọkụ. Mgbe okpomọkụ na-adaba na ụfọdụ okpomọkụ, viscosity na-apụta nke nta nke nta ruo mgbe a na-emepụta colloid viscous transperent. Ụdị agbaze na-ekpo ọkụ nwere ike iji naanị na ntụ ntụ na ngwa ngwa. N'ime gluu mmiri mmiri na agba, a ga-enwe ihe na-eme ka ọkpụkpụ, nke a na-apụghị iji mee ihe. Ọ dị na ngwa ngwa dị iche iche, na ntinye ntụ ntụ na ngwa agha, yana na gluu mmiri na mkpuchi. Enweghị contraindications.

Kedu ụzọ mgbasa nke hydroxypropyl methylcellulose (HPMC)?

Usoro mgbasa mmiri ọkụ: Ebe ọ bụ na HPMC adịghị agbaze na mmiri ọkụ, enwere ike ịgbasa HPMC mbụ na mmiri ọkụ wee gbazee ngwa ngwa n'oge jụrụ oyi. A na-akọwa ụzọ abụọ a na-ahụkarị dị ka ndị a: 1), tinye n'ime akpa Tinye mmiri ọkụ chọrọ na okpomọkụ ruo ihe dịka 70 Celsius. Hydroxypropyl methylcellulose ji nwayọọ nwayọọ na-agbakwụnye, na HPMC na-ese n'elu mmiri, na mgbe ahụ a slurry ji nwayọọ nwayọọ na-etolite, na slurry na-mma na-akpali akpali. 2) Na-agbakwunye 1/3 ma ọ bụ 2/3 nke mmiri achọrọ na arịa na kpo oku na 70 Celsius C, na-agbasa HPMC dị ka 1) iji kwadebe mmiri ọkụ ọkụ; wee gbakwunye ihe fọdụrụ nke mmiri oyi na mmiri ọkụ Na slurry, ngwakọta ahụ dị jụụ mgbe ọ kpalitere. Usoro ngwakọta ntụ ntụ: a na-agwakọta ntụ ntụ HPMC na nnukwu ihe ndị ọzọ na-eme ntụ ntụ, jikọta ya na blender, wee gbazee na mmiri. N'oge a, HPMC nwere ike igbari na-enweghị agglomeration, n'ihi na onye ọ bụla obere obere akuku nwere nanị obere HPMC. Ntụ ntụ ga-agbaze ozugbo mgbe mmiri na-ejikọta ya. – Usoro a na-eji putty ntụ ntụ na ndị na-emepụta ngwa agha. A na-eji Hydroxypropyl methylcellulose (HPMC) mee ihe dị ka ihe na-ekpu mmiri na ihe na-ejigide mmiri na ngwa ngwa putty.

Kedu otu esi ekpe ikpe ogo hydroxypropyl methylcellulose (HPMC) n'ụzọ dị mfe na nke ọma?

(1) Ọcha: Ọ bụ ezie na ọcha enweghị ike ikpebi ma HPMC ọ dị mfe iji, ma ọ bụrụ na etinye ya na ihe na-egbuke egbuke n'oge usoro mmepụta, ọ ga-emetụta àgwà ya. Otú ọ dị, ngwaahịa ndị dị mma na-abụkarị ndị ọcha. (2) Ịdị mma: Ịdị mma nke HPMC n'ozuzu nwere ntupu 80 na ntupu 100, na ntupu 120 dị obere. The mma mma, mma n'ozuzu. (3) Mbufe: Tinye hydroxypropyl methylcellulose (HPMC) n'ime mmiri iji mepụta colloid transperent, wee lelee nghọta ya. Nke ka mma nke nnyefe, ihe na-adịghị ahụkebe. . The vetikal reactor nwere ezi permeability, na kehoraizin reactor dị njọ, ma ọ pụtaghị na àgwà nke vetikal reactor dị mma karịa nke kettle. A na-ekpebi ogo ngwaahịa ahụ site na ọtụtụ ihe. (4) Ike ndọda pụrụ iche: Ka ike ndọda dị iche iche na-abawanye, otú ahụ ka ibu ahụ dị arọ. Oke dị ukwuu, n'ozuzu n'ihi na ọdịnaya nke hydroxypropyl otu dị elu, na ọdịnaya nke hydroxypropyl otu dị elu, njide mmiri dị mma.

Gịnị bụ ego nke hydroxypropyl methylcellulose (HPMC) na putty ntụ ntụ?

Ọnụ ego ihe owuwu ụlọ HPMCeji na ngwa bara uru dịgasị iche iche na ihu igwe, okpomọkụ, àgwà ash calcium mpaghara, usoro nke putty ntụ ntụ na "àgwà ndị ahịa chọrọ". Na mkpokọta, n'etiti 4 n'arọ na 5 n'arọ. Dị ka ihe atụ: oyi ebe putty ntụ ntụ, ọtụtụ tinye 5 n'arọ; Ebe na-ekpo ọkụ na-abụkarị kilogram 5 n'oge ọkọchị na kilogram 4.5 n'oge oyi.

Kedu ihe bụ viscosity nke hydroxypropyl methylcellulose (HPMC)?

Mgbidi putty ntụ ntụ na-abụkarị 100,000, a na-achọkwa ngwa ngwa akọrọ ka ọ dị elu. Ọ dị mkpa iji 150,000. Ọzọkwa, ọrụ kachasị mkpa nke HPMC bụ idowe mmiri, na-esote thickening. Na ntụ ntụ putty, ọ bụrụhaala na njide mmiri dị mma, viscosity dị ala (70,000-80,000), ọ ga-ekwe omume. N'ezie, viscosity dị ukwuu, njigide mmiri dị n'akụkụ dị mma. Mgbe viscosity karịrị 100,000, mmetụta nke viscosity na njide mmiri adịghị oke oke.

Kedu ihe bụ isi ọrụ aka na-egosi hydroxypropyl methylcellulose (HPMC)?

Ọdịnaya Hydroxypropyl na viscosity, ọtụtụ ndị ọrụ na-eche banyere ihe ngosi abụọ a. Ọ bụrụ na ọdịnaya hydroxypropyl dị elu, njide mmiri na-adịkarị mma. Viscosity, njide mmiri, onye ikwu (kama nke zuru oke), na viscosity dị elu, ka mma na ngwa ngwa ciment.

Kedu ihe bụ isi akụrụngwa maka hydroxypropyl methylcellulose (HPMC)?

Isi akụrụngwa nke hydroxypropyl methylcellulose (HPMC): owu a nụchara anụcha, methyl chloride, propylene oxide, akụrụngwa ndị ọzọ, dị ka caustic soda, acid, toluene, isopropanol.

Gịnị bụ isi ọrụ nke HPMC na ngwa nke putty ntụ ntụ?

HPMC na-arụ ọrụ nke ndim, njigide mmiri na iwu ihe n'ime ntụ ntụ. Ọkpụkpụ: Enwere ike ịgbatị cellulose ka ọ kwụsịtụ, mee ka ngwọta ya bụrụ otu, ma guzogide sag. Njide mmiri: A na-akpọkọta ntụ ntụ putty nwayọọ nwayọọ, na calcium inyeaka ash na-emeghachi omume n'okpuru mmiri. Mwube: Cellulose nwere mmetụta mmanu mmanu, nke nwere ike ime ka uzuzu putty nwee ezigbo ọrụ. HPMC anaghị eso na mmeghachi omume kemịkalụ ọ bụla yana naanị na-arụ ọrụ nkwado. Putty ntụ ntụ na mmiri, na mgbidi, bụ mmeghachi omume kemịkal. N'ihi nhazi nke ihe ọhụrụ, a na-ewepụ ntụ ntụ na-edozi ahụ na mgbidi ahụ, na-agbanye n'ime ntụ ntụ, ma jiri ya mee ihe, ọ gaghị arụ ọrụ, n'ihi na e mepụtala ihe ọhụrụ (calcium carbonate). ). Isi ihe dị na ntụ ntụ calcium ash bụ: Ca (OH) 2, ngwakọta nke CaO na obere ego CaCO3, CaO+H2O=Ca(OH)2-Ca(OH)2+CO2=CaCO3+H2O ash calcium in mmiri na ikuku N'okpuru ọrụ nke CO2, calcium carbonate na-emepụta, na HPMC na-ejigide mmiri naanị, na-enyere aka mmeghachi omume ka mma nke calcium ash, na ọ dịghị etinye aka na mmeghachi omume ọ bụla n'onwe ya. 

HPMC bụ cellulose na-abụghị ionic, yabụ kedu ihe na-abụghị ion?

N'ikwu okwu n'ozuzu, na-abụghị ion bụ ihe na-adịghị na mmiri ma ọ bụghị ionized. Ionization na-ezo aka na usoro a na-ekewapụta electrolyte n'ime ion na-ebugharị n'efu na ihe mgbaze dị ka mmiri ma ọ bụ mmanya. Dịka ọmụmaatụ, nnu nke a na-eri kwa ụbọchị, sodium chloride (NaCl), bụ ionized iji mepụta sodium ion (Na+) na-ebugharị nke ọma na chloride (Cl) na-akwụ ụgwọ na-adịghị mma. Ya bụ, a na-etinye HPMC n'ime mmiri ma ọ dịghị ekewa n'ime ion ebubo, kama ọ dị n'ụdị molecules.

Gịnị bụ gel okpomọkụ nke hydroxypropyl methylcellulose?

Okpomọkụ gel nke HPMC metụtara ọdịnaya methoxy ya. Ọdịnaya methoxy dị ala, ọ na-abawanye okpomọkụ gel.

Ndi ntụ ntụ nke putty nwere mmekọrịta ọ bụla na HPMC?

Ntụ ntụ nke putty na-emetụtakarị àgwà calcium isi awọ, ọ nweghịkwa ihe jikọrọ ya na HPMC. Ọdịnaya calcium dị ala nke calcium ash na oke na-ekwesịghị ekwesị nke CaO na Ca (OH) 2 na calcium ash ga-eme ka mfu ntụ ntụ. Ọ bụrụ na ọ metụtara HPMC, mgbe ahụ, ọ bụrụ na njide mmiri nke HPMC adịghị mma, ọ ga-emekwa ka mfu ntụ ntụ.

Kedu ihe dị iche n'etiti ụdị ngwa ngwa mmiri oyi na ụdị hydroxypropyl methylcellulose na-ekpo ọkụ na usoro mmepụta? A na-agwọ ụdị mmiri oyi HPMC na glioxal, a na-agbasa ya ngwa ngwa na mmiri oyi, mana ọ naghị agbaze n'ezie. Mgbe viscosity dị elu, ọ na-agbaze. A naghị agwọ ụdị soluble dị ọkụ n'elu ya na glycoxal. Mgbe ọnụọgụ glycoxal buru ibu, mgbasa ozi na-adị ngwa ngwa, mana viscosity na-adị ngwa ngwa. 

Gịnị bụ isi nke hydroxypropyl methylcellulose (HPMC)?

HPMC mepụtara site na usoro mgbaze na-eji toluene na mmanya isopropyl dị ka ihe mgbaze. Ọ bụrụ na ịsa ahụ adịghị mma nke ukwuu, a ga-enwe ụtọ fọdụrụnụ.

Kedu otu esi ahọrọ ezigbo hydroxypropyl methylcellulose (HPMC) maka ebumnuche dị iche iche?

Ngwa nke ntụ ntụ putty: ihe achọrọ dị ala, viscosity bụ 100,000, ọ dị mma, ihe dị mkpa bụ idobe mmiri ka mma. Ngwa nke ngwa agha: elu chọrọ, elu viscosity, 150,000 ka mma. Ngwa gluu: chọrọ ngwa ngwa ụdị ngwaahịa, elu viscosity.

Gịnị bụ utu aha nke hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose, HydroxypropylMethylCellulose Mbiri: HPMC ma ọ bụ MHPC utu aha: hypromellose; cellulose hydroxypropyl methyl ether; Hypromellose, cellulose ether, 2-hydroxypropylmethyl cellulos eether. Cellulose hydroxypropyl methyl ether, Hyprolose.

Ngwa nke HPMC na ntụ ntụ, kedu ihe kpatara ụfụfụ na ntụ ntụ ntụ?

HPMC na-arụ ọrụ nke ndim, njigide mmiri na iwu ihe n'ime ntụ ntụ. Esokwala na mmeghachi omume ọ bụla. Ihe kpatara afụ: 1, mmiri dị ukwuu. 2, oyi akwa ala adịghị akọrọ, naanị kpochaa oyi akwa n'elu, ọ dịkwa mfe ịfụfụ.　

N'ime na mpụta mgbidi putty ntụ ntụ usoro?

Ime mgbidi putty ntụ ntụ: arọ calcium 800KG isi awọ calcium 150KG (starch ether, dị ọcha green, penmine ala, citric acid, polyacrylamide, wdg nwere ike nke ọma họrọ ịgbakwunye)

Mpụga mgbidi putty ntụ ntụ: ciment 350KG, calcium dị arọ 500KG, quartz ájá 150KG, latex ntụ ntụ 8-12KG, cellulose ether 3KG, starch ether 0.5KG, osisi fiber 2KG

Kedu ihe dị iche n'etiti HPMC na MC?

MC bụ methyl cellulose. Mgbe ejiri alkali na-edozi owu a nụchara anụcha, a na-eji chloromethane mee ihe dị ka onye na-emepụta ihe na-emepụta ihe, a na-emekwa usoro mmeghachi omume iji kwadebe cellulose ether. Ogo nke nnọchi bụ n'ozuzu 1.6 ruo 2.0, na ogo nke nnọchi dị iche dabere na solubility. Ọ bụ nke nonionic cellulose ether.

(1) Njide mmiri nke methyl cellulose na-adabere na ọnụọgụ nke mgbakwunye, viscosity, urughuru mma na mgbasa ozi. N'ozuzu, ọnụ ọgụgụ nke mgbakwunye dị ukwuu, ịdị mma dị ntakịrị, na viscosity dị ukwuu, na njide mmiri dị elu. Ọnụ ego mgbakwunye ahụ nwere mmetụta kachasị ukwuu na ọnụ ọgụgụ njide mmiri, na ọkwa viscosity adịghị adabere na njide mmiri. Ọnụego mgbasa na-adabere tumadi na ogo nke ngbanwe elu nke mkpụrụ ndụ cellulose na ịdị mma nke ihe ndị ahụ. N'ime cellulose ethers dị n'elu, methylcellulose na hydroxypropylmethylcellulose nwere oke njigide mmiri.

(2) Methylcellulose na-agbaze na mmiri oyi, ọ na-esikwa ike igbari na mmiri ọkụ. Ihe ngwọta aqueous kwụsiri ike na pH = 3 ~ 12. Ọ nwere ezigbo ndakọrịta na starch, guar gum na ọtụtụ ndị ọzọ surfactants. Mgbe okpomọkụ na-erute okpomọkụ gelation, ihe omume gelation na-eme.

(3) Mgbanwe nke okpomọkụ ga-emetụta oke njide mmiri nke methyl cellulose. N'ozuzu, ka okpomọkụ dị elu, na-akawanye njọ njigide mmiri. Ọ bụrụ na okpomọkụ nke ngwa agha gafere 40 Celsius C, njigide mmiri nke methyl cellulose ga-akawanye njọ, nke na-emetụta ọrụ nke ngwa agha ahụ nke ukwuu.

(4) Methyl cellulose nwere mmetụta dị ịrịba ama na arụ ọrụ na adhesion nke ngwa agha. “Nrapara” n’ebe a na-ezo aka n’ike nrapado a na-enwe n’etiti ngwa ngwa onye ọrụ na mkpụrụ mgbidi, ya bụ, nkwụsi ike nke ngwa agha ahụ. Adhesion dị ukwuu, nkwụsị nke ngwa agha ahụ buru ibu, ike nke onye ọrụ ahụ chọrọ n'oge a na-eji ya eme ihe dịkwa ukwuu, na arụ ọrụ nke ngwa agha adịghị mma.

Methylcellulose adhesion bụ etiti na ngwaahịa ether cellulose. HPMC bụ hydroxypropylmethylcellulose, nke bụ nonionic cellulose agwakọta ether kwadebere site a usoro mmeghachi omume site na iji acetal oxide na methyl chloride dị ka ihe etherifying gị n'ụlọnga mgbe alkalization nke nụchara anụcha owu. Ọkwa nke nnọchi bụ n'ozuzu 1.2 ka 2.0. Ọdịdị ya dị iche na-adabere na nha nke ọdịnaya metxyl na ọdịnaya hydroxypropyl.

(1) Hydroxypropyl methylcellulose na-adị mfe mgbaze na mmiri oyi, ọ pụkwara isi ike igbari na mmiri ọkụ. Otú ọ dị, okpomọkụ gelation ya na mmiri ọkụ dị elu nke ukwuu karịa nke methyl cellulose. Mgbasa na mmiri oyi dịkwa mma karịa methyl cellulose. -

(2) The viscosity nke hydroxypropylmethylcellulose metụtara molekụla arọ ya, na viscosity dị elu mgbe molekụla arọ bụ nnukwu. Ọnọdụ okpomọkụ na-emetụtakwa viscosity ya, okpomọkụ na-ebili, na viscosity na-ebelata. Otú ọ dị, viscosity ya nwere okpomọkụ dị ala karịa methyl cellulose. Ihe ngwọta ya kwụsiri ike na ụlọ okpomọkụ.

(3) Hydroxypropyl methylcellulose kwụsiri ike na acids na bases, na ngwọta mmiri ya kwụsiri ike na pH = 2 ~ 12. Caustic soda na mmiri lime adịghị enwe mmetụta dị ukwuu na ihe onwunwe ha, mana alkali na-eme ka ọnụego mgbasa ha dịkwuo elu ma na-abawanye viscosity. Hydroxypropyl methylcellulose nwere nkwụsi ike na nnu n'ozuzu, ma mgbe ntinye nke ngwọta nnu dị elu, viscosity nke hydroxypropyl methylcellulose ngwọta na-emekarị ka ọ dịkwuo elu.

(4) Njide mmiri nke hydroxypropyl methylcellulose dabere na ọnụọgụ nke mgbakwunye, viscosity, wdg, na ọnụ ọgụgụ njide mmiri n'okpuru otu ego dị elu karịa nke methylcellulose.

(5) Hydroxypropyl methylcellulose nwere ike ịgwakọta ya na mmiri polymer compound na-emepụta otu edo, ngwọta viscosity dị elu. Dị ka mmanya polyvinyl, starch ether, chịngọm akwụkwọ nri na ihe ndị ọzọ.

(6) Hydroxypropyl methylcellulose nwere njikọ dị elu na ngwa agha karịa methyl cellulose.

(7).

HPMC viscosity na okpomọkụ mmekọrịta, gịnị ka a ga-aṅa ntị na bara uru ngwa?

Viscosity nke HPMC na-adaba na ọnọdụ okpomọkụ, ya bụ, viscosity na-abawanye na okpomọkụ na-ebelata. Viscosity nke ngwaahịa anyị na-ezokarị aka bụ nsonaazụ nke ịnwale 2% ngwọta mmiri na okpomọkụ nke 20 degrees Celsius. N'ime ngwa ndị bara uru, na mpaghara nwere nnukwu ọdịiche dị n'etiti okpomọkụ na oyi, ekwesịrị iburu n'uche na a na-atụ aro ka iji obere viscosity dị ntakịrị na oyi, nke na-eme ka ọ dịkwuo mma n'ịrụ ụlọ. Ma ọ bụghị ya, mgbe okpomọkụ dị ala, viscosity nke cellulose ga-abawanye, na mgbe a na-ehichapụ ya, mmetụta aka ga-adị arọ. Ọkara viscosity: 75000-100000 A na-ejikarị eme ihe maka putty Ihe kpatara ya: njigide mmiri dị elu: 150000-200000 bụ nke a na-ejikarị eme ihe maka polystyrene granule mkpuchi ngwa agha ntụ ntụ na vitrified microbead mkpuchi ngwa agha. Ihe kpatara ya: viscosity dị elu, ngwa agha adịghị mfe ịdaba Ee, sag, ụlọ ka mma. Ma n'ozuzu, elu nke viscosity, mma njigide mmiri, otú ọtụtụ akọrọ ngwa agha osisi na-atụle na-eri, dochie ọkara na obere viscosity cellulose na ọkara viscosity cellulose (75000-100000). (20000-40000) iji belata ego agbakwunyere.