Na mgbakwunye-gwakọtara ike, mgbakwunye ego nke cellulose ether dị ala, mana ọ nwere ike ime ka arụmọrụ nke ngwa agha mmiri, ọ bụ isi ihe na-emetụta arụmọrụ nke ngwa agha. Ezi uche nke usoro cellugul nke ụdị dị iche iche, ụdị ọhụụ, ogo dị iche iche, ogo dị iche iche ga-enwe mmetụta dị mma na arụmọrụ nke ngwa agha akọrọ. Ugbu a, ọtụtụ masonry na ngwa ngwa na-agba ngwa ngwa nwere arụmọrụ mmiri mmiri, na mmiri slurry ga-ekewapụ mgbe ọ gafechara. Njikwa mmiri bụ arụmọrụ dị mkpa nke methyl cellulose eather, ọ bụkwa arụmọrụ nke ndị na-emepụta ngwa ngwa na ndịda na ndịda na ndịda na-adị elu, toa ntị na mbara igwe. Ihe ndị na-emetụta mmetụta mmiri nke ngwakọta akọrọ gụnyere ego nke Mc gbakwunyere, viecosis nke MC, ọdịdị nke irighiri ihe na ọnọdụ okpomọkụ nke ojiji.
1. Echiche
Cellugul etherbụ polymer sịntetik mere site na sellulose site na mgbanwe kemịkal. Celligul eather bụ ihe na-atọ ụtọ nke sellose. Mmepụta nke cellosuse eather dị iche na polymers sịntetik. Ihe kachasị mkpa bụ cellulose, polymer polymer. N'ihi ihe owuwu sellose eke, ihe cellulose n'onwe ya enweghị ikike imeghachi omume ndị ọrụ Ileration. Agbanyeghị, mgbe ọgwụgwọ nke onye na-ahụ maka ọzịza, a na-ejikọ hydrogen n'etiti ụdọ mmiri na agbụ nke hydroxyl na-emegharị alkali sellulose. Nweta celllose ether.
Ngwongwo nke otutu ndi mmadu na-adabere na udi, onu ogugu na nkesa ndi nweburu. Nkewa nke eyers cellususe na-esitekwa n'ụdị ndị nnọchianya, ogo nke ether, ngụgụ na akụrụngwa metụtara ya. Dabere na ụdị nke ndị a machibidoro na akwara mmiri, enwere ike ekewa ya na mono-eat na agwakọta. MC anyị na-ejikarị bụ mono-eat, na HPMC a na-agwakọta. Methyl cellulose eather mc bụ ngwaahịa mgbe hydroxy n'otu n'otu celluse nke celloxy. Ọ bụ ngwaahịa na-enweta site n'iji otu akụkụ nke otu hydroxyl na ngalaba nwere methoxy otu na akụkụ ọzọ na otu hydroxyl. Usoro nhazi ahụ bụ [c6h7o2 (oh) 3-mn (oh) n] na-ejikarị ụdị ya ma ree n'ahịa.
N'usoro nke solubality, enwere ike ekewa ya ionic na nke na-abụghị nke ionic. Ahịhịa mkpụrụ ndụ celluble na-abụghị nke na-egbu egbu na-kachakarị nke usoro usoro abụọ nke alkyl na hydroxyalky. A na-eji cmc cmc na-eme ihe na-egbu egbu, mbipụta na ihicha akwa, nri na ihe nyocha mmanụ. A na-ejikarị mc, HPMC, wdc, wdg.
2. Njikọ mmiri nke celhaluse ether
Nchọpụta mmiri nke eat nke eather: Na mmepụta ihe eji eme ihe, ọkachasị nkụchi ntụ ntụ, celhulose elictive na-enweghị atụ, karịsịa na ngwa agha pụrụ iche (nke dị mkpa), ọ bụ ihe dị mkpa.
Ọrụ dị mkpa nke mmiri-soluble cellulose ether na-enwe akụkụ atọ, otu bụ ikike nnabata, nke ọzọ bụ mmetụta na-agbanwe agbanwe, na nke atọ bụ mmekọrịta ya na ciment. Igwe eji egbochi mmiri nke sel na-adabere na mmiri mmiri dị na mbara ihu, ihe ngwa agha, ọkpụrụkpụ nke ngwa agha, na oge nrụpụta nke ihe eji eme ya. Njide mmiri nke celhulose ether n'onwe ya na-esite na solubality na akpịrị ịkpọasị nke sel na-efe efe. Dịka anyị niile maara, ọ bụ ezie na mkpụrụ ndụ cellular nwere ọnụ ọgụgụ dị ukwuu nke ukwuu, ọ naghị soble na mmiri, n'ihi na ihe owuwu cellulose nwere oke nke mkpu ákwá dị elu.
Ikike hydration nke otu hydroxy ezughi iji kpuchie eriri hydrogen siri ike na van der Waals na-agabiga n'etiti ụmụ irighiri ihe. Ya mere, ọ bụ naanị inyocha ma ọ naghị agbari na mmiri. Mgbe a na-ewebata dochie ya n'ime akwara akwara, ọ bụghị naanị na a na-ebibi hydrogen yinye, kamakwa njikọta hydrogen hydrogen a na-emebi emebi n'ihi akara nke a na-ejikọ ọnụ. Nnukwu ihe dị ukwuu n'etiti ụmụ irighiri akwara. Ka ukwuu n'ebe dị anya. Kachasị mmetụta nke imebi agbụ hydrogen, cellulose ether na-agbanye mmiri mgbe ikuku lattice latttose na-agbasa ma ngwọta ndị na-abanye, na-akpụzi ngwọta dị elu. Mgbe ọnọdụ okpomọkụ ahụ na-awa, hydration nke polymer na-emebi emebi, na mmiri dị n'agbatakwa mmiri dị n'etiti agbụ. Mgbe mmetụta akpịrị zuru ezu, ụmụ irighiri akwara na-amalite nchịkọta, na-akpụzi gel nke netwọkụ atọ ma kechie ya.
Ihe ndị na-emetụta oke mmiri nke ngwa agha gụnyere viscosis nke sel, ego ahụ gbakwụnyere, ọnụ ọgụgụ nke irimma na iji okpomọkụ.
Ihe omuma nke puru iche nke cellulose Ether, ka mma uzo nmekorita nke mmiri. Vissiosis bu oke ihe di nkpa banyere oru MC. Ugbu a, ndị na-emepụta MC dị iche iche na-eji ụzọ dị iche iche na ngwa iji tụọ viscosity nke MC. Uzo isi bu Rotovisko, Hopler, Ubellehde na Brookfield, wdg. Ya mere, mgbe a tụnyere viscosity, a ga-eme ya n'etiti otu ule ahụ, gụnyere okpomọkụ, rotor, wdg.
N'ikwu na-ekwu, viscosity dị elu, ka mma idogide mmiri. Agbanyeghị, viscosity na elu molecular arọ nke MC, onye kwekọrọ na ya ga-enwe mmetụta na-adịghị mma na ike na owuwu nke ngwa agha. The dị elu viscosity, na-apụtawanye ìhè na nsonaazụ na-arụpụta na ngwa agha, mana ọ bụghị ozugbo. Na viscosity dị elu, ndị na-ahụ mmiri mmiri ga-adị, nke ahụ bụ, n'oge owuwu, ọ na-egosiputa ya ka ịrapara na mpe mpe mpe na mkpụrụ. Mana ọ baghị uru iwelie ike mgbochi mmiri nke mmiri ahụ n'onwe ya. N'oge a na-ewu ihe, arụmọrụ mgbochi Sag apụtaghị. Kama nke ahụ, ụfọdụ ndị na-ajụ oyi ma dị ala ma na-agbanwe usoro Methyl Cellulose nwere arụmọrụ dị mma iji melite ike mgbanyụ mmiri.
Ogologo ego nke cellulose ether kwukwara na ngwa agha ahụ, ka mma mmiri iji njigide mmiri, na elu viscosity, ka mma ịrụ ọrụ njigide mmiri.
N'ihi na urughuru nha, nke kachasị mma, mma njigide mmiri. Mgbe nnukwu mkpụrụ osisi cellulose nke cellulose etler batara na mmiri, elu na-agbaze ozugbo ma na-akpụzi gel iji gbochie moducus mmiri site na ịnọgide na-aga n'ihu na infilt. Mgbe ụfọdụ, ọ na-enweghị ike ịgbasa ma gbasaa ma belata ogologo oge, na-akpụzi ihe ngwọta igwe ojii ma ọ bụ agglomeration. Ọ na - emetụta oke njigide nke other ya, na sosoubles bụ otu n'ime ihe maka ịhọrọ ether.
Nmapụta bụkwa ihe dị mkpa arụmọrụ arụmọrụ nke methyl cellulose ether. A chọrọ MC eji maka ngwa agha akọrọ ka ọ bụrụ ntụ ntụ, na obere mmiri dị ala, na suple na-achọ 20% ~ 60% nke urughuru na-erughị 63UM. Faneness na-emetụta solubality nke methyl cellulose ether. Nke a na -adịsi ike mc na-abụkarị n 'mmiri na-enweghị agglomeration, mana ọnụ ọgụgụ na-adịghị ada ada, yabụ na ọ dịghị mma maka iji ntụ ntụ ntụ. Na akọrọ ntụ ntụ ntụ, Mc na-agbasa n'etiti nchịkọta, ezi fillers na ciment na ciment. Naanị ezigbo ntụ ntụ zuru ezu nwere ike ịhapụ Methy cellulose ether agglomeration mgbe ị na-agwakọta ya na mmiri. Mgbe agbakwunye Mc na mmiri iji gbazee agglomerates, o siri ike ịgbasa ma gbazee.
Mkpụrụ osisi mc abụghị naanị n'efu, kamakwa na-ebelata ike mpaghara nke ngwa agha. Mgbe etinyere ụdị ngwa agha akọrọ na nnukwu mpaghara, ọsọ ọsọ nke ngwa agha akọrọ na-ebelata, na cracks ga-apụta n'ihi usoro ọgwụgwọ dị iche iche. Maka ngwa agha awara awara ya na arụ ọrụ, ihe achọrọ maka ịdị ọcha dị elu dị elu n'ihi oge ịzụrụ nri.
Ọdịmma nke MC nwekwara ụfọdụ mmetụta na njigide mmiri ya. N'ikwu na-ekwu, maka ndị na-eme ebere methy na otu viscosity mana ịdị mma dị iche iche, n'okpuru otu mgbakwunye, ọ kachasị mma na nsonaazụ nguzosi ike.
Njikọ mmiri nke MC na-emetụtakwa na ọnọdụ okpomọkụ eji, na njigide mmiri nke methyl celluluse ether na-agbadata na mmụba nke okpomọkụ. Agbanyeghị, na ngwa eji eme ihe, a na-etinye ngwa ngwa ntụ ntụ mmiri na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ (dị elu ma dị elu ma na-agbatị plasta na centration nke Akọrọ ntụ ntụ. Ndapụ nke ọnụego mmiri nke ọnụego doro anya na-eduga na mmetụta doro anya na mgbakwunye ma na-emetụta nrụgide na-adịwanye njọ belata mmetụta nke ọnọdụ okpomọkụ n'okpuru ọnọdụ a.
Ọ bụ ezie na a na-ahụta ihe ndị na-eme ka emepụta ihe dị ugbu a na-ebute ụzọ maka mmepe teknụzụ, dabere na ọnọdụ okpomọkụ ha ka na-eduga na-emebi arụmọrụ nke ngwa ngwa akọrọ. Ọ bụ ezie na ego Methylyythyythythythythyth Cellulose na-amụba (usoro ọkọchị), ọrụ na ndagide na-eguzogide enweghị ike ijigide mkpa nke iji. Site na ụfọdụ ọgwụgwọ pụrụ iche na MC, dị ka ịbawanye ogo ogo, wdg, enwere ike ịnọgide na-emegide njigide mmiri na elu okpomọkụ, ka ọ nwee ike ịnye arụmọrụ ka mma n'okpuru ọnọdụ ike.
3.
Ndị na-eto eto na thixtopy nke cellulose eather: Ọrụ nke abụọ nke mmetụta nke mkpụrụ osisi na-adabere: ogo polymeranzation nke cellulose eart, ngwọta na ọnọdụ ndị ọzọ. Ihe onwunwe nke ihe ngwọta nke ihe ngwọta bụ pụrụ iche na alkyl Cellulose na agbanwee. Njirimara gelenation bu ihe metụtara ogo nke nbanye, itinye uche na ihe mgbakwunye. N'ihi na hydroxyalkyl na-eme ka usoro nke GErivatives, yana akụrụngwa GEN na ogo mgbanwe nke hydroxyalli. Enwere ike ịkwadebe ngwọta 10% na HPMC, 5% -10% Ngwọta Mc na HPMC, na 2% -3% nwere ike ịkwadebe maka viscosity Mc na HPMC. Ọtụtụ mgbe, nhazi viscosict nke sel sel na-agụcha ya site na 1% -2% ngwọta.
Olugular-ara na-egbu egbu nwere arụmọrụ dị elu. Polymers nwere ihe dị iche iche enwere oke nwere viscosities dị iche iche na otu ihe ngwọta. Ogo dị elu. Enwere ike nweta ihe a lekwasịrị anya site na ịgbakwunye nnukwu molecular nke dị ala. Visatyhụ ya enweghị obere ịdabere na ọnụego ya, na ụdị vis a na-ahụ anya viscosity, chọrọ mgbakwunye na viscosity arụmọrụ. Ya mere, iji mezuo ụfọdụ mkpụrụ osisi, ụfọdụ mkpụrụ osisi cellulose (ịta nke ihe ngwọta) na usoro viscosity ga-ekwerịrị. The gel nke ngwọta nke ihe ngwọta na-ebelata ihe ngwọta na mmụba nke ngwọta nke ihe ngwọta, na gels na ụlọ okpomọkụ mgbe ị rutere ụfọdụ itinye uche. Glellings ịta nke Hpmc dị elu na ụlọ okpomọkụ.
Enwere ike idozigharị ya site na ịhọrọ nha nha ma na-ahọrọ ndị a na-enwe usoro mgbanwe cellose na ogo dị iche iche. Ndozi a na-akpọ bụ iwebata ogo ụfọdụ nke ihe nnọchianya Hydroxyallth na otu ọkpụkpụ nke MC. Site na ịgbanwe ụkpụrụ nke ihe abụọ ahụ, ya bụ, nke ahụ bụ, DS na MS nke dị iche iche banyere Methoxy na Hydroxyalky dị na-ekwu. Enwere ike ịnweta usoro arụmọrụ dị iche iche nke mkpụrụ osisi cellulose site na ịgbanwe ụkpụrụ nbanye nke ndị nwe ya.
Mmekọrịta dị n'etiti agbanwe agbanwe na mgbanwe: Mgbakwunye nke cellose e nwere nkụda mmụọ nke ngwa agha, na-agbanwe mmiri mmiri na ciment bụ mmetụta ndị dị elu, oke oriri.
Agbụrụ mkpụrụ osisi cellugul ejiri na mmiri ụlọ ga-agbaze ngwa ngwa ma nyekwa ntụkwasị obi kwesịrị ekwesị maka sistemụ ahụ. Ọ bụrụ na enyere ụfọdụ ihe eji eme mmiri, ọ ka na-aghọ ihe mgbochi na mgbochi colloidal, nke bụ oke ngwaahịa ma ọ bụ ngwaahịa na-adịghị mma.
Enwekwara mmekọrịta dị mma n'etiti nha anya nke cent mado na usoro nke cellulose ether. Mkpụrụ ndụ mkpụrụ osisi e nwere ike ịba ụba vishosity nke ngwa agha. Karịa usoro onunu ogwu, ihe doro anya na mmetụta pụtara ìhè. Nnwale ọdịdị nke ọdịiche dị elu nke dị elu na-esiri ike nwere nnukwu Thixtotropy, nke bụkwa isi agwa nke sel. Ihe ngwọta osisi nke polymers MC na-enwekarị pseudoplastic na-abụghị thixotropic na-enweghị mmiri n'okpuru okpomọkụ ha, mana Njirimara Flowtonian na-adị ala. Pseudoplastity na-abawanye na oke molecular ma ọ bụ ịta ahụhụ cellulose ether, n'agbanyeghị ụdị rụrụ arụ na ogo nke dochie. Ya mere, usoro cellulose nke otu viscosit, n'agbanyeghị MC, HPMC, HAMC, ga-egosipụta otu ihe ndị na-egbu egbu ihe dị ka ogologo ịta na ọnọdụ okpomọkụ na-echekwa.
A na-guzobe gels mgbe a zụlitere okpomoku, ma buru oke ibu na-eme. Elu elu na-egosi ndị na-ahụ maka viocosity na-egosi ThoxOtropy ọbụna n'okpuru okpomọkụ gel. Ihe onwunwe a dị oke uru maka ndozi nke ịka nká na ịka nká nke ụlọ ngwa agha. Ọ dị mkpa ịkọwa ya ebe a na ụdị viscosis nke sel, ma dị elu na viscosity arọ, na ibe ahụ na-agbada na-agbada n'ike ya, nke nwere mmetụta na-adịghị mma na itinye aka na ntinye aka na oru oru. Nga ahụ dị elu, ihe doro anya na nsonaazụ ndị na-emetụ na ngwa agha, mana ọ bụghị kpam kpam. Fọdụ ndị na-ajụ ase na ala dị ala, mana mgbanwe ahụ gbanwetụrụ na-arụ ọrụ ka mma iji melite ike nke ngwa agha. Site na mmụba nke viscosity, njigide mmiri nke cellulose na-eme ka ọ dị mma.
4
Nlọghachi nke cellulose eather: Ọrụ nke atọ nke cellulose ether bụ igbu oge hydration usoro ciment. Mkpụrụ osisi ether kwekọrọ na ihe ndị bara uru na akụrụngwa bara uru, ma na-ebelata akụkụ mbụ hydration hydration nke ciment ma na-egbu oge hydration usoro nke ciment. Nke a bụ ihe na-adịghị mma maka iji ya na ngwa agha na mpaghara oyi. A na-eme ihe nlegharị anya a site na mgbasa ozi nke cellulose evet molecules na ngwaahịa hydration dị ka Csh na CA (Oh) 2. N'ihi mmụba nke viscosity nke poret a na-edozi, cellulose e jilata ngagharị nke eons na ngwọta, si otú ahụ na-egbu oge hydration usoro.
Nke elu nke cellose eather na ihe gel, nke a na-akpọkarị mmetụta nke hydration oge. Ọ bụghị naanị n 'oge na-egbu oge, mana na-egbu oge ike nke usoro ngwa agha ciment. Mmetụta na-akwụ ụgwọ nke cellulose ether dabere ọ bụghị naanị na ntinye ya na sistemụ gel, kamakwa na usoro kemịkal. Nke dị elu ogo nke methylation nke hemsc, ka mma na-ekwupụta mmetụta nke celluse ether. Akwa nke nnweta hydrophilic na-abawanye uru na-azụ ahịa siri ike. Agbanyeghị, viscosity nke cellose ether enweghị mmetụta na-enweghị mmetụta na hydrary Kinetics.
Site na mmụba nke mkpụrụ ndụ na-ehulata, oge ịgba agha na-abawanye nke ukwuu. Enwere ezigbo mmekorita nke na-abụghị nke a na-anaghị akwụ ụgwọ oge mgbanyụ nke ngwa agha na ọdịnaya nke cellulose ether, na ezigbo nchịkọta n'etiti oge ntọzi na ọdịnaya nke cellulose ether. Anyị nwere ike ijikwa oge arụmọrụ nke ihe ọkụkụ site na ịgbanwe ego nke cellulose ether.
Chịkọtara, na ngwa agha,cellugul etherna-ekere ọrụ na njigide mmiri, ebe na-egbu egbu, na-egbu oge ciment hydration ike, ma na-eme ka arụmọrụ owuwu. Ikike nnabata mmiri dị mma na-eme ka ciment hydration zuru oke, nwere ike ime ka viscosity mgbochi mmiri nke ngwa agha, na-abawanye ike nke ngwa agha, ma na-eme ka oge na-emepụta ngwa agha, na-eme ka oge a na-eme nke ọma. Dinggbakwunye celllose ether na-eme ka ịpị ngwa agha nwere ike ime ka spraying ma ọ bụ gbanye ọrụ na ike nhazi nke ngwa agha. Ya mere, a na-eji Ewer na-ejikarị ya dị ka ihe dị mkpa na ngwa ngwa.
Oge Post: APR-28-2024