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
Mkpụrụ osisi ether bụ polymer na-eme site na sellilose site na ngbanwe 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 na-ejikarị ya, a ga-ekewa ya na mover ma gwakọta ya. Anyị na-eji Mc dị ka monoseise, na PMC dị ka agwakọta ether. Methyl cellulose eather mc bụ ngwaahịa mgbe hydroxy n'otu n'otu celluse nke sellose ke 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, PMC, wdc, wdc.
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 ihe. 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 Roke Rotovisko, Hopler, Ubellehde na Brookfield. Maka otu ngwaahịa ahụ, nsonaazụ vissityzọ vis dị iche iche dị iche iche, ụfọdụ nwere ndị nweburu ma ọlị. 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.
Banyere urughuru ogo, 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 mmiri nke cellulose eathe, na onye na-eso ụzọ 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, Mc na-agbasa n'etiti ihe ciment dị ka nchịkọta, mma ntụ ntụ zuru oke nwere ike zere methy cellulose mgbe agwakọta ya na mmiri. Mgbe agbakwunye Mc na mmiri iji gbazee agglomerates, o siri ike ịgbasa ma gbazee.
Esi nkenke nke MC abụghị naanị ihe na-efu 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 eme ihe, a na-etinye ngwa agha ntụ ntụ ntụ ntụ ntụ na-ekpo ọkụ na oke okpomọkụ (dị elu karịa ogo 40 na-agbatị plasta na centring ciment na ike nkụ. 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.
Oge Post: Mar-04-2023