Mkpụrụ osisi ether bụ polmer na-eji cellulose dị ka akụrụngwa kemịkal. Mkpụrụ osisi Ewet bụ ihe na-emepụta mkpụrụ osisi cellulose, cellymetic na-emepụta ihe dị iche, ihe kachasị mma ya bụ cellulose, ogige polmer. N'ihi ihe owuwu sellose eke, akwara n'onwe ya enweghị ike imeghachi omume na onye na-elekọta ya. Ma mgbe ọgwụgwọ nke onye na-ahụ maka ọzịza, a na-enwekarị agbụ hydrogen n'etiti eriri na agbụ, na celdronose Ether na-enwe mmeghachi omume na-emeghachi omume - ma ọ bụ ìgwè.
Ngwongwo nke otutu ndi mmadu na-adabere na udi, onu ogugu na nkesa ndi nweburu. Ọdịmma nke cellulose ether na-adabere na ụdị ndị nnọchi anya, ogo nke akwara, ngụgụ ngụgụ na ngwa nwere ike nkewa. Dabere na ụdị nke ndị a na-ejikarị ya, a ga-eke ya ke otu eet ma gwakọtara ya. A na-ejikarị mc dị ka otu e nwere otu e nwere, ebe Hpmc bụ ihe a gwakọtara ether. Methyl Cellulose Ether Mc bụ sellulose glucose nke metythyl nke metyoxide dochie, akụkụ ọzọ nke Methoxide nọchiri anya ngwaahịa, akụkụ nke hydroxyyl dị n'okpuru [C6h7o2 (oh) 3-mn (OCH3) m [OCH2)] x na hydroxyethyl nke na-eji ya na ere na n'ahịa.
Site na ngụgụ, enwere ike ekewa ụdị ụdị ionic na ụdị na-abụghị nke ionic. Ahịhịa mkpụrụ osisi na-abụghị nke ionic na-egbu egbu bụ nke a na-ejikarị Alkym ether na hydroxyl ether ether usoro abụọ nke iche. A na-ejikarị cmc nke ọma na ihe mgbochi sịntetik, akwa, ibi akwụkwọ, nri na nrigbu m. Nation MC, HPMC, HOMC na ndị ọzọ eji eji ihe eji eme ihe, mkpuchi nwa oge, ọgwụ, kemịkalụ kwa ụbọchị na akụkụ ndị ọzọ kwa ụbọchị na akụkụ ndị ọzọ. Dị ka onye na-ahụ maka ebe obibi, onye na-ejide mmiri, mmachi, dispents, ihe nkiri na-eme ka onye na-eme ihe nkiri.
Njide ikuku nke ikuku
N'ime mmepụta nke ụlọ, karịsịa mpe mpe mpe mpe mpe mpe mpe, nke mkpụrụ vaịn na-arụ ọrụ na-enweghị atụ, ọkachasị na ngwa agha nke ngwa agha (nke a gbanwetụrụ), bụ akụkụ dị mkpa), bụ akụkụ dị mkpa.
Ọrụ dị mkpa nke mmiri-soluble cellulose ether na-enwe akụkụ atọ, otu bụ ikike njigide, nke abụọ bụ mmetụta nke ọgwụ mgbochi na nke atọ bụ mmekọrịta ya na ciment.
Njide mmiri nke eather, dabere na ntọala nke hydroscopity, nke ngwakọta nke ngwa agha, ngwa agha oyi akwa, mịrịgba mmiri chọrọ. Njikwa mmiri nke celhulose easter na-esite na solubality na akpịrị ịkpọasị nke sel. A maara nke ọma na eriri akwara mkpụrụ osisi cellular, ọ bụ ezie na ha nwere ọnụọgụ dị ukwuu nke otu hydrated dị ukwuu, na-enweghị isi na mmiri n'ihi ihe ha ji kristal. Ike hydration nke otu hydroxy ezughi iji kwụọ ụgwọ maka njikọ hydrogen na Van Der Waals ike. Mgbe a ga-ewebata ndị nọchiri anya ya n'ime molecular yinye, ọ bụghị naanị ndị ejikọtara ọnụ na-emebi obi hydrogen, kamakwa njikọta Hydrogen Hydrogen na-agbaji n'ihi ihe ndị a na-edebe ihe dị n'etiti agbụ. Karị ndị nọchiri anya ndị ahụ bụ ihe dị anya n'etiti Molecules bụ. Nbibi a nke hydrogen Mmetụta nke Njikọ nke Njikọ, ihe ngwọta na-agbasa nke sel ehet na-agbanye mmiri, soluble, guzobe nke ngwọta ọhụụ. Ka ọnọdụ okpomọkụ na-acha, hydration nke polymer mbelata na mmiri dị n'etiti a na-achụpụ mmiri n'etiti agbụ. Mgbe mmetụta akpịrị na-ahụ zuru ezu, ụmụ irighiri akwara na-amalite nchịkọta na gel a na-agbada na netwọkụ ụzọ atọ. Ihe ndị metụtara mmiri na-emetụta mmiri nke a na-agụnye viocosiotvase ihe ngosi, usoro, na ụdị urughume na ọnọdụ ọrụ.
Ihe dị ukwuu viscy sel sel, ka mma ijigide mmiri na-arụ ọrụ, viscosity nke polymer ngwọta. Atutuolular ibu (ogo polymerization) nke polymer kpebisiri ike n'ogologo na morphology owuwu nke yinye, na ikesa ọnụ ọgụgụ nke ọnụ ọgụgụ dị iche iche na-emetụta oke viscositser. [eta] = km alfa
Version viensic nke nke polymer ngwọta
Mymer mololular
α polymer agwa
Ọdịdị viccosite
Voluter nke polymer ngwọta dabere na oke molecular nke polymen. Nleta ọhụụ na ịta nke sellulose ngwọta na-emetụta ngwa dị iche iche. Ya mere, onye ọ bụla na-akụ mkpụrụ osisi na-akọwapụta ọtụtụ viscositions dị iche iche, usoro vistos bụ site na nrụrụ nke alkali cellulose, ya bụ ihe na-acha nke akwara mkpụrụ osisi cellular iji mezuo.
N'ihi na urughuru nha, nke kachasị mma, mma njigide mmiri. Nnukwu ururu nke cellulose na-akpọtụrụ mmiri, gbazee ma na-etolite gel iji kechie ihe ahụ iji gbochie modeculas mmiri site na ịbawanye ngwọta ma ọ bụ agglomerate. A ga-enye ngbanye Ewer sel bụ otu n'ime ihe ịhọrọ ether ether.
Ndị na-eto eto na thixotropy nke cellulose ether
Mmetụta nke abụọ nke cellose eather - isi na-adabere: celligul polymerization polymerization polymerization, ntinye uche, oké okpomọkụ na ọnọdụ ndị ọzọ. Ihe ngwọta nke ihe ngwọta bụ ihe pụrụ iche na alkyl Cellulose na mgbanwe ya agbanweela. Njirimara GELAPS metụtara ogo nke ihe nnọchi, itinye uche na mgbakwunye. N'ihi na hydroxy alkyl alkyl na-agbanwe agbanwe, akụrụngwa gel na ogo mgbanwe nhọrọ hydyl alkyl alkyl. Maka ngwọta ngwọta nke obere viscosity Mc na HPMC kwadebere 10% -15% ịgwọ ọrịa na HPMC nwere ike ịkwadebe 7% -1% ngwọta, ọ na-abụkarị ngwọta nke cellulose nke 1% -2% ngwọta. Enwere ike igosipụta ụdị molecular elu nke ọma, otu polymers dị iche iche nwere ọdịiche dị iche iche, [ηn) 0.905, DPN bụ ogo ogo polymerization. Ibu akwara dị ala na-ete elu na-agbakwunyekwu iji nweta viscosity. Ngapụta ya na-adabere na ọnụego ya, dị elu iji mezuo viscosity, ego achọrọ iji gbakwunye obere, viacosity arụ ọrụ. Ya mere, iji mezuo otu ihe, ego nke cellulose (ịta ihe ngwọta) na ngwọta viscosity ga-ekwerịrị. Ọnọdụ ndụ nke ihe ngwọta nke ihe ngwọta ahụ gbanyere mkpọrọgwụ na mmụba nke ịta nke ihe ngwọta, na gelenation mere na ụlọ okpomọkụ mgbe ị ga-enwe ụfọdụ itinye uche. HPMC nwere ihe na-adọrọ adọrọ dị elu na ụlọ okpomọkụ.
Enwere ike idozigharị agbanwe agbanwe site na ịhọrọ nha nha na-elo elu na ogo dị iche iche. Ndozi a na - akpọ mgbanwe bụ iwebata hydyl alkyl na ogo nke dochie anya na akara ọkpụkpụ nke MC. Site na ịgbanwe ụkpụrụ nke ihe abụọ, nke ahụ bụ, nke ahụ bụ, DS na MS onye ikwu nbanye dị iche iche nke methoxy na otu Hydroxy. Ngwongwo dị iche iche nke cellose ether site na ịgbanwe ụkpụrụ iwu nke ụdị abụọ dị iche iche.
Mmekọrịta dị n'etiti agbanwe agbanwe na mgbanwe. Na eserese nke 5, mgbakwunye nke cellose ether na-emetụta mmiri mmiri nke ngwa agha ma gbanwee mmiri mmiri na ciment, nke bụ mmetụta ndị na-atọ ụtọ. The dị elu usoro ọgwụgwọ, oriri mmiri ọzọ.
Ahygbọ mkpụrụ osisi cellugul ejiri mee ihe na-ewu mmiri ga-agbasa ọsọ ọsọ na mmiri oyi ma nye usoro ya na ikike nri. Ọ bụrụ na onyinye a na-ere ere ka na-achagharị na colloidal ọ bụ onye na-adịghị mma ma ọ bụ ngwaahịa adịghị mma.
Enwekwara mmekọrịta dị mma n'etiti ciment slurry na-agbanwe agbanwe na usoro nke cellulose ewer, cellulose ether nwere ike ịbawanye vish os, nke ka ukwuu na nsonaazụ ya.
Ihe ngwọta Ether dị elu nke celdity nwere nnukwu vixtotropy, nke bụ otu n'ime njirimara nke cellulose ether. Ọkpụkpụ osisi nke polymers Mc na-enwekarị pseudoplocastic, ndị na-abụghị thixotropic n'okpuru okpomọkụ ha, mana Njirimara Flowtonian na-adị ọnụ. Pseudoplastity na-abawanye na mmụba nke oke molecular ma ọ bụ ịta ahụhụ cellulose ether ma nwee onwe ya na ụdị na ogo rụrụ arụ. Ya mere, usoro cellulose nke otu viscosit, ma MC, HPMC ma ọ bụ HOMC, na-egosi otu akụrụngwa na-egosi na ịta ya ogologo oge na ọnọdụ okpomọkụ na-adịgide. Mgbe ọnọdụ okpomọkụ na-abawanye, a na-emepụta ụlọ ọrụ na-asọpụta na elu Thixtotropic na-aga. Ethshers cellugul nwere nnukwu ịta na obere victoser na-egosi Thixitropy ọbụna n'okpuru okpomọkụ gel. Ihe onwunwe a bara uru dị ukwuu maka owuwu nke ụlọ a na-eme ka ụlọ a na-emegharị ya ma dozie ihe owuwu. Ọ dị mkpa ịkọwa ya ebe a na elu viscosity nke sel, ma dị elu na viscosity ogo nke sel, nke nwere mmetụta na-adịghị mma na ngwa agha na arụmọrụ. Nke dị elu viscosity, ihe doro anya karị na-enwekarị mmerụ ahụ nke ngwa agha, mana ọ bụghị mmekọrịta zuru oke. Somefọdụ viscosity dị ala, ma gbanwee cellilose ether na-eme ka ike nke ngwa agha nke ngwa agha nke ngwa agha nwere ezigbo arụmọrụ, yana mmụba nke viscosity, ebe a na-ahụ maka ebe a na-ahụ maka viscosis, na-enwe mmụba nke ikuku.
Oge post: Mar-30-2022