Na akọrọ akọrọ, kpoo eat eling na-egwu arụ ọrụ nke njigide mmiri, ebe na-adọrọ adọrọ na thixotropy, ntinye aka na-abanye na Njirimara. Ikike njigide mmiri dị mma na-eme ka cent hydration na-eme ka ị zuo oke, nwere ike ime ka ike nke eriri mmiri, na ceramiiki tamic tile, ọ nwere ike ịbawanye oge mmeghe ma mezie oge mmeghe ma mezie oge mmeghe ma mezie oge mmeghe. Dinggbakwunye cellulose ether ka sprayical spring ọgwụ nwere ike ime ka ike nke akụrụngwa. Ọdịmma onwe onye nwere ike igbochi mmezi nwere ike igbochi mmezi, segregration na stratification, wdg ya mere na-ejikarị ya na nkụ ntụ ntụ dị ka ihe dị mkpa. Iji nye egwuregwu zuru ezu na ngwa mkpụrụ cellulose na ngwa agha akọrọ, ọ dịkwa mkpa iji họrọ ụdị mkpụrụ osisi e nwere ma chọpụta ụdị ya.
1. Njikọ mmiri nke celhaluse ether
①elite viscosity nke cellulose eather, ka mma iji njigide mmiri, na viscosity nke polymer ngwọta. Dabere na ogo molecular (ogo polymerization) nke polymer kpebisiri ike site na otu akwa nke usoro molecular na ụdị nke ndị nnọchi anya na ọtụtụ ndị hichaa ya.
Ogologo ego nke cellulose ether kwukwara na ngwa agha, ka mma mmiri nmechi, na elu viscosity, ka mma ka njigide mmiri.
N'ihe banyere urughuru, onye kachasị mma, mma njigide mmiri. Mgbe nnukwu mkpụrụ osisi cellulose nke cellulose nke cellulose na-abanye na mmiri, elu na-agbaze ozugbo ma na-akpụzi gel iji gbochie ihe ndị ahụ iji gbochie moleculation mmiri site na infultrating. 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.
2.
Ọrụ nke abụọ nke cellulose ether - na-adabere: ogo nke polymerization nke cellulose eather, ihe ngwọta, ọnụego ya, okpomọkụ 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. Maka MC na HPMC nke nwere viscosity viscosity, ihe ngwọta ịta ahụhụ, 5% nwere ike ịkwadebe maka viscosity Mc na HPMC, na HPMC, na HPMC, na-abụkarị usoro nhazi ọkwa nke sel sel na-emecha 1% -2% ngwọta. Nnukwu molecular ibu nke euthallose eut nwere arụmọrụ dị elu. N'ime otu ihe ngwọta, polymers nwere ihe dị iche iche dị iche iche nwere ụdị ọhụụ. 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 visciosity nke dị elu na-erute viscosity, yana mgbakwunye achọrọ dị obere, na visces na-adabere na arụmọrụ dị iche iche. 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. Glingta uche nke hpmc dị elu na ụlọ okpomọkụ.
Enwere ike ịgbanwe agbanwe agbanwe site na ịhọrọ nha nha na ịhọrọ ogo cellugul na ogo dị iche iche. Ndozi a na-akpọ bụ iwebata hydroxyalkyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyl nwere ọtụtụ ihe nnọchi ahụ na skeleton owuwu 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.
Ihe mgbakwunye nke cellose ether na-emetụta oriri mmiri nke ngwa agha nke ngwa agha nke ngwa agha nke ngwa agha ma gbanwee ohere mmiri na-agabiga, nke bụ mmetụta dị iche. The dị elu usoro ọgwụgwọ ahụ, oriri mmiri ka ukwuu.
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 colloidal, nke bụ onye na-adịghị mma ma ọ bụ ngwaahịa 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 nke poly-ụdị polymers na-enwekarị pseudoplastic na-abụghị thixotropic na-acha uhie uhie n'okpuru okpomọkụ ha, mana Njirimara Flowtonian na-adị ọnụ. 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, agbanyeghị MC, HPMC, ga-egosi 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 elu viscosity nke sel, ma dị elu mmiri dị elu, na nke kwekọrọ na-agbadata na njikwa ya na arụmọrụ ihe ọkụkụ. 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.
Oge post: Mar-14-2023