Ụzọ maka Mkpebi Ike Gel nke Cellulose Ether

Iji tụọ ike nkecellulose ether gel, isiokwu na-ewebata na ọ bụ ezie na cellulose ether gel na jelii-dị ka profaịlụ na-ahụ maka njikwa nwere usoro gelation dị iche iche, ha nwere ike iji ihe yiri ya na ọdịdị ya, ya bụ, ha enweghị ike ịgbasa mgbe gelation gasịrị Na steeti siri ike, usoro nlele a na-ejikarị eme ihe. A na-eji usoro ntụgharị na usoro ntụgharị oghere maka ịlele ike nke jelii iji nyochaa ike nke cellulose ether gel, a na-agbakwunyekwa usoro nhụsianya ọhụrụ dị mma. A na-enyocha ntinye nke ụzọ anọ ndị a iji chọpụta ike cellulose ether gel site na nyocha. Nsonaazụ na-egosi na usoro nleba anya nwere ike iji qualitatively nyochaa ike nke cellulose ether, usoro ntụgharị adịghị mma maka ịlele ike nke cellulose ether, usoro oghere nwere ike nyochaa ike nke cellulose ether na ike dị n'okpuru 0.1 MPa, na Nrụgide dị mma agbakwunyere ọhụrụ Usoro a nwere ike nyochaa ike nke cellulose ether gel nke ukwuu.

Isi okwu: jelii; cellulose ether gel; ike; usoro

0.Okwu mmalite

Ndị na-ahụ maka njikwa profaịlụ nke dabere na polymer jelii na-ejikarị na nkwụnye mmiri mmanụ na njikwa profaịlụ. Otú ọ dị, n'ime afọ ndị na-adịbeghị anya, ọnọdụ okpomọkụ na-emetụ n'ahụ na nke na-ekpo ọkụ gel cellulose ether plugging na njikwa usoro ejiri nwayọọ nwayọọ ghọọ ebe nyocha maka nkwụnye mmiri na njikwa profaịlụ na nnukwu mmanụ mmanụ. . Ike gel nke cellulose ether bụ otu n'ime ihe ngosi kachasị mkpa maka ịmepụta nkwụnye, ma ọ dịghị ọkọlọtọ otu maka usoro ule ike ya. Ụzọ ndị a na-ejikarị enyocha ike jelii, dị ka usoro nleba anya - usoro ziri ezi na nke akụ na ụba maka ịnwale ike jelii, jiri tebụl ike jelii mee mkpebi ikpe ọkwa nke ike gel ga-atụle; usoro ntụgharị - ngwa ndị a na-ejikarị bụ Brookfield viscometer na rheometer, okpomọkụ nke ihe nlele ule Brookfield viscometer dị n'ime 90.°C; usoro oghere oghere - mgbe a na-eji ikuku na-agbaji site na gel, ọgụgụ kachasị elu nke nlele nrụgide na-anọchi anya ike nke gel. Usoro gelling nke jelii bụ ịgbakwunye onye na-ejikọta ya na ngwọta polymer. A na-ejikọta onye na-ahụ maka cross-linking na polymer yinye site na njikọ kemịkalụ iji mepụta usoro netwọk gbasara ohere, na usoro mmiri mmiri na-agbanye n'ime ya, nke mere na usoro dum na-efunahụ mmiri, wee gbanwee N'ihi na jelii, usoro a agaghị agbanwe agbanwe na bụ mgbanwe kemịkalụ. Usoro gel nke cellulose ether bụ na na obere okpomọkụ, macromolecules nke cellulose ether na-agba ya gburugburu site na obere mmiri mmiri site na njikọ hydrogen iji mepụta ngwọta mmiri. Ka okpomọkụ nke ngwọta na-ebili, a na-ebibi njikọ hydrogen, na nnukwu mkpụrụ ndụ cellulose ether Ọnọdụ nke ụmụ irighiri ihe na-ejikọta ọnụ site na mmekọrịta nke ìgwè hydrophobic na-emepụta gel bụ mgbanwe anụ ahụ. Ọ bụ ezie na usoro gelation nke abụọ dị iche iche, ọdịdị ahụ nwere ọnọdụ yiri ya, ya bụ, a na-emepụta ọnọdụ nke ọkara siri ike na-adịghị agafe agafe na oghere atọ. Ma usoro nyocha nke ike jelii dabara adaba maka ịlele ike nke cellulose ether gel chọrọ nyocha na nyocha nnwale. N'akwụkwọ a, a na-eji ụzọ omenala atọ iji nyochaa ike nke cellulose ether gels: usoro nlele, usoro ntụgharị na usoro nkwụsịtụ na-emepe emepe, na usoro nrụgide dị mma na-etolite na ndabere a.

1. Akụkụ nnwale

1.1 Ngwa na ngwa nnwale bụ isi

Igwe mmiri ọkụ eletrik mgbe niile, DZKW-S-6, Beijing Yongguangming Medical Instrument Co., Ltd .; okpomọkụ dị elu na rheometer dị elu, MARS-III, Germany HAAKE ụlọ ọrụ; na-ekesa mmiri multi-nzube agụụ mgbapụta, SHB-III, Gongyi Red Instrument Equipment Co., Ltd .; ihe mmetụta, DP1701-EL1D1G, Baoji Best Control Technology Co., Ltd .; usoro inweta nrụgide, Shandong Zhongshi Dashiyi Technology Co., Ltd .; tube colorimetric, 100 ml, Tianjin Tianke Glass Instrument Manufacturing Co., Ltd .; karama iko na-eguzogide okpomọkụ dị elu, 120 ml, Schott Glass Works, Germany; nitrogen dị elu, Tianjin Gaochuang Baolan Gas Co., Ltd.

1.2 Nlele nnwale na nkwadebe

Hydroxypropyl methylcellulose ether, 60RT400, Taian Ruitai Cellulose Co., Ltd.; igbari 2g, 3g na 4g hydroxypropylmethylcellulose ether na 50 ml mmiri ọkụ na 80.℃, kpalie nke ọma ma tinye 25℃nke 50 mL mmiri oyi, a gbazere ihe nlele ahụ kpamkpam iji mepụta ngwọta ether cellulose na ntinye nke 0.02g / ml, 0.03g / ml na 0.04g / mL n'otu n'otu.

1.3 Usoro nnwale nke cellulose ether gel test ike

(1) Ejiri usoro nlele nwalere. Ikike nke karama iko iko na-ekpo ọkụ na-ekpo ọkụ dị obosara nke a na-eji na nnwale bụ 120ml, na olu nke cellulose ether ngwọta bụ 50ml. Tinye ihe ngwọta cellulose ether a kwadebere na ntinye nke 0.02g / ml, 0.03g / ml na 0.04g / ml na karama iko na-eguzogide okpomọkụ, tụgharịa ya na okpomọkụ dị iche iche, ma tụnyere ihe atọ dị n'elu dị iche iche dị ka koodu ike gel si dị. A nwalere ike gelling nke cellulose ether aqueous solution.

(2) A nwalere site na usoro ntụgharị. Ngwá ọrụ nnwale a na-eji na nnwale a bụ rheometer dị elu na nrụgide dị elu. A na-ahọrọ ihe ngwọta cellulose ether aqueous nke nwere ntinye nke 2% ma tinye ya na drum maka ule. Ọnụego kpo oku bụ 5℃/ 10 min, ọnụ ọgụgụ shear bụ 50 s-1, na oge ule bụ 1 min. , The kpo oku nso bụ 40～110℃.

(3) A nwalere ya site na usoro mmeghe oghere. Jikọọ tubes colorimetric nwere gel, gbanye mgbapụta agụụ, ma gụọ ọgụgụ kachasị elu nke nlele nrụgide mgbe ikuku na-agbaji site na gel. A na-arụ ọrụ nlele ọ bụla ugboro atọ iji nweta nkezi uru.

(4) Nyochaa site na usoro nrụgide dị mma. Dị ka ụkpụrụ nke usoro ọganihu vacuum degree si dị, anyị emeela ka usoro nnwale a dịkwuo mma ma nakwere usoro nke nrịbama dị mma. Jikọọ tubes colorimetric nwere gel, ma jiri usoro nnweta nrụgide iji nwalee ike nke cellulose ether gel. Ọnụ ọgụgụ nke gel a na-eji na nnwale ahụ bụ 50mL, ikike nke tube colorimetric bụ 100ml, dayameta dị n'ime bụ 3cm, dayameta dị n'ime nke tube okirikiri etinyere na gel bụ 1cm, omimi ntinye bụ 3cm. Jiri nwayọ gbanye ngbanwe nke cylinder nitrogen. Mgbe data nrụgide egosiri na-adaba na mberede na nke ọma, buru ebe kachasị elu dị ka uru ike achọrọ iji mebie gel. A na-arụ ọrụ nlele ọ bụla ugboro atọ iji nweta nkezi uru.

2. Nsonaazụ nnwale na mkparịta ụka

2.1 Ngwa nke usoro nyocha iji nwalee ike gel nke cellulose ether

N'ihi nyochaa ike gel nke cellulose ether site na nleba anya, na-ewere ngwọta ether cellulose na ntinye nke 0.02 g / mL dịka ọmụmaatụ, enwere ike ịmara na ọkwa ike bụ A mgbe okpomọkụ dị 65.°C, na ike na-amalite ịba ụba ka okpomọkụ na-abawanye, mgbe okpomọkụ ruru 75℃, ọ na-egosi ọnọdụ gel, ọkwa ike na-agbanwe site na B ruo D, na mgbe okpomọkụ na-ebili ruo 120℃, Ike ọkwa na-aghọ F. Enwere ike ịhụ na nyocha nke usoro nyocha a na-egosi naanị ike ike nke gel, ma enweghị ike iji data iji gosipụta ike dị iche iche nke gel, ya bụ, ọ bụ qualitative ma ọ bụghị. ọnụọgụgụ. Uru nke usoro a bụ na ọrụ ahụ dị mfe na nghọta, na gel nwere ike achọrọ nwere ike kpuchie ọnụ ala site na usoro a.

2.2 Ntinye nke usoro ntụgharị iji nwalee ike gel nke cellulose ether

Mgbe ngwọta na-ekpo ọkụ na 80°C, viscosity nke ngwọta bụ 61mPa·s, mgbe ahụ viscosity na-abawanye ngwa ngwa, wee rute uru kachasị nke 46 790 mPa·s na 100°C, na ike na-ebelata. Nke a ekwekọghị n'ihe a hụburu na viscosity nke hydroxypropyl methylcellulose ether aqueous solution na-amalite ịbawanye na 65.°C, na gels na-apụta na gburugburu 75°C na ike na-aga n'ihu na-abawanye. Ihe kpatara ihe omume a bụ na gel agbajiri n'ihi ntụgharị nke rotor mgbe ị na-anwale ike gel nke cellulose ether, na-ebute data na-ezighị ezi nke ike gel na okpomọkụ na-esote. Ya mere, usoro a adịghị mma maka ịlele ike nke cellulose ether gels.

2.3 Ndabere nke usoro oghere oghere iji nwalee ike gel nke cellulose ether

A tụlere nsonaazụ nnwale nke ike cellulose ether gel site na usoro mmeghe nke na-emepe emepe. Usoro a anaghị agụnye ntụgharị nke rotor, n'ihi ya, enwere ike izere nsogbu nke ịkpacha colloidal na nkwụsị nke ntụgharị nke rotor kpatara. Site na nsonaazụ nnwale ndị dị n'elu, enwere ike ịhụ na usoro a nwere ike ịnwale ike nke gel. Mgbe okpomọkụ dị 100°C, ike nke cellulose ether gel na ntinye nke 4% karịrị 0.1 MPa (ogo kachasị elu), na ike enweghị ike ịlele karịa 0.1 MPa. Ike nke gel, ya bụ, njedebe elu nke ike gel nwalere site na usoro a bụ 0.1 MPa. N'ime nnwale a, ike nke cellulose ether gel dị elu karịa 0.1 MPa, ya mere usoro a adịghị mma maka ịlele ike nke cellulose ether gel.

2.4 Ntinye nke usoro nrụgide dị mma iji nwalee ike gel nke cellulose ether

Ejiri usoro nrụgide dị mma iji nyochaa nsonaazụ nnwale nke cellulose ether gel ike. Enwere ike ịhụ na usoro a nwere ike ịnwale gel na ike karịa 0.1 MPa. Usoro nnweta data ejiri na nnwale ahụ na-eme ka nsonaazụ nnwale ahụ bụrụ nke ziri ezi karịa data ọgụgụ mmadụ n'usoro ogo agụụ.

3. Nkwubi okwu

Ike gel nke cellulose ether gosipụtara omume na-abawanye ụba na mmụba nke okpomọkụ. Usoro ntụgharị na usoro oghere oghere adịghị mma maka ịchọpụta ike nke cellulose ether gel. Usoro nleba anya nwere ike tụọ naanị ike nke cellulose ether gel, na usoro nrụgide dị mma agbakwunyere ọhụrụ nwere ike ịnwale ike nke cellulose ether gel.