Ihe nrapado nke sitere na ndagwurugwu na-eme ihe bụ ngwa kacha ukwuu nke ngwa ngwa a gwakọtara. Ọ bụ ụdị organic ma ọ bụ na-etinye ciment dị ka ihe mkpuchi ciment na mgbakwunye na nchịkọta grading, onye na-ahụ maka njide mmiri, onye isi ike na-agbakwunye na ntụ ntụ na mbubreyo. ngwakọta. N'ozuzu, ọ dị naanị mkpa ka a gwakọta ya na mmiri. E jiri ya tụnyere ngwa agha ciment nkịtị, ọ nwere ike ime ka njikọ nke njikọ dị n'etiti ihe na ihe ndị na-eche ihu na mkpụrụ, nwere ezigbo mgbochi mgbochi na-eguzogide na iguzogide mmiri. A na-ejikwa ya maka ịchọ mma nke ime ụlọ na mpụga, taịl na ihe eji achọ mma. A na-ejikarị ya mma na mma ụlọ na mpụga mgbidi, ala, ụlọ ịsa ahụ, wdg. Akụrụngwa Ihe.
Ọtụtụ mgbe, mgbe anyị na-ekpe ikpe arụmọrụ nke taịlị, anyị kwesịrị ị toa ntị na ike ya na oge mmeghe na mgbakwunye arụmọrụ ya na ikike na-egbochi ya. Na mgbakwunye na imetụta Njirimara Njirimara nke Parlinein, dị ka ịdị ire nke ọrụ, ọnọdụ nke mma mkpuchi, wdg, cellulose ehuru nwere ihe dị ike na arụ ọrụ nke taịlị.
1. Oge ghere oghe
Mgbe olePolymer na-acha uhie uhienacellugul etherConey na mmiri mmiri, ụfọdụ ụdị data na-egosi na ntụ ntụ roba siri ike nke jikọtara ya na ngwaahịa hydration dị iche iche na mmiri mmiri, nke na-emetụta ọtụtụ. Oge viscosity na itu oge nke ngwa agha. Ebube elu nke cellulose ether buru ibu karịa nke a na-ahụ maka polulose ether cellulose na ngwanrọ na-aba uru ịhọrọ nkekọ na-eto eto n'etiti elu ala na cellulose ether.
Na mmiri mmiri, mmiri dị na ngwa agha ahụ na-emebi, a na-ehiwe ihe nkiri n'elu, nke na-ebelata oke nke na-esote ya, ebe mmiri na-ebelata site na ngwa agha. A na - eme ka ọ bụrụ na mbata na ọ bụ akwa oyi akwa ahụ, a na - emeghe nke akpụkpọ ahụ, na ọpụpụ mmiri ga - ewetakwu sel elu na elu nke ngwa agha.
Ihe nkiri nke cellose ether n'elu ihe ọkụkụ ahụ nwere nnukwu mmetụta na arụmọrụ nke ngwa agha:
Nke mbu, ihe nkiri a guzoro dị mkpa, ọ ga-emebi ya ugboro abụọ, enweghị ike ịmachi mmiri mmiri, belata ike.
Nke abụọ, ihe nkiri a kpụrụ akpụ dị oke ibu, ịta mkpụrụ ndụ sel na-ete mmiri nke njigide nke njikọta nke eriri afọ dị elu, na viscosis buru ibu. Mgbe a na-ama jijiji taịlị, ọ dịghị mfe imebi ihe nkiri ahụ.
Site na nke a, a na-aghọta na ihe nkiri ahụ na-akpụzi akụrụngwa nke cellulose eat nwere nnukwu mmetụta na mmeghe. Ofdị cellulose ether (HPMC,Mmeghe, Mc, wdg) na ogo nke ihe nnọchianya (ogo nke dochie anya) na-emetụta ihe ndị na-akpụ akpụ ihe nkiri nke cellulose eat, na nke siri ike na ihe nkiri.
2, Ike
Na mgbakwunye na ị na-enye ihe bara uru na-akọwa ihe dị iche iche akọwara n'elu ngwa agha, cellulose ether na-akwụ ụgwọ azụ ngwa ngwa kinertics nke ciment. Ego a bụ n'ihi mgbasa ozi nke cellorption mother mother na-ekwupụta ihe dị iche iche na-ekwu, mana mkpụrụ osisi celdrated na mmiri dị ka CSH na Calcium hydroxide. Na ngwaahịa kemịkal, ọ na-adịkarịghị agbasa mgbasa ozi na mpaghara mineral nke cliker. Na mgbakwunye, n'ihi mmụba na viscosis nke pochcosity nke ihe ngwọta nke eyments (cal), ...) na-egbu oge na-egbu oge usoro hydration.
Visate bụ ihe ọzọ dị mkpa nke na-anọchite anya akụrụngwa kemịkal nke eyers cellususe. Dị ka m kwuru n'elu, viscosity na-emetụta ikike njigide mmiri ma nweekwa mmetụta dị ukwuu na ọrụ ọhụrụ. Agbanyeghị, nyocha nnwale achọpụtala na viscosity nke mkpụrụ osisi cellulose na-enweghị mmetụta na hydration kinetics kinetics nke ciment. Ibu molecular enwetụghị obere mmetụta na hydration, na nnukwu ọdịiche dị n'etiti oke molecular dị naanị min. Ya mere, ibu molecula abụghị ihe dị mkpa maka ịchịkwa hydration hydration.
"Ngwa nke cellulose na nke sitere na ngwa agha ciment akọrọ" na-ekwu n'ụzọ doro anya na nchigharị nke Cellose Eth na-adabere na ihe owuwu kemịkal ya. Nzube zuru oke bụ nke a na mhec, dị elu ogo methylation, nke pere mpe nke cellulose ether. Na mgbakwunye, njigide hydrophilictions (dị ka iji dochie anya HEC) na-ekwupụtaghachi karịa oke (dịka eji dochie mh, Mhec, MHPC). Mmetụta nke cellulose Ewer na-emetụta parameter abụọ nke ụdị na ọnụọgụ nke otu.
Nnwale usoro anyị mebere na ọdịnaya nke ndị eji arụ ọrụ na-arụ ọrụ dị mkpa na ike ọrụ nke taịl nrapado. Anyị na-enyocha arụmọrụ nke HPMC na ogo dị iche iche nke dochie anya nghazi, ma nwalee sellulose eart abụọ nwere akụkụ dị iche iche n'okpuru ọnọdụ ịgwọ ọrịa. Mmetụta nke akụrụngwa nke taịl na-alọta, ọgụgụ 2 na eserese nke mgbanwe na Methoxy (MS) na-agbanwe ọdịnaya nke taịlị nke taịlị.
Odidi ahu 2
Odidi ahu 3
Na ule ahụ, anyị na-atụleHydroxypylthylthth cellulose (hpmc), nke bụ ihe dị mgbagwoju anya. Ya mere, anyị kwesịrị itinye ọnụ ọgụgụ abụọ ahụ. Maka HPMC, anyị chọrọ nri iji hụ na mmiri sonyere na mmiri ọkụ. Anyị maara na ọdịnaya nke ndị nọchiri anya ya. Ọ na-ekpebikwa Gel nke GEL nke HPMC, nke na-ekpebi gburugburu ebe a na-eji HPMC. Ya mere, ọdịnaya nke HPMC na-egosikarị nke a na-ejikarị HPMC. Otu esi ejikọta methoxy na hydropoporopopoxy otu na iji nweta nsonaazụ kacha mma bụ ihe anyị na-amụ. Ọgụgụ 2 na-egosi na n'ime ụfọdụ dị iche iche, mmụba nke ọdịnaya methoxy ga-eweta ihe dị ala nke ike dọtara, mgbe ihe na-eme mmiri ga-abawanye ga-abawanye. Maka oge imeghe, enwere mmetụta ndị ọzọ.
Oge Post: Dec-18-2018