Kedu ihe bụ njigide mmiri nke methyl cellulose ether (MC)

Kedu ihe bụ njigide mmiri nke methyl cellulose ether (MC)

Azịza: Ọkwa nke njide mmiri bụ otu n'ime ihe ndị dị mkpa na-egosi ịdị mma nke methyl cellulose ether, karịsịa n'ime obere oyi akwa na-ewu nke simenti dabeere na gypsum. Ejikwa mmiri emelitere nke ọma nwere ike igbochi ihe omume nke mfu ike na mgbawa nke ihicha oke na enweghị hydration kpatara. Njide mmiri dị mma nke methyl cellulose ether n'okpuru ọnọdụ okpomọkụ dị elu bụ otu n'ime ihe ndị dị mkpa na-egosi ọdịiche dị na arụmọrụ nke methyl cellulose ether. N'okpuru ọnọdụ nkịtị, ọtụtụ methyl cellulose ethers na-ebelata njigide mmiri ha ka okpomọkụ na-ebili. Mgbe okpomọkụ na-ebili na 40 Celsius C, njigide mmiri nke methyl cellulose ethers na-emekarị na-ebelata nke ukwuu, nke dị ezigbo mkpa na ebe ọkụ na nke akọrọ Na ihe na-ewu ụlọ na-egbuke egbuke n'akụkụ anwụ n'oge okpomọkụ ga-enwe mmetụta dị egwu. Otú ọ dị, ime ka ọ bụrụ na enweghi njide mmiri site na nnukwu doses ga-eme ka viscosity dị elu nke ihe ahụ n'ihi nnukwu doses, nke ga-eme ka ọ ghara ịdị na-ewu ụlọ.

Njide mmiri dị ezigbo mkpa iji kwalite usoro siri ike nke sistemụ gelling ịnweta. N'okpuru ọrụ nke cellulose ether, a na-eji nwayọọ nwayọọ na-ahapụ mmiri ahụ na oyi akwa ma ọ bụ ikuku ruo ogologo oge, si otú a na-ahụ na ihe ciment (ciment ma ọ bụ gypsum) nwere ogologo oge iji mee ka mmiri na-emekọ ihe ma jiri nwayọọ nwayọọ sie ike.

Kedu ihe bụ njirimara methyl cellulose ether?

Azịza: Ọ bụ naanị obere methyl cellulose ether ka a na-agbakwunye, na arụmọrụ gypsum mortar ga-akawanye mma nke ukwuu.

(1) Gbanwee nkwekọ

A na-eji Methyl cellulose ether eme ihe dị ka ihe na-eme ka ọ dị nro iji dozie nkwụsi ike nke usoro ahụ.

(2) Gbanwee ọchịchọ mmiri

N'ime usoro ngwa agha gypsum, ọchịchọ mmiri bụ ihe dị mkpa. Ihe achọrọ mmiri bụ isi, na mmepụta ngwa agha jikọtara ya, dabere na nhazi nke ụrọ gypsum, ya bụ ọnụọgụ limestone, perlite, wdg. agbakwunyere. Ntinye nke methyl cellulose ether nwere ike imeziwanye agụụ mmiri na mpụta ngwa agha nke gypsum mortar.

(3) Njide mmiri

Njide mmiri nke methyl cellulose ether, onye nwere ike gbanwee oge mmeghe na usoro coagulation nke usoro ngwa agha gypsum, ka ọ wee gbanwee oge ọrụ nke usoro ahụ; abụọ methyl cellulose ether nwere ike jiri nwayọọ nwayọọ hapụ mmiri ruo ogologo oge Ikike iji hụ na njikọ dị n'etiti ngwaahịa na mkpụrụ.

(4) Gbanwee rheology

Mgbakwunye nke methyl cellulose ether nwere ike ịhazigharị rheology nke usoro gypsum plasta nke ọma, si otú a na-eme ka arụ ọrụ na-arụ ọrụ dị mma: ngwa agha gypsum nwere arụmọrụ ka mma, ịrụ ọrụ mgbochi sag ka mma, enweghị nrapado na ngwá ọrụ ihe owuwu na arụ ọrụ pulping dị elu, wdg.

Kedu otu esi ahọrọ ether methyl cellulose kwesịrị ekwesị?

Azịza: Methyl cellulose ether ngwaahịa nwere dị iche iche e ji mara dị ka ha etherification usoro, ogo etherification, viscosity nke aqueous ngwọta, anụ ahụ Njirimara dị ka urughuru fineness, solubility e ji mara na mgbanwe ụzọ. Iji nweta mmetụta kachasị mma, ọ dị mkpa ịhọrọ akara ziri ezi nke cellulose ether maka mpaghara ngwa dị iche iche, na akara methyl cellulose ether ahọpụtara ga-adabarịrị na usoro ngwa agha eji.

Methyl cellulose ethers dị na viscosities dị iche iche iji gboo mkpa dị iche iche. Methyl cellulose ether nwere ike ịrụ ọrụ naanị mgbe agbazechara, na ọnụego mgbasa ya ga-agbanwerịrị na mpaghara ngwa na usoro iwu. Ngwakọta ntụ ntụ dị mma dabara maka sistemu ngwa agha agwakọtara akpọnwụ (dị ka plasta ịgbasa). Ihe dị oke mma nke methyl cellulose ether nwere ike hụ na mgbasa ngwa ngwa, nke mere na arụmọrụ ya dị mma nwere ike ịrụ ọrụ nke ọma n'oge dị mkpirikpi mgbe e guzobere ngwa agha mmiri. Ọ na-abawanye ndagide na njigide mmiri nke ngwa agha n'ime obere oge. Nke a na atụmatụ bụ karịsịa adabara n'ibu ewu, n'ihi na n'ozuzu, na Ịgwakọta oge nke mmiri na akọrọ-mix ngwa agha bụ nnọọ mkpụmkpụ n'oge n'ibu na-ewu.

Kedu ihe bụ njigide mmiri nke methyl cellulose ether?

Azịza: Ọrụ kachasị mkpa nke ọkwa dị iche iche nke methyl cellulose ether (MC) bụ ikike njigide mmiri ha na usoro ihe eji ewu ụlọ. Iji nweta ezigbo ọrụ, ọ dị mkpa idobe mmiri zuru oke na ngwa ngwa ruo ogologo oge. N'ihi na mmiri na-arụ ọrụ dị ka mmanu na ihe mgbaze n'etiti inorganic components, mkpa-layer ngwa agha nwere ike na-carded na mkpara plaster nwere ike ịgbasa na trowels. Mgbidi ma ọ bụ taịlị ndị na-amị amị adịghị mkpa ka a na-ete ya tupu ha ejiri ụrọ gbakwunyere cellulose ether. Ya mere, MC nwere ike iweta nsonaazụ ihe owuwu ngwa ngwa na nke akụ na ụba.

Iji dozie ya, ihe cimenti dị ka gypsum kwesịrị iji mmiri mee ka mmiri dị ọcha. Ọnụ ego MC nwere ezi uche nwere ike idowe mmiri na ngwa ngwa ogologo oge, ka nhazi na usoro siri ike wee gaa n'ihu. Ọnụ ego MC chọrọ iji nweta ikike njigide mmiri zuru oke na-adabere na absorptivity nke isi, ihe mejupụtara nke ngwa agha ahụ, ọkpụrụkpụ nke akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa, na oge nhazi nke ihe simenti.

Ka oke urughuru nke MC dịkwuo mma, ngwa ngwa ngwa ngwa ahụ na-eto eto.