Kedu ihe ether methyl cellulose na-eji? Kedu ka e si eme cellulose ether?

Cellulose ether- Thicking na Thixotropy

 Cellulose etherna-enye ngwa agha mmiri mmiri na viscosity dị oke mma, nke nwere ike ịbawanye nchikota n'etiti ngwa agha mmiri na oyi akwa, na-eme ka arụmọrụ mgbochi nke ngwa agha dịkwuo mma, a na-ejikwa ya mee ihe n'ọtụtụ ebe na plasta ngwa agha, seramiiki tile bonding ngwa agha, na mpụta mgbidi mkpuchi usoro. Mmetụta siri ike nke cellulose ether nwekwara ike ịbawanye ikike mgbochi mgbasa na ịdị n'otu nke ihe ọhụrụ, ma gbochie nbibi ihe onwunwe, nkewa, na seepage. Enwere ike iji ya mee ihe na-eme ka eriri na-emesi ike, ihe dị n'okpuru mmiri, na kọmpat nke onwe.

 The ndim mmetụta nkecellulose etherna ihe ndị dabeere na ciment na-abịa site na viscosity nke cellulose ether ngwọta. N'okpuru otu ọnọdụ, nke elu viscosity nkecellulose ether, ka mma viscosity nke ihe ndị sitere na ciment gbanwere. Otú ọ dị, ọ bụrụ na viscosity dị oke elu, ọ ga-emetụta nhazi na ịrụ ọrụ nke ihe onwunwe (dịka ịkwanye mma). Ngwa agha na-edozi onwe ya, ihe na-agbakọ onwe ya, wdg chọrọ mmiri dị elu, na viscosity nke cellulose ether dị ala. Tụkwasị na nke ahụ, mmetụta siri ike nke cellulose ether ga-amụbakwa agụụ mmiri nke mkpụrụ ciment ma mee ka mmepụta nke ngwa agha dịkwuo elu.

Ngwọta mmiri nke nnukwu viscosity cellulose ether nwere thixotropy dị elu, nke bụkwa njirimara cellulose ether. Ihe ngwọta mmiri nke methyl cellulose na-enwekarị pseudoplastic na ndị na-abụghị thixotropic eruba Njirimara dị ala karịa gel okpomọkụ ya, ma na-egosiputa Newtonian eruba na obere shiee ọnụego. N'agbanyeghị ụdị na ogo nke nnọchi nke ndị nnọchi anya, pseudoplasticity na-abawanye na mmụba nke ịdị arọ molekụla ma ọ bụ itinye uche nke ether cellulose. Ya mere, ọ bụrụhaala na itinye uche na okpomọkụ na-adịgide adịgide, cellulose ethers nwere otu ọkwa viscosity (n'agbanyeghị MC,HPMC, HEMC) mgbe niile na-egosipụta otu rheological Njirimara. Mgbe okpomọkụ na-ebili, gel na-emepụta ihe na nnukwu thixotropic eruba na-eme.

 Cellulose etherndị na-emepụta ihe na-agwa gị na cellulose ether nwere nnukwu ịta na obere viscosity nwere thixotropy ọbụna n'okpuru gel okpomọkụ. Ngwongwo a bara ezigbo uru maka owuwu nke ngwa agha iji dozie ọkwa ya na sagging ya. Ọ ga-kwuru na elu viscosity nkecellulose ether, ka mma ya idowe mmiri. Otú ọ dị, ka viscosity dị elu, otú ahụ ka ịdị arọ nke cellulose ether dị n'ịdị elu dị elu, na mbelata kwekọrọ ekwekọ na solubility ya. Ọ nwere mmetụta na-adịghị mma na ntinye uche na nhazi nke ngwa agha.

 Cellulose ether- Egbula oge

 Cellulose ethernwere ike ịgbatị oge nhazi nke ciment slurry ma ọ bụ ngwa agha, na-egbu oge na hydration kinetics nke ciment, ma melite ọrụ ndụ nke ihe ọhụrụ, si otú ahụ na-eme ka nkwụsi ike nke slump n'etiti ngwa agha na ihe. Ogo nke ọnwụ ka oge na-aga, mana ọ nwekwara ike igbu oge ọganihu ihe owuwu ahụ.