Cellulose ether ka gypsum ngwa agha

Ma carboxymethyl cellulose na methyl cellulose nwere ike ji mee ihe dị ka mmiri na-ejigide mmadụ maka plasta, ma mmiri na-ejigide mmetụta nke carboxymethyl cellulose bụ nnọọ ala karịa nke methyl cellulose, na carboxymethyl cellulose nwere sodium nnu, n'ihi ya, ọ bụghị adabara plasta. paris. Nwere mmetụta retarding ma na-ebelata ike plasta nke paris. Methyl cellulose bụ ezigbo admixture maka gypsum cementitious ihe na-ejikọta njigide mmiri, ịgbatị, na-ewusi ike, na viscosifying, ma e wezụga na ụfọdụ ụdị nwere mmetụta nkwụsịtụ mgbe usoro ọgwụgwọ dị ukwuu. dị elu karịa carboxymethyl cellulose. N'ihi nke a, ọtụtụ gypsum composite gelling ihe na-eji usoro nke ịgbakọta carboxymethyl cellulose na methyl cellulose, nke na-abụghị nanị na-egosipụta àgwà ha (dị ka retarding mmetụta nke carboxymethyl cellulose, mmetụta ume nke methyl cellulose ), na-arụ ọrụ ha nkịtị uru. (dị ka njide mmiri ha na mmetụta na-agbapụta). N'ụzọ dị otú a, ma ọrụ njigide mmiri nke gypsum cementity na-arụ ọrụ na-arụ ọrụ zuru ezu nke gypsum cementitious ihe nwere ike ime ka ọ dịkwuo mma, ebe a na-edobe ọnụ ahịa ọnụ ahịa na ebe kachasị ala.

Kedu ka ọ dị mkpa viscosity nke methyl cellulose ether maka ngwa agha gypsum?

Viscosity bụ ihe dị mkpa oke nkemethyl cellulose etherarụmọrụ.

N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma njide mmiri nke gypsum mortar. Otú ọ dị, ka viscosity dị elu, ịdị arọ nke methyl cellulose ether dị elu, na mbelata kwekọrọ na ya ga-enwe mmetụta na-adịghị mma na ike na ịrụ ọrụ nke ngwa agha ahụ. Ihe dị elu nke viscosity, otú ahụ ka ọ na-apụta ìhè nke ọma mmetụta na ngwa ngwa, ma ọ bụghị kpọmkwem. Ka viscosity dị elu, ka ngwa ngwa mmiri ga-adịkwu viscous. N'oge a na-ewu ihe, a na-egosipụta ya dị ka ịrapagidesi ike na scraper na elu adhesion na mkpụrụ. Mana ọ naghị enye aka ịbawanye ike nhazi nke ngwa agha mmiri n'onwe ya. Tụkwasị na nke ahụ, n'oge a na-ewu ihe, arụmọrụ mgbochi sag nke mmiri mmiri adịghị egosi. N'ụzọ megidere nke ahụ, ụfọdụ viscosity ọkara na obere viscosity mana methyl cellulose ethers gbanwere nwere ọmarịcha arụmọrụ n'ịkwalite ike nhazi nke ngwa agha mmiri.

Kedu ka ịdị mma nke cellulose ether dị na ngwa agha?

Ịdị mma bụkwa ihe ngosi arụmọrụ dị mkpa nke methyl cellulose ether. A na-achọrọ MC a na-eji ntụ ntụ ntụ akọrọ ka ọ bụrụ ntụ ntụ nke nwere mmiri dị ala, na ịdị mma na-achọkwa 20% ruo 60% nke nha nha ka ọ bụrụ ihe na-erughị 63m. Ịdị mma na-emetụta solubility nke methyl cellulose ether. Oke MC na-abụkarị granular, nke dị mfe ịgbasa na igbari n'ime mmiri na-enweghị agglomeration, ma mgbasa ozi na-adị nnọọ ngwa ngwa, n'ihi ya, ọ dịghị adabara iji akọrọ ntụ ntụ ngwa agha. Ụfọdụ ngwaahịa ndị a na-emepụta n'ụlọ na-agbagharị agbagharị, ọ dịghị mfe ịgbasa na igbari n'ime mmiri, ọ dịkwa mfe ịgbasa . N'ime ngwa ngwa ntụ ntụ akọrọ, MC na-agbasasị n'etiti mkpokọta, ezigbo ihe na-ejuputa na simenti na ihe ciment ndị ọzọ. Naanị ezigbo ntụ ntụ nwere ike izere methyl cellulose ether agglomeration mgbe ị na-agwakọta mmiri. Mgbe MC na-agbakwunyere mmiri iji gbazee agglomerates, ọ na-esiri ike ịgbasa na igbari. Nnukwu MC abụghị naanị ihe efu, kamakwa ọ na-ebelata ike mpaghara nke ngwa agha ahụ. Mgbe a na-etinye ụrọ ntụ ntụ dị otú ahụ na nnukwu ebe, a ga-ebelata ọsọ ọsọ nke ngwa agha mpaghara, na mgbawa ga-apụta n'ihi oge ọgwụgwọ dị iche iche. Maka ngwa agha a na-efesa na-arụ ọrụ, ihe a chọrọ maka ịdị mma dị elu n'ihi oge ngwakọta dị mkpụmkpụ.

Ịdị mma nke MC nwekwara mmetụta ụfọdụ na njide mmiri ya. N'ikwu okwu n'ozuzu, maka methyl cellulose ethers nwere otu viscosity mana ịdị mma dị iche iche, n'okpuru otu ego agbakwunyere, nke kachasị mma na-eme ka mmetụta njide mmiri dịkwuo mma.