Mmetụta ikuku nke cellulose ether

Cellulose ethers bụ polymer sịntetik nke sitere na cellulose eke ma megharịa ya na kemịkal. Cellulose ether bụ ihe sitere na cellulose eke. N'adịghị ka polymers sịntetik, mmepụta cellulose ether dabeere na cellulose, ihe kachasị mkpa, ihe mejupụtara polymer eke. N'ihi nkọwapụta nke usoro cellulose eke, cellulose n'onwe ya enweghị ike imeghachi omume na ndị ọrụ etherizing. Otú ọ dị, mgbe ọgwụgwọ nke solubilizers gasịrị, a na-ebibi njikọ siri ike nke hydrogen n'etiti na n'ime agbụ molecular, na a na-ahapụkwa ọrụ hydroxyl n'ime cellulose alkali na ikike imeghachi omume, na mgbe mmeghachi omume nke onye na-eme ihe na-emepụta ihe na-agbanwe, otu OH gbanwere. n'ime otu OR iji nweta cellulose ether.

Cellulose ethers nwere mmetụta ikuku ikuku doro anya na ihe simenti agwakọtara ọhụrụ. Cellulose ethers nwere ma hydrophilic (hydroxyl, ether) na hydrophobic (methyl, glucose ring) dị iche iche na ndị surfactants na elu ọrụ ma si otú ahụ na-enwe ikuku-entraning mmetụta. Mmetụta ikuku nke cellulose ether ga-emepụta mmetụta "bọọlụ", nke nwere ike imeziwanye ọrụ nke ihe ọhụrụ ahụ, dị ka ịba ụba plasticity na ire ụtọ nke ngwa agha mgbe a na-arụ ọrụ, nke bara uru maka ịgbasa ngwa agha; ọ ga-emekwa ka mkpụrụ nke ngwa agha dịkwuo mma ma belata ọnụ ahịa nke mmepụta ngwa agha; Otú ọ dị, ọ ga-eme ka porosity nke ihe siri ike na-eme ka ọ dịkwuo elu ma belata ike ya na modul elastic, wdg. Mechanical Njirimara.

Dị ka a surfactant, cellulose ether nwekwara a wetting ma ọ bụ lubricating mmetụta na ciment ahụ, nke ọnụ ya na ikuku-entraining mmetụta na-abawanye na fluidity nke cementitious ihe, ma ya ndim mmetụta ebelata fluidity, na mmetụta nke cellulose ether na fluidity. ihe cimentious bụ ngwakọta nke plasticizing na thickening mmetụta. N'ikwu okwu n'ozuzu, mgbe ọnụọgụ cellulose ether dị ntakịrị, ọ na-egosikarị mmetụta nke plasticization ma ọ bụ mbelata mmiri; mgbe ọnụ ọgụgụ ahụ dị elu, mmetụta dị nro nke cellulose ether na-abawanye ngwa ngwa, na mmetụta ikuku ya na-eme ka ọ dịkwuo elu, n'ihi ya, ọ na-egosi mmetụta dị nro ma ọ bụ na-amụba mmiri chọrọ.