Ngokui-hydroxypropyl carboxymethyl celluloseImarike yokuthengisa ngakumbi nangakumbi, ixabiso alilingani, indlela yokucima ngokukhawuleza umgangatho we-hydroxypropyl methyl cellulose ibe yingxaki ebalulekileyo! Ke ungawugweba njani umgangatho we-hydroxypropyl methylcellulose? Into yokuqala yokujonga ubumhlophe be-hydroxypropyl cellulose; Nangona ubumhlophe bungenakucaca ukuba ngaba i-HPMC ilungele isicelo, kodwa kwinkqubo yokucubungula kukho kwakhona abanye abavelisi ababi baya kongeza i-arhente emhlophe, iya kulimaza umgangatho wayo. Kodwa xa sithetha ngokubanzi, uninzi lwe-cellulose ether ebalaseleyo bubumhlophe obungcono.
Okwesibini, ukubona ubuhle be-hydroxypropyl methyl cellulose: i-hydroxypropyl carboxymethyl cellulose i-particle size ye-80-100 mesh, i-120 mesh ngaphantsi, i-hydroxyethyl cellulose HECHPMC malunga ne-100 mesh. I-HPMC kuninzi lwe-60-80 mesh, i-methyl cellulose jikelele ethambileyo, ukusasazwa okungcono.
Isisombululo se-cellulose ether ecacileyo:HPMCifakwe emanzini ukuvelisa i-colloid ecacileyo isisombululo, jonga phezulu kwesisombululo, iphezulu isisombululo, engayinyibilikiyo into yekhemikhali iphantsi.
Xa imveliso ishushu, igalelwa igelatin okanye idityaniswe ize iphinde inyibilike. I-hydrophobic kunye ne-soluble yamanzi. Ikhonkrithi yeyona nto iphambili yokudibanisa kunye ne-demulsification imathiriyeli ekrwada yeputty enganyangekiyo ngamanzi. Umgaqo wayo wokumelana namanzi umi ngolu hlobo lulandelayo: Kwinkqubo yokongeza amanzi kunye nokuvuselela i-latex powder kunye ne-samente, i-latex powder igcina ibuyela kwifom ye-emulsion yasekuqaleni, kwaye iinqununu ze-latex zihlakazwe ngokulinganayo kwi-samente paste. Emva kokuba i-samente idibana namanzi, i-hydration reaction iqala, kwaye i-Ca (OH) isisombululo se-2 sifikelela kwi-saturation kunye ne-precipitates crystals, kwaye ngexesha elifanayo, i-crystals ettringite kunye ne-calcium silicate hydrate colloids zenziwa. Amasuntswana eLatex afakwe kwijeli kunye neesuntswana zesamente ezingenamanzi. Ngenkqubela phambili ye-hydration reaction, iimveliso ze-hydration ziyanda, kwaye amasuntswana e-latex aqokelelwa ngokuthe ngcembe kwindawo engenanto ye-inorganic materials njenge-samente, kwaye enze umaleko osondeleyo kumphezulu wejeli yesamente. Ngenxa yokunciphisa ngokuthe ngcembe amanzi omileyo, i-latex epakishwe ngokuqinileyo iphinde idilizwe amasuntswana e-latex kwiigels kunye ne-voids condense ukuze zenze ifilimu eqhubekayo, yenze umxube we-cement paste interpenetrating matrix, kunye nokudibanisa i-cement paste kunye nezinye i-powder aggregates.
Ixesha lokuposa: Apr-28-2024