Yadda za a gwada danko na hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose don ginawa yana buƙatar guje wa shigar da ruwa a cikin bango, kuma riƙe da adadin ruwan da ya dace a cikin turmi zai iya sa simintin ya samar da kyakkyawan aiki ga ruwa da ruwa. Hydroxypropyl methylcellulose Dankowar cellulose a cikin turmi yana daidai da kai tsaye, mafi girman danko, mafi kyawun riƙe ruwa na hydroxypropyl methylcellulose.

Da zarar abun ciki na hydroxypropyl methylcellulose ya yi yawa, riƙewar ruwa na hydroxypropyl methylcellulose zai ragu, wanda kai tsaye zai haifar da raguwar ingancin aikin hydroxypropyl methylcellulose. Mun kuma san abubuwan da suke iya yin kuskure. Ya kamata a koyaushe mu kiyaye shi sabo kuma za mu sami sakamako mara tsammani.

Bayyanar danko alama ce mai mahimmanci na hydroxypropyl methylcellulose. Hanyoyin ƙaddara na yau da kullun sune viscometry na juyawa, viscometry capillary da faɗuwar viscometry na kaka.

A da, hanyar ƙayyade hydroxypropyl methylcellulose shine capillary viscometry, ta amfani da viscometer Ubbelohde. Yawanci maganin ƙaddara shine maganin ruwa na 2, kuma dabarar ita ce: V=Kdt. V yana wakiltar danko, naúrar shine , K shine madaidaicin viscometer, d yana wakiltar yawa a yawan zafin jiki, t yana nufin lokaci daga sama zuwa kasa ta hanyar viscometer, naúrar shine s na biyu. Wannan hanya yana da ɗan wahala don aiki, kuma idan akwai abubuwa marasa narkewa, yana da sauƙin haifar da kurakurai, kuma yana da wahala a gano ingancin hydroxypropyl methylcellulose.

Matsalar delamination na ginin gine-gine shine babban matsala da abokan ciniki ke fuskanta. Da farko, ya kamata a yi la'akari da matsalar albarkatun kasa a cikin delamination na manne gini. Babban dalilin delamination na ginin manne ne polyvinyl barasa (PVA) da kuma hydroxypropyl methylcellulose (HPMC). rashin jituwa ya haifar. Na biyu, saboda lokacin motsa jiki bai isa ba; Bugu da kari, aikin thickening na ginin manne ba shi da kyau.

A cikin manne gini, dole ne a yi amfani da hydroxypropyl methylcellulose (HPMC) nan take, saboda hydroxypropyl methylcellulose (HPMC) kawai ana tarwatsewa cikin ruwa ba tare da narkar da gaske ba. Kusan mintuna 2, dankowar ruwa a hankali yana ƙaruwa, yana samar da colloid mai haske.

Abubuwan da aka narke mai zafi, lokacin da aka hadu da ruwan sanyi, zasu iya watse da sauri cikin ruwan zafi kuma su ɓace cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa takamaiman zafin jiki, danƙon zai bayyana a hankali har sai ya zama colloid mai haske. Adadin da aka ba da shawarar hydroxypropyl methylcellulose (HPMC) da aka ƙara zuwa manne gini shine 2-4kg.

Hydroxypropyl methylcellulose (HPMC) yana da kaddarorin sinadarai masu tsayayye, juriya na mildew, da kuma riƙe ruwa mai kyau a cikin manne gini, kuma canje-canje a ƙimar pH baya shafar su. Ana iya amfani da shi tare da danko daga 100,000 S zuwa 200,000 S. Amma a cikin samarwa, mafi girma da danko, mafi kyau. Danko yana da inversely gwargwado da ƙarfin haɗin gwiwa. Mafi girman danko, ƙaramin ƙarfi. Gabaɗaya, danko na 100,000 S ya dace.