Don yin hukunci akan ingancin hydroxypropyl methyl cellulose

Yanzuhydroxypropyl carboxymethyl celluloseKasuwancin tallace-tallace da yawa, farashin ba daidai ba ne, yadda za a hanzarta share ingancin hydroxypropyl methyl cellulose ya zama matsala mai mahimmanci! Don haka ta yaya za a yi hukunci da ingancin hydroxypropyl methylcellulose? Abu na farko da za a duba shine farin hydroxypropyl cellulose; Ko da yake fari ba zai iya bayyana ko HPMC ya dace da aikace-aikace, amma a kan aiwatar da aiki akwai wasu miyagun masana'antun za su ƙara wani whitening wakili, zai cutar da ingancinsa. Amma gabaɗaya magana, mafi yawan ingantaccen ether cellulose shine mafi kyawun fari.

Na biyu, don ganin fineness na hydroxypropyl methyl cellulose: hydroxypropyl carboxymethyl cellulose barbashi girman 80-100 raga, 120 raga kasa, hydroxyethyl cellulose HECHPMC game da 100 raga. HPMC don yawancin raga 60-80, janar methyl cellulose mai laushi, mafi kyawun watsawa.

Magani na cellulose ether tsabta:HPMCsanya a cikin ruwa don samar da m colloid bayani, duba mafi girma da ƙuduri, mafi girma da ƙuduri, cewa ba ya narkar da sinadaran ne m.

Lokacin da kayan ya yi zafi, an sanya shi gelatinized ko kuma a hade shi kuma a sake narke shi. Yana da hydrophobic da ruwa mai narkewa. Kankare shine mabuɗin haɗin gwiwa da lalata kayan albarkatun ruwa na ƙoshin sa mai jure ruwa. Ka'idarsa mai jure ruwa shine kamar haka: A cikin aiwatar da ƙara ruwa da motsa foda da siminti wanda za'a iya tarwatsawa, foda ɗin latex yana ci gaba da komawa zuwa sigar emulsion na asali, kuma ƙwayoyin latex suna tarwatsa su daidai a cikin simintin siminti. Bayan da siminti ya hadu da ruwa, da hydration dauki fara, da kuma Ca (OH) 2 bayani kai jikewa da kuma precipitate lu'ulu'u, kuma a lokaci guda, ettringite lu'ulu'u da calcium silicate hydrate colloid an samar. Ana ajiye barbashi na latex akan gel da barbashi siminti mara ruwa. Tare da ci gaban hydration dauki, hydration kayayyakin suna karuwa, da kuma latex barbashi suna sannu a hankali tattara a cikin maras na inorganic kayan kamar siminti, da kuma samar da wani kusa tara Layer a saman siminti gel. Saboda raguwar busassun ruwa a hankali, damƙar cushe da aka sake tarwatsa ɓangarorin latex a cikin gels da voids suna tattarawa don samar da fim mai ci gaba, suna samar da cakuda siminti mai tsaka-tsakin matrix, da haɗawa da man siminti tare da sauran aggregates foda.