Yanzucellulose hydroxypropyl carboxymethylKasuwar tallace-tallace ta ƙara ƙaruwa, farashin ba ya daidaita, yadda ake share ingancin hydroxypropyl methyl cellulose cikin sauri ya zama babbar matsala! To ta yaya za a tantance ingancin hydroxypropyl methylcellulose? Abu na farko da za a duba shi ne farin hydroxypropyl cellulose; Kodayake farin ba zai iya bayyana ko HPMC ya dace da amfani ba, amma a cikin tsarin sarrafawa akwai kuma wasu masana'antun da ba su da kyau waɗanda za su ƙara wani abu mai farar fata, zai cutar da ingancinsa. Amma gabaɗaya, yawancin ingantaccen cellulose ether shine mafi kyawun farin fata.
Na biyu, don ganin kyawun hydroxypropyl methyl cellulose: girman barbashi na hydroxypropyl carboxymethyl cellulose na raga 80-100, ƙasa da raga 120, hydroxyethyl cellulose HECHPMC kusan raga 100. HPMC ga mafi yawan raga 60-80, methyl cellulose gabaɗaya ya yi laushi, mafi kyawun watsawa.
Maganin bayyanawar cellulose ether:HPMCA saka a cikin ruwa don samar da maganin colloid mai haske, duba girman ƙudurin, girman ƙudurin, wanda ba ya narkar da sinadarin yana ƙasa.
Idan aka dumama kayan, ana haɗa shi da gelatin ko a haɗa shi wuri ɗaya sannan a sake narke shi. Yana da kama da hydrophobic kuma yana narkewa cikin ruwa. Siminti shine babban abin da ke haɗa shi da kuma wargaza sinadarin da ke cikin foda mai jure ruwa. Ka'idarsa ta jure ruwa ita ce kamar haka: A cikin tsarin ƙara ruwa da kuma motsa foda mai jure ruwa da siminti mai sake wargazawa, foda mai jure ruwa yana ci gaba da komawa zuwa ga asalin emulsion, kuma ƙwayoyin latex suna wargazawa cikin manna siminti daidai gwargwado. Bayan simintin ya haɗu da ruwa, amsawar ruwa ta fara, kuma maganin Ca (OH) 2 ya kai ga cikawa kuma ya haifar da lu'ulu'u, kuma a lokaci guda, ana samar da lu'ulu'u na ettringite da calcium silicate hydrate colloids. Ana sanya ƙwayoyin latex a kan gel da ƙwayoyin siminti marasa ruwa. Tare da ci gaban amsawar ruwa, samfuran ruwa suna ƙaruwa, kuma ƙwayoyin latex suna taruwa a hankali a cikin rashin kayan da ba na halitta ba kamar siminti, kuma suna samar da Layer na tarawa kusa a saman gel ɗin siminti. Saboda raguwar busasshen ruwa a hankali, ƙwayoyin latex da aka matse sosai a cikin gels da voids suna taruwa don samar da fim mai ci gaba, suna samar da cakuda ma'aunin matsi na siminti, sannan su haɗa manna siminti da sauran gaurayen foda.
Lokacin Saƙo: Afrilu-28-2024