Yanzu da ake samun ƙarin kasuwanni don hydroxypropyl carboxymethyl cellulose kuma farashin ba su daidaita ba, yadda ake tantance ingancin hydroxypropyl carboxymethyl cellulose cikin sauƙi da sauri ya zama babban batu! 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 tantance ko HPMC ya dace da amfani ba, wasu masana'antun da ba su da hankali za su ƙara wani abu mai haske yayin sarrafawa, wanda zai shafi ingancinsa. Amma gabaɗaya, yawancin ƙwayoyin cellulose masu kyau suna da kyakkyawan farin.
Na biyu, ya dogara ne da kyawun hydroxypropyl methylcellulose: girman barbashi na hydroxypropyl carboxymethyl cellulose shine raga 80-100, ƙasa da raga 120, kuma hydroxyethyl cellulose HECHPMC shine raga 100. Yawancin hpmc shine raga 60-80. Gabaɗaya, laushin methyl cellulose, mafi kyawun watsawa.
Hasken cellulose ether a cikin maganin: sanya HPMC a cikin ruwa don samar da maganin colloidal mai haske, mafi girman haske, mafi girman haske, mafi girman abubuwan da ba za su iya narkewa ba.
Idan aka ɗumama kayan, sai ya yi laushi ko ya narke sannan ya narke. Yana da kama da hydrophobic kuma yana narkewa. Siminti shine babban abin da ke haɗa da kuma kawar da danshi ga foda putty mai jure ruwa. Ka'idar juriyar ruwa ita ce kamar haka: lokacin da aka haɗa foda latex da siminti mai narkewa da ruwa, foda latex zai ci gaba da komawa zuwa ga asalin emulsion, kuma ƙwayoyin latex suna watsewa daidai cikin simintin siminti. Bayan simintin ya haɗu da ruwa, amsawar ruwa zai fara, kuma maganin Ca(OH)2 ya kai ga cikawa kuma lu'ulu'u suna haɓɓaka. A lokaci guda, ana samar da lu'ulu'u na ettringite da calcium silicate hydrate colloids, kuma ƙwayoyin latex suna zuba a kan gel ɗin On da ƙwayoyin siminti marasa ruwa, yayin da amsawar ruwa ke ci gaba, samfuran ruwa suna ci gaba da ƙaruwa, kuma ƙwayoyin latex suna taruwa a hankali a cikin ramukan kayan da ba su da ruwa kamar siminti, kuma suna samar da wani yanki mai cike da yawa a saman gel ɗin siminti. , saboda raguwar danshi a hankali na busasshiyar danshi, ƙwayoyin latex da aka tattara a cikin gel da voids suna haɗuwa don samar da fim mai ci gaba, suna samar da cakuda tare da matrix mai shiga cikin manna siminti, kuma suna yin manna siminti da sauran foda. An manne da juna.
Lokacin Saƙo: Mayu-11-2023