Soluble hydroxypropyl methyl cellulose (HPMC) wani nau'in ether ne maras ionic cellulose, wanda aka yi daga halitta polymer cellulose ta jerin sinadaran sarrafa. Hypromellose (HPMC) wani farin foda ne wanda ke narkewa a cikin ruwan sanyi don samar da bayani mai haske, mai danko. Yana yana da kaddarorin thickening, mannewa, watsawa, emulsification, fim forming, dakatar, adsorption, gelation, surface aiki, ruwa riƙewa da colloid kariya. Riƙewar ruwa wani muhimmin abu ne na hypromellose HPMC, wanda kuma yawancin masana'antun turmi masu gauraya rigar ke damun su a China. Abubuwan da ke shafar riƙewar ruwa na turmi mai hade da ruwa sun haɗa da adadin HPMC, dankowar HPMC, girman barbashi da zazzabi na muhalli. HPMC na hypromellose yana taka muhimmiyar rawa a cikin turmi a cikin bangarori uku: kyakkyawar riƙewar ruwa, tasirinsa akan daidaiton turmi da thixotropy, da hulɗar ta da siminti. Aikin kiyaye ruwa na ether cellulose ya dogara ne akan shayar da ruwa na tushe, abun da ke tattare da turmi, kauri na turmi, buƙatar ruwa na turmi da kuma saita lokacin saitin kayan aiki. Da karin haske da hypromellose, mafi kyawun kiyaye ruwa.
Abubuwan da suka shafi riƙewar ruwa na turmi sun haɗa da danko na ether cellulose, adadin ƙarin, ƙarancin ƙwayar ƙwayar cuta da zafin jiki na sabis. Mafi girman danko na ether cellulose, mafi kyawun riƙewar ruwa. Danko shine muhimmin siga na aikin HPMC. Don samfurin iri ɗaya, ana auna ta hanyoyi daban-daban na sakamakon danko ya bambanta da yawa, wasu ma suna ninka bambanci. Don haka, lokacin kwatanta danko, dole ne ya kasance cikin hanyar gwaji iri ɗaya tsakanin, gami da zazzabi, rotor da sauransu. Gabaɗaya magana, mafi girman danko, mafi kyawun tasirin riƙewar ruwa. Duk da haka, mafi girman danko shine, mafi girman nauyin kwayoyin halitta na HPMC shine, solubility na HPMC zai ragu daidai da haka, wanda yana da mummunan tasiri akan ƙarfin da aikin ginin turmi. Mafi girman danko, mafi kyawun tasirin turmi, amma bai dace da dangantakar ba. Mafi girma da danko, da karin danko da rigar turmi zai zama, duka biyu don ginawa, aikin mai danko scraper da babban mannewa ga substrate. Amma ba taimako don ƙara ƙarfin tsarin jikakken turmi kanta ba. Dukansu ginin, yi don aikin anti-sagging. Sabanin haka, wasu gyare-gyaren hypromellose tare da ƙananan danko zuwa matsakaici sun nuna kyakkyawan aiki wajen inganta ƙarfin tsarin jika. Mafi girman abun ciki na ether cellulose a cikin turmi, mafi kyawun kayan da ke riƙe da ruwa, mafi girma da danko kuma mafi kyawun dukiyar ruwa. Har ila yau, lafiya yana nuna mahimmancin aiki don hypromellose. Har ila yau, ingancin hypromellose yana da wani tasiri akan iyawar ruwa. Gabaɗaya, don hypromellose tare da danko iri ɗaya amma daban-daban fineness, a ƙarƙashin adadin ƙari guda ɗaya, mafi kyawun inganci, mafi kyawun tasirin riƙewar ruwa.
A cikin rigar da aka haɗe-haɗe-haɗe, ƙari na cellulose ether HPMC yana da ƙasa sosai, amma yana iya inganta aikin gine-gine na turmi-mixed. Zaɓin da ya dace na hypromellose yana da tasiri mai kyau akan aikin turmi mai hade da rigar.
Lokacin aikawa: Yuli-27-2023