Hydroxypropyl methyl cellulose HPMC ne mara ionic cellulose ether sanya daga halitta polymer abu cellulose ta jerin sinadaran aiki. Farin foda ne mara wari, mara ɗanɗano kuma mara guba wanda ke kumbura a cikin wani bayani na colloidal bayyananne ko ɗan turbid a cikin ruwan sanyi. Yana yana da halaye na thickening, bonding, watsawa, emulsification, film samuwar, dakatar, adsorption, gelation, surface aiki, danshi rike da m colloid. Hydroxypropyl methylcellulose za a iya amfani da a ginin kayan, shafi masana'antu, roba guduro, yumbu masana'antu, magani, abinci, yadi, noma, yau da kullum sunadarai masana'antu da sauran masana'antu.
Ayyukan riƙewar ruwa da ƙa'ida: cellulose ether HPMC galibi yana taka rawa na riƙewar ruwa da kauri a cikin turmi na ciminti da slurry na tushen gypsum, wanda zai iya inganta ƙarfin haɗin gwiwa da sag juriya na slurry. Abubuwa kamar zafin iska, zafin jiki da saurin matsa lamba na iska za su yi tasiri ga yawan canjin ruwa a cikin turmi siminti da samfuran tushen gypsum. Sabili da haka, a cikin yanayi daban-daban, akwai wasu bambance-bambance a cikin tasirin riƙewar ruwa na adadin samfuran HPMC iri ɗaya. A cikin ƙayyadaddun ginin, ana iya daidaita tasirin riƙe ruwa na slurry ta ƙara ko rage adadin adadin HPMC da aka ƙara.
Riƙewar ruwa na methyl cellulose ether a ƙarƙashin yanayin zafi mai girma alama ce mai mahimmanci don bambanta ingancin methyl cellulose ether. Mafi kyawun samfuran samfuran HPMC na iya magance matsalar riƙe ruwa da kyau a yanayin zafi mai yawa. A cikin yanayin zafi mai zafi, musamman a wurare masu zafi da bushewa da kuma gine-gine na bakin ciki a gefen rana, ana buƙatar HPMC mai inganci don inganta riƙe ruwa na slurry.
HPMC mai inganci yana da daidaitattun daidaito. Ƙungiyoyin methoxy da hydroxypropoxy suna rarraba daidai gwargwado tare da sarkar kwayar halitta ta cellulose, wanda zai iya inganta ƙarfin kwayoyin oxygen akan hydroxyl da ether bond don haɗuwa da ruwa don samar da haɗin gwiwar hydrogen. , Ta yadda ruwan kyauta ya zama ruwan da aka daure, ta yadda ya dace da sarrafa fitar da ruwa da ke haifar da yanayin zafi mai yawa, da samun isasshen ruwa.
High quality-cellulose HPMC za a iya uniformly kuma yadda ya kamata a tarwatsa a cikin siminti turmi da gypsum na tushen kayayyakin, da kuma kunsa duk m barbashi, da kuma samar da wani Layer na wetting fim. Ana fitar da ruwan da ke cikin tushe a hankali na tsawon lokaci. Abun da aka ƙulla yana jujjuya halayen hydration, don tabbatar da ƙarfin haɗin gwiwa da ƙarfin matsawa na kayan. Sabili da haka, a cikin yanayin zafi mai zafi na ginin rani, don samun sakamako na riƙewar ruwa, dole ne a ƙara samfurori masu inganci na HPMC a cikin adadi mai yawa bisa ga tsari, in ba haka ba, rashin isasshen ruwa, rage ƙarfi, tsagewa, raguwa da fadowa. zai faru saboda yawan bushewa. Matsaloli, amma kuma suna ƙara wahalar ma'aikatan gini. Yayin da zafin jiki ya ragu, adadin HPMC da aka kara za a iya ragewa a hankali, kuma ana iya samun irin wannan tasirin ruwa.
Riƙewar ruwa na HPMC yana shafar abubuwa masu zuwa:
1. Homogeneity na cellulose ether HPMC
A cikin HPMC da aka yi kama da juna, ƙungiyoyin methoxy da hydroxypropoxy suna rarraba daidai gwargwado, kuma yawan riƙe ruwa yana da yawa.
2. Thermal gel zafin jiki na cellulose ether HPMC
Thermal gel zafin jiki yana da girma, yawan riƙe ruwa yana da yawa; akasin haka, yawan ajiyar ruwa yana da ƙasa.
3. Danko na cellulose ether HPMC
Lokacin da danko na HPMC ya karu, yawan ajiyar ruwa kuma yana ƙaruwa; lokacin da danko ya kai wani matakin, karuwa a cikin adadin ajiyar ruwa yakan zama lebur.
4. Bugu da ƙari na cellulose ether HPMC
Mafi girman adadin cellulose ether HPMC da aka kara, mafi girma yawan adadin ruwa kuma mafi kyawun tasirin ruwa. A cikin kewayon 0.25-0.6% ƙari, yawan riƙewar ruwa yana ƙaruwa da sauri tare da karuwar adadin adadin; lokacin da adadin adadin ya ƙara ƙaruwa, haɓakar haɓakar yanayin riƙe ruwa yana raguwa.
Lokacin aikawa: Dec-16-2021