1. Bayanin HPMC
Hydroxypropyl methylcellulose (HPMC a takaice) abu ne na polymer na halitta wanda aka saba amfani dashi, ana amfani dashi sosai a cikin gini, sutura, magani, abinci da sauran fannoni. Ana samun HPMC ta hanyar gyare-gyaren sinadarai na cellulose na halitta, yana da solubility na ruwa da rashin daidaituwa, kuma ba shi da narkewa a cikin kaushi na kwayoyin halitta. Saboda kyakkyawar solubility na ruwa, mannewa, thickening, dakatarwa da sauran kaddarorin, HPMC an yi amfani da shi sosai a cikin masana'antar gine-gine, musamman ma a cikin aikace-aikacen sa foda.
2. Matsayin HPMC a cikin putty foda
Putty foda wani kayan gini ne da ake amfani da shi don maganin bango, kuma manyan abubuwan da ke cikinsa sune filaye da ɗaure. HPMC, a matsayin na kowa thickener da ruwa-retaining wakili, zai iya yadda ya kamata inganta yi na putty foda, musamman ciki har da wadannan abubuwa:
Thickening sakamako: HPMC Forms a colloidal bayani bayan narkewa a cikin ruwa, wanda yana da karfi thickening sakamako, zai iya inganta rheological Properties na putty foda, sa shi da dace danko, kauce wa kasancewa ma bakin ciki lokacin da ake ji, da kuma inganta ta'aziyya na aiki.
Inganta aikin gini: Sakamakon thickening na HPMC ba zai iya sanya foda ba kawai zai iya yin sag ko drip yayin aiwatar da aikace-aikacen ba, amma kuma yana haɓaka mannewa na foda, yana sauƙaƙa amfani da bango, don haka inganta ingantaccen gini.
Inganta riƙewar ruwa: HPMC na iya yadda ya kamata riƙe ruwa a cikin foda mai sanyaya kuma yana rage yawan ƙawancen ruwa. Wannan na iya hana saman busasshiyar foda daga bushewa da sauri, tabbatar da aiki yayin gini, da kuma guje wa fasa da zubarwa.
Inganta taɓawa da santsi: HPMC ba kawai zai iya haɓaka ductility na putty foda ba, amma kuma yana haɓaka shimfidar shimfidarsa, yana sa sabulun sabulu ya zama santsi, wanda ke haifar da ayyukan fenti na gaba. A lokacin aikin ginin, HPMC na iya samar da mafi kyawun santsi da rage haɓakar lahani da kumfa.
Inganta kwanciyar hankali na gini: Bugu da ƙari na HPMC na iya inganta haɓakar hazo na putty foda, hana ƙaddamar da ƙwayoyin lafiya a cikinta, da kuma tabbatar da cewa inganci da aikin putty foda ba zai canza mahimmanci ba a lokacin ajiya na dogon lokaci.
Inganta tsattsauran ra'ayi: Ta hanyar riƙewar ruwa da sakamako mai kauri na HPMC, za'a iya inganta juriyar juriya na putty foda, za'a iya kaucewa raguwa a bango, kuma za'a iya tsawaita rayuwar sabis.
3. Dace danko na HPMC
Sakamakon HPMC a cikin sa foda yana da alaƙa da danko. Ya kamata a ƙayyade zaɓi na danko bisa ga ƙayyadaddun bukatun putty foda da yanayin gini. Gabaɗaya magana, danko na HPMC ya tashi daga ɗaruruwa zuwa dubun dubatar millipoise (mPa·s), wanda daga cikinsu viscosities daban-daban sun dace da nau'ikan nau'ikan sa foda da buƙatun gini.
Low danko HPMC (kimanin 1000-3000 mPa·s): dace da sauƙi putty foda ko tushe putty, yafi amfani a cikin yanayi inda mafi girma fluidity ake bukata. Low danko HPMC iya samar da mafi kyau shafi yi, yin putty foda sauki aiki, amma ruwa riƙewa da tsaga juriya ne in mun gwada da rauni.
Matsakaici danko HPMC (kimanin 3000-8000 mPa ·s): dace da mafi yawan na kowa putty foda dabara, wanda zai iya samar da mai kyau ruwa riƙewa da anti-hazo yayin da rike mai kyau ruwa. HPMC na wannan danko ba zai iya saduwa da buƙatun shafi kawai a lokacin gini ba, amma kuma yana hana matsaloli kamar fashewa da fadowa.
High danko HPMC (kimanin 8000-20000 mPa ·s): dace da lokacin farin ciki yadudduka na putty foda ko lokatai bukatar karfi thickening sakamako. High danko HPMC iya samar da mafi lokacin farin ciki shafi yi da kwanciyar hankali, kuma ya dace da shafi aikace-aikace da bukatar karfi taba da santsi, amma ya kamata a lura da cewa ma high danko na iya sa putty foda ya zama ma danko da kuma rinjayar da yi aiki.
A cikin aikace-aikacen aikace-aikacen, ya kamata a zaɓi danko mai dacewa na HPMC bisa ga yanayin amfani da hanyar gini na foda. Alal misali, a lokacin da bango surface ne in mun gwada da m ko mahara Constructions ake bukata, a mafi girma danko HPMC za a iya zaba don bunkasa mannewa da crack juriya na shafi; yayin da a lokatai da ke buƙatar haɓakar ruwa da sauri da sauri, ana iya zaɓar ƙananan danko zuwa matsakaicin HPMC.
Hydroxypropyl methylcellulosewani abu ne mai mahimmanci na ginin gine-gine wanda zai iya inganta aikin gine-gine, riƙewar ruwa, mannewa da juriya na tsagi na putty foda. Zaɓin danko na HPMC daidai yana da mahimmanci don aikace-aikacen foda. Za'a iya daidaita danko daban-daban bisa ga nau'in foda na putty, yanayin gini, da bukatun aiki. A cikin ainihin samarwa da gini, sarrafa danko na HPMC na iya cimma ingantacciyar tasirin gini da aiki na dogon lokaci. Sabili da haka, bisa ga buƙatun gine-gine daban-daban, zaɓi mai dacewa da daidaitawa da danko na HPMC wani muhimmin mataki ne don tabbatar da aiki da ingancin foda.
Lokacin aikawa: Maris 25-2025