1. Menene babban manufar HPMC?
Ana amfani da wannan samfurin a matsayin mai kauri, mai wargazawa, mai ɗaurewa, mai cire sinadarai, mai hana mai, mai cikewa, mai fitar da sinadarai masu guba da kuma mai daidaita sinadarai a masana'antar yadi. Haka kuma ana amfani da shi sosai a masana'antar roba, sinadarai masu guba, yumbu, takarda, fata, magani, abinci da kayan kwalliya.
2. Menene rawar daHPMCa cikin foda na ciki na bango?
HPMC yana da ayyuka uku: foda mai kauri don bango na ciki, kauri, kulle ruwa da gini. Tattarawa: Ana iya tattara Methyl cellulose ta hanyar ruwan sha ko ruwan sha don kiyaye ayyuka iri ɗaya da daidaito da hana gudana da ratayewa. Ruwan kullewa: Foda na bango na ciki yana bushewa a hankali, kuma ƙarin sinadarin lemun tsami yana bayyana a cikin amfani da ruwa. Gina injiniya: Methyl cellulose yana da aikin jika, wanda zai iya sa foda mai kauri na bango na ciki ya sami kyakkyawan tsarin injiniya. HPMC ba ya shiga cikin canjin dukkan sinadarai, amma yana shiga cikin sake cikawa kawai. Foda mai kauri na bango na ciki, a bango, canjin sinadarai ne, saboda akwai sabon canjin sinadarai, ana cire foda mai kauri na bango na ciki daga bango, ana niƙa shi, kuma ana sake amfani da shi. Saboda an samar da sabon sinadarin sinadarai (calcium bicarbonate). Babban abubuwan da ke cikin foda mai launin toka sune: cakuda Ca(OH)2, CaO da ƙaramin adadin CaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O a cikin ruwa da iska A ƙarƙashin aikin CO2, ana samar da sinadarin calcium carbonate, yayin da HPMC ke riƙe ruwa kawai kuma yana taimakawa wajen samar da sinadarin toka mai kyau, kuma baya shiga cikin kowane irin martani da kansa.
3. Yadda ake tantance ingancinHPMCa sauƙaƙe kuma a hankali?
(1) Fari: Duk da cewa fari ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara mai haske a cikin tsarin samarwa, zai shafi ingancinsa. Duk da haka, kyawawan kayayyaki suna da farin launi mai kyau. (2) Tsantsar siffa: Tsantsar siffa ta HPMC gabaɗaya raga ce ta 80 da raga 100, raga 120 ƙasa da haka, kuma yawancin HPMC da ake samarwa a Hebei raga ce ta 80. Mafi ƙanƙantar siffa, mafi kyau gabaɗaya. (3) Watsawa: Sanya hydroxypropyl methylcellulose (HPMC) a cikin ruwa don samar da colloid mai haske, kuma duba watsawar sa. Girman watsawa, mafi kyau, yana nuna cewa akwai ƙarancin narkewa a ciki. . Shukewar siffa ta tsaye gabaɗaya tana da kyau, kuma siffa ta kwance ta fi muni, amma ba yana nufin cewa ingancin siffa ta tsaye ta fi ta siffa ta kwance kyau ba. Har yanzu ana ƙayyade ingancin samfurin ta hanyar dalilai da yawa. (4) Raba: Girman siffa, mafi nauyi mafi kyau. Babban keɓancewa gabaɗaya yana faruwa ne saboda yawan sinadarin hydroxypropyl da ke cikinsa, kuma yawan sinadarin hydroxypropyl, haka nan riƙon ruwa zai fi kyau.
4. Me ya kamata a kula da shi yayin amfani da danko da zafin jiki na HPMC?
Danko na HPMC yana da daidaiton da ya dace da zafin jiki, wato, danko yana ƙaruwa yayin da zafin jiki ke raguwa. Yawanci muna cewa danko na wani samfuri yana nufin sakamakon gwajin ruwansa na kashi 2% a zafin digiri 20 na Celsius. A aikace, a yankunan da ke da babban bambancin zafin jiki tsakanin lokacin rani da hunturu, ya kamata a lura cewa ana ba da shawarar amfani da danko mai ƙarancin ƙarfi a lokacin hunturu, wanda ya fi dacewa da gini. In ba haka ba, idan zafin ya yi ƙasa, danko na cellulose zai ƙaru, kuma hannun zai ji nauyi lokacin da aka goge shi.
5. Waɗanne hanyoyi ne ake bi wajen narkar da HPMC?
Hanyar narkar da ruwan zafi: Tunda HPMC ba ya narkar da ruwan zafi, HPMC za a iya watsa shi a cikin ruwan zafi a matakin farko, sannan a narkar da shi da sauri idan ya huce. An bayyana hanyoyi guda biyu na yau da kullun kamar haka: 1). Adadin ruwan zafi kuma a dumama shi zuwa kusan 70°C. A hankali a zuba hydroxypropyl methylcellulose a hankali a juya shi, a fara shawagi a saman ruwan, sannan a yi slurry a hankali, sannan a sanya slurry a sanyaya shi da juyawa. 2). A zuba 1/3 ko 2/3 na adadin ruwan da ake buƙata a cikin akwati a dumama shi zuwa 70°C. Bisa ga hanyar 1), a watsa HPMC don shirya slurry na ruwan zafi; sannan a ƙara sauran adadin ruwan sanyi a cikin ruwan zafi. A cikin slurry, a sanyaya cakuda bayan an juya. Hanyar haɗa foda: a haɗa foda na HPMC da adadi mai yawa na sauran kayan foda, a gauraya sosai da injin niƙa, sannan a ƙara ruwa don narkewa, sannan a iya narkar da HPMC a wannan lokacin ba tare da taruwa da haɗuwa ba, saboda kowace ƙaramin kusurwa, akwai ɗan ƙaramin HPMC. Foda zai narke nan da nan lokacin da ya haɗu da ruwa. -Masana'antun foda na putty da turmi suna amfani da wannan hanyar. [Ana amfani da Hydroxypropyl methyl cellulose (HPMC) azaman mai kauri da mai riƙe ruwa a cikin turmi na putty. ]
6. Menene adadin HPMC da aka ƙara a cikin foda putty?
AdadinHPMCAna amfani da shi a aikace-aikacen da aka saba yi ya bambanta dangane da yanayi, zafin jiki, ingancin sinadarin calcium na toka na gida, dabarar foda putty, da kuma "ingancin da abokan ciniki ke buƙata". Gabaɗaya, yana tsakanin kilogiram 4 zuwa kilogiram 5. Misali, foda putty da ake amfani da shi a cikin kayan ado na Beijing galibi kilogiram 5 ne; foda putty a Guizhou galibi kilogiram 5 ne a lokacin rani da kilogiram 4.5 a lokacin hunturu; adadin ƙarin Yunnan ƙarami ne, gabaɗaya kilogiram 3-4 da sauransu.
Lokacin Saƙo: Afrilu-26-2024