Hydroxypyl methyplulose (HPMC) wani abu ne mai mahimmanci na sinadarai, da ake amfani dashi a cikin filaye da yawa kamar gini, abinci, abinci, da kayan kwaskwarima. Yana da kyakkyawan thickening, m, emulsifying, fim-forming, da kuma haɗin kaddarorin, kuma yana da wata kwanciyar hankali zuwa zazzabi da pH. Solubility na HPMC na ɗaya daga cikin mahimman batutuwa a cikin amfaninta. Fahimtar yadda aka daidaita rushewa yana da mahimmanci don tabbatar da aikinsa.
1. Kayan Rewaya na asali na HPMC
Hydroxypyl methyplulose ne mai narkewa wanda ba ionic ruwa wanda za'a iya narkar da shi a cikin ruwan sanyi ko ruwan zafi don samar da mafita mai gamsarwa ko translucent. Karatunsa shine mafi yawan zafin jiki. Yana da sauƙi a narke cikin ruwan sanyi da sauƙi don samar da Colloid cikin ruwan zafi. HPMC yana da gefation na zafi, wannan shine, yana da talauci a yanayin zafi mafi girma, amma ana iya narkar da gaba ɗaya lokacin da aka saukar da zafin jiki gaba. HPMC tana da ma'aunin nauyi na kwayoyin halitta daban-daban, don haka yayin aiwatar da rushewa, ya kamata a zaɓi samfurin HPMC da ta dace gwargwadon buƙatun kayan.
2. Hanyar rushewa na HPMC
Hanyar watsawa ta ruwan sanyi
Hanyar watsawa ta ruwan sanyi ita ce hanyar rushewa ta HPMC kuma ta dace da yawancin abubuwan aikace-aikacen. Takamaiman matakai kamar haka:
Shirya ruwan sanyi: zuba adadin ruwan da ake buƙata a cikin akwati na hadawa. Yawancin ruwan zafin jiki yawanci ana ba da shawarar ƙasa da 40 ° C don guje wa HPMC daga samar da lumps a tsananin yanayin zafi.
A hankali ƙara HPMC: Sannu a hankali ƙara HPMC foda kuma ci gaba da motsawa. Don kauce wa agglomeration na agglomeration, ya kamata a yi amfani da saurin motsa jiki na motsa jiki don tabbatar da cewa HPMC za a iya gano shi a cikin ruwa.
Tsaya da narkewa: Bayan an tarwatsa HPMC a cikin ruwan sanyi, yana buƙatar tsayawa don wani lokaci na al'ada. Yawancin lokaci, an bar shi tsaye na minti 30 zuwa sa'o'i da yawa, kuma takamaiman lokacin ya bambanta dangane da tsarin hpmc da zafin jiki. A yayin aiwatar da tsayuwa, HPMC zai narke don samar da maganin viscous.
Hanyar rushewa da kashe ruwa
Hanyar rushewa da kashe ruwa ta dace da wasu nau'ikan HPMAC tare da babban danko ko kuma wahalar narke ruwan sanyi. Wannan hanyar shine farkon haɗuwa da hpmc foda tare da wani ɓangare na ruwan zafi don samar da manna, sannan a haɗa shi da ruwan sanyi don a ƙarshe samun mafita bayani. Takamaiman matakai kamar haka:
Ruwa mai dumama: zafi wani adadin ruwa zuwa kusan 80 ° C kuma zuba shi a cikin akwati mai hadawa.
Dingara HPMC foda: zuba hpmc foda a cikin ruwan zafi da dama yayin zub da fitar da manna cakuda. A cikin ruwan zafi, hpmc zai narke ɗan lokaci kuma ya samar da kayan gel-kamar abu.
Dingara ruwa mai sanyi don tsarma: bayan cakuda da manna cakuda ƙasa, a hankali ƙara ruwan sanyi don tsarfe shi kuma yana ci gaba da bayani gaba daya.
Hatsar kwayar cuta ta hana watsawa
Wani lokaci, domin hanzarta rushe hpmc ko inganta matsalar rushewar wasu aikace-aikace na musamman, za a iya amfani da su da haɗuwa da ruwa don narke HPMAC. Misali, kwayoyin da kwayoyin cuta irin su ethanol da acetone za a iya amfani da su don watsa HPMC da farko, sannan kuma ana iya ƙara ruwa don taimakawa HPMC narke da sauri. Ana amfani da wannan hanyar a cikin samar da wasu samfuran da ke da tushe, kamar coatings da masu zane.
Hanyar hadewa ta bushe
Hanyar hadewa ta bushe ta dace da manyan masana'antu. HPMC yawanci pre-bushe hade tare da wasu kayan da aka powed (kamar ciminti, gypsum, da dai sauransu), sannan kuma ana ƙara ruwa don haxa lokacin amfani. Wannan hanyar tana sauƙaƙe matakan aikin kuma yana guje wa matsalar agglomerational lokacin da HPMC ta narkar da ita kaɗai, amma tana buƙatar a lalata hpmc a hankali kuma tana taka rawar gani.
3. Abubuwa suna shafar rushewar HPMC
Zazzabi: Maganar HPMC tana da matukar kulawa da zazzabi. Low zazzabi ne mai dacewa ga watsawa da rushewa a cikin ruwa, yayin da babban zafin jiki yana iya haifar da HPMC don ƙirƙirar colloids, yana hana cikakken rushewarsa. Sabili da haka, ana ba da shawarar yawanci don amfani da ruwan sanyi ko sarrafa zafin jiki na ruwa a ƙasa 40 ° C lokacin narkar da HPMC.
Saurin motsa jiki: Matsa madaidaiciya yana iya guje wa agglomation na HPMC gaba ɗaya, don haka ta hanzarta ƙididdigar rushewa. Koyaya, saurin saurin motsawa na iya gabatar da babban adadin kumfa kuma yana shafar daidaituwa na maganin. Sabili da haka, a cikin ainihin aiki, saurin haɓakar motsa jiki da kayan aiki ya kamata a zaɓi.
Ingancin ruwa: Rashin ƙarfi, taurin kai, ƙimar pH, da sauransu cikin ruwa zai shafi warwarewar HPMC. Musamman, alli da magnesium ions a cikin ruwa mai wuya na iya amsawa tare da HPMC kuma yana shafar warwareta. Saboda haka, ta amfani da tsarkakakken ruwa ko ruwa mai taushi yana taimakawa haɓaka ingancin warwarewa na HPMC.
HPMC Model da nauyin kwayoyin: daban-daban na HPMC sun bambanta a cikin saurin rushewa, danko da rushewa yanayin zafin jiki. HPMC tare da nauyin ƙwayoyin kwayar cutar kwayar cuta a hankali, yana da mai danko mai tsayi, kuma yana ɗaukar tsawon lokaci don narkewa gaba ɗaya. Zabi tsarin HPMC dama na iya inganta ingantaccen aiki da kuma biyan bukatun buƙatun daban-daban.
4. Matsaloli gama gari da mafita a cikin HPMC rushewa
Matsalar Agglomeration: Lokacin da HPMC ta narke cikin ruwa, agglomations na iya samar idan ba a hana foda ba. Don kauce wa wannan matsalar, ya kamata a ƙara hpmC a hankali yayin rushewar da kuma ci gaba da saurin motsa jiki, yayin guje wa ƙara HPMC foda a yanayin zafi.
Magani mara kyau: Idan zuga bai isa ba ko lokacin tsayawa isasshen isarwa, hpmc bazai iya narkar da gaba ɗaya ba, sakamakon hakan mara kyau. A wannan lokacin, ya kamata a tsawaita lokacin motsa jiki ko lokacin tsayawar ya kamata a ƙara don tabbatar da cikakkiyar rushewa.
Matsalar kumfa: Matsaloli masu saurin motsawa ko impurities a cikin ruwa na iya gabatar da yawan kumfa da yawa, shafi ingancin mafita. A saboda wannan dalili, an bada shawara don sarrafa saurin motsa jiki lokacin da aka narkar da hpmc don kauce wa karar da ya wuce kima, kuma ƙara mai deforer idan ya cancanta.
Rushewar HPMC hanyar haɗi ne a cikin aikace-aikacen ta. Mastering madaidaicin hanyar rushewa yana taimaka inganta inganta ingancin samfurin da haɓaka samarwa. Dangane da nau'ikan nau'ikan HPMC da buƙatun aikace-aikacen, watsawa na ruwan sanyi, ana iya zaɓin watsawa cikin ruwa ko hadewar bushe. A lokaci guda, hankali ya kamata a biya don sarrafa abubuwan da ake iya sarrafawa kamar zafin jiki, saurin motsawa da ingancin ruwa don kauce wa matsaloli kamar agglomeration, kumfa da kuma lalacewa. Ta hanyar inganta yanayin rushewa, ana iya tabbatar da cewa HPMC na iya ba da cikakkiyar wasa zuwa ga thickening da kuma samar da ingantattun hanyoyin samar da masana'antu da yau da kullun.
Lokaci: Satumba 30-2024