Hydroxyethyl Methyl Cellulose (HEMC) wani abu ne na halitta polymer abu cellulose. Yana da polymer mai narkewa da ruwa da aka kafa bayan gyare-gyaren sinadarai kuma yana da aikace-aikace da yawa. A matsayin muhimmin ether cellulose mai narkewa da ruwa, yana da abubuwa da yawa na musamman na jiki da sinadarai kuma ana amfani dashi sosai a cikin gini, sutura, kayan kwalliya, abinci da magani.
1. Tsarin sinadaran da abun da ke ciki
Hydroxyethyl methyl cellulose ne modified cellulose kafa ta etherification dauki cellulose tare da ethylene oxide (epoxy) da methyl chloride bayan Alkali magani. Tsarin sinadaransa ya ƙunshi kwarangwal cellulose da wasu madogara guda biyu, hydroxyethyl da methoxy. Gabatarwar hydroxyethyl zai iya inganta haɓakar ruwa, yayin da gabatarwar methoxy zai iya inganta yanayin hydrophobicity, yana sa ya sami kwanciyar hankali mafi kyau da kuma aikin samar da fim.
2. Solubility
Hydroxyethyl methyl cellulose shine ether cellulose maras ionic tare da ingantaccen ruwa mai kyau, wanda za'a iya narkar da shi cikin ruwan sanyi da ruwan zafi. Ba ya amsawa tare da ions a cikin ruwa lokacin da ya narke, don haka yana da kyakkyawan narkewa a ƙarƙashin yanayi daban-daban na ruwa. Tsarin rushewa yana buƙatar a tarwatsa shi daidai a cikin ruwan sanyi da farko, kuma bayan wani lokaci na kumburi, an samar da wani nau'i mai kama da gaskiya a hankali. A cikin abubuwan kaushi na kwayoyin halitta, HEMC yana nuna rarrabuwar kawuna, musamman a cikin kaushi na polar sosai kamar ethanol da ethylene glycol, wanda zai iya narkar da shi.
3. Dankowa
Danko na HEMC yana ɗaya daga cikin mahimman kaddarorin sa kuma ana amfani dashi sosai a cikin kauri, dakatarwa da ƙirƙirar fim. Dankin sa yana canzawa tare da canje-canje a cikin maida hankali, zazzabi da ƙimar ƙarfi. Gabaɗaya, danko na maganin yana ƙaruwa sosai tare da haɓakar maida hankali. Magani tare da matsayi mafi girma yana nuna babban danko kuma ya dace da amfani da shi azaman mai kauri don kayan gini, sutura da adhesives. A cikin wani nau'i na zafin jiki, danko na maganin HEMC yana raguwa tare da yawan zafin jiki, kuma wannan dukiya ya sa ya dace da aikace-aikacen masana'antu a ƙarƙashin yanayin zafi daban-daban.
4. Thermal kwanciyar hankali
Hydroxyethyl methylcellulose yana nuna kyakkyawan kwanciyar hankali na thermal a babban yanayin zafi kuma yana da wasu juriya na zafi. Gabaɗaya, a ƙarƙashin yanayin zafi mai ƙarfi (kamar sama da 100 ° C), tsarin kwayoyin halittarsa yana da ƙarfi kuma ba shi da sauƙin ruɓe ko ƙasƙanci. Wannan yana ba da damar HEMC don kiyaye kauri, riƙewar ruwa da abubuwan haɗin kai a cikin yanayin zafi mai zafi a cikin masana'antar gini (kamar tsarin bushewar turmi) ba tare da yin tasiri sosai ba saboda canjin yanayin zafi.
5. Kauri
HEMC yana da kyawawan kaddarorin kauri kuma yana da inganci sosai mai kauri wanda ake amfani da shi sosai a cikin tsarin ƙira daban-daban. Yana iya yadda ya kamata ƙara danko na ruwaye mafita, emulsions da suspensions, kuma yana da kyau karfi thinning Properties. A ƙananan ƙananan ƙira, HEMC na iya ƙara yawan danko na tsarin, yayin da a cikin ƙananan ƙididdiga yana nuna ƙananan danko, wanda ke taimakawa wajen inganta sauƙin aiki yayin aikace-aikacen. Tasirinsa mai kauri ba wai kawai yana da alaƙa da maida hankali ba, amma kuma yana shafar ƙimar pH da zafin jiki na maganin.
6. Riƙe ruwa
Yawancin lokaci ana amfani da HEMC azaman wakili mai riƙe ruwa a cikin masana'antar gini. Kyakkyawan riƙewar ruwa na iya tsawaita lokacin amsawar hydration na kayan tushen siminti da haɓaka aikin aiki da mannewa na turmi gini. A yayin aikin ginin, HEMC na iya rage asarar ruwa yadda ya kamata tare da guje wa matsaloli kamar tsagewa da asarar ƙarfi da bushewar turmi da sauri ke haifarwa. Bugu da ƙari, a cikin fenti da tawada masu tushen ruwa, riƙewar ruwa na HEMC kuma zai iya kula da ruwan fenti, inganta aikin ginin fenti da santsi.
7. Biocompatibility da aminci
Saboda HEMC ya samo asali ne daga cellulose na halitta, yana da kyau biocompatibility da low toxicity. Don haka, an kuma yi amfani da shi sosai a fannin likitanci da kayan kwalliya. Ana iya amfani da shi azaman wakili mai tarwatsewa ko mai dorewa a cikin allunan ƙwayoyi don taimakawa barga sakin magunguna a cikin jiki. Bugu da ƙari, a matsayin mai kauri da mai samar da fina-finai a cikin kayan shafawa, HEMC na iya samar da sakamako mai laushi ga fata, kuma kyakkyawan aminci ya sa ya dace da amfani na dogon lokaci.
8. Filayen aikace-aikace
Saboda da multifunctional Properties na hydroxyethyl methylcellulose, shi da aka yadu amfani a da yawa masana'antu filayen:
Masana'antar gine-gine: A cikin kayan gini kamar turmi siminti, foda, da samfuran gypsum, ana iya amfani da HEMC azaman mai kauri, wakili mai riƙe ruwa, da manne don haɓaka aikin gini da ƙãre ingancin samfurin.
Rubutu da tawada: Ana amfani da HEMC sosai a cikin fenti na tushen ruwa da tawada a matsayin mai kauri da daidaitawa don inganta daidaitawa, kwanciyar hankali, da kyalli na fenti bayan bushewa.
Filin likitanci: A matsayin mai rarrabuwar kawuna, mannewa da dorewa-saki a cikin dillalan magunguna, yana iya daidaita yawan sakin magunguna a cikin jiki da haɓaka haɓakar ƙwayoyin cuta.
Kayan shafawa da kayan kulawa na sirri: A cikin kayan kulawa na mutum kamar su lotions, creams, da shamfu, ana iya amfani da HEMC azaman mai kauri da mai laushi, kuma yana da kyakkyawar alaƙar fata da gashi.
Masana'antar abinci: A cikin wasu abinci, ana iya amfani da HEMC azaman stabilizer, emulsifier da wakili mai ƙirƙirar fim. Kodayake amfani da shi a cikin abinci yana ƙarƙashin ƙayyadaddun tsari a wasu ƙasashe, an san amincinsa sosai.
9. Zaman lafiyar muhalli da lalacewa
A matsayin abu na tushen halitta, HEMC na iya raguwa a hankali a cikin mahalli, kuma tsarin lalata shi yana aiwatar da shi ta hanyar aikin ƙwayoyin cuta. Saboda haka, HEMC yana da ƙarancin ƙazanta ga muhalli bayan amfani da shi kuma shine sinadari mai dacewa da muhalli. A karkashin yanayi na halitta, HEMC na iya ƙarshe bazuwa zuwa ruwa, carbon dioxide da sauran ƙananan ƙwayoyin cuta, kuma ba zai haifar da gurɓataccen gurɓataccen lokaci na dogon lokaci a cikin ƙasa da ruwa ba.
Hydroxyethyl methylcellulose ne mai matukar muhimmanci ruwa mai narkewa cellulose. Saboda ta musamman jiki da kuma sinadaran Properties kamar kyau kwarai thickening, ruwa riƙewa, thermal kwanciyar hankali da kuma biocompatibility, shi ne yadu amfani da yawa masana'antu irin su yi, coatings, magani, kayan shafawa, da dai sauransu Its kyau kwarai solubility da danko iko ikon sa shi wani muhimmin ƙari na aiki a cikin tsarin ƙira daban-daban. Musamman a fagen da ya wajaba don ƙara dankon samfur, tsawaita rayuwar sabis ko inganta aikin aiki, HEMC yana taka rawar da ba za a iya maye gurbinsa ba. A lokaci guda, a matsayin abu mai mahimmanci na muhalli, HEMC ya nuna kyakkyawan dorewa a cikin aikace-aikacen masana'antu kuma yana da kyakkyawar kasuwa.
Lokacin aikawa: Satumba-27-2024