Hydroxypropyl methylcelluloseshi ne ether cellulose da ke faruwa a zahiri, wanda ba shi da lahani ga jikin ɗan adam. Duk da haka, kayan da ake amfani da su na auduga da kuma HPMC da ake amfani da su a masana'anta duk fuska ne, domin hakan zai yi tasiri ga kura, sauran kuma ba su da illa.
Hydroxypropyl methylcellulose ba mai guba bane. Ana ganin Cellulose ya dace kuma ana sarrafa shi ta hanyar amfani da zaruruwan da ke faruwa ta dabi'a ta hanyar haɗin alkali, amsa grafting, wankewa, bushewa, niƙa da sauran matakai. Ba zai cutar da lafiyar mutane ba.
Hydroxypropyl methyl cellulose, wanda kuma aka sani da hypromellose da cellulose hydroxypropyl methyl ether, ana yin su ta hanyar amfani da cellulose mai tsabta mai tsabta a matsayin albarkatun kasa da kuma jurewa etherification na musamman a ƙarƙashin yanayin alkaline.
A kira na hydroxypropyl methylcellulose: da mai ladabi auduga cellulose da ake bi da lye a 35-40 ℃ na rabin sa'a, squeezed, da cellulose ne crushed, da kuma tsufa da za'ayi a 35 ℃ don sa samu alkali fiber uniformly polymerized. A cikin kewayon da ake buƙata. Saka alkali fiber a cikin kettle etherification, ƙara propylene oxide da methyl chloride a jere, kuma etherify a 50-80 ℃ na 5h, kuma babba matsa lamba ne game da 1.8MPa. Sa'an nan kuma ƙara adadin da ya dace na hydrochloric acid da oxalic acid don wanke kayan a cikin ruwan zafi a 90 ° C don ƙara girma da girma. Dehydrate ta hanyar centrifugation. Swash zuwa tsaka tsaki. Lokacin da abun ciki na ruwa a cikin kayan ya kasance ƙasa da 60%, bushe shi tare da rafi na iska mai zafi a 130 ° C zuwa abun ciki na ƙasa da 5%.
The HPMC samar da sauran ƙarfi hanya yana amfani da toluene da isopropanol a matsayin sauran ƙarfi. Idan aka wanke ta da kyau, sai ta dan samu kamshi kadan. Wannan matsala ce ta tsarin wanke-wanke, wanda bai shafi amfani ko wata matsala ba.
Hypromellose shine auduga mai ladabi wanda ba kasafai ake yin ciki da ruwa don samun cellulose na alkaline ba, sannan yana shiga cikin abubuwan kaushi, abubuwan etherification, toluene da isopropanol don halayen etherification, kuma an cire shi, wanke, bushe, da niƙa don samun samfuran gama. Mummuna da wari, don haka masu amfani za su iya amfani da shi a cikin kwanciyar hankali.
Hydroxypropyl methylcellulose yakamata ya kula da abubuwa masu zuwa a cikin aikace-aikacen:
A cikin tasirin laka foda, hydroxypropyl methylcellulose kawai yana taka rawar gani, kuma baya shiga cikin kowane nau'in sinadarai. Ana zuba garin laka da ruwa sannan a sanya shi a bango, wanda hakan sinadari ne. Saboda samuwar sabbin abubuwa, ana cire fodar laka da ke bangon daga bangon a niƙa ta zama foda don ƙirƙirar sabbin abubuwa. Hydroxypropyl methylcellulose kawai yana riƙe da ruwa kuma yana taimakawa alli mai launin toka don samun ingantacciyar amsa, amma baya shiga cikin kowane amsa.
Hydroxypropyl Methyl Cellulose HPMC baya shiga cikin kowane nau'in sinadari, amma yana taimakawa kawai. Sai a zuba ruwa a cikin garin laka sai a dora a bango, wannan sinadari ne. Saboda samuwar sabbin abubuwa, ana cire foda da ke jikin bango daga bangon a nika ta zama foda, sannan ba zai yiwu ba, domin an yi sabbin abubuwa NS. Babban abubuwan da ke cikin foda mai launin toka shine: Ca (OH) 2, cakuda CaO da ƙaramin adadin CaCO3, CaO
H2O = Ca (OH) 2-Ca (OH) 2 CO2 = CaCO3↓ H2O
Calcium mai launin toka yana samar da wasu abubuwa a ƙarƙashin tasirin ruwa da CO2 a cikin iska, yayin da HPMC ke riƙe da ruwa kawai kuma yana taimakawa calcium mai launin toka don samun amsa mai kyau. Ba ya shiga cikin kowane amsa.
Hydroxypropyl methyl cellulose yana da fa'idar amfani. A cikin rayuwar yau da kullum, yawancin samfurori ba su da bambanci da tsarin masana'antu. Bayan haka, a cikin masana'antu daban-daban, menene tasirin hydroxypropyl methylcellulose, zan yi muku bayani, ta yadda zaku iya hana rashin amfani da shi yayin samun ilimi.
Da farko, a cikin masana'antar gine-gine, ana iya la'akari da shi azaman mai hana ruwa da kuma kiyaye ruwa. Tumin turmi yana da famfo, don haka duk busasshen turmi da muke amfani da shi yana da sa hannu. Bugu da ƙari, a cikin kayan aikin gine-gine irin su gypsum raw, plaster, da laka foda, ana iya amfani da shi azaman mai ɗaure, wanda ba kawai ƙara lokacin aiki ba, amma kuma yana sa fenti ya zama mai laushi. A marmara, m yumbu fale-falen buraka, kwayoyin fili roba kayan ado, shi za a iya amfani da a matsayin mannewa enhancer, da dai sauransu. Ana iya cewa hydroxypropyl methyl cellulose ne mafi shahara ga versatility a gini kayan.
A wasu masana'antu, irin su anta da masana'anta, ana iya amfani da shi azaman abin ɗamara don kera kayan kwalliya da tukwane; a cikin masana'antar lacquer da buga tawada, ana iya amfani da shi azaman foda mara kyau, mai kauri, mai ƙarfi, har ma saboda ana iya haɗa shi da Organic Solvent ko ruwa yana gauraya da kyau, kuma ana iya amfani dashi azaman mai cire fenti a cikin kera ƙwayoyin fili na robobi. , da softeners, mold saki jamiái, lubricants, da dai sauransu.; a cikin masana'anta na polyvinyl chloride, ana ɗaukarsa azaman foda mara nauyi.
Abubuwan da aka yi da hydroxypropyl methylcellulose ana amfani da su sosai a cikin sabbin 'ya'yan itatuwa da kayan marmari, magunguna, fatun dabbobi da masana'antar yadi. Yana da lafiya kuma ba mai guba ba, ba ya da zafi sosai ga ƙwayoyin mucous da fata na jikin mutum, kuma ana iya amfani dashi azaman ƙari na abinci. Sai dai a hakikanin lamarin, kuransa na iya haifar da gurbacewar iska, kuma ba shi da amfani wajen kiyaye fata a ware ta daga wuta don guje wa fashewa.
rike ruwa
Hydroxypropyl methylcellulose na musamman don ginawa yana guje wa yin amfani da ruwa da yawa ta hanyar substrate, kuma ya kamata a ajiye ruwan a cikin filastar gwargwadon yiwuwar lokacin lokacin da gypsum ya cika gaba ɗaya. Wannan dukiya ta musamman ana kiranta riƙewar ruwa kuma tana daidai da ɗankowar maganin hydroxypropyl methylcellulose da ake amfani da shi don gini a cikin filasta. Mafi girman dankon bayani, mafi girman ƙwarewar riƙewar ruwa.
Anti-sagging
Za a iya shafa turmi da ke da kaddarori na musamman na anti-sagging tare da wani kauri mai kauri ba tare da sagging ba, wanda kuma yana nufin cewa turmi da kansa ba ya canza jinsi, in ba haka ba zai zube ƙasa lokacin da aka fara ginin.
Rage danko da sauƙaƙe gini
Bayan ƙara nau'ikan kayan gini na musamman na hydroxypropyl methylcellulose, ana iya samar da filastar gypsum kore tare da ɗanɗano mai ɗanɗano. Lokacin da aka ga ya dace kuma ana amfani da ƙananan danko na musamman na hydroxypropyl methylcellulose na gini, Matsayin danko ya ragu sosai kuma ginin ya zama mai sauƙi. Duk da haka, riƙewar ruwa na hydroxypropyl methylcellulose don gina ƙananan danko yana da rauni sosai, kuma yana da mahimmanci don ƙara yawan adadin.
Adadin dacewa da filastik
Don ƙayyadaddun adadin busassun busassun, ya fi dacewa da tattalin arziki don samar da ƙwayar turmi mafi girma, wanda za'a iya samun ta hanyar ƙara ruwa kaɗan da kumfa. Koyaya, idan adadin ruwa da kumfa ya yi tsayi da yawa, ƙarfin yana da rauni.
Lokacin aikawa: Afrilu-26-2024