Hydroxypropyl methylcellulosewani sinadari ne na cellulose ether wanda ke samuwa ta halitta, wanda ba shi da illa ga jikin ɗan adam. Duk da haka, kayan da aka yi amfani da su na auduga da HPMC da ake amfani da su a masana'antar duk fuska ne, domin wannan zai yi tasirin ƙura, sauran kuma ba su da illa.
Hydroxypropyl methylcellulose ba shi da guba. Ana ɗaukar Cellulose ya dace kuma ana sarrafa shi ta hanyar amfani da zare na halitta ta hanyar haɗa alkali, amsawar dashen, wankewa, busarwa, niƙa da sauran hanyoyin. Ba zai yi wa lafiyar mutane barazana ba.
Ana yin Hydroxypropyl methyl cellulose, wanda kuma aka sani da hypromellose da cellulose hydroxypropyl methyl ether, ta hanyar amfani da auduga mai tsabta sosai a matsayin kayan aiki da kuma yin etherification na musamman a ƙarƙashin yanayin alkaline.
Haɗa hydroxypropyl methylcellulose: ana shafa cellulose na auduga mai ladabi da lye a zafin 35-40℃ na rabin sa'a, a matse, a niƙa cellulose, sannan a yi tsufa a zafin 35℃ don a yi amfani da zare na alkali da aka samu a polymerized daidai gwargwado. A cikin kewayon da ake buƙata. Sanya zare na alkali a cikin kettle na etherification, a ƙara propylene oxide da methyl chloride a jere, sannan a tace a zafin 50-80℃ na tsawon awanni 5, kuma matsin lamba na sama ya kai kusan 1.8MPa. Sannan a ƙara adadin hydrochloric acid da oxalic acid da ya dace don wanke kayan a cikin ruwan zafi a zafin 90°C don ƙara girma da girma. A tace ta hanyar centrifugation. A wanke zuwa tsaka tsaki. Lokacin da ruwan da ke cikin kayan ya kasance ƙasa da kashi 60%, a busar da shi da ruwan zafi a zafin 130°C zuwa abun da ke ƙasa da kashi 5%.
HPMC da aka samar ta hanyar narkewar abinci yana amfani da toluene da isopropanol a matsayin sinadarin narkewar abinci. Idan aka wanke shi da kyau, zai ɗan ji ƙamshi kaɗan. Wannan matsala ce ta tsarin wankewa, wanda ba ya shafar amfani ko wata matsala.
Hypromellose auduga ce mai kyau wadda ba kasafai ake saka ta cikin ruwa don samun sinadarin alkaline cellulose ba, sannan tana shiga cikin sinadarai masu narkewa, sinadaran etherification, toluene da isopropanol don halayen etherification, kuma ana tace ta, a wanke ta, a busar da ita, sannan a niƙa ta don samun kayayyakin da aka gama. Tana da muni sosai kuma tana da wari, don haka masu amfani za su iya amfani da ita cikin yanayi mai kyau.
Ya kamata a kula da Hydroxypropyl methylcellulose a cikin waɗannan abubuwan:
A tasirin foda mai laka, hydroxypropyl methylcellulose yana taka rawa ne kawai, kuma baya shiga cikin duk wani martanin sinadarai. Ana ƙara foda mai laka da ruwa a saka a bango, wanda hakan martanin sinadarai ne. Saboda samuwar sabbin abubuwa, ana cire foda mai laka da ke kan bango daga bango a niƙa shi ya zama foda don samar da sabbin abubuwa. Hydroxypropyl methylcellulose yana riƙe ruwa ne kawai kuma yana taimakawa sinadarin calcium mai launin toka don samun mafi kyawun amsawa, amma baya shiga cikin kowace amsa.
Hydroxypropyl Methyl Cellulose HPMC ba ya shiga cikin wani abu na sinadarai, amma yana taimakawa ne kawai. Ƙara ruwa a cikin foda na laka a saka shi a bango, wannan abu ne na sinadarai. Saboda samuwar sabbin abubuwa, ana cire foda na laka da ke kan bango daga bango a niƙa shi zuwa foda, sannan ba zai yiwu ba, saboda an samar da sabbin abubuwa NS. Babban abubuwan da ke cikin foda na calcium mai launin toka sune: 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 ƙarƙashin tasirin ruwa da CO2 a cikin iska, yayin da HPMC ke riƙe ruwa kawai kuma yana taimakawa calcium mai launin toka don samun ingantaccen amsawa. Ba ya shiga cikin kowace amsa.
Hydroxypropyl methyl cellulose yana da amfani iri-iri. A rayuwar yau da kullun, kayayyaki da yawa ba za a iya raba su da tsarin ƙera su ba. Sannan, a cikin masana'antu daban-daban, menene tasirin hydroxypropyl methylcellulose, zan yi muku bayani, don ku iya hana amfani da shi ba daidai ba yayin da kuke samun ilimi.
Da farko dai, a masana'antar gine-gine, ana iya ɗaukarsa a matsayin abin hana ruwa da kuma mai riƙe ruwa. Turmin turmi yana da sauƙin yin famfo, don haka duk busasshen turmi da muke amfani da shi yana da nasa hannun. Bugu da ƙari, a cikin kayan gini kamar gypsum mai ɗanye, filasta, da foda mai laka, ana iya amfani da shi azaman abin ɗaurewa, wanda ba wai kawai yana tsawaita lokacin aiki ba, har ma yana sa fenti ya zama mai laushi. A cikin marmara, tayal ɗin yumbu mai manne, kayan ado na filastik na ƙwayoyin halitta, ana iya amfani da shi azaman abin haɓaka mannewa, da sauransu. Ana iya cewa hydroxypropyl methyl cellulose shine mafi shahara saboda sauƙin amfani da shi a cikin kayan gini.
A wasu masana'antu, kamar kera faranti da tukwane, ana iya amfani da shi azaman manne don ƙera kayayyakin faranti da tukwane; a cikin masana'antar lacquer da buga tawada, ana iya amfani da shi azaman foda mai laushi, mai kauri, mai daidaita, kuma koda kuwa ana iya haɗa shi da sinadarai na halitta ko kuma ruwan da ke haɗuwa da kyau, kuma ana iya amfani da shi azaman mai cire fenti a cikin ƙera robobi masu haɗa ƙwayoyin halitta, da kuma masu laushi, wakilan sakin mold, man shafawa, da sauransu; a cikin kera polyvinyl chloride, ana ɗaukarsa azaman foda mai laushi.
Ana amfani da kayayyakin da aka yi da hydroxypropyl methylcellulose sosai a fannin 'ya'yan itatuwa da kayan lambu, magunguna, fatar dabbobi da masana'antar yadi. Yana da aminci kuma ba ya da guba, ba ya daɗa wa mucous membranes da fata haushi a jikin ɗan adam, kuma ana iya amfani da shi a matsayin ƙarin abinci. Duk da haka, a ainihin yanayin da lamarin yake, ƙurar sa na iya haifar da gurɓataccen iska, kuma ba shi da amfani ga kula da fata don ware ta daga wuta don guje wa fashewa.
riƙe ruwa
Musamman hydroxypropyl methylcellulose don gini yana guje wa yawan amfani da ruwa ta hanyar substrate, kuma ya kamata a ajiye ruwan a cikin siminti gwargwadon iko a lokacin da aka saita gypsum ɗin gaba ɗaya. Wannan sinadari na musamman ana kiransa riƙe ruwa kuma yana daidai gwargwado kai tsaye da ɗanko na maganin hydroxypropyl methylcellulose da ake amfani da shi don gini a cikin simintin. Girman ɗanko na maganin, haka nan ƙwarewar riƙe ruwa take ƙaruwa.
Hana yin kasala
Ana iya shafa turmi mai siffofi na musamman na hana tsagewa da wani kauri mai kauri ba tare da tsagewa ba, wanda hakan ke nufin cewa turmi da kansa ba ya canza jinsinsa, in ba haka ba zai zame ƙasa lokacin da aka fara ginin.
Rage danko da kuma sauƙaƙe gini
Bayan ƙara nau'ikan samfuran hydroxypropyl methylcellulose na musamman na gini, ana iya samar da filastar gypsum kore mai ɗan ƙauri. Idan aka ga ya dace kuma aka yi amfani da ƙarancin ƙauri na hydroxypropyl methylcellulose na musamman na gini, matakin ƙauri yana raguwa kaɗan kuma ginin yana zama mai sauƙi. Duk da haka, riƙe ruwa na hydroxypropyl methylcellulose don gina ƙarancin ƙauri yana da rauni kaɗan, kuma yana da mahimmanci a ƙara yawan ƙari.
Matsakaicin daidaiton filastik
Idan aka samu turmi busasshe mai inganci, ya fi araha a samar da turmi mai jika fiye da kima, wanda za a iya samu ta hanyar ƙara ruwa da kumfa kaɗan. Amma, idan yawan ruwa da kumfa sun yi tsayi sosai, ƙarfin zai ragu.
Lokacin Saƙo: Afrilu-26-2024