HPMC (Hydroxypyl methylcellulose) Shin wani fili mai narkewa ne na ruwa sosai ana amfani dashi sosai a cikin magunguna, abinci, gini, kayan shafawa da sauran masana'antu. HPMC shine sel-roba mai narkewa wanda aka samo ta hanyar siginar sinadarai na ƙwayar halitta, kuma ana amfani dashi azaman Thickenner, mai tsafta, emulsive da m.
Kayan jiki na HPMC
Matsayin MelMC ya fi rikitarwa saboda meltaukar da melting ba a bayyane yake ba kamar yadda na yau da kullun kayan lu'ulu'u ne na yau da kullun. Matsayinsa na narkewarsa ya kamu da tsarin kwayoyin, nauyi na kwayar halitta da kuma ƙungiyoyin metruxypropyl da metyl ƙungiyoyi, don haka zai iya bambanta gwargwadon tsarin HPMC. Gabaɗaya, a matsayin polymer mai narkewa, HPMC ba shi da bayyananniyar ma'ana da kuma sutura ta narke, amma taushi da kuma zubar da su a cikin wasu kewayon yanayi.
Melting aya
Halin Thermal na Drogincelactchpmc ya fi rikitarwa, da kuma halayen lalata yanayin yanayin yanayin yanayin yanayin Hermogrogrimetric (TGA). Daga wallafe-wallafen, ana iya gano cewa kewayon mayaƙen hpmc yana da kusan tsakanin 200°C da 300°C, amma wannan kewayon baya wakiltar ainihin melting na ainihin samfuran HPMC. Daban-daban nau'ikan samfuran HPMC na iya samun maki daban-daban na narkewar da kuma kwanciyar hankali saboda abubuwan da suka dace da abubuwan da ke da nauyi (digiri na musanya), digiri na musanya).
Loweraramin ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta na HPMC: yawanci suna narke ko giya a ƙananan yanayin zafi, kuma yana iya fara pyrolyze ko narke a kusa da 200°C.
Babban kwayoyin nauyi na HPMC: polmc polmrs tare da mafi girman ƙwayoyin cuta na iya buƙatar mafi girma sarkarwa da narkewarsu, kuma yawanci ana fara lalata cikin 250°C da 300°C.
Abubuwa sun shafi batun narkewar HPMC
Weighture nauyi: nauyin kwayar cutar hpmc yana da babban tasiri a kan melting aya. Matsakaicin ƙananan ƙwayoyin cuta yawanci yana nufin ƙarancin narkewar sanyi, yayin da babban nauyin kwayoyin zai iya haifar da mafi girman narke.
Digiri na canzawa: babbar hanyar hydroxypropyl (watau maye gurbin hydroxypropyl a cikin kwayoyin) da kuma digiri na metchypyl a cikin kwayar) na hpmc kuma yana shafar narkewarsa. Gabaɗaya, mafi girman yanayin canji yana haɓaka ƙwayar HPMC kuma yana rage girman ta.
Danshi ciki: A matsayin kayan da ruwa mai narkewa, melting batun hpmc kuma ya shafi abun danshi. HPMC tare da babban danshi na iya yin hydration ko karkatarwa, wanda ya haifar da canji a cikin zafin jiki na therymal.
Dankal mai zafi da bazuwar zazzabi na HPMC
Kodayake HPMC ba ta da tsayayyen mantawa, kwanciyar hankali na therymal shine mai nuna alama mai ma'ana. Dangane da bayanan Hoto (TGA), HPMC yawanci ana fara bazu cikin yawan zafin jiki na 250°C to 300°C. takamaiman yanayin bazararwar bazarar ya dogara da nauyin kwayoyin, digiri na musanyawa da sauran kayan kwalliya na HPMC.
Jiyya na Tsari a Aikace-aikacen HPMC
A cikin aikace-aikace, melting maki da kwanciyar hankali na hpmc suna da matukar muhimmanci. Misali, a cikin masana'antar harhada magunguna, ana amfani da hpmc azaman kayan don capsules, fim ɗin fim, da masu ɗauka don magungunan saki. A cikin waɗannan aikace-aikacen, kwanciyar hankali na thermc na HPMC na buƙatar haɗuwa da bukatun yawan zafin jiki, don haka fahimtar halayen hpmc na HPMC yana da mahimmanci don sarrafa tsarin samarwa.
A cikin Filin Ginin gini, Drincellmchpmc yawanci ana amfani da shi azaman thickenner a cikin bushe bushe. A cikin waɗannan aikace-aikacen, Dalagar da thermal na HPMAC kuma yana buƙatar kasancewa cikin wani yanki don tabbatar da cewa ba ya lalata yayin ginin.
HpmC, a matsayin abu mai polymer, bashi da madaidaitan wurin kwaikwayon Melying, amma yana nuna halaye masu laushi da kuma pyrolysis tsakanin wasu kewayon yanayi. Matsayinsa na narke yana tsakanin 200°C da 300°C, da takamaiman wurin narkewa ya dogara da abubuwan da ake amfani dasu kamar nauyi na kwayar halitta, digiri na hydroxypropylation, mataki na methylation, da danshi na HPMC. A cikin yanayin aikace-aikace daban daban, fahimtar waɗannan kaddarorin da ke da mahimmanci don shirye-shiryenta da amfani.
Lokaci: Jan-04-2025