ɗaya. Bambanci tsakanin gurbataccen abuhydroxypropyl methylcellulose (HPMC)da kuma tsantsar hydroxypropyl methylcellulose (HPMC)
1. Bayyanar: Tsarkakken hydroxypropyl methylcellulose HPMC yana kama da santsi kuma yana da ƙarancin yawan taro, daga 0.3-0.4g/ml; hydroxypropyl methylcellulose HPMC da aka gurbata yana da ruwa mai kyau kuma yana jin nauyi, kuma akwai babban bambanci a bayyanar da ainihin samfurin.
2. Matsayi: Tsarkakken foda na hydroxypropyl methylcellulose HPMC yana da fibrous a ƙarƙashin na'urar hangen nesa ko gilashin hangen nesa; yayin da gurbataccen hydroxypropyl methylcellulose HPMC za a iya gani a matsayin granular solids ko lu'ulu'u a ƙarƙashin na'urar hangen nesa ko gilashin hangen nesa.
3. Ƙamshi: Tsarkakken hydroxypropyl methylcellulose HPMC ba zai iya jin ƙamshin ammonia, sitaci da barasa ba; hydroxypropyl methylcellulose HPMC da aka gurbata zai iya jin ƙamshi iri-iri, ko da ba shi da ɗanɗano, zai ji nauyi.
4. Maganin ruwa: tsantsar maganin ruwa na hydroxypropyl methylcellulose HPMC yana da haske sosai, yana da sauƙin watsawa, ƙimar riƙe ruwa ≥ 97%; maganin ruwa na hydroxypropyl methylcellulose HPMC da aka gurbata yana da datti, kuma ƙimar riƙe ruwa yana da wuya a kai 80%.
Na biyu, riƙe ruwa na hydroxypropyl methylcellulose HPMC, ya bambanta fa'idodi da rashin amfani:
Rike ruwa na methyl cellulose ether a ƙarƙashin yanayin zafi mai yawa muhimmin alama ne don bambanta ingancin methyl cellulose ether. Abubuwa kamar zafin iska, zafin jiki da saurin matsin iska za su shafi ƙimar raguwar ruwa a cikin turmi na siminti da samfuran da aka yi da gypsum. Saboda haka, a cikin yanayi daban-daban, akwai wasu bambance-bambance a cikin tasirin riƙe ruwa na samfuran tare da adadin HPMC iri ɗaya. A cikin takamaiman ginin, ana iya daidaita tasirin riƙe ruwa na slurry ta hanyar ƙara ko rage adadin da aka ƙara na HPMC. Kyawawan samfuran HPMC na hydroxypropyl methylcellulose na iya magance matsalar riƙe ruwa yadda ya kamata a ƙarƙashin zafin jiki mai yawa.
Ana iya watsa methylcellulose mai inganci daidai gwargwado a cikin turmi na siminti da samfuran gypsum, sannan a naɗe dukkan barbashi masu ƙarfi, sannan a samar da fim ɗin jika, danshi a cikin tushe yana fitowa a hankali na dogon lokaci, kuma rashin tsari. Haɓakar ruwa na kayan gelled yana tabbatar da ƙarfin haɗin gwiwa da ƙarfin matsewa na kayan. hydroxypropyl methylcellulose HPMC mai inganci, daidaitonsa yana da kyau sosai, ƙungiyoyin methoxy da hydroxypropoxy suna rarraba daidai gwargwado tare da sarkar ƙwayoyin cellulose, yana iya ƙara iskar oxygen akan haɗin hydroxyl da ether Ikon atom na haɗawa da ruwa don samar da haɗin hydrogen yana mai da ruwa kyauta zuwa ruwa mai ɗaure, ta haka ne ke sarrafa fitar da ruwa da yanayi mai zafi da kuma cimma riƙe ruwa mai yawa.
Saboda haka, a cikin ginin lokacin zafi mai zafi, domin cimma tasirin riƙe ruwa, ya zama dole a ƙara samfuran HPMC masu inganci a cikin isassun yawa bisa ga dabarar, in ba haka ba, za a sami ƙarancin ruwa, raguwar ƙarfi, tsagewa, rami da zubar da ruwa sakamakon bushewar ruwa mai yawa, amma kuma yana ƙara wahalar gini ga ma'aikata. Yayin da zafin jiki ke raguwa, adadin ruwan da aka ƙara na HPMC za a iya rage shi a hankali, kuma ana iya cimma irin wannan tasirin riƙe ruwa.
3. Narkewar hydroxypropyl methylcellulose HPMC
A masana'antar gine-gine, sau da yawa ana saka hydroxypropyl methylcellulose HPMC a cikin ruwa mai tsaka-tsaki, kuma ana narkar da samfurin HPMC shi kaɗai don tantance yawan narkewar. Bayan an sanya shi a cikin ruwa mai tsaka-tsaki shi kaɗai, samfurin da ke taruwa cikin sauri ba tare da ya wargaje ba samfurin ne ba tare da maganin saman ba; bayan an sanya shi a cikin ruwa mai tsaka-tsaki shi kaɗai, samfurin da zai iya wargajewa kuma ba ya taruwa tare samfurin ne da maganin saman. Lokacin da aka narkar da hydroxypropyl methylcellulose HPMC shi kaɗai, ƙwayarsa ɗaya tana narkewa da sauri kuma tana samar da fim da sauri, wanda ke sa ruwa ba ya shiga wasu ƙwayoyin cuta, wanda ke haifar da taruwa da taruwa, wanda a halin yanzu ake kira narkewa a hankali a cikin samfurin kasuwa.
Barbashin samfurin HPMC da aka yi wa magani da hydroxypropyl methylcellulose, a cikin ruwa mai tsaka-tsaki, ana iya tarwatsa barbashi daban-daban ba tare da haɗuwa ba, amma ɗanɗanon samfurin ba zai tashi nan take ba. Bayan jiƙa na wani lokaci, tsarin sinadaran maganin saman ya lalace, kuma ruwan zai iya narkar da barbashin HPMC. A wannan lokacin, barbashin samfurin sun warwatse gaba ɗaya kuma sun sha isasshen ruwa, don haka samfurin ba zai taruwa ko taruwa ba bayan narkewa. Saurin warwatsewa da saurin warwatsewa sun dogara ne akan matakin maganin saman. Idan maganin saman bai yi yawa ba, saurin warwatsewa yana da jinkiri kuma saurin mannewa yana da sauri; yayin da samfurin da ke da zurfin maganin saman yana da saurin warwatsewa da saurin mannewa. Idan kuna son yin wannan jerin samfuran ya narke da sauri a cikin wannan yanayin, zaku iya zubar da ƙaramin adadin abubuwan alkaline lokacin da suka narke su kaɗai. Kasuwar yanzu galibi ana kiranta da samfuran nan take. Halayen samfuran HPMC da aka yi wa magani da saman sune: a cikin ruwan da aka yi wa magani, barbashin na iya warwatse da juna, suna iya narkewa da sauri a yanayin alkaline, kuma suna narkewa a hankali a yanayin tsaka-tsaki da acidic.
Halayen hydroxypropyl methylcellulose HPMC marasa magani sune: ƙwayar cuta guda ɗaya tana narkewa da sauri a cikin yanayi mai acidic, alkaline, da tsaka tsaki, amma ba zai iya warwatse tsakanin ƙwayoyin cuta a cikin ruwa ba, wanda ke haifar da taruwa da taruwa. A zahiri, bayan warwatsewar jiki na wannan jerin samfuran da ƙwayoyin cuta masu ƙarfi kamar foda na roba, siminti, yashi, da sauransu, ƙimar narkewa tana da sauri sosai, kuma babu taruwa ko taruwa. Lokacin da ya zama dole a narkar da samfuran HPMC daban-daban, ya kamata a yi amfani da wannan jerin samfuran da taka tsantsan, domin zai taruwa kuma ya riƙe tare. Idan ya zama dole a narkar da samfurin HPMC wanda ba a yi masa magani da shi ba daban, yana buƙatar a warwatse shi da ruwan zafi na 95°C, sannan a sanyaya shi don narkewa.
A ainihin aikin samarwa, wannan jerin samfuran galibi suna narkewa bayan an wargaza su da wasu kayan ƙwayoyin cuta masu ƙarfi a ƙarƙashin yanayin alkaline, kuma ƙimar narkewar sa ba ta bambanta da ta samfuran da ba a yi wa magani ba. Hakanan ya dace da amfani da shi a cikin samfuran da aka narkar da su kaɗai, ba tare da yin birgima ko dunƙule ba. Ana iya zaɓar takamaiman samfurin samfurin bisa ga ƙimar narkewar da ginin ya buƙata.
A lokacin aikin gini, ko turmi ne na siminti ko kuma slurry mai tushen gypsum, yawancinsu tsarin alkaline ne, kuma adadin HPMC da aka ƙara ƙanƙanta ne, wanda za a iya rarraba shi daidai tsakanin waɗannan ƙwayoyin. Idan aka ƙara ruwa,HPMCzai narke da sauri.
Lokacin Saƙo: Afrilu-26-2024