1. Menene babban amfani dahydroxypropyl methylcellulose (HPMC)?
Ana amfani da HPMC sosai a fannin kayan gini, fenti, resin roba, yumbu, magani, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba HPMC zuwa matakin gini, matakin abinci da kuma matakin magunguna bisa ga manufar. A halin yanzu, yawancin kayayyakin gida suna da matakin gini. A fannin gini, ana amfani da foda putty sosai, kusan kashi 90% ana amfani da shi don foda putty, sauran kuma ana amfani da shi don turmi na siminti.
2. Menene ƙamshin hydroxypropyl methylcellulose (HPMC)?
HPMC da aka samar ta hanyar narkewar abinci yana amfani da toluene da isopropanol a matsayin masu narkewa. Idan wankewar ba ta da kyau sosai, za a sami ɗan ƙamshi.
3. Waɗanne hanyoyi ne ake amfani da su wajen narkar da hydroxypropyl methylcellulose (HPMC)?
Hanyar narkar da ruwan zafi: Tunda HPMC ba ya narkarwa a cikin ruwan zafi, ana iya watsa HPMC daidai gwargwado a cikin ruwan zafi a matakin farko, sannan a narkar da shi da sauri idan ya sanyaya. An bayyana hanyoyi guda biyu na yau da kullun kamar haka:
1) A zuba ruwan zafi da ake buƙata a cikin akwati a dumama shi zuwa kimanin digiri 70 na Celsius. A hankali a zuba hydroxypropyl methylcellulose a hankali a hankali a juya shi, da farko HPMC ta yi iyo a saman ruwan, sannan a hankali ta samar da wani sinadari mai laushi, wanda aka sanyaya a lokacin da ake juyawa.
2), ƙara 1/3 ko 2/3 na adadin ruwan da ake buƙata a cikin akwati, sannan a dumama shi zuwa 70°C, a watsa HPMC bisa ga hanyar 1), sannan a shirya ruwan zafi; sannan a ƙara sauran ruwan sanyi a cikin ruwan zafi, an sanyaya cakuda bayan an juya.
Hanyar haɗa foda: a haɗa foda na HPMC da adadi mai yawa na sauran abubuwa masu ƙura, a haɗa sosai da mahaɗi, sannan a ƙara ruwa don narkewa, sannan a iya narkar da HPMC a wannan lokacin ba tare da haɗa shi ba, saboda akwai ƙaramin HPMC kawai a cikin kowace ƙaramin kusurwa Foda, zai narke nan da nan lokacin da ya taɓa ruwa. ——Masana'antun foda na Putty da turmi suna amfani da wannan hanyar. [Ana amfani da Hydroxypropyl methylcellulose (HPMC) azaman mai kauri da kuma wakilin riƙe ruwa a cikin turmi na putty. ]
4. Ta yaya za a tantance ingancin hydroxypropyl methylcellulose (HPMC) cikin sauƙi da fahimta?
(1) Fari: Duk da cewa farin ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan aka ƙara sinadaran yin fari yayin aikin samarwa, zai shafi ingancinsa. Duk da haka, yawancin samfuran masu kyau suna da kyakkyawan fari.
(2) Inganci: Ingancin HPMC gabaɗaya yana da raga 80 da raga 100, kuma raga 120 ƙasa da haka. Yawancin HPMC da ake samarwa a Hebei raga 80 ne. Ingancin ingancin, gabaɗaya, mafi kyau.
(3) Watsa haske: sanyahydroxypropyl methylcellulose (HPMC)a cikin ruwa don samar da colloid mai haske, sannan a duba yadda hasken yake watsawa. Girman watsawa ta haske, mafi kyau, yana nuna cewa akwai ƙarancin narkewa a cikinsa. . Fuskar masu amsawa ta tsaye gabaɗaya tana da kyau, kuma na masu amsawa ta kwance ta fi muni, amma ba yana nufin cewa ingancin masu amsawa ta tsaye ya fi na masu amsawa ta kwance kyau ba, kuma ingancin samfurin yana da alaƙa da dalilai da yawa.
(4) Nauyin nauyi na musamman: Girman nauyin nauyi na musamman, mafi nauyi. Takamammen yana da girma, gabaɗaya saboda yawan sinadarin hydroxypropyl a cikinsa yana da yawa, kuma yawan sinadarin hydroxypropyl yana da yawa, riƙe ruwa ya fi kyau.
5. Menene bambanci tsakanin nau'in ruwan sanyi da kuma nau'in hydroxypropyl methylcellulose mai narkewa mai zafi a cikin tsarin samarwa?
Ana yi wa nau'in HPMC mai saurin wargajewa a saman da glyoxal, kuma yana wargajewa da sauri a cikin ruwan sanyi, amma ba ya narkewa da gaske. Yana narkewa ne kawai lokacin da danko ya ƙaru. Nau'in nan take ba shi da maganin saman da glyoxal. Idan adadin glyoxal ya yi yawa, wargajewar zai yi sauri, amma danko zai ƙaru a hankali, kuma idan adadin ya ƙanƙanta, akasin haka zai zama gaskiya.
6. Menene dacewar danko na hydroxypropyl methylcellulose (HPMC)?
Fulawar putty gabaɗaya tana da yuan 100,000, kuma buƙatun turmi sun fi girma, kuma ana buƙatar yuan 150,000 don sauƙin amfani. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri. A cikin foda putty, matuƙar riƙe ruwa yana da kyau kuma ɗanɗanon ya yi ƙasa (70,000-80,000), haka nan yana yiwuwa. Tabbas, mafi girman ɗanɗanon, mafi kyawun riƙe ruwa. Lokacin da ɗanɗanon ya wuce 100,000, ɗanɗanon zai shafi riƙe ruwa. Ba a ƙara yin hakan ba.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?
Yawan sinadarin Hydroxypropyl da kuma danko, yawancin mutane suna damuwa da waɗannan alamomi guda biyu. Waɗanda ke da yawan sinadarin hydroxypropyl gabaɗaya suna da ingantaccen riƙe ruwa. Wanda ke da yawan danko yana da ingantaccen riƙe ruwa, idan aka kwatanta da (ba gaba ɗaya ba), kuma wanda ke da yawan danko ya fi kyau a yi amfani da shi a turmi na siminti.
8. Menene manyan kayan da ake amfani da su wajen samar da sinadarin hydroxypropyl methylcellulose (HPMC)?
Babban kayan da ake amfani da su wajen samar da hydroxypropyl methylcellulose (HPMC): auduga mai tsafta, methyl chloride, propylene oxide, da sauran kayan da ake amfani da su wajen samar da caustic soda, acid, toluene, isopropanol, da sauransu.
9. Menene babban aikin aikace-aikacenHPMCa cikin foda na putty, kuma shin hakan yana faruwa ne ta hanyar sinadarai?
A cikin foda na putty, HPMC tana taka rawa guda uku na kauri, riƙe ruwa da kuma ginawa.
Kauri: Ana iya ƙara kauri a cellulose don a dakatar da shi sannan a ci gaba da daidaita ruwan sama da ƙasa, sannan a hana yin kasa.
Rike ruwa: sa foda na putty ya bushe a hankali, kuma taimaka wa tokar calcium ta mayar da martani a ƙarƙashin aikin ruwa.
Ginawa: Cellulose yana da tasirin shafawa, wanda zai iya sa foda putty ya yi kyau.
Ƙara ruwa a cikin foda na putty da kuma sanya shi a bango wani abu ne da ke haifar da sinadarai, domin ana samun sabbin abubuwa. Idan ka cire foda na putty da ke kan bango daga bango, ka niƙa shi ya zama foda, sannan ka sake amfani da shi, ba zai yi aiki ba saboda an samar da sabbin abubuwa (calcium carbonate).
Babban abubuwan da ke cikin foda na ash calcium sune: cakuda Ca(OH)2, CaO2 da ƙaramin adadin CaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Calcium na ash yana cikin ruwa da iska A ƙarƙashin aikin CO2, ana samar da calcium carbonate, yayin da HPMC ke riƙe ruwa kawai, yana taimakawa wajen inganta amsawar ash calcium, kuma baya shiga cikin kowane martani da kansa.
10. HPMC wani sinadari ne na cellulose wanda ba ionic ba, to menene ba ionic ba?
A taƙaice dai, abubuwan da ba ion ba ne ba su da ion a cikin ruwa. Ionization yana nufin tsarin da ake raba electrolyte zuwa ions masu caji waɗanda za su iya motsawa cikin 'yanci a cikin wani takamaiman sinadarin sinadarai (kamar ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da muke ci kowace rana, yana narkewa a cikin ruwa kuma yana yin ionize don samar da ions masu motsi kyauta (Na+) waɗanda ke da caji mai kyau da ions masu chloride (Cl) waɗanda ke da caji mara kyau. Wato, lokacin da aka sanya HPMC a cikin ruwa, ba zai rabu zuwa ions masu caji ba, amma yana wanzuwa a cikin nau'in ƙwayoyin halitta.
11. Menene alaƙar zafin gel na hydroxypropyl methylcellulose da shi?
Zafin gel na HPMC yana da alaƙa da yawan methoxy ɗinsa, ƙarancin yawan methoxy ɗin, mafi girman zafin gel ɗin.
12. Akwai wata alaƙa tsakanin digon foda na putty da HPMC?
Rashin foda na foda yana da alaƙa da ingancin sinadarin ash, kuma ba shi da alaƙa da HPMC. Ƙarancin sinadarin calcium na sinadarin toka da kuma rashin daidaiton CaO da Ca(OH)2 a cikin sinadarin toka zai haifar da asarar foda. Idan yana da alaƙa da HPMC, to idan HPMC ba shi da isasshen riƙe ruwa, zai kuma haifar da asarar foda.
13. Menene bambanci tsakanin nau'in ruwan sanyi da kuma nau'in hydroxypropyl methylcellulose mai narkewa mai zafi a cikin tsarin samarwa?
Nau'in watsawa da sauriHPMCAna yi wa saman magani da glyoxal, kuma yana warwatsewa da sauri a cikin ruwan sanyi, amma ba ya narkewa da gaske. Yana narkewa ne kawai lokacin da danko ya ƙaru. Nau'in nan take ba shi da maganin saman tare da glyoxal. Idan adadin glyoxal ya yi yawa, warwatsewar zai yi sauri, amma danko zai ƙaru a hankali, kuma idan adadin ya ƙanƙanta, akasin haka zai zama gaskiya.
Lokacin Saƙo: Afrilu-25-2024