1. Menene babban amfani dahydroxypropyl methylcellulose (HPMC)?
Ana amfani da Hydroxypropyl methylcellulose sosai a fannin kayan gini, fenti, resin roba, yumbu, magani, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba Hydroxypropyl methylcellulose zuwa matakin gini, matakin abinci da kuma matakin magunguna bisa ga aikace-aikacensa. 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 da manne na siminti.
2. Akwai nau'ikan hydroxypropyl methylcellulose (HPMC) da dama, kuma menene bambance-bambancen amfani da su?
Ana iya raba HPMC zuwa nau'in nan take da nau'in narkewa mai zafi. Samfuran nan take suna watsuwa da sauri lokacin da suka haɗu da ruwan sanyi suka ɓace cikin ruwa. A wannan lokacin, ruwan ba shi da ɗanko saboda HPMC yana warwatse ne kawai a cikin ruwa ba tare da narkewa na gaske ba. Bayan kimanin mintuna 2, ɗankowar ruwan yana ƙaruwa a hankali, yana samar da colloid mai haske. Samfuran mai zafi, idan aka haɗu da ruwan sanyi, za su iya watsuwa da sauri a cikin ruwan zafi kuma su ɓace a cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki, ɗankowar zai bayyana a hankali har sai ya samar da colloid mai haske. Ana iya amfani da nau'in mai zafi-narkewa ne kawai a cikin foda da turmi. A cikin manne da fenti na ruwa, za a sami wani abu na rukuni kuma ba za a iya amfani da shi ba. Nau'in nan take yana da fa'idodi da yawa. Ana iya amfani da shi a cikin foda da turmi na putty, da kuma manne da fenti na ruwa, ba tare da wani dalili ba.
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 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) A zuba 1/3 ko 2/3 na adadin ruwan da ake buƙata a cikin akwati, sannan a dumama shi zuwa 70°C, bisa ga hanyar 1), a watsa HPMC don shirya ruwan zafi; sannan a ƙara sauran ruwan sanyi a cikin ruwan zafi, sai a sanyaya hadin 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, za ta narke nan da nan lokacin da ta taɓa ruwa. ——Masana'antun foda na Putty da turmi suna amfani da wannan hanyar. [Ana amfani da Hydroxypropyl methylcellulose (HPMC) a matsayin mai kauri da kuma mai 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, raga 120 ya yi ƙasa da haka, kuma yawancin HPMC da ake samarwa a Hebei shine raga 80. Ingancin ingancin, gabaɗaya, shine mafi kyau.
(3) Watsawa: Sanya hydroxypropyl methylcellulose (HPMC) a cikin ruwa don samar da colloid mai haske, sannan a duba watsawa. Girman watsawa, mafi kyau, yana nuna cewa akwai ƙarancin narkewa a cikinsa. Fuskar masu amsawa a tsaye gabaɗaya tana da kyau, kuma na masu amsawa a kwance ya fi muni, amma ba yana nufin cewa ingancin masu amsawa a tsaye ya fi na masu amsawa a 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. Nawa ne adadin hydroxypropyl methylcellulose (HPMC) a cikin foda na putty?
Adadin HPMC da ake amfani da shi a aikace ya bambanta dangane da yanayi, zafin jiki, ingancin sinadarin calcium na gida, dabarar foda putty da "ingancin da abokan ciniki ke buƙata". Gabaɗaya, tsakanin kilogiram 4 zuwa 5. Misali: yawancin foda putty a Beijing kilogiram 5 ne; yawancin foda putty a Guizhou kilogiram 5 ne a lokacin rani da kilogiram 4.5 a lokacin hunturu; adadin foda putty a Yunnan ƙarami ne, gabaɗaya kilogiram 3 zuwa 4, da sauransu.
6. Menene dacewar danko na hydroxypropyl methylcellulose (HPMC)?
Fulawar putty gabaɗaya ta isa yuan 100,000, kuma buƙatun turmi sun fi yawa, 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 da yawa ba.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?
Yawancin masu amfani da sinadarin Hydroxypropyl da kuma danko, suna damuwa da waɗannan alamomi guda biyu. Waɗanda ke da sinadarin hydroxypropyl mai yawa galibi suna da ingantaccen riƙe ruwa. Wanda ke da ɗanko mai yawa yana da ingantaccen riƙe ruwa, idan aka kwatanta da (ba gaba ɗaya ba), kuma wanda ke da ɗanko mai yawa ya fi kyau a yi amfani da shi a cikin turmi na siminti.
8. Menene manyan kayan da ake amfani da su a cikinhydroxypropyl 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 amfani da HPMC a cikin foda na putty, kuma shin yana faruwa ne ta hanyar sinadarai?
A cikin foda na putty, HPMC tana taka rawa guda uku na kauri, riƙe ruwa da ginawa. Kauri: Ana iya ƙara cellulose don dakatarwa da kuma kiyaye maganin iri ɗaya sama da ƙasa, da kuma tsayayya da yin kasa. Rike ruwa: sa foda na putty ya bushe a hankali, kuma yana taimaka wa tokar calcium ta mayar da martani ƙarƙashin aikin ruwa. Ginawa: Cellulose yana da tasirin shafawa, wanda zai iya sa foda na putty ya sami kyakkyawan tsari. HPMC ba ya shiga cikin duk wani halayen sinadarai, amma yana taka rawa kawai. Ƙara ruwa a cikin foda na putty da sanya shi a bango martani ne na sinadarai, saboda ana samar da sabbin abubuwa. Idan ka cire foda na putty a bango daga bango, ka niƙa shi zuwa foda, 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 ionizes don samar da ions masu motsi kyauta (Na+) waɗanda ke da positive da ions masu chloride (Cl) waɗanda ke da charged korau. Wato, lokacin daHPMCAn sanya shi a cikin ruwa, ba zai rabu zuwa ions masu caji ba, amma yana wanzuwa a cikin nau'in ƙwayoyin halitta.
Lokacin Saƙo: Afrilu-28-2024