1. Menene babban aikace-aikacenhydroxypropyl methylcellulose (HPMC)?
Hydroxypropyl methylcellulose ana amfani dashi sosai a cikin kayan gini, sutura, resins na roba, yumbu, magunguna, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu. Hydroxypropyl methylcellulose za a iya raba zuwa ginin sa, abinci sa da kuma Pharmaceutical sa bisa ga aikace-aikace. A halin yanzu, yawancin samfuran cikin gida sune darajar gini. A cikin aikin gine-gine, ana amfani da foda mai yawa da yawa, kimanin kashi 90% ana amfani da foda, sauran kuma ana amfani da turmi da manne.
2. Akwai nau'ikan hydroxypropyl methylcellulose (HPMC) da yawa, kuma menene bambance-bambancen amfaninsu?
Ana iya raba HPMC zuwa nau'in nan take da nau'in rushewar zafi. Nau'in samfuran nan take suna watse da sauri lokacin da suka ci karo da ruwan sanyi kuma su ɓace cikin ruwa. A wannan lokacin, ruwan ba shi da danko saboda HPMC kawai ana tarwatsewa cikin ruwa ba tare da narkar da gaske ba. Bayan kamar minti 2, dankowar ruwa a hankali yana ƙaruwa, yana samar da colloid mai haske. Abubuwan da aka narke mai zafi, lokacin da aka sadu da ruwan sanyi, suna iya watse da sauri cikin ruwan zafi kuma su ɓace cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki, danƙon zai bayyana a hankali har sai ya zama colloid mai haske. Za'a iya amfani da nau'in zafi mai zafi a cikin foda da turmi kawai. A cikin manne mai ruwa da fenti, za a sami al'amuran haɗaka kuma ba za a iya amfani da su ba. Nau'in nan take yana da fa'idar aikace-aikace. Ana iya amfani dashi a cikin foda da turmi, da manne ruwa da fenti, ba tare da wani contraindications ba.
3. Menene hanyoyin rushewar hydroxypropyl methylcellulose (HPMC)?
Hanyar narkar da ruwan zafi: Tun da HPMC ba ta narke cikin ruwan zafi, ana iya tarwatsa HPMC daidai gwargwado a cikin ruwan zafi a matakin farko, sannan kuma da sauri ya narke lokacin da aka sanyaya. Hanyoyi guda biyu na al'ada an bayyana su kamar haka:
1) Sanya adadin ruwan zafi da ake buƙata a cikin akwati kuma yayi zafi zuwa kimanin 70 ° C. A hankali an ƙara hydroxypropyl methylcellulose a ƙarƙashin jinkirin motsawa, da farko HPMC ya yi iyo a saman ruwa, sannan a hankali ya samar da slurry, wanda aka sanyaya a ƙarƙashin motsawa.
2) Ƙara 1/3 ko 2/3 na adadin da ake bukata na ruwa a cikin akwati, kuma zafi shi zuwa 70 ° C, bisa ga hanyar 1), watsa HPMC don shirya ruwan zafi mai zafi; sa'an nan kuma ƙara sauran adadin ruwan sanyi a cikin ruwan zafi mai zafi, an sanyaya cakuda bayan ya motsa.
Yadda ake hada foda: a haxa garin HPMC da sauran abubuwa masu yawa na gari, sai a gauraya sosai da mahautsini, sannan a zuba ruwa ya narke, sannan HPMC za a iya narkar da ita a wannan lokaci ba tare da tabarbarewa ba, domin akwai HPMC kadan a kowane dan kankanin lungu Foda, za ta narke nan da nan idan aka hadu da ruwa. ——Masu kera foda da turmi suna amfani da wannan hanyar. [Hydroxypropyl methylcellulose (HPMC) ana amfani dashi azaman mai kauri da mai riƙe ruwa a cikin turmi foda.]
4. Yadda za a yi hukunci da ingancin hydroxypropyl methylcellulose (HPMC) a sauƙaƙe da fahimta?
(1) Fari: Ko da yake fari ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara abubuwan da ake amfani da su a lokacin aikin samarwa, zai shafi ingancinsa. Duk da haka, yawancin samfurori masu kyau suna da fari mai kyau.
(2) Lalacewa: Mafi kyawun HPMC gabaɗaya yana da raga 80 da raga 100, raga 120 ya ragu, kuma yawancin HPMC da ake samarwa a Hebei shine raga 80. Mafi kyawun ingancin, gabaɗaya magana, mafi kyau.
(3) Watsawa: Sanya hydroxypropyl methylcellulose (HPMC) cikin ruwa don samar da colloid mai haske, kuma a duba yadda yake watsawa. Mafi girman watsawa, mafi kyau, yana nuna cewa akwai ƙarancin rashin narkewa a ciki. The permeability na a tsaye reactors ne gaba ɗaya mai kyau, kuma na kwance reactors ya fi muni, amma ba yana nufin cewa ingancin reactors a tsaye ya fi na kwance reactors, kuma samfurin ingancin da aka ƙaddara da yawa dalilai.
(4) Takamaiman nauyi: Girman ƙayyadaddun nauyi, mafi nauyi mafi kyau. Ƙayyadaddun ƙayyadaddun yana da girma, gabaɗaya saboda abun ciki na ƙungiyar hydroxypropyl a ciki yana da girma, kuma abun ciki na ƙungiyar hydroxypropyl yana da girma, riƙewar ruwa ya fi kyau.
5. Menene adadin hydroxypropyl methylcellulose (HPMC) a cikin sa foda?
Adadin HPMC da aka yi amfani da shi a aikace-aikacen aikace-aikacen ya bambanta dangane da yanayin yanayi, zafin jiki, ingancin ash ash na gida, ma'anar putty foda da "ingancin da abokan ciniki ke buƙata". Kullum magana, tsakanin 4 kg da 5 kg. Misali: mafi yawan foda a birnin Beijing kilogiram 5 ne; yawancin foda a cikin Guizhou shine kilogiram 5 a lokacin rani da 4.5 kg a cikin hunturu; Adadin foda a cikin Yunnan yana da ɗan ƙaramin ƙarfi, gabaɗaya kilogiram 3 zuwa 4 kg, da sauransu.
6. Menene madaidaicin danko na hydroxypropyl methylcellulose (HPMC)?
Matsakaicin foda ya isa 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, wanda ya biyo baya tare da kauri. A cikin foda mai sakawa, idan dai ruwa yana da kyau kuma danko yana da ƙananan (70,000-80,000), yana yiwuwa kuma. Tabbas, mafi girman danko, mafi kyawun riƙewar ruwa. Lokacin da danko ya wuce 100,000, danko zai shafi riƙewar ruwa. Ba yawa kuma.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?
Abun ciki na Hydroxypropyl da danko, yawancin masu amfani sun damu da waɗannan alamomi guda biyu. Wadanda ke da babban abun ciki na hydroxypropyl gabaɗaya suna da mafi kyawun riƙe ruwa. Wanda ke da babban danko yana da mafi kyawun riƙe ruwa, in mun gwada da (ba cikakke ba), kuma wanda ke da ɗanko mai ƙarfi ya fi amfani da turmi siminti.
8. Menene manyan albarkatun kasa nahydroxypropyl methylcellulose (HPMC)?
Babban albarkatun kasa na hydroxypropyl methylcellulose (HPMC): mai ladabi auduga, methyl chloride, propylene oxide, da sauran albarkatun kasa, caustic soda, acid, toluene, isopropanol, da dai sauransu.
9. Menene babban aikin aikace-aikacen HPMC a cikin foda, kuma yana faruwa ta hanyar sinadarai?
A cikin putty foda, HPMC tana taka rawar uku na kauri, riƙe ruwa da gini. Kauri: Za a iya kauri cellulose don dakatarwa da kuma kiyaye maganin daidai sama da ƙasa, da tsayayya da sagging. Riƙewar ruwa: sanya foda ta bushe a hankali, kuma ta taimaka wa ash calcium don amsawa ƙarƙashin aikin ruwa. Gina: Cellulose yana da sakamako mai lubricating, wanda zai iya sa foda na putty yana da kyakkyawan gini. HPMC baya shiga cikin kowane halayen sinadarai, amma yana taka rawar taimako kawai. Ƙara ruwa a cikin foda da kuma sanya shi a kan bango wani nau'i ne na sinadaran, saboda an samar da sababbin abubuwa. Idan ka cire foda a bango daga bangon, ka niƙa shi cikin foda, ka sake amfani da shi, ba zai yi aiki ba saboda an samar da sababbin abubuwa (calcium carbonate). Babban abubuwan da ke cikin ash calcium foda sune: cakuda Ca (OH) 2, Ca O da ƙananan CaCO3, CaO + H2O = Ca (OH) 2-Ca (OH) 2 + CO2 = CaCO3↓ + H2O Ash calcium yana cikin ruwa da iska Karkashin aikin CO2, ana samar da calcium carbonate, yayin da HPMC kawai yana riƙe da ruwa kuma yana taimakawa wajen amsawa.
10. HPMC ba ionic cellulose ether, don haka menene wanda ba ionic?
A cikin ma'anar layman, wadanda ba ions abubuwa ne waɗanda ba sa ionize cikin ruwa. Ionization yana nufin tsarin da ake rarraba electrolyte zuwa ions da aka caje wanda zai iya motsawa cikin yardar kaina a cikin wani ƙayyadadden ƙarfi (kamar ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da muke ci kowace rana, yana narkar da ruwa da ionizes don samar da ions sodium ions (Na+) masu motsi da yardar rai da kuma chloride ions (Cl) waɗanda aka caje su. Wato yausheHPMCan sanya shi a cikin ruwa, ba zai rabu cikin ions da aka caje ba, amma ya kasance a cikin nau'i na kwayoyin.
Lokacin aikawa: Afrilu-28-2024