Low danko HPMC:HPMC 400 ana amfani da yafi amfani da kai matakin turmi, amma gaba ɗaya shigo da.
Dalili: Danko yana da ƙasa, kodayake riƙewar ruwa ba shi da kyau, amma matakin yana da kyau, kuma yawan turmi yana da girma.
Matsakaici da ƙananan danko:hydroxypropyl methylcelluloseHPMC 20000-40000 ne yafi amfani da tayal m, caulking wakili, anti-cracking turmi, thermal rufi bonding turmi, da dai sauransu.
Dalili: kyakkyawan aiki mai kyau, ƙarancin ruwa, ƙarancin turmi mai girma.
1. Menene babban manufar hydroxypropyl methylcellulose (HPMC)?
——A: Ana amfani da HPMC sosai a cikin kayan gini, sutura, resins na roba, yumbu, magunguna, abinci, masaku, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba HPMC zuwa: darajar gini, darajar abinci da kuma darajar magunguna bisa ga manufar. A halin yanzu, yawancin samfuran cikin gida sune darajar gini. A cikin aikin ginin, adadin fulawar da ake amfani da shi yana da girma sosai, ana amfani da kusan kashi 90 cikin 100 na foda, sauran kuma ana amfani da turmi na siminti da manne.
2. Akwai nau'ikan hydroxypropyl methylcellulose (HPMC) da yawa, kuma menene bambancin amfanin su?
——Amsa: Ana iya raba HPMC zuwa nau'in nan take da nau'in narkewar zafi. Irin samfuran nan take suna watsewa da sauri cikin ruwan sanyi kuma su ɓace cikin ruwa. A wannan lokacin, ruwan ba shi da danko, saboda HPMC kawai ana tarwatse a cikin ruwa kuma ba shi da narkar da gaske. Bayan kamar minti 2, dankowar ruwan a hankali ya karu, yana samar da colloid mai haske. Abubuwan da ke narkar da zafi, lokacin saduwa da ruwan sanyi, ana iya tarwatsa su da sauri cikin ruwan zafi, kuma su ɓace cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki (samfurin kamfaninmu shine digiri 65 Celsius), danƙon yana bayyana a hankali har sai ya zama colloid mai ɗanɗano mai haske. Za a iya amfani da nau'in zafi mai zafi a cikin foda da turmi kawai. A cikin manne ruwa da fenti, al'amari mai tauri zai faru kuma ba za a iya amfani da shi ba. Nau'in nan take yana da fa'idar aikace-aikace. Ana iya amfani dashi a cikin foda da turmi, da kuma a cikin manne ruwa da fenti, ba tare da wani contraindications ba.
3. Menene hanyoyin rushewar hydroxypropyl methylcellulose (HPMC)?
——Amsa: Hanyar narkar da ruwan zafi: Tun da HPMC ba a narkar da shi a cikin ruwan zafi, ana iya tarwatsa HPMC daidai gwargwado a cikin ruwan zafi a matakin farko, sannan a narkar da sauri idan an 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. An ƙara hydroxypropyl methylcellulose a hankali tare da motsawa a hankali, da farko HPMC ya yi iyo a saman ruwa, sannan a hankali ya samar da slurry, wanda aka sanyaya tare da motsawa.
2), ƙara 1/3 ko 2/3 na adadin da ake buƙata na ruwa a cikin akwati, kuma zafi shi zuwa 70 ° C, bisa ga hanyar 1), watsa HPMC, shirya ruwan zafi mai zafi; sa'an nan kuma ƙara sauran adadin ruwan sanyi zuwa ruwan zafi A cikin slurry, an sanyaya cakuda bayan an motsa shi.
Yadda ake hada foda: a hada garin HPMC da sauran abubuwan da ake da su, sai a hada su sosai tare da mixer, sannan a zuba ruwa ya narke, sai a narkar da HPMC a wannan lokaci ba tare da dunkule wuri daya ba, domin akwai HPMC kadan a kowanne. ƙaramin ɗan kusurwa. Foda zai narke nan da nan a lamba tare da ruwa. ——Wannan hanyar ana amfani da ita ta hanyar ƙera foda da masu kera turmi. [Hydroxypropyl methylcellulose (HPMC) ana amfani dashi azaman mai kauri da mai riƙe da ruwa a cikin turmi foda mai sakawa. ]
4. Yadda za a yi hukunci da ingancin hydroxypropyl methylcellulose (HPMC) a sauƙaƙe da fahimta?
——Amsa: (1) Fari: Ko da yake fari ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara haske a cikin tsarin samarwa, zai yi tasiri ga ingancinsa. Duk da haka, yawancin samfurori masu kyau suna da fari mai kyau. (2) Lalacewa: Mafi kyawun HPMC gabaɗaya raga 80 ne da raga 100, kuma raga 120 ya ragu. Yawancin HPMC da aka samar a Hebei raga 80 ne. Mafi kyawun inganci, mafi kyau. (3) Watsawa: Saka hydroxypropyl methylcellulose (HPMC) a cikin ruwa don samar da colloid mai haske, kuma a duba yadda yake watsawa. Mafi girman watsawa, mafi kyau, yana nuna cewa akwai ƙananan abubuwa marasa narkewa a ciki. Matsakaicin ma'aunin reactor gabaɗaya yana da kyau, kuma na'urar da ke kwance ya fi muni, amma ba za a iya cewa ingancin injin ɗin ya fi na na'urar da ke kwance ba, kuma akwai abubuwa da yawa da ke tabbatar da ingancin samfurin. (4) Nauyi na musamman: girman ƙayyadaddun nauyi, mafi nauyi mafi kyau. Ƙayyadaddun nauyin nauyi yana da girma, gabaɗaya saboda abun ciki na hydroxypropyl yana da girma, kuma abun ciki na hydroxypropyl yana da girma, riƙewar ruwa ya fi kyau.
5. Adadin hydroxypropyl methylcellulose (HPMC) a cikin putty foda?
——Amsa: Adadin HPMC da aka yi amfani da shi a aikace-aikace masu amfani ya bambanta dangane da yanayin yanayi, zafin jiki, ingancin ash na gida, tsarin sa foda da “ingancin da abokan ciniki ke buƙata”. Yawanci, yana tsakanin 4 kg zuwa 5 kg. Misali, mafi yawan foda a birnin Beijing ya kai kilogiram 5; yawancin foda a cikin Guizhou shine kilogiram 5 a lokacin rani da 4.5 kg a cikin hunturu;
6. Menene madaidaicin danko na hydroxypropyl methylcellulose (HPMC)?
——Amsa: Gaɗaɗɗen foda yana da yuan 100,000, kuma turmi ya fi buƙata, kuma yana da sauƙin amfani akan yuan 150,000. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri ya biyo baya. A cikin foda, idan dai ruwan riƙewar yana da kyau kuma danko yana da ƙasa (70,000-80,000), yana yiwuwa kuma. Tabbas, danko ya fi girma, kuma madaidaicin ruwa ya fi kyau. Lokacin da danko ya wuce 100,000, tasirin danko akan riƙe ruwa ba shi da yawa.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?
——Amsa: abun ciki na Hydroxypropyl da danko, yawancin masu amfani suna kula da waɗannan alamomi guda biyu. Mafi girman abun ciki na hydroxypropyl, mafi kyawun riƙewar ruwa. Babban danko, riƙewar ruwa, in mun gwada (maimakon cikakkar) mafi kyau, kuma babban danko, mafi kyawun amfani da turmi siminti.
8. Menene manyan albarkatun kasa na hydroxypropyl methylcellulose (HPMC)?
-- A: Babban albarkatun kasa na hydroxypropyl methylcellulose (HPMC): auduga mai ladabi, methyl chloride, propylene oxide, sauran albarkatun kasa sun hada da flake alkali, acid, toluene, isopropanol, da dai sauransu.
9. Menene babban aikin HPMC a cikin aikace-aikace na putty foda, kuma akwai wani ilmin sunadarai?
——Amsa: HPMC yana da ayyuka uku na kauri, riƙe ruwa da gini a cikin foda. Kauri: Za a iya kauri cellulose don dakatarwa, kiyaye daidaiton bayani da daidaito, da tsayayya da sagging. Riƙewar ruwa: Sanya foda mai sanya ta bushe a hankali, kuma yana taimakawa amsawar ash calcium ƙarƙashin aikin ruwa. Gina: Cellulose yana da tasirin lubricating, wanda zai iya sa foda na putty yana da kyakkyawan aiki. HPMC ba ya shiga cikin kowane nau'in sinadari kuma yana taka rawar taimako kawai. Ƙara ruwa a cikin foda da kuma sanya shi a kan bango shine halayen sinadaran. Saboda samuwar sabbin abubuwa, sai a dauko foda da ke jikin bango daga bangon, a nika shi ya zama foda, a sake amfani da shi. Ba zai yi aiki ba, saboda an kafa sababbin abubuwa (calcium carbonate). ) sama. Babban abubuwan da ke cikin ash calcium foda sune: cakuda Ca (OH) 2, CaO da ƙaramin adadin CaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium A cikin ruwa da iska Karkashin aikin CO2, ana samar da sinadarin calcium carbonate, yayin da HPMC ke rike da ruwa kawai kuma yana taimakawa mafi kyawun dauki na ash calcium, kuma baya shiga cikin wani dauki da kansa.
10. HPMC ba ionic cellulose ether ba, don haka menene ba ionic ba?
- Amsa: A ma'anar liman, wadanda ba ions abubuwa ne da ba sa ionize a cikin ruwa. Ionization yana nufin tsarin da ake rarraba electrolyte zuwa ions da aka caje kyauta a cikin wani ƙayyadadden ƙarfi (kamar ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da ake ci kowace rana, yana narkar da ruwa da ionizes don samar da ions sodium ions (Na+) masu motsi da yardar rai da ions chloride (Cl) waɗanda ake cajin mara kyau. Wato lokacin da aka sanya HPMC a cikin ruwa, ba ya rabuwa cikin ions da aka caje, amma yana wanzuwa ta hanyar kwayoyin halitta.
Lokacin aikawa: Oktoba-17-2022