Ƙananan danko: 400 galibi ana amfani da shi don turmi mai daidaita kai, amma gabaɗaya ana shigo da shi.
Dalili: Ƙananan danko, rashin riƙe ruwa, amma kyawawan kaddarorin daidaitawa, yawan turmi mai yawa.
Matsakaici da ƙananan danko: 20000-40000 galibi ana amfani dashi don manne tayal, wakili mai caulking, turmi mai hana fashewar turmi, turmi mai rufin ɗamara, da sauransu.
Dalilai: Kyakkyawan aiki, ƙarancin ƙara ruwa, da yawan turmi mai yawa.
1. Menene babban amfanin 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 amfani. A halin yanzu, yawancin kayayyakin cikin gida sune darajar gini. A cikin aikin gine-gine, ana amfani da foda mai yawa da yawa, kimanin kashi 90% ana amfani da shi don yin amfani da foda, sauran kuma ana amfani da turmi na siminti da manne.
2. Nawa nau'ikan hydroxypropyl methylcellulose (HPMC) suke akwai? Menene amfanin su?
——A: Ana iya raba HPMC zuwa nau’in nan take da narke mai zafi. Samfuran nan take suna watsewa da sauri cikin ruwan sanyi kuma su ɓace cikin ruwa. Ruwan ba shi da danko a wannan lokacin saboda HPMC tana tarwatsewa ne kawai a cikin ruwa kuma ba ta narkar da gaske. Bayan kamar minti 2, dankowar ruwa a hankali yana ƙaruwa kuma an sami colloid mai haske. Abubuwan da za su iya narkewa da sauri suna iya watsewa cikin ruwan zafi da sauri kuma su ɓace cikin ruwan zafi lokacin saduwa da ruwan sanyi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki (samfurin kamfaninmu shine 65 digiri Celsius), danko yana bayyana a hankali har sai an sami colloid mai haske. Za'a iya amfani da nau'in narke mai zafi kawai don foda da turmi. A cikin manne ruwa da fenti, clumping zai faru kuma ba za a iya amfani da shi ba. Nau'in nan take yana da fa'idar aikace-aikace. Ana iya amfani da shi don putty foda, turmi, manne ruwa, da fenti ba tare da wani contraindications ba.
3. Menene hanyoyin narkewa na hydroxypropyl methylcellulose (HPMC)?
——Amsa: Hanyar narkar da ruwan zafi: Tun da HPMC ba shi da narkewa a cikin ruwan zafi, ana iya tarwatsa HPMC daidai a cikin ruwan zafi a matakin farko kuma ya narke da sauri bayan sanyaya. Hanyoyi guda biyu na al'ada an bayyana su a ƙasa:
1) Sanya adadin ruwan zafi da ake buƙata a cikin akwati kuma yayi zafi zuwa kusan 70 ℃. A hankali ƙara hydroxypropyl methylcellulose tare da sannu a hankali. Da farko HPMC yana yawo a saman ruwa, sannan a hankali ya samar da slurry, kuma yana sanyaya tare da motsawa.
2). Ƙara 1/3 ko 2/3 na adadin da ake buƙata na ruwa a cikin akwati, zafi shi zuwa 70 ° C, watsar da HPMC bisa ga hanyar a cikin 1), da kuma shirya ruwan zafi mai zafi; sannan a saka sauran adadin ruwan sanyi a cikin slurry na ruwan zafi. slurry a cikin ruwa, motsawa kuma kwantar da cakuda.
Hanyar hada foda: Mix HPMC foda tare da adadi mai yawa na sauran abubuwan foda, a haɗa su sosai tare da blender, sa'an nan kuma ƙara ruwa don narkewa. A wannan lokacin, HPMC na iya narkar da ita kuma ba za ta dunkule tare ba, domin akwai 'yan kadan na HPMC a kowane bangare. Ƙananan kusurwa. Foda ya narke nan da nan bayan haɗuwa da ruwa. ——Masu kera foda da turmi sun yi amfani da wannan hanyar. Ana amfani da Hydroxypropyl methylcellulose (HPMC) azaman mai kauri da mai riƙe da ruwa a cikin turmi foda.
4. Yadda za a yi hukunci da ingancin hydroxypropyl methylcellulose (HPMC) a sauƙaƙe da fahimta?
——Amsa: (1) Fari: Ko da yake fari ba ya tabbatar da ko HPMC yana da sauƙin amfani, idan aka ƙara haske yayin aikin samarwa, zai yi tasiri ga ingancinsa. Duk da haka, yawancin samfurori masu kyau suna da farin ciki mai kyau. (2) Lalacewa: Mafi kyawun HPMC gabaɗaya raga 80 ne da raga 100, tare da raga 120 ƙasa da haka. Yawancin HPMC da aka samar a Hebei raga 80 ne. Mafi kyawun mafi kyau shine mafi kyau. (3) Canja wurin haske: Sanya hydroxypropyl methylcellulose (HPMC) cikin ruwa don samar da colloid mai haske, kuma duba haskensa. Mafi girman watsawar haske, mafi kyau, yana nuna cewa akwai ƙananan abubuwa marasa narkewa a ciki. Matsakaicin iskar da ake yi a tsaye ya fi na na'urorin da ke kwance, amma ba za a iya cewa ingancin na'urorin da ke tsaye ya fi na na'urorin da ke kwance ba. Akwai dalilai da yawa waɗanda ke ƙayyade ingancin samfur. (4) Takamaiman nauyi: Girman takamaiman nauyi da nauyi, mafi kyau. Ƙayyadaddun nauyin nauyi gabaɗaya shine saboda babban abun ciki na hydroxypropyl. Mafi girman abun ciki na hydroxypropyl, mafi kyawun riƙewar ruwa.
5. Mene ne sashi na hydroxypropyl methylcellulose (HPMC) a cikin sa foda?
——Amsa: Matsakaicin adadin HPMC a ainihin aikace-aikacen ya bambanta dangane da yanayin yanayi, zazzabi, ingancin ash na gida, da tsarin shigarwa. ty foda da "abokin ciniki-bukatar ingancin". Yawanci, yana tsakanin 4kg da 5kg. Misali, mafi yawan foda a birnin Beijing yana da kilogiram 5; Mafi yawan foda a Guizhou shine kilogiram 5 a lokacin rani da 4.5 kg a cikin hunturu;
6. Menene madaidaicin danko na hydroxypropyl methylcellulose (HPMC)?
——Amsa: Kullun foda mai ɗorewa yana kashe yuan 100,000, kuma turmi yana buƙatar ƙari, don haka yuan 150,000 ya isa. Kuma mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri ya biyo baya. A cikin foda, idan dai yana da kyakkyawar riƙewar ruwa da ƙananan danko (70,000-80,000), ba shi da kyau. Tabbas, mafi girman danko, mafi kyawun riƙewar ruwa. Lokacin da danko ya wuce 100,000, danko yana da ɗan tasiri akan riƙe ruwa.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?
——A: abun ciki na Hydroxypropyl da danko, yawancin masu amfani sun damu da waɗannan alamomi guda biyu. Mafi girman abun ciki na hydroxypropyl, mafi kyawun riƙewar ruwa. Tare da babban danko, riƙewar ruwa yana da inganci (ba cikakke ba) mafi kyau, kuma tare da babban danko, yana da kyau a yi amfani da shi a cikin 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 caustic soda, acid, toluene, isopropyl barasa, da dai sauransu.
9. Menene babban aikin HPMC a cikin aikace-aikace na putty foda? Shin yana da wani tasiri na sinadarai?
——Amsa: HPMC yana da manyan ayyuka guda uku na kauri, riƙe ruwa da gini a cikin foda. Kauri: Cellulose na iya yin kauri daga dakatarwa, kiyaye daidaiton bayani kuma ya ƙi sagging. Riƙewar ruwa: Sanya foda ta bushe sannu a hankali kuma taimaka amsawar calcium mai launin toka ƙarƙashin aikin ruwa. Gina: Cellulose yana da sakamako mai lubricating kuma zai iya sa foda mai sa ya sami kyakkyawan aiki. HPMC baya shiga cikin kowane halayen sinadarai kuma yana taka rawar taimako kawai. Lokacin da aka saka foda a cikin ruwa kuma a shafa a bango, wani sinadari zai faru. Yayin da aka samar da wani sabon abu, an cire foda a bangon daga bangon da ƙasa a cikin foda kafin amfani. Wannan baya aiki saboda an samu sabon abu (calcium carbonate). ) sama. Babban abubuwan da ke cikin foda mai launin toka sune: cakuda Ca (OH) 2, CaO da ƙaramin adadin CaCO3, CaO + H2O = Ca (OH) 2 -Ca (OH) 2 + CO2 = CaCO3↓+ H2O Gray calcium narkar da ruwa da iska CO2 Karkashin aikin calcium carbonate, HPMC kawai tana riƙe da ruwa kuma yana taimaka wa alli mai launin toka don amsa mafi kyau, kuma baya shiga cikin kowane hali da kanta.
10. HPMC ba ionic cellulose ether ba, to menene wanda ba na ionic ba?
A: A cikin sharuddan layman, wadanda ba ions abubuwa ne da ba sa ionize cikin ruwa. Ionization shine tsarin da electrolytes ke rabuwa cikin ions masu caji cikin yardar rai a cikin wasu kaushi (misali, ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da ake cinyewa kowace rana, yana narkar da ruwa da ionizes, yana samar da wayar hannu kyauta ga ion sodium ions (Na+) da cajin ion chloride mara kyau (Cl). 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: Fabrairu-06-2024