1, menene babban amfani da hydroxypropyl methyl cellulose (HPMC)?
Ana amfani da HPMC sosai a cikin kayan gini, sutura, resins na roba, yumbu, magunguna, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba HPMC zuwa: ƙimar gini, ƙimar abinci da ƙimar likita ta amfani. A halin yanzu, mafi yawan saitin ginin gida, a cikin aji na gida, petty very foda yana da girma, kusan 90% ana amfani dashi don yin ciyawar turmi da manne.
2, hydroxypropyl methyl cellulose (HPMC) ya kasu kashi da dama, menene bambancin amfaninsa?
Ana iya raba HPMC zuwa nau'in maganin gaggawa da zafi, samfuran nan take, a cikin ruwan sanyi da sauri su watse, a bace a cikin ruwa, a wannan lokacin ruwan ba shi da danko, saboda HPMC kawai ya tarwatse a cikin ruwa, babu narkar da gaske. Kusan mintuna 2, dankowar ruwa yana ƙaruwa sannu a hankali, yana samar da colloid mai haske. Hot soluble kayayyakin, a cikin ruwan sanyi, za a iya da sauri tarwatsa a cikin ruwan zafi, bace a cikin ruwan zafi, lokacin da zazzabi saukad zuwa wani zazzabi (mu samfurin ne 65 digiri Celsius), danko a hankali ya bayyana, har sai da samuwar m viscous colloid. Za a iya amfani da maganin zafi kawai a cikin putty foda da turmi, a cikin manne ruwa da fenti, za a yi wani sabon abu na rukuni, ba za a iya amfani da shi ba. MISALIN MAGANIN NAN GASKIYA, YAWAN APPLICATION DIN YA FI FAƊI, IN GUDUWAR FADA DA TUMI, KUMA A CIKIN RUWAN GINDI DA RUFE, DUK ANA IYA AMFANI, BA TARE DA HANNU BA.
3, hydroxypropyl methyl cellulose (HPMC) hanyoyin solubility suna da waɗancan?
– A: Hanyar narkar da ruwan zafi: Saboda ba a narkar da HPMC a cikin ruwan zafi, don haka ana iya watsewar farko na HPMC a cikin ruwan zafi, sannan a narkar da shi da sauri idan an sanyaya, ana bayyana hanyoyi guda biyu kamar haka:
1) Sanya adadin ruwan zafi da ake buƙata a cikin akwati kuma yayi zafi zuwa kusan 70 ℃. A hankali ƙara hydroxypropyl methylcellulose a ƙarƙashin jinkirin motsawa, HPMC ya fara iyo a saman ruwa, sannan a hankali ya samar da slurry, a ƙarƙashin motsa jiki yana sanyaya slurry.
2), ƙara da ake bukata adadin 1/3 ko 2/3 ruwa a cikin akwati, da zafi zuwa 70 ℃, bisa ga Hanyar 1), HPMC watsawa, shiri na ruwan zafi slurry; Sa'an nan kuma ƙara sauran adadin ruwan sanyi zuwa ga slurry mai zafi, motsawa kuma kwantar da cakuda.
Yadda ake hada foda: garin HPMC da sauran sinadarai masu yawa, sai a hada su sosai da blender, bayan an zuba ruwa a narkar da shi, sai HPMC na iya narkewa a wannan lokaci, amma ba hadin kai ba, domin kowane lungu da sako, sai dan HPMC. , nan da nan ruwa zai narke. - Putty foda da masana'antun samar da turmi suna amfani da wannan hanyar. Ana amfani da Hydroxypropyl methyl cellulose (HPMC) azaman wakili mai kauri da wakili mai riƙe da ruwa a cikin turmi foda.
4, ta yaya mai sauƙi da fahimta don ƙayyade ingancin hydroxypropyl methyl cellulose (HPMC)?
– Amsa: (1) fari: ko da yake fari ba zai iya tantance ko HPMC yana da kyau a yi amfani da shi ba, kuma idan an ƙara shi a cikin tsarin samar da whitening, zai shafi ingancinsa. Duk da haka, samfurori masu kyau sun fi yawa fari. (2) fineness: HPMC fineness kullum 80 raga da 100 raga, 120 kasa manufa, Hebei HPMC mafi yawa 80 raga, mafi kyaun da fineness, kullum mafi kyau. (3) watsawa: hydroxypropyl methyl cellulose (HPMC) a cikin ruwa, samuwar colloid mai haske, ganin watsawa, mafi girma da watsawa, mafi kyau, ƙananan kayan da ba a iya narkewa a ciki. The permeability na a tsaye reactor ne kullum mai kyau, a kwance reactor ne mafi muni, amma ba zai iya nuna cewa ingancin da a tsaye reactor samar ne mafi alhẽri daga na kwance reactor samar, samfurin ingancin ne m da yawa dalilai. (4) ƙayyadaddun nauyi: mafi girman ƙayyadaddun nauyi, mafi nauyi mafi kyau. Fiye da mahimmanci, gabaɗaya saboda abun ciki na hydroxypropyl yana da girma, abun ciki na hydroxypropyl yana da girma, sannan riƙewar ruwa ya fi kyau.
5, hydroxypropyl methyl cellulose (HPMC) a cikin adadin putty foda?
- Amsa: HPMC a cikin ainihin aikace-aikacen sashi, ta yanayin yanayi, zafin jiki, ingancin ash ash na gida, ma'aunin foda na putty da "bukatun abokin ciniki na inganci", kuma akwai daban-daban. Gabaɗaya magana, tsakanin kilogiram huɗu zuwa biyar. Misali: Peking putty foda, yawanci sanya 5 kg; A Guizhou, yawancinsu suna da kilogiram 5 a lokacin rani da 4.5 kg a cikin hunturu. Yawan Yunnan kadan ne, gabaɗaya kilogiram 3 -4 da sauransu.
6, hydroxypropyl methyl cellulose (HPMC) nawa danko ya dace?
– Amsa: A gundura da YARA foda JANAR DUBU 100 Ok, BUKATAR A TUMI YA WUCE, SON KYAU DUBU 150 AYI AMFANI. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri ya biyo baya. A cikin putty foda, idan dai ruwa mai kyau yana da kyau, danko yana da ƙananan (7-80 dubu), kuma yana yiwuwa, ba shakka, danko ya fi girma, haɗin ruwan dangi ya fi kyau, lokacin da danko ya fi girma. 100 dubu, danko yana da ɗan tasiri akan riƙewar ruwa.
7, hydroxypropyl methyl cellulose (HPMC) menene manyan alamun fasaha?
A: Hydroxypropyl abun ciki da danko, wanda shine abin da yawancin masu amfani ke damuwa akai. Abun cikin hydroxypropyl yana da girma, riƙe ruwa gabaɗaya ya fi kyau. Danko, riƙewar ruwa, dangi (amma ba cikakke ba) kuma mafi kyau, kuma danko, a cikin turmi siminti mafi kyau amfani da wasu.
8, hydroxypropyl methyl cellulose (HPMC) babban albarkatun kasa menene?
– Amsa: hydroxypropyl methyl cellulose (HPMC) na manyan albarkatun kasa: mai ladabi auduga, chloromethane, propylene oxide, sauran albarkatun kasa da, kwamfutar hannu alkali, acid, toluene, isopropyl barasa, da dai sauransu.
9, HPMC a cikin aikace-aikace na putty foda, menene babban aikin, ko sunadarai?
HPMC a cikin sa foda, kauri, riƙe ruwa da gina ayyuka uku. Thicking: Cellulose za a iya kauri don taka dakatar, sabõda haka, da mafita don kula da uniform sama da ƙasa guda rawa, anti kwarara rataye. Riƙewar ruwa: sanya foda ta bushe a hankali, ƙarar ash calcium dauki a ƙarƙashin aikin ruwa. Gina: Cellulose yana da sakamako mai lubricating, zai iya sa putty foda yana da kyakkyawan gini. HPMC baya shiga cikin kowane halayen sinadarai, kawai yana taka rawar taimako. Ruwan da aka saka a jikin bango, ana samun sinadarin sinadaran ne, domin akwai samar da sabon abu, powder a jikin bangon da ke gangarowa daga bangon, a nika shi da foda, sannan a yi amfani da shi, ba a yanzu, domin ya samu sabon abu (calcium carbonate). Babban abubuwan da ke cikin foda mai launin toka sune: Ca (OH) 2, CaO da ƙaramin adadin CaCO3 cakuda, CaO + H2O = Ca (OH) 2 - Ca (OH) 2 + CO2 = CaCO3↓ + H2O calcium ash a cikin ruwa da kuma iska a karkashin mataki na CO2, samuwar alli carbonate, da kuma HPMC kawai ruwa riƙewa, karin calcium ash mafi alhẽri dauki, da kansa bai shiga wani dauki.
10, HPMC non-ionic cellulose ether, to menene wanda ba ionic ba?
A: Gabaɗaya magana, nonionic wani abu ne a cikin ruwa wanda baya ionize. Ionization shine tsarin da ake rarrabuwar wutar lantarki zuwa ions masu caji da yardar rai a cikin takamaiman ƙarfi, kamar ruwa ko 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 kyauta da kuma chloride ions (Cl) waɗanda aka caje su. A wasu kalmomi, HPMC a cikin ruwa baya rabuwa cikin ions da aka caje, amma ya wanzu azaman kwayoyin halitta.
11, hydroxypropyl methylcellulose gel zafin jiki da abin da ke da alaka?
- Amsa: Gel zafin jiki na HPMC yana da alaƙa da abun ciki na methoxy. Ƙananan abun ciki na methoxy, mafi girman yawan zafin jiki na gel ↑.
12. Shin akwai wata dangantaka tsakanin putty foda da HPMC?
- Amsa: putty foda foda da ingancin calcium yana da dangantaka mai kyau, kuma HPMC ba shi da dangantaka da yawa. Ƙananan abun ciki na calcium da adadin CaO, Ca (OH) 2 a cikin ash ash bai dace ba, zai haifar da zubar da foda. Idan yana da wani abu da HPMC, to rashin ruwa na HPMC ba shi da kyau, zai haifar da zubar da foda. Don takamaiman dalilai, da fatan za a duba tambaya ta 9.
13, hydroxypropyl methylcellulose ruwan sanyi nau'in mai narkewa da nau'in zafi mai narkewa a cikin tsarin samarwa, menene bambanci?
– A: HPMC ruwan sanyi mai narkewa irin ne bayan glioxal surface jiyya, sa a cikin ruwan sanyi da sauri tarwatsa, amma ba da gaske narkar da, danko sama, an narkar da. Nau'in mai narkewa mai zafi ba a yi masa magani da glioxal ba. Girman glioxal yana da girma, watsawa yana da sauri, amma danko yana jinkirin, ƙarar ƙarami ne, akasin haka.
14, hydroxypropyl methyl cellulose (HPMC) yana da kamshin abin da ke faruwa?
– Amsa: HPMC da aka samar ta hanyar ƙarfi an yi shi da toluene da barasa isopropyl azaman ƙarfi. Idan wankewar ba ta da kyau sosai, za a sami ɗanɗano kaɗan.
15, daban-daban amfani, yadda za a zabi daidai hydroxypropyl methyl cellulose (HPMC)?
- Amsa: Aiwatar da foda: abin da ake buƙata yana da ƙasa, danko shine 100 dubu, yana da kyau, muhimmin abu shine kiyaye ruwa mafi kyau. Aikace-aikacen turmi: abin da ake bukata ya fi girma, abin da ake bukata shine babban danko, 150 dubu ya kamata ya zama mafi kyau. Aikace-aikacen manne: buƙatar samfuran nan take, babban danko.
16, hydroxypropyl methylcellulose menene ma'anar?
A: Hydroxypropyl Methyl Cellulose, Turanci: Hydroxypropyl Methyl Cellulose gajarta: HPMC ko MHPC wanda aka fi sani da: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC a aikace-aikace na putty foda, putty foda kumfa menene dalili?
HPMC a cikin sa foda, kauri, riƙe ruwa da gina ayyuka uku. Rashin shiga cikin kowane martani. Dalilin kumfa: 1, ruwa ya yi yawa. 2, kasa ba bushe ba, a saman da kuma scraping Layer, kuma sauki kumfa.
18. Putty foda dabara don ciki da kuma na waje ganuwar?
- amsa: putty foda don bango na ciki: 800KG na alli mai nauyi da 150KG na calcium mai launin toka (sitaci ether, kore mai tsabta, ƙasa peng, citric acid da polyacrylamide za a iya ƙara daidai)
Na waje bango putty foda: ciminti 350KG nauyi alli 500KG ma'adini yashi 150KG latex foda 8-12kg cellulose ether 3KG sitaci ether 0.5kg itace fiber 2KG
19. Menene bambanci tsakanin HPMC da MC?
- MC don methyl cellulose, shine auduga mai ladabi bayan maganin alkali, tare da methane chloride a matsayin wakili na etherification, ta hanyar jerin halayen da ether cellulose. Gabaɗaya, matakin maye gurbin shine 1.6 ~ 2.0, kuma solubility ya bambanta da matakin maye gurbin. Yana da ether cellulose maras ionic.
(1) Riƙewar ruwa na methyl cellulose ya dogara da adadin ƙari, danko, fineness barbashi da saurin rushewa. Gabaɗaya ƙara babban adadin, ƙarami fineness, danko, babban adadin riƙe ruwa. Daga cikin su, adadin da aka kara da shi a cikin adadin ruwa yana da tasiri mafi girma, danko da matakin yawan ruwa ba daidai ba ne da dangantaka. A rushe kudi yafi dogara a kan surface gyara digiri da barbashi fineness na cellulose barbashi. A cikin ether cellulose na sama, methyl cellulose da hydroxypropyl methyl cellulose yawan riƙe ruwa ya fi girma.
(2) Methyl cellulose za a iya narkar da a cikin ruwan sanyi, ruwan zafi narkar da zai fuskanci matsaloli, da ruwa bayani a cikin pH = 3 ~ 12 kewayon ne sosai barga. Yana da kyau dacewa da sitaci, guanidine danko da yawa surfactants. Gelation yana faruwa lokacin da yawan zafin jiki ya kai yawan zafin jiki.
(3) Canjin zafin jiki zai yi tasiri sosai akan adadin riƙe ruwa na methyl cellulose. Gabaɗaya, mafi girman zafin jiki, mafi munin riƙewar ruwa. Idan yawan zafin jiki na turmi ya wuce 40 ℃, riƙewar ruwa na methyl cellulose zai yi muni sosai, yana da matukar tasiri ga ginin turmi.
(4) Methyl cellulose yana da tasirin gaske akan ginin da mannewa da turmi. Anan, “manne” yana nufin ƙarfin mannewa da ake ji tsakanin kayan aikin ma’aikaci da katangar bango, wato, juriyar juriyar turmi. Dukiyar manne tana da girma, juriyar juriyar turmi tana da girma, kuma ƙarfin da ma'aikata ke buƙata a cikin aikin kuma yana da girma, don haka kayan gini na turmi ba su da kyau. A cikin samfuran ether cellulose, mannewar methyl cellulose yana a matsakaicin matakin.
HPMC don hydroxypropyl methyl cellulose, an yi shi da auduga mai ladabi bayan maganin alkalization, tare da propylene oxide da chloromethane a matsayin wakili na etherifying, ta hanyar jerin halayen da aka yi da ether maras ionic cellulose. Matsayin maye gurbin gabaɗaya shine 1.2 ~ 2.0. Kaddarorinsa suna shafar rabon abun ciki na methoxy da abun ciki na hydroxypropyl.
(1) hydroxypropyl methyl cellulose mai narkewa a cikin ruwan sanyi, ruwan zafi narkar da zai gamu da matsaloli. Amma zafinsa na gelation a cikin ruwan zafi yana da girma fiye da na methyl cellulose. Solubility na methyl cellulose a cikin ruwan sanyi kuma yana inganta sosai.
(2) dankowar hydroxypropyl methyl cellulose yana da alaƙa da nauyin kwayoyinsa, kuma babban nauyin kwayoyin shine babban danko. Hakanan yanayin zafi zai shafi danko, yawan zafin jiki, raguwa yana raguwa. Duk da haka, danko na babban zafin jiki yana ƙasa da na methyl cellulose. Maganin yana da ƙarfi lokacin da aka adana shi a cikin zafin jiki.
(3) hydroxypropyl methyl cellulose yana da kwanciyar hankali ga acid da alkali, kuma maganin sa na ruwa yana da tsayi sosai a cikin kewayon pH = 2 ~ 12. Caustic soda da ruwan lemun tsami ba su da wani babban tasiri a kan kaddarorinsa, amma alkali na iya hanzarta rushewar adadin kuma inganta dankon fil. Hydroxypropyl methyl cellulose yana da kwanciyar hankali ga gishiri na gabaɗaya, amma lokacin da maida hankali na maganin gishiri ya yi girma, dankon hydroxypropyl methyl cellulose bayani yana ƙara ƙaruwa.
(4) Riƙewar ruwa na hydroxypropyl methyl cellulose ya dogara da adadin da aka kara da shi, danko, da dai sauransu, adadin yawan adadin ruwa ya fi methyl cellulose girma.
(5) hydroxypropyl methyl cellulose za a iya gauraye da ruwa-mai narkewa polymer mahadi ya zama uniform, mafi girma danko bayani. Kamar polyvinyl barasa, sitaci ether, shuka danko da sauransu.
(6) Mannewar hydroxypropyl methyl cellulose zuwa ginin turmi ya fi na methyl cellulose girma.
(7) hydroxypropyl methyl cellulose yana da mafi kyawun juriya na enzymatic fiye da methyl cellulose, kuma yiwuwar lalatawar enzymatic na maganin sa yana da ƙasa da na methyl cellulose.
20, dangantakar da ke tsakanin danko da zafin jiki na HPMC, wanda ya kamata a kula da shi a aikace-aikace mai amfani?
– Amsa: Dankowar HPMC ya bambanta da yanayin zafi, wato, danko yana ƙaruwa tare da raguwar zafin jiki. Lokacin da muke magana game da dankowar samfur, muna nufin sakamakon aunawa 2% maganin ruwa a zazzabi na 20 digiri Celsius.
A cikin aikace-aikacen aiki, a cikin yankunan da ke da babban bambancin zafin jiki tsakanin rani da hunturu, ya kamata a biya hankali ga shawarwarin don amfani da ƙananan danko a cikin hunturu, wanda ya fi dacewa da ginawa. In ba haka ba, lokacin da zafin jiki ya yi ƙasa, danko na cellulose zai karu, lokacin da zazzagewa, jin zai yi nauyi.
Lokacin aikawa: Satumba-20-2022