Wannan labarin a cikin nau'in tambayoyi da amsoshi ga mai karatu game da ilimin da ya shafi hydroxypropyl methyl cellulose ether, don haka kuna da zurfin fahimtar HPMC cikin ɗan gajeren lokaci, domin ku zaɓi da amfani da irin wannan samfurin a cikin ainihin samarwa.
1, menene babban amfani da shihydroxypropyl methyl cellulose (HPMC)?
Ana amfani da HPMC sosai a fannin kayan gini, fenti, resin roba, yumbu, magani, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba HPMC zuwa: matakin gini, matakin abinci da matakin likita ta hanyar amfani. A halin yanzu, yawancin matakin gini na gida, a matakin gini, yawan amfani da foda na putty yana da yawa, kusan kashi 90% ana amfani da shi don yin foda na putty, sauran kuma ana amfani da shi don yin turmi da manne na siminti.
2, hydroxypropyl methyl cellulose (HPMC) an raba shi zuwa da dama, menene bambanci a amfani da shi?
Ana iya raba HPMC zuwa nau'in maganin nan take da na zafi, samfuran nan take, a cikin ruwan sanyi da sauri suna warwatse, suna ɓacewa cikin ruwa, a wannan lokacin ruwan ba shi da danko, saboda HPMC kawai yana warwatse a cikin ruwa, babu narkewar gaske. Kimanin mintuna 2, dankowar ruwan yana ƙaruwa a hankali, yana samar da colloid mai haske. Samfuran da ke narkewa da zafi, a cikin ruwan sanyi, ana iya warwatse su da sauri a cikin ruwan zafi, suna ɓacewa a cikin ruwan zafi, lokacin da zafin ya faɗi zuwa wani zafin jiki, danko yana bayyana a hankali, har sai samuwar colloid mai haske. Ana iya amfani da maganin zafi kawai a cikin foda da turmi, a cikin manne da fenti na ruwa, za a sami wani abu na rukuni, ba za a iya amfani da shi ba. MISALI NA MAGANCEWA Nan take, JERIN AIKACE-AIKACE YA FI FAƊI, A GASANCE DA FUDAR YARO DA TUMBI, KUMA A CIKIN MANTUWA DA SHAFAWA NA RUWA, DUK ANA IYA AMFANI DA SHI, BA TARE DA WANI HANCI BA.
3, hanyoyin narkewar hydroxypropyl methyl cellulose (HPMC) suna da waɗannan?
– A: Hanyar narkewar ruwan zafi: saboda HPMC ba ta narkewa a cikin ruwan zafi, don haka HPMC da wuri za a iya watsa shi daidai a cikin ruwan zafi, sannan a narkar da shi da sauri lokacin sanyaya, an bayyana hanyoyi guda biyu na yau da kullun kamar haka: 1), a cikin akwati a cikin adadin ruwan zafi da ake buƙata, sannan a dumama shi zuwa kusan 70℃. A hankali a ƙara hydroxypropyl methylcellulose a hankali a hankali, HPMC ta fara iyo a saman ruwan, sannan a hankali ta samar da slurry, a ƙarƙashin motsawa tana sanyaya slurry. 2), a ƙara adadin da ake buƙata na 1/3 ko 2/3 na ruwa a cikin akwati, sannan a dumama zuwa 70℃, bisa ga hanyar 1), watsawar HPMC, shirya slurry na ruwan zafi; Sannan a ƙara sauran adadin ruwan sanyi a cikin slurry mai zafi, a juya a kwantar da cakuda. Hanyar haɗa foda: Foda HPMC da adadi mai yawa na sauran sinadaran foda, a gauraya sosai da blender, bayan an ƙara ruwa don narkewa, to HPMC na iya narkewa a wannan lokacin, amma ba haɗin kai ba, saboda kowane ƙaramin kusurwa, ƙaramin foda na HPMC kawai, ruwa zai narke nan take. – Kamfanonin samar da foda da turmi suna amfani da wannan hanyar. Ana amfani da sinadarin hydroxypropyl METHYL cellulose (HPMC) a matsayin sinadarin kauri da kuma sinadarin riƙe ruwa a cikin turmi na putty.
4, yaya sauƙi da fahimta don tantance ingancin hydroxypropyl methyl cellulose (HPMC)?
– Amsa: (1) fari: kodayake fari ba zai iya tantance koHPMCyana da kyau a yi amfani da shi, kuma idan aka ƙara shi a cikin tsarin samar da wakili mai farin ƙarfe, zai shafi ingancinsa. Duk da haka, kayayyaki masu kyau galibi fari ne. (2) ƙanƙanta: ƙanƙanta HPMC gabaɗaya raga 80 da raga 100, ƙasa da amfani 120, Hebei HPMC galibi raga 80, ƙanƙanta ƙanƙanta, gabaɗaya mafi kyau. (3) watsawa: hydroxypropyl methyl cellulose (HPMC) cikin ruwa, samuwar colloid mai haske, duba watsawa, mafi girma watsawa, mafi kyau, mafi ƙarancin narkewa a ciki. Ƙarfin wutar lantarki na tsaye gabaɗaya yana da kyau, mai kwance yana da muni, amma ba zai iya nuna cewa ingancin samar da mai tsaye ya fi na samar da mai kwance ba, ingancin samfur yana ƙaddara ta dalilai da yawa. (4) takamaiman nauyi: mafi girman takamaiman nauyi, mafi nauyi mafi kyau. Fiye da mahimmanci, gabaɗaya saboda abun ciki na hydroxypropyl yana da yawa, abun ciki na hydroxypropyl yana da yawa, to riƙe ruwa ya fi kyau.
5, hydroxypropyl methyl cellulose (HPMC) a cikin adadin foda putty?
– Amsa: HPMC a zahirin amfani da maganin, ta hanyar yanayin yanayi, zafin jiki, ingancin ash na calcium na gida, dabarar foda putty da “buƙatun abokin ciniki na inganci”, kuma akwai bambanci. Gabaɗaya, maganin putty mai jure ruwa a cikin kilogiram 4 - kilogiram 5 tsakanin. Misali: Powder putty na Beijing, galibi ana sanya shi kilogiram 5; A Guizhou, yawancinsu kilogiram 5 ne a lokacin rani da kilogiram 4.5 a lokacin hunturu. Yawan Yunnan ƙarami ne, gabaɗaya kilogiram 3 - kilogiram 4 da sauransu. Kuma yawan HPMC a cikin putty 821 gabaɗaya yana cikin kilogiram 2 ~ 3.
6, hydroxypropyl methyl cellulose (HPMC) nawa ne ya dace da danko?
– Amsa: A gaji da FODAR YARA JANAR DUBU 100 TO, BUKATA A CIKIN TUMFIRA TA FI TSAYI, ANA SO IYA YI AMFANI DA DUBU 150. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan a biyo baya da kauri. A cikin foda putty, matuƙar riƙe ruwa yana da kyau, ɗanɗanon yana da ƙasa (7-80,000), haka nan yana yiwuwa, ba shakka, ɗanɗanon ya fi girma, riƙe ruwa mai alaƙa ya fi kyau, idan ɗanɗanon ya fi dubu 100, ɗanɗanon ba shi da tasiri sosai akan riƙe ruwa.
7, hydroxypropyl methyl cellulose (HPMC) menene manyan alamun fasaha?
A: Yawan sinadarin Hydroxypropyl da danko, wanda shine abin da yawancin masu amfani ke damuwa da shi. Yawan sinadarin Hydroxypropyl yana da yawa, riƙon ruwa gabaɗaya ya fi kyau. Danko, riƙon ruwa, dangi (amma ba cikakke ba) shi ma ya fi kyau, da danko, a cikin turmi na siminti ya fi kyau a yi amfani da wasu.
8, hydroxypropyl methyl cellulose (HPMC) menene manyan kayan amfanin gona?
– Amsa: hydroxypropyl methyl cellulose (HPMC) na manyan kayan: auduga mai ladabi, chloromethane, propylene oxide, sauran kayan da aka yi amfani da su, alkali na kwamfutar hannu, acid, toluene, isopropyl alcohol, da sauransu.
9, HPMC wajen amfani da foda mai tsami, menene babban aikin, ko dai sinadarai?
HPMC a cikin foda na putty, kauri, riƙe ruwa da kuma gina ayyuka uku. Kauri: Ana iya ƙara cellulose don yin dakatarwa, don haka maganin ya ci gaba da kasancewa iri ɗaya a sama da ƙasa, yana rataye da hana kwarara. Rike ruwa: sa foda na putty ya bushe a hankali, amsawar ash na calcium a ƙarƙashin aikin ruwa. Ginawa: Cellulose yana da tasirin shafawa, yana iya sa foda na putty ya yi kyau. HPMC ba ya shiga cikin duk wani halayen sinadarai, yana taka rawa kawai. Ruwan da aka ƙara na putty, a bango, amsawar sinadarai ce, saboda akwai samar da sabon abu, foda na putty a bango ƙasa daga bango, niƙa shi zuwa foda, sannan a yi amfani da shi, ba ya nan, saboda ya samar da sabon abu (calcium carbonate). Babban abubuwan da ke cikin foda mai launin toka sune: Ca(OH)2, CaO da ƙaramin adadin cakuda CaCO3, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O tokar calcium a cikin ruwa da iska ƙarƙashin aikin CO2, samuwar calcium carbonate, da kuma riƙe ruwa na HPMC kawai, ƙarin tokar calcium mafi kyau, nasa bai shiga cikin wani martani ba.
10, HPMC cellulose ether mara ionic, to menene ba ionic ba?
A: Gabaɗaya, nonionic wani sinadari ne da ke cikin ruwa wanda ba ya yin ionization. Ionization shine tsarin da ake raba electrolyte zuwa ions masu motsi cikin 'yanci a cikin wani sinadari na musamman, kamar ruwa ko barasa. Misali, sodium chloride (NaCl), gishirin da muke ci kowace rana, yana narkewa a cikin ruwa kuma yana yin ionizing don samar da ions masu motsi na free-moving sodium (Na+) waɗanda ke da positive da ions na chloride (Cl) waɗanda ke da charged negative. A wata ma'anar, HPMC a cikin ruwa ba ya rabuwa zuwa ions masu caji, amma yana wanzuwa azaman ƙwayoyin halitta.
11, zafin gel na hydroxypropyl methylcellulose kuma menene alaƙa da shi?
– Amsa: Zafin gel na HPMC yana da alaƙa da yawan methoxy ɗinsa. Mafi ƙarancin yawan methoxy, haka nan yawan zafin gel ɗin yake.
12. Akwai wata alaƙa tsakanin foda na putty da HPMC?
– Amsa: foda na putty foda da ingancin calcium suna da kyakkyawar alaƙa, kuma HPMC ba shi da alaƙa da yawa. Ƙarancin sinadarin calcium na calcium da kuma rabon CaO, Ca(OH)2 a cikin tokar calcium bai dace ba, zai haifar da faɗuwar foda. Idan yana da alaƙa da HPMC, to riƙe ruwa na HPMC ba shi da kyau, zai kuma haifar da faɗuwar foda. Don takamaiman dalilai, don Allah duba tambaya ta 9
13, nau'in hydroxypropyl methylcellulose mai narkewa a cikin ruwan sanyi da kuma nau'in mai narkewa a cikin ruwan zafi a cikin tsarin samarwa, menene bambanci?
– A : Nau'in HPMC mai narkewar ruwan sanyi ana yin sa ne bayan an yi masa maganin glyoxal surface, a saka shi a cikin ruwan sanyi da sauri, amma bai narke ba, sai ya narke, sannan ya narke. Ba a yi wa glyoxal magani ba. Girman glyoxal yana da girma, watsawa yana da sauri, amma danko yana da jinkiri, girman yana da ƙarami, akasin haka.
14, hydroxypropyl methyl cellulose (HPMC) yana da warin abin da ke faruwa?
– Amsa: Ana yin HPMC ta hanyar amfani da hanyar narkewar abinci daga toluene da isopropyl barasa a matsayin mai narkewar abinci. Idan wankewar ba ta da kyau sosai, za a sami ɗanɗanon da ya rage.
15, amfani daban-daban, yadda ake zaɓar hydroxypropyl methyl cellulose (HPMC) da ya dace?
– Amsa: Aiwatar da foda na putty: buƙatar ta yi ƙasa, ɗanɗanon ya yi dubu 100, babu matsala, abu mafi mahimmanci shine a kiyaye ruwan ya yi kyau. Aiwatar da turmi: buƙatar ta yi girma, buƙatar ta yi yawa, ya kamata ta yi dubu 150. Aiwatar da manne: buƙatar samfura nan take, ɗanɗanon ya yi yawa.
16, hydroxypropyl methylcellulose menene sunan da aka fi sani da shi?
A: Hydroxypropyl Methyl Cellulose, Turanci: Hydroxypropyl Methyl Cellulose taƙaice: HPMC ko MHPC laƙabi: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC wajen amfani da foda na putty, kumfa na putty foda menene dalili?
HPMC a cikin foda mai kauri, kauri, riƙe ruwa da kuma gina ayyuka uku. Rashin shiga cikin wani abu. Dalilin kumfa: 1, ruwan ya yi yawa. 2, ƙasan ba ta bushe ba, a saman kuma a goge wani Layer, kuma yana da sauƙin kumfa.
18. Tsarin foda na putty don bangon ciki da na waje?
– Amsa: foda mai jure ruwa don bango na ciki: 750 ~ 850KG na calcium mai nauyi, 150 ~ 250KG na calcium mai launin toka, 4 ~ 5KG na cellulose ether, da 1 ~ 2KG na polyvinyl alcohol foda yadda ya kamata; Foda na waje na putty: farin siminti 350KG, calcium mai nauyi 500-550kg, calcium mai launin toka 100-150kg, foda na latex 8-12kg, cellulose ether 5KG, zare na itace 3KG.
19. Menene bambanci tsakaninHPMCkumaMC?
– MC na methyl cellulose, shine auduga mai tsafta bayan maganin alkali, tare da methane chloride a matsayin wakilin etherification, ta hanyar jerin halayen da cellulose ether. Gabaɗaya, matakin maye gurbin shine 1.6~2.0, kuma narkewar ya bambanta dangane da matakin maye gurbin. Cellulose ether ne wanda ba ionic ba.
(1) Rike ruwa na methyl cellulose ya dogara da adadin ƙari, ɗanko, ɗanko da saurin narkewa. Gabaɗaya ƙara yawan, ƙaramin ɗanko, ɗanko, yawan riƙe ruwa. Daga cikinsu, adadin da aka ƙara wa ƙimar riƙe ruwa yana da babban tasiri, ɗanko da matakin riƙe ruwa ba su da alaƙa da alaƙar. Yawan narkewar ya dogara ne akan matakin gyaran saman da ƙarancin barbashi na barbashi na cellulose. A cikin cellulose ether da ke sama, ƙimar riƙe ruwa na methyl cellulose da hydroxypropyl methyl cellulose ya fi girma.
(2) Ana iya narkar da Methyl cellulose a cikin ruwan sanyi, ruwan zafi da aka narkar zai fuskanci matsaloli, ruwan da ke cikin pH = 3 ~ 12 yana da ƙarfi sosai. Yana da kyakkyawan jituwa da sitaci, guanidine danko da kuma yawancin surfactants. Gelation yana faruwa ne lokacin da zafin jiki ya kai zafin gelation.
(3) Sauyin zafin jiki zai yi tasiri sosai ga yawan riƙe ruwa na methyl cellulose. Gabaɗaya, yawan zafin jiki, haka nan riƙon ruwa ke ƙara muni. Idan zafin turmi ya wuce 40℃, riƙon ruwan methyl cellulose zai yi muni sosai, wanda hakan zai shafi ginin turmi sosai.
(4) Methyl cellulose yana da tasiri a fili akan ginawa da mannewa na turmi. A nan, "mannewa" yana nufin ƙarfin manne da aka ji tsakanin kayan aikin ma'aikacin da kuma abin da ke kan bango, wato, juriyar yanke turmi. Ƙarfin manne yana da girma, juriyar yanke turmi yana da girma, kuma ƙarfin da ma'aikata ke buƙata yayin amfani shi ma yana da girma, don haka kadarar gini ta turmi ba ta da kyau.
A cikin kayayyakin cellulose ether, mannewar methyl cellulose yana da matsakaicin matsayi. HPMC don hydroxypropyl methyl cellulose, an yi shi ne da auduga mai tsafta bayan maganin alkali, tare da propylene oxide da chloromethane a matsayin wakili mai hana etherifying, ta hanyar jerin halayen kuma an yi shi da gaurayen ether cellulose marasa ionic. Matsakaicin maye gurbin gabaɗaya shine 1.2~2.0. Abubuwan da ke cikinsa suna shafar rabon abubuwan da ke cikin methoxy da abubuwan da ke cikin hydroxypropyl.
(1) hydroxypropyl methyl cellulose wanda ke narkewa a cikin ruwan sanyi, ruwan zafi da ke narkewa zai fuskanci matsaloli. Amma zafinsa na gelation a cikin ruwan zafi ya fi na methyl cellulose girma sosai. Narkewar methyl cellulose a cikin ruwan sanyi kuma ya inganta sosai.
(2) dankowar hydroxypropyl methyl cellulose yana da alaƙa da nauyin kwayoyin halittarsa, kuma babban nauyin kwayoyin halittar shine babban dankowar. Zafin jiki kuma zai shafi dankowar sa, zafin jiki yana ƙaruwa, dankowar yana raguwa. Duk da haka, dankowar zafin jiki mai yawa ya fi na methyl cellulose ƙasa. Maganin yana da karko idan aka adana shi a zafin jiki na ɗaki.
(3) hydroxypropyl methyl cellulose yana da daidaito ga acid da alkali, kuma ruwan da ke cikinsa yana da daidaito sosai a cikin pH = 2 ~ 12. Caustic soda da ruwan lemun tsami ba su da wani tasiri mai kyau a kan halayensa, amma alkali na iya hanzarta saurin narkewarsa da kuma inganta danko na fil. Hydroxypropyl methyl cellulose yana da daidaito ga gishirin gabaɗaya, amma lokacin da yawan ruwan gishiri ya yi yawa, danko na ruwan hydroxypropyl methyl cellulose yana ƙaruwa.
(4) Rikewar ruwa na hydroxypropyl methyl cellulose ya dogara da adadin da aka ƙara, danko, da sauransu, adadin riƙe ruwa iri ɗaya ya fi na methyl cellulose girma.
(5) Ana iya haɗa hydroxypropyl methyl cellulose da mahaɗan polymer masu narkewa cikin ruwa don su zama mafita iri ɗaya, mafi girman danko. Kamar polyvinyl alcohol, sitaci ether, plant gum da sauransu.
(6) Mannewar hydroxypropyl methyl cellulose ga ginin turmi ya fi na methyl cellulose girma.
(7) hydroxypropyl methyl cellulose yana da juriyar enzymatic mafi kyau fiye da methyl cellulose, kuma yiwuwar lalacewar enzymatic na maganin sa ya yi ƙasa da na methyl cellulose.
20, alaƙar da ke tsakanin ɗanko da zafin jiki na HPMC, wacce ya kamata a kula da ita a aikace?
– Amsa: Danko na HPMC ya yi daidai da yanayin zafi, wato, danko yana ƙaruwa tare da raguwar zafin jiki. Idan muka yi magana game da danko na wani samfuri, muna nufin sakamakon auna ruwansa na kashi 2% a zafin digiri 20 na Celsius. A aikace, a yankunan da ke da babban bambanci tsakanin zafi da hunturu, ya kamata a kula da shawarar amfani da ƙarancin danko a lokacin hunturu, wanda ya fi dacewa da gini. In ba haka ba, lokacin da zafin ya yi ƙasa, danko na cellulose zai ƙaru, lokacin da ake gogewa, jin zai yi nauyi. Matsakaicin danko :75000-100000 ana amfani da shi ne musamman saboda dalilin putty: riƙon ruwa mai kyau babban danko :150000-200000 galibi ana amfani da shi ne don barbashi na polystyrene rufin zafi mai rufi kayan foda na turmi da beads na gilashi turmi mai rufi na zafi. Dalili: babban danko, turmi ba shi da sauƙin zubar da toka da gudana a rataye, inganta ginin. Amma gabaɗaya, idan aka yi la'akari da girman danko, to, yawan riƙe ruwa zai fi kyau, don haka masana'antun turmi da yawa suna la'akari da farashin, tare da cellulose mai matsakaicin danko (75,000-100000) don maye gurbin cellulose mai ƙarancin danko (20,000-40000) don rage adadin ƙarin.
Lokacin Saƙo: Afrilu-25-2024