Menene Hydroxypropyl Methylcellulose HPMC?

Hydroxypropyl Methylcellulose HPMC, kuma aka sani da Cellulose ether , wani roba ne, ruwa mai narkewa polymer polymer wanda aka samu daga cellulose. Ana yin ta ne ta hanyar gyaggyarawa cellulose na halitta, wanda shine farkon tsarin tsarin shuke-shuke, ta hanyar tsarin sinadarai.

An bambanta darajar masana'antu hydroxypropyl methylcellulose ta danko. Gabaɗaya ana amfani da su sune maki masu zuwa (cikin sharuddan danko).

Ƙananan danko: 400 galibi ana amfani da shi don turmi mai daidaita kai, amma gabaɗaya ana shigo da shi. Dalili: ƙananan danko, kodayake riƙewar ruwa ba shi da kyau, amma matakin yana da kyau, yawan turmi yana da girma.

Medium da high danko: 20000-70000 ne yafi amfani da tayal m, caulking wakili, crack-resistant turmi, thermal rufi bonding turmi, da dai sauransu Dalilai: mai kyau workability, kasa ruwa, da kuma high turmi yawa.

Menene babban amfanin hydroxypropyl methylcellulose (HPMC)?

HPMCana amfani dashi 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: gini, abinci da magunguna. A halin yanzu, yawancin gine-ginen da ake samarwa a cikin gida suna da darajar gine-gine. A cikin aikin gini, adadin fulawa yana da girma sosai, kusan kashi 90% ana amfani da shi wajen yin fulawa, sauran kuma ana amfani da su a matsayin turmi da manne.

Akwai nau'ikan hydroxypropyl methylcellulose (HPMC). Menene banbancin amfaninsu?

HPMCza a iya raba zuwa ga narkar da nan take da zafi-narke, da sauri-narke kayayyakin. Lokacin da sauri ya tarwatse a cikin ruwan sanyi, ya ɓace cikin ruwa. A wannan lokacin, ruwan ba shi da danko saboda HPMC ana watsewa ne kawai a cikin ruwa kuma babu ainihin rushewa. Kusan mintuna 2, dankowar ruwan a hankali ya zama babba, ya zama colloid na danko mai haske. Nau'in nau'in narke mai zafi, a cikin yanayin ruwan sanyi, ana iya tarwatsa shi da sauri a cikin ruwan zafi kuma ya ɓace cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa takamaiman zafin jiki, danƙon yana bayyana a hankali har sai an sami colloid mai haske. Za a iya amfani da nau'in narkar da zafi kawai a cikin foda da turmi. A cikin manne ruwa da fenti, za a sami wani abu na clumping, wanda ba za a iya amfani da shi ba. Ana samuwa a cikin aikace-aikace masu yawa, a cikin foda da kuma turmi, da kuma a cikin mannen ruwa da sutura. Babu contraindications.

Menene hanyoyin narkar da hydroxypropyl methylcellulose (HPMC)?

Hanyar narkar da ruwan zafi: Tun da HPMC ba a narkar da shi a cikin ruwan zafi, HPMC ta farko za a iya tarwatsawa cikin ruwan zafi iri ɗaya sannan a narkar da sauri yayin sanyaya. Hanyoyi guda biyu na al'ada an kwatanta su kamar haka: 1), sanya a cikin akwati Shigar da adadin ruwan zafi da ake buƙata da zafi zuwa kusan 70 ° C. Hydroxypropyl methylcellulose an kara da shi a hankali tare da motsawa a hankali, kuma HPMC ta yi iyo a saman ruwa, sannan kuma an sami slurry a hankali, kuma an kwantar da slurry tare da motsawa. 2) Ƙara 1/3 ko 2/3 na adadin da ake buƙata na ruwa zuwa jirgin ruwa da dumama zuwa 70 ° C, watsawa HPMC bisa ga 1) don 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. Hanyar hada foda: ana hada foda na HPMC da wasu abubuwa masu yawa na foda, a hada su sosai tare da blender, sannan a narkar da shi da ruwa. A wannan lokacin, HPMC za a iya narkar da ba tare da agglomeration ba, saboda kowane ƙananan ƙananan kusurwa yana da ƙananan HPMC. Foda zai narke nan da nan idan aka hadu da ruwa. – Wannan hanya ana amfani da putty foda da turmi masana'antun. Ana amfani da Hydroxypropyl methylcellulose (HPMC) azaman mai kauri da mai riƙe ruwa a cikin turmi.

Yadda za a yi hukunci da ingancin hydroxypropyl methylcellulose (HPMC) cikin sauƙi da fahimta?

(1) Fari: Ko da yake fari ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara shi zuwa mai haske yayin aikin samarwa, zai shafi ingancinsa. Duk da haka, samfurori masu kyau sun fi yawa fari. (2) Lalacewa: Mafi kyawun HPMC gabaɗaya yana da raga 80 da raga 100, kuma raga 120 ya ragu. Mafi kyawun fineness, mafi kyau a gaba ɗaya. (3) Watsawa: Saka hydroxypropyl methylcellulose (HPMC) a cikin ruwa don samar da colloid mai haske, kuma duba gaskiyarsa. Mafi kyawun watsawa, abin da ba zai iya narkewa ba. . A tsaye reactor yana da kyau permeability, kuma kwance reactor ya fi muni, amma ba yana nufin cewa ingancin reactor a tsaye ya fi na kettle. An ƙayyade ingancin samfurin da abubuwa da yawa. (4) Nauyi na musamman: Girman ƙayyadaddun nauyi, gwargwadon nauyi. Adadin yana da girma, gabaɗaya saboda abun ciki na ƙungiyar hydroxypropyl yana da girma, kuma abun ciki na ƙungiyar hydroxypropyl yana da girma, riƙewar ruwa ya fi kyau.

Menene adadin hydroxypropyl methylcellulose (HPMC) a cikin sa foda?

Adadin aikin ginin HPMCamfani da aikace-aikace masu amfani ya bambanta da sauyin yanayi, zafin jiki, ingancin ash ash na gida, ma'anar putty foda da "ingancin da abokan ciniki ke buƙata". A general, daga 4 zuwa 5 kg. Alal misali: yankin sanyi putty foda, mafi yawan sa 5 kg; Yankin zafi ya fi kilogiram 5 a lokacin rani da 4.5 kg a cikin hunturu.

Menene danko na hydroxypropyl methylcellulose (HPMC)?

Furen da ake sawa a bango shine gabaɗaya 100,000, kuma busasshen turmi ana buƙatar ya zama mafi girma. Wajibi ne a yi amfani da 150,000. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri ya biyo baya. A cikin putty foda, idan dai ruwa yana da kyau, danko yana da ƙananan (70,000-80,000), yana yiwuwa kuma. Tabbas, danko ya fi girma, damun dangi ya fi kyau. Lokacin da danko ya wuce 100,000, tasirin danko akan riƙe ruwa bai yi girma ba.

Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?

Abun ciki na Hydroxypropyl da danko, yawancin masu amfani sun damu da waɗannan alamomi guda biyu. Idan abun ciki na hydroxypropyl yana da girma, riƙewar ruwa gabaɗaya ya fi kyau. Dankowa, riƙewar ruwa, dangi (maimakon cikakkiya), da babban danko, mafi kyau a turmi siminti.

Menene ainihin albarkatun ƙasa na hydroxypropyl methylcellulose (HPMC)?

Babban albarkatun kasa na hydroxypropyl methylcellulose (HPMC): auduga mai ladabi, methyl chloride, propylene oxide, sauran albarkatun kasa, irin su caustic soda, acid, toluene, isopropanol.

Menene babban aikin HPMC a cikin aikace-aikacen putty foda?

HPMC tana taka rawar kauri, riƙe ruwa da gini a cikin foda. Kauri: Ana iya kauri cellulose don dakatarwa, kiyaye maganin daidai gwargwado, da tsayayya da sag. Riƙewar ruwa: Ana bushe foda a hankali a hankali, kuma ash ash calcium yana amsawa ƙarƙashin aikin ruwa. Gina: Cellulose yana da tasirin lubricating, wanda zai iya sa foda mai sanyawa ya sami kyakkyawan aiki. HPMC baya shiga cikin kowane halayen sinadarai kuma yana taka rawar tallafi kawai. Putty foda tare da ruwa, a kan bango, shine halayen sinadaran. Saboda samuwar sabbin abubuwa, ana cire foda a jikin bangon daga bangon, a niƙa shi cikin foda, kuma a sake amfani da shi, ba zai yi aiki ba, saboda an sami sabon abu (calcium carbonate). ). Babban abubuwan da ke cikin ash calcium foda sune: Ca (OH) 2, cakuda CaO da ƙaramin adadin CaCO3, CaO + H2O = Ca (OH) 2-Ca (OH) 2+ CO2 = CaCO3+H2O ash calcium in ruwa da iska Karkashin aikin CO2, sinadarin calcium carbonate yana samuwa, kuma HPMC kawai tana riƙe da ruwa, yana taimakawa mafi kyawun halayen ash calcium, kuma baya shiga cikin kowane hali da kansa. 

HPMC shine ether cellulose maras ionic, to menene ba ion ba?

Gabaɗaya magana, rashin ion abu ne da ba ya cikin ruwa kuma ba a sanya shi a cikin ruwa ba. Ionization yana nufin tsarin da ake rarraba electrolyte zuwa ion da aka caje cikin yardar kaina a cikin takamaiman sauran ƙarfi kamar ruwa ko barasa. Misali, gishirin da ake ci kowace rana, sodium chloride (NaCl), ana ionized don samar da ion sodium ions (Na+) mai motsi kyauta da cajin chloride (Cl) mara kyau. Wato, ana sanya HPMC a cikin ruwa kuma baya rabuwa cikin ions da aka caje, amma yana wanzuwa ta hanyar kwayoyin halitta.

Menene zafin gel na hydroxypropyl methylcellulose?

Zazzaɓin gel na HPMC yana da alaƙa da abun ciki na methoxy. Ƙananan abun ciki na methoxy, mafi girman yawan zafin jiki na gel.

Shin foda na putty foda yana da dangantaka da HPMC?

Foda na putty foda yana da alaƙa da ingancin calcium mai launin toka, kuma ba shi da alaƙa da HPMC. Ƙananan abun ciki na calcium na ash calcium da rabon da bai dace ba na CaO da Ca (OH) 2 a cikin ash calcium zai haifar da asarar foda. Idan yana da alaƙa da HPMC, to, idan riƙewar ruwa na HPMC ba shi da kyau, zai haifar da asarar foda.

Menene bambanci tsakanin nau'in ruwan sanyi nan take da nau'in zafi mai narkewa na hydroxypropyl methylcellulose a cikin tsarin samarwa? Nau'in ruwan sanyi na HPMC nan take ana bi da shi tare da glioxal, kuma ana watsa shi cikin sauri cikin ruwan sanyi, amma ba a narkar da shi da gaske. Lokacin da danko ya tashi, yana narkar da shi. Siffofin mai zafi ba a bi da su tare da glioxal. Lokacin da adadin glycoxal ya girma, tarwatsawa yana da sauri, amma danko yana jinkirin. 

Menene kamshin hydroxypropyl methylcellulose (HPMC)?

HPMC da aka samar ta hanyar mai narkewa yana amfani da toluene da barasa isopropyl azaman kaushi. Idan wankewar ba ta da kyau sosai, za a sami ɗanɗano kaɗan.

Yadda za a zabi madaidaicin hydroxypropyl methylcellulose (HPMC) don dalilai daban-daban?

Aikace-aikace na putty foda: abin da ake bukata shine ƙananan, danko shine 100,000, yana da kyau, abu mai mahimmanci shine kiyaye ruwa mafi kyau. Aikace-aikace na turmi: high bukatun, high danko, 150,000 ne mafi alhẽri. Aikace-aikacen manna: Bukatar nau'in samfurin nan take, babban danko.

Menene sunan farko na hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose, HydroxypropylMethylCellulose Gajartawa: HPMC ko MHPC wanda aka fi sani da: hypromellose; cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose ether, 2-hydroxypropylmethyl Cellulos eether. Cellulose hydroxypropyl methyl ether, Hyprolose.

Aikace-aikacen HPMC a cikin ƙwayar ƙwayar cuta, menene dalilin kumfa a cikin foda?

HPMC tana taka rawar kauri, riƙe ruwa da gini a cikin foda. Kada ku shiga cikin kowane hali. Dalilin kumfa: 1, ruwa yayi yawa. 2, Layer na kasa bai bushe ba, kawai a goge Layer a saman, yana da sauƙi don kumfa.　

Na ciki da waje bango putty foda dabara?

Ciki bango putty foda: nauyi alli 800KG launin toka alli 150KG (sitaci ether, tsarki kore, penmine ƙasa, citric acid, polyacrylamide, da dai sauransu za a iya yadda ya kamata zaba don ƙara)

External 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

Menene bambanci tsakanin HPMC da MC?

MC shine methyl cellulose. Bayan an yi amfani da auduga mai ladabi tare da alkali, ana amfani da chloromethane a matsayin wakili na etherifying, kuma ana yin jerin halayen don shirya ether cellulose. Matsakaicin maye gaba ɗaya shine 1.6 zuwa 2.0, kuma matakin maye gurbin ya bambanta dangane da solubility. Nasa ne na nonionic cellulose ether.

(1) Riƙewar ruwa na methyl cellulose ya dogara da adadin ƙari, danko, fineness barbashi da rushewar kudi. Gabaɗaya, adadin ƙari yana da girma, ƙarancin ƙarancin ƙanƙara ne, kuma danko yana da girma, kuma yawan riƙe ruwa yana da girma. Adadin ƙarin yana da tasiri mafi girma akan ƙimar riƙe ruwa, kuma matakin danko bai dace da ƙimar riƙe ruwa ba. Adadin rushewar ya dogara ne akan matakin gyare-gyaren surface na ƙwayoyin cellulose da fineness na barbashi. Daga cikin ethers cellulose da ke sama, methylcellulose da hydroxypropylmethylcellulose suna da yawan ajiyar ruwa.

(2) Methylcellulose yana narkewa a cikin ruwan sanyi, kuma yana da wuya a narke cikin ruwan zafi. Maganin ruwa mai ruwa ya tsaya sosai a cikin kewayon pH = 3 ~ 12. Yana da kyau dacewa tare da sitaci, guar danko da sauran surfactants da yawa. Lokacin da yawan zafin jiki ya kai ga zafin jiki na gelation, wani abu na gelation yana faruwa.

(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 ° C, riƙewar ruwa na methyl cellulose zai zama da wahala sosai, wanda ke tasiri sosai ga aikin turmi.

(4) Methyl cellulose yana da tasiri mai mahimmanci akan aikin aiki da mannewa na turmi. “Manne” a nan yana nufin ƙarfin mannewa da ake ji tsakanin kayan aikin ma’aikaci da katangar bango, wato, juriyar juriyar turmi. Adhesion yana da girma, juriyar juriya na turmi yana da girma, ƙarfin da ma'aikaci ke buƙata yayin amfani da shi kuma yana da girma, kuma aikin turmi ba shi da kyau.

Methylcellulose adhesion shine matsakaici a cikin samfuran ether cellulose. HPMC shine hydroxypropylmethylcellulose, wanda shine nonionic cellulose gauraye ether wanda aka shirya ta jerin halayen ta amfani da acetal oxide da methyl chloride a matsayin wakili na etherifying bayan alkalization na auduga mai ladabi. Matsakaicin maye gaba ɗaya shine 1.2 zuwa 2.0. Yanayinsa ya bambanta dangane da rabon abun ciki na methoxyl da abun ciki na hydroxypropyl.

(1) Hydroxypropyl methylcellulose yana da sauƙin narkewa a cikin ruwan sanyi, kuma yana iya zama da wahala a narke cikin ruwan zafi. Duk da haka, zafinsa na gelation a cikin ruwan zafi yana da girma fiye da na methyl cellulose. Har ila yau, narkar da cikin ruwan sanyi ya fi methyl cellulose kyau. -

(2) Dankowar hydroxypropylmethylcellulose yana da alaƙa da nauyin kwayoyin halitta, kuma danko yana da girma lokacin da nauyin kwayoyin ya girma. Hakanan yanayin zafi yana rinjayar danko, zafin jiki yana tashi, kuma danko yana raguwa. Duk da haka, danko yana da ƙananan zafin jiki fiye da methyl cellulose. Maganin sa yana da ƙarfi a cikin zafin jiki.

(3) Hydroxypropyl methylcellulose yana da kwanciyar hankali ga acid da tushe, kuma maganin sa na ruwa yana da tsayi sosai a cikin kewayon pH = 2 ~ 12. Caustic soda da ruwan lemun tsami ba su da tasiri sosai a kan kaddarorin su, amma alkali yana haɓaka ƙimar rushewar su kuma yana ƙara danko. Hydroxypropyl methylcellulose yana da kwanciyar hankali ga gishiri na gabaɗaya, amma lokacin da maida hankali na maganin gishiri ya yi girma, dankowar maganin hydroxypropyl methylcellulose yana ƙara ƙaruwa.

(4) Riƙewar ruwa na hydroxypropyl methylcellulose ya dogara ne akan adadin ƙari, danko, da dai sauransu, kuma yawan ajiyar ruwa a ƙarƙashin adadin daidai ya fi na methylcellulose.

(5) Hydroxypropyl methylcellulose za a iya gauraye da ruwa mai narkewa polymer fili don samar da uniform, mafi girma danko bayani. Kamar polyvinyl barasa, sitaci ether, kayan lambu danko da makamantansu.

(6) Hydroxypropyl methylcellulose yana da mafi girman mannewa zuwa turmi fiye da methyl cellulose.

(7) Hydroxypropyl methylcellulose yana da mafi kyawun juriya na enzymatic fiye da methylcellulose, kuma maganinsa ba shi da yuwuwar lalacewa ta hanyar enzymatically fiye da methylcellulose.

HPMC danko da yanayin zafi, menene ya kamata a kula da shi a aikace-aikace masu amfani?

Dankowar HPMC ya yi daidai da yanayin zafi, wato, danko yana ƙaruwa tare da rage zafin jiki. Dankowar samfurin da muke magana akai shine sakamakon gwajin maganinsa na 2% na ruwa a zazzabi na digiri 20 na ma'aunin celcius. A cikin aikace-aikace masu amfani, a cikin yankunan da ke da manyan bambance-bambancen zafin jiki tsakanin rani da hunturu, ya kamata a lura cewa an bada shawarar yin amfani da ƙananan danko a cikin hunturu, wanda ya fi dacewa da ginawa. In ba haka ba, lokacin da zafin jiki ya ragu, danko na cellulose zai karu, kuma lokacin da aka goge shi, jin hannun zai yi nauyi. Matsakaici danko: 75000-100000 Yafi amfani da putty Dalili: ruwa riƙe high danko: 150000-200000 ne yafi amfani da polystyrene granule rufi turmi foda da vitrified microbead rufi turmi. Dalili: high danko, turmi ba sauki fada Ee, sag, ingantaccen gini. Amma gabaɗaya, mafi girman danko, mafi kyawun riƙewar ruwa, yawancin busassun shuke-shuken turmi sunyi la'akari da farashi, maye gurbin matsakaici da ƙananan danko cellulose tare da matsakaicin danko (75000-100000). (20000-40000) don rage adadin da aka ƙara.