Waa maxay Hydroxypropyl Methylcellulose HPMC?

Hydroxypropyl Methylcellulose HPMC, oo sidoo kale loo yaqaan Cellulose ether, waa polymer synthetic, biyo-milmi leh oo ka soo jeeda cellulose.Waxaa lagu sameeyaa iyadoo la bedelayo cellulose dabiiciga ah, taas oo ah qaybta aasaasiga ah ee dhismaha dhirta, iyada oo loo marayo hababka kiimikada ee taxane ah.

Heerka warshadaha hydroxypropyl methylcellulose waxaa lagu kala saaraa viscosity.Guud ahaan waxaa loo adeegsadaa darajooyinka soo socda (marka la eego viscosity).

Mawjad hoose: 400 waxaa inta badan loo isticmaalaa hoobiyeyaasha is-milliminta, laakiin guud ahaan waa la soo dejiyaa.Sababta: viscosity hoose, inkasta oo haynta biyuhu ay liidato, laakiin heerku waa wanaagsan yahay, cufnaanta hoobiye ayaa sarreeya.

Dhexdhexaad iyo viscosity sare: 20000-70000 waxaa inta badan loo isticmaalaa koollada dhoobada, wakiilka caulking, hoobiye u adkaysta dildilaaca, dahaadhka kulaylka hoobiye xidhida, iwm Sababaha: shaqo fiican, biyo yar, iyo cufnaanta hoobiye sare.

Waa maxay isticmaalka ugu muhiimsan ee hydroxypropyl methylcellulose (HPMC)?

HPMCwaxaa si weyn loogu isticmaalaa qalabka dhismaha, dahaarka, xabagta synthetic, ceramics, daawada, cuntada, dhar, beeraha, qurxinta, tubaakada iyo warshadaha kale.HPMC waxa loo qaybin karaa: dhismo, cunto iyo dawooyin.Waqtigan xaadirka ah, inta badan dhismayaasha gudaha laga soo saaro waxay ku jiraan darajada dhismaha.Marka la eego heerka dhismaha, qadarka budada budada ah waa mid aad u weyn, qiyaastii 90% waxaa loo isticmaalaa samaynta budada dhejiska ah, inta soo hartayna waxaa loo isticmaalaa sida shabidda iyo xabagta.

Waxaa jira dhowr nooc oo ah hydroxypropyl methylcellulose (HPMC).Waa maxay farqiga u dhexeeya isticmaalkooda?

HPMCwaxa loo qaybin karaa badeecooyin degdeg ah oo milmay iyo kuwo kulul, oo si degdeg ah u milmay.Marka si degdeg ah loogu kala firdhiyo biyo qabow, waxay ku baaba'aysaa biyaha.Waqtigaan, dareeruhu ma laha viscosity sababtoo ah HPMC kaliya ayaa lagu kala firdhiyey biyaha mana jirto kala dirid dhab ah.Qiyaastii 2 daqiiqo, viscosity ee dareeraha ayaa si tartiib tartiib ah u weynaaday, samaynta kolloid viscos ah oo hufan.Badeecada nooca kulul ee dhalaalaysa, marka loo eego biyaha qabow, si dhakhso ah ayaa loogu kala firdhi karaa biyo kulul oo ku baaba'a biyaha kulul.Marka heerkulku hoos ugu dhaco heerkul gaar ah, mawgu wuxuu si tartiib tartiib ah u soo baxayaa ilaa kolloid viscous ah oo hufan laga sameeyo.Nooca kulul ee kala diri kara waxaa loo isticmaali karaa oo kaliya budada suufka ah iyo hoobiye.Xabagta dareeraha ah iyo rinjiga, waxaa jiri doona ifafaale isku-duubni ah, oo aan la isticmaali karin.Waxaa lagu heli karaa codsiyo kala duwan, oo ku jira budada putty iyo hoobiye, iyo sidoo kale xabagta dareeraha ah iyo dahaarka.Ma jiraan wax diidmo ah.

Waa maxay hababka kala dirida hydroxypropyl methylcellulose (HPMC)?

Habka kala dirida biyaha kulul: Maadaama HPMC aysan ku milmin biyo kulul, HPMC-ga bilawga ah ayaa si isku mid ah loogu kala firdhi karaa biyaha kulul ka dibna si dhakhso ah ayaa loo milmi karaa inta lagu jiro qaboojinta.Laba hab oo caadi ah ayaa lagu sifeeyaa sida soo socota: 1), oo lagu rido weel Geli xaddiga loo baahan yahay ee biyaha kulul iyo kuleylka ilaa 70°C.Hydroxypropyl methylcellulose ayaa si tartiib tartiib ah loogu daray walaaq tartiib tartiib ah, HPMC-na waxay ku dul sabayn jirtay biyaha dusheeda, ka dibna slurry ayaa si tartiib tartiib ah loo sameeyay, slurry ayaa lagu qaboojiyey walaaq.2) Ku darista 1/3 ama 2/3 ee qadarka biyaha ee loo baahan yahay weelka iyo kuleylinta ilaa 70 ° C, kala firdhinta HPMC sida waafaqsan 1) si loo diyaariyo qulqulka biyaha kulul;ka dibna ku dar inta hartay ee biyaha qabow biyaha kulul In slurry, isku dar ah ayaa la qaboojiyey ka dib markii la walaaqo.Habka isku dhafka budada: budada HPMC waxaa lagu qasaa tiro badan oo ah walxo kale oo budada ah, si fiican loogu qaso qaso, ka dibna lagu milmo biyo.Waqtigaan, HPMC waa la kala diri karaa iyada oo aan la kicin, sababtoo ah gees kasta oo yar yar wuxuu leeyahay oo kaliya HPMC yar.Budadu waxay milmi doontaa isla markaaba marka biyaha la taabto.- Habkan waxaa isticmaala budada putty iyo soo saarayaasha hoobiye.Hydroxypropyl methylcellulose (HPMC) waxa loo isticmaalaa sidii dhumuc iyo haynta biyaha ee hoobiye putty.

Sidee loo xukumaa tayada hydroxypropyl methylcellulose (HPMC) si fudud oo dareen leh?

(1) Caddaan: Inkasta oo caddaanku aanu go'aamin karin in HPMC ay fududahay in la isticmaalo, iyo haddii lagu daro iftiinka inta lagu jiro habka wax soo saarka, waxay saameyn doontaa tayada.Si kastaba ha ahaatee, alaabta wanaagsan ayaa inta badan cad.(2) Wanaag: Wanaajinta HPMC guud ahaan waxay leedahay 80 mesh iyo 100 mesh, iyo 120 mesh ayaa ka yar.Sida ugu fiican ee ganaaxa, ayaa u wanaagsan guud ahaan.(3) Gudbinta: Geli hydroxypropyl methylcellulose (HPMC) biyaha si ay u sameeyaan kolloid hufan, oo fiiri daah-furnaantiisa.Sida ugu wanagsan ee la isugu gudbiyo, waa arrin aan la milmi karin..Reactor-ka toosan waxa uu leeyahay daloolin wanaagsan, reactor-ka jiifka ahina waa uu ka sii daran yahay, laakiin macnaheedu maaha in tayada reactor-ka toosan ay ka fiican tahay kiliyaha.Tayada alaabta waxaa lagu go'aamiyaa arrimo badan.(4) Cufisjiid gaar ah: Markasta oo uu weynaado cufisjiidka gaarka ah, waa uu sii cuslaadaa culeyska.Saamiga waa weyn yahay, guud ahaan sababtoo ah waxa ku jira kooxda hydroxypropyl waa sare, iyo content ee kooxda hydroxypropyl waa sare, haynta biyaha waa ka fiican.

Waa maxay cadadka hydroxypropyl methylcellulose (HPMC) ee budada putty?

Qadarka heerka dhismaha ee HPMCloo isticmaalo codsiyada wax ku oolka ah waxay ku kala duwan yihiin cimilada, heerkulka, tayada kalsiyumka dambaska maxalliga ah, caanaha budada ah iyo "tayada loo baahan yahay macaamiisha".Guud ahaan, inta u dhaxaysa 4 kg ilaa 5 kg.Tusaale ahaan: budada putty meel qabow, badankoodu waxay dhigaan 5 kg;Aagga kulul inta badan waa 5 kg xagaaga iyo 4.5 kg jiilaalka.

Waa maxay viscosity ee hydroxypropyl methylcellulose (HPMC)?

Budada darbigu guud ahaan waa 100,000, hoobiye engegan ayaa loo baahan yahay inuu sareeyo.Waa lagama maarmaan in la isticmaalo 150,000.Waxaa intaa dheer, doorka ugu muhiimsan ee HPMC waa ilaalinta biyaha, oo ay ku xigto dhumucdi.In budada putty, ilaa iyo inta haynta biyuhu wanaagsan yihiin, viscosity waa hoose (70,000-80,000), sidoo kale waa suurtagal.Dabcan, viscosity waa ka weyn yahay, haynta biyaha qaraabo ayaa ka fiican.Marka viscosity-ku dhaafo 100,000, saamaynta maan-jiidka ee haysashada biyuhu aad uma weyna.

Maxay yihiin tilmaamayaasha farsamada ugu muhiimsan ee hydroxypropyl methylcellulose (HPMC)?

Waxyaabaha ku jira Hydroxypropyl iyo viscosity, isticmaalayaasha badankoodu waxay ka walaacsan yihiin labadan tilmaame.Haddii maadada hydroxypropyl ay sareeyso, haynta biyaha ayaa guud ahaan ka wanaagsan.Viscosity, haynta biyaha, qaraabo (halkii ay ahaan lahayd mid dhammaystiran), iyo muuqasho sare, oo ku fiican hoobiye sibidhka.

Waa maxay alaabta ceeriin ee ugu muhiimsan hydroxypropyl methylcellulose (HPMC)?

Waxyaabaha ugu muhiimsan ee ceeriin ee hydroxypropyl methylcellulose (HPMC): suuf la safeeyey, methyl chloride, propylene oxide, alaabta kale ee ceeriin, sida soodhaha caustic, acid, toluene, isopropanol.

Waa maxay doorka ugu weyn ee HPMC ee codsiga budada putty?

HPMC waxay ka ciyaartaa door dhumucdi, haynta biyaha iyo dhisidda budada suufka ah.Dhumucda: Cellulose waa la dhumucdi karaa si loo hakiyo, u ilaali xalka si siman, oo iska caabiso sag.Haysashada biyaha: Budada suufka ah ayaa si tartiib ah loo engejiyaa, iyo kaalshiyamka dambaska ah ee kaalshiyamku waxay ka falceliyaan ficilka biyaha.Dhismaha: Cellulose waxay leedahay saameyn saliideed, taas oo ka dhigi karta budada suufka ah inay leedahay shaqo fiican.HPMC kama qayb qaadato fal-celin kiimikaad oo kaliya waxay ciyaartaa door taageero.Budada suufka ah ee biyaha leh, derbiga dusheeda, waa fal-celin kiimikaad.Sababtoo ah samaynta walxo cusub, budada dhejiska ee derbiga ayaa laga saaraa derbiga, oo la dhigo budo, dib loo isticmaalo, ma shaqeyn doonto, sababtoo ah walax cusub ayaa la sameeyay (calcium carbonate).).Qaybaha ugu muhiimsan ee budada calcium ash waa: Ca(OH) 2, isku dar ah CaO iyo qadar yar oo CaCO3, CaO+H2O=Ca(OH)2-Ca(OH)2+CO2=CaCO3+H2O ash calcium in biyaha iyo hawada Iyadoo la raacayo ficilka CO2, kaalshiyam carbonate ayaa la sameeyay, HPMCna waxay haysaa oo kaliya biyaha, waxay caawisaa falcelinta kalsiyumka dambaska ah, kamana qaybqaadato falcelin lafteeda. 

HPMC waa unug unug-cellulose ah oo aan ionic ahayn, markaa waa maxay non-ion?

Guud ahaan marka la eego, aan-ion waa shay aan ku jirin biyaha oo aan lahayn ion.Ionization-ka waxa loola jeedaa habka uu elektrolyt-ku u kala go'o ion si xor ah u dhaqdhaqaaqaya oo ku jira dareere gaar ah sida biyaha ama khamriga.Tusaale ahaan, milixda la cuno maalin kasta, sodium chloride (NaCl), ayaa ionized si ay u soo saarto sodium ions (Na+) si togan loo dallaco iyo chloride (Cl) oo si taban loo dallaco.Taas macnaheedu waxa weeye, HPMC waxaa lagu dhejiyaa biyaha mana kala qaybinayso aoniska la soo rogay, laakiin waxay u jirtaa qaabka molecules.

Waa maxay heerkulka jelka ee hydroxypropyl methylcellulose?

Heerkulka jel ee HPMC waxa uu la xidhiidha maadada methoxy.Maaddada methoxy-ka ee hooseeysa, ayaa sareeysa heerkulka jelka.

Budada budada ah ma la leedahay wax xidhiidh ah HPMC?

Budada budada ah waxay inta badan la xiriirta tayada kaalshiyamka cawl, wax yarna kuma laha HPMC.Kaalshiyamta hoose ee kalsiyumka dambaska ah iyo saamiga aan habboonayn ee CaO iyo Ca(OH)2 ee kaalshiyamka dambaska ayaa sababi doona luminta budada.Haddii ay la xiriirto HPMC, markaa haddii haynta biyaha ee HPMC ay liidato, waxay sidoo kale sababi doontaa luminta budada.

Waa maxay faraqa u dhexeeya nooca degdegga ah ee biyaha qabow iyo nooca kulul ee hydroxypropyl methylcellulose ee habka wax soo saarka?HPMC nooca biyaha qabow ee degdega ah ayaa dusha lagu daweeyaa glioxal , waxaana si dhakhso ah loogu firdhiyaa biyo qabow, laakiin dhab ahaantii lama milmin.Marka viscosity-ku kor u kaco, wuu milmaa.Qaabka kulul ee milmi kara dusha laguma daweeyo glioxal.Marka qadarka glycoxal uu weyn yahay, kala firdhisyadu waa dhakhso, laakiin viscosity waa gaabis. 

Waa maxay urta hydroxypropyl methylcellulose (HPMC)?

HPMC-da ay soo saarto habka dareeraha waxay u isticmaashaa toluene iyo aalkolada isopropyl sida dareere ahaan.Haddii maydhistu aanay aad u fiicneyn, waxaa jiri doona xoogaa dhadhamin ah.

Sidee loo doortaa hydroxypropyl methylcellulose (HPMC) saxda ah ujeedooyin kala duwan?

Codsiga budada putty: shuruudu way yar tahay, viscosity waa 100,000, waa ok, waxa muhiimka ah waa in si fiican loo ilaaliyo biyaha.Codsiga hoobiye: shuruudaha sare, viscosity sare, 150,000 ayaa ka fiican.Codsiga xabagta: Waxay u baahan tahay nooca degdega ah, viscosity sare.

Waa maxay magaca hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose, HydroxypropylMethylCellulose Soo gaabinta: HPMC ama MHPC oo loo yaqaan: hypromellose;cellulose hydroxypropyl methyl ether;Hypromellose, ether cellulose, 2-hydroxypropylmethyl cellulos eether.Cellulose hydroxypropyl methyl ether, Hyprolose.

Codsiga HPMC ee budada putty, waa maxay sababta xumbo ku jirta budada putty?

HPMC waxay ka ciyaartaa door dhumucdi, haynta biyaha iyo dhisidda budada suufka ah.Ha ka qayb qaadan wax falcelin ah.Sababta xumbo: 1, biyuhu aad bay u badan yihiin.2, lakabka hoose ma qallajin, kaliya ku xoq lakabka sare, sidoo kale way fududahay in la xumbo.　

Darbiga gudaha iyo dibadda ee caanaha budada ah?

Budada derbiga gudaha: Calcium culus 800KG calcium cawl 150KG (starch ether, cagaar saafi ah, ciidda penmine, citric acid, polyacrylamide, iwm. si habboon ayaa loo dooran karaa in lagu daro)

Budada derbiga dibadda ah: sibidhka 350KG, calcium culus 500KG, ciid quartz 150KG, budada cinjirka 8-12KG, ether cellulose 3KG, istaarijka ether 0.5KG, fiber alwaax 2KG

Waa maxay faraqa u dhexeeya HPMC iyo MC?

MC waa methyl cellulose.Ka dib markii suufka la sifeeyay lagu daaweeyay alkali, chloromethane ayaa loo isticmaalaa sidii wakiilka etherifying, iyo falcelin taxane ah ayaa la sameeyaa si loo diyaariyo etherka cellulose.Darajada beddelka guud ahaan waa 1.6 ilaa 2.0, heerka beddelkuna wuu ka duwan yahay iyadoo ku xidhan milanka.Waxay ka tirsan tahay nonionic cellulose ether.

(1) Haysashada biyaha ee methyl cellulose waxay kuxirantahay qadarka isugeynta, viscosity, ganaaxyada walxaha iyo heerka kala dirida.Guud ahaan, qadarka wax-ku-darku waa weyn yahay, ganaaxu waa yar yahay, iyo viscosity waa weyn yahay, heerka haynta biyuhuna waa sarreeyaa.Qadarka dheeriga ah ayaa saamaynta ugu weyn ku leh heerka haynta biyaha, iyo heerka viscosity-ku maaha mid u dhigma heerka haynta biyaha.Heerka kala diriddu waxay inta badan ku xiran tahay heerka wax ka beddelka dusha sare ee qaybaha cellulose iyo ganaaxyada qaybaha.Waxaa ka mid ah ethers-ka cellulose-ka ee kor ku xusan, methylcellulose iyo hydroxypropylmethylcellulose waxay leeyihiin heer biyo-hayn ah oo sarreeya.

(2) Methylcellulose waxay ku milmaysaa biyo qabow, wayna adagtahay in lagu milmo biyo kulul.Xalka aqueous waa mid aad u deggan inta u dhaxaysa pH = 3 ~ 12.Waxay leedahay ku habboonaanta istaarijka, xanjada iyo waxyaabo kale oo badan.Marka heerkulku gaaro heerkulka gelation-ka, ifafaale gelation ayaa dhacaya.

(3) Isbeddelka heerkulku wuxuu si dhab ah u saameyn doonaa heerka haynta biyaha ee methyl cellulose.Guud ahaan, marka uu heerkulku sarreeyo, way ka sii xumaanaysaa haynta biyaha.Haddii heerkulka hoobiye uu ka sarreeyo 40 ° C, haynta biyaha ee methyl cellulose ayaa si weyn u xumaan doonta, taas oo si weyn u saameynaysa shaqada hoobiye.

(4) Methyl cellulose waxay saameyn weyn ku leedahay shaqada iyo ku dhejinta hoobiye."Adhesiveness" halkan waxa ay tilmaamaysaa xoogga xabagta ee laga dareemayo inta u dhaxaysa qalabka codsiga shaqaalaha iyo darbiga derbiga, taas oo ah iska caabbinta dhogorta hoobiye.Ku dheggan waa weyn yahay, iska caabbinta dhogorta hoobiyeyaasha waa weyn tahay, xoogga uu u baahan yahay qofka shaqaalaha ah marka la isticmaalayo ayaa sidoo kale ah mid weyn, iyo awoodda shaqo ee hoobiye ayaa liidata.

Ku-xidhka Methylcellulose waa dhex dhexaad ka ah alaabta etherka cellulose.HPMC waa hydroxypropylmethylcellulose, kaas oo ah unug nonionic cellulose isku qasan oo lagu diyaariyey taxane falcelin ah iyadoo la isticmaalayo acetal oxide iyo methyl chloride sida wakiilka etherifying ka dib alkalization of suuf la safeeyey.Darajada beddelka guud ahaan waa 1.2 ilaa 2.0.Dabeecaddeedu way ka duwan tahay iyadoo ku xidhan saamiga maadada methoxyl iyo ka kooban hydroxypropyl.

(1) Hydroxypropyl methylcellulose si fudud ayay ugu milmi kartaa biyo qabow, waxaana laga yaabaa inay adkaato in lagu milmo biyo kulul.Si kastaba ha ahaatee, heerkulkeeda gelation ee biyaha kulul aad ayuu uga sarreeyaa kan methyl cellulose.Kala dirida biyaha qabow ayaa sidoo kale aad uga fiican methyl cellulose.-

(2) Viscosity of hydroxypropylmethylcellulose waxay la xiriirtaa culeyska kelliga ah, iyo viscosity waa sarreeyaa marka miisaanka kelli uu weyn yahay.Heerkulku wuxuu kaloo saameeyaa viscosity-kiisa, heerkulku kor buu u kacaa, mawjadaha ayaa yaraada.Si kastaba ha ahaatee, viscositykeedu wuxuu leeyahay heerkul ka hooseeya methyl cellulose.Xalkeedu wuxuu ku xasilayaa heerkulka qolka.

(3).Caustic soodhaha iyo biyaha lime wax saameyn ah kuma laha hantidooda, laakiin alkali waxa ay dardar gelisaa heerka kala diristooda waxayna kordhisaa viscosity.Hydroxypropyl methylcellulose waxay leedahay xasillooni milixda guud, laakiin marka xoogga milixdu uu sarreeyo, viscosity ee xalka hydroxypropyl methylcellulose wuxuu u eg yahay inuu kordho.

(4) Haysashada biyaha ee hydroxypropyl methylcellulose waxay kuxirantahay qadarka isugeynta, viscosity, iwm.

(5) Hydroxypropyl methylcellulose waxaa lagu qasi karaa iskudarka polymer-ka ee biyaha-milmi kara si loo sameeyo labbis, xalka viscosity sare.Sida khamriga polyvinyl, ether istaarijka, xanjada khudradda iyo wixii la mid ah.

(6) Hydroxypropyl methylcellulose ayaa ku dheggan hoobiye ka sarreeya methyl cellulose.

(7) Hydroxypropyl methylcellulose waxay leedahay iska caabbinta enzymatic ka wanaagsan methylcellulose, xalkeeduna way ka yar tahay in uu enzymatic ahaan hoos u dhaco marka loo eego methylcellulose.

Viscosity HPMC iyo xiriirka heerkulka, maxaa habboon in fiiro gaar ah loo yeesho codsiyada la taaban karo?

Viscosity ee HPMC waa ka duwanaansho u dhiganta heerkulka, taas oo ah, viscosity kordho heerkulka hoos u dhaca.Viscosity ee badeecada aan inta badan tixraacno waa natiijada tijaabinta 2% xal aqueous ah heerkulka 20 darajo Celsius.Codsiyada wax ku oolka ah, meelaha leh farqiga heerkulka weyn ee u dhexeeya xagaaga iyo jiilaalka, waa in la ogaadaa in lagu talinayaa in la isticmaalo viscosity yar xilliga jiilaalka, taas oo aad ugu habboon dhismaha.Haddii kale, marka heerkulku hooseeyo, viscosity of cellulose ayaa kordhi doona, iyo marka la xoqo, dareemada gacanta ayaa noqon doonta mid culus.Viscosity dhexdhexaad ah: 75000-100000 Inta badan loo isticmaalo putty Sababta: haynta biyaha viscosity sare: 150000-200000 waxaa inta badan loo isticmaalaa polystyrene granule insulation hoobiye hoobiye iyo vitrified microbead insulation hoobiye.Sababta: viscosity sare, hoobiye ma fududa inuu dhaco Haa, sag, dhismo la hagaajiyay.Laakiin guud ahaan, heerka sare ee viscosity, ayaa si fiican u haynta biyaha, sidaas darteed dhir badan oo qallalan oo qallalan ayaa tixgeliya qiimaha, beddelka cellulose dhexdhexaad ah iyo mid hooseeya oo leh cellulose dhexdhexaad ah (75000-100000).(20000-40000) si loo yareeyo tirada lagu daray.