1, waa maxay isticmaalka ugu muhiimsan ee hydroxypropyl methyl cellulose (HPMC)?
HPMC waxaa si weyn loogu isticmaalaa qalabka dhismaha, dahaarka, xabagta synthetic, ceramics, daawada, cuntada, dunta, beeraha, qurxinta, tubaakada iyo warshadaha kale. HPMC waxa loo qaybin karaa: darajada dhismaha, heerka cuntada iyo darajada caafimaadka iyadoo la isticmaalayo. Waqtigan xaadirka ah, inta badan darajada dhismaha gudaha, heerka dhismaha, qiyaasta budada putty waa weyn tahay, qiyaastii 90% ayaa loo isticmaalaa in lagu sameeyo budada, inta soo hartay waxaa loo isticmaalaa in lagu sameeyo hoobiye sibidhka iyo xabagta.
2, hydroxypropyl methyl cellulose (HPMC) waxaa loo qaybiyaa dhowr, waa maxay farqiga u dhexeeya isticmaalkiisa?
HPMC waxaa loo qaybin karaa nooca xal degdeg ah iyo kuwa kulul, alaabta degdega ah, in biyo qabow si degdeg ah u kala firdhiyey, baaba'aan in biyaha, wakhtigan dareere ma laha viscosity, sababtoo ah HPMC kaliya ku kala firdhiyey biyaha, ma kala diri dhab ah. Qiyaastii 2 daqiiqo, viscosity ee dareeraha ayaa si tartiib ah u kordheysa, samaynta kolloid viscos ah oo hufan. Alaabooyinka kulul ee kulul, biyaha qabow, si degdeg ah ayaa loogu kala firdhi karaa biyo kulul, baaba'aan biyaha kulul, marka heerkulku hoos u dhaco heerkul gaar ah, viscosity si tartiib ah ayaa u muuqda, ilaa sameynta kolloid viscous hufan. Xalka kulul waxaa loo isticmaali karaa oo kaliya budada putty iyo hoobiye, xabagta dareeraha ah iyo rinjiga, waxaa jiri doona dhacdo kooxeed, lama isticmaali karo. MUUQAALKA Xalka degdega ah, kala duwanaanshaha codsigu waa wax yar oo ballaadhan, oo lagu caajisay budada ilmaha iyo hoobiye, iyo koollada dareeraha ah iyo dahaarka, dhammaan waa la isticimaalaa, la'aanteed waxa diidaya.
3, hydroxypropyl methyl cellulose (HPMC) hababka milmi leeyihiin kuwa?
– J: Habka kala dirida biyaha kulul: sababtoo ah HPMC kuma milmaan biyo kulul, markaa HPMC hore si siman ayaa loogu firdhi karaa biyaha kulul, ka dibna si dhakhso ah ayaa loo milmaa marka la qaboojinayo, laba hab oo caadi ah ayaa lagu tilmaamay sida soo socota: 1), weelka ku jira weelka. cadadka biyaha kulul ee loo baahan yahay, oo kuleyl ilaa 70 ℃. Si tartiib ah ugu dar hydroxypropyl methylcellulose hoostiisa si tartiib tartiib ah u walaaqaya, HPMC waxay bilowday inay sabbayso biyaha dushooda, ka dibna si tartiib ah u samee slurry, hoos walaaqaya qaboojinta slurry. 2), ku dar qadarka loo baahan yahay ee 1/3 ama 2/3 biyaha weelka, iyo kulaylka 70 ℃, marka loo eego habka 1), kala firdhisanaanta HPMC, diyaarinta slurry biyaha kulul; Ka dibna ku dar inta hartay ee biyaha qabow slurry kulul, walaaq oo qabooji isku dar ah. Habka isku dhafka budada: budada HPMC iyo tiro badan oo ah walxaha kale ee budada ah, oo si fiican loogu qaso blender, ka dib marka lagu daro biyaha si ay u milaan, ka dibna HPMC way milmi kartaa wakhtigan, laakiin maaha isku-duubni, sababtoo ah gees kasta oo yar, kaliya wax yar oo budada HPMC ah. , biyuhu isla markiiba way milmi doonaan. – Shirkadaha wax-soo-saarka budada ah iyo hoobiyeyaasha ayaa isticmaalaya habkan. Hydroxypropyl METHYL cellulose (HPMC) waxa loo isticmalaa sidii wakiilka dhumucdi iyo haynta biyaha ee hoobiye budada putty.
4, sidee u fudud oo dareen leh si loo go'aamiyo tayada hydroxypropyl methyl cellulose (HPMC)?
– Jawaab: (1) Caddaan: in kasta oo aan caddaanku go’aamin karin in HPMC ay ku wanaagsan tahay in la isticmaalo iyo in kale, haddii lagu daro habka wax soo saarka ee walxaha caddaynta, waxay saamaynaysaa tayada. Si kastaba ha ahaatee, alaabta wanaagsan ayaa inta badan cad. (2) Ganaaxsanaanta: Ganaaxa HPMC guud ahaan 80 mesh iyo 100 mesh, 120 ujeedo kayar, Hebei HPMC inta badan mesh 80, ugu fiicnaanta, guud ahaan way fiicantahay. (3) gudbinta: hydroxypropyl methyl cellulose (HPMC) ee biyaha, samaynta kolloid hufan, arag gudbintiisa, gudbinta weyn, ka sii wanagsan, walxaha aan la milmi karin gudaha. Permeability ee reactor toosan guud ahaan waa wanaagsan yahay, reactor jiifta waa ka sii daran, laakiin ma muujin karaan in tayada wax soo saarka reactor toosan waa ka fiican yahay in wax soo saarka reactor toosan, tayada wax soo saarka waxaa lagu go'aamiyaa arrimo badan. (4) cuf-jiid gaar ah: hadba inta uu bato cufis-jiidad gaar ah, waa hadba inta uu sii cuslaado. Si ka sii muhiimsan, guud ahaan sababtoo ah waxa ku jira hydroxypropyl waa sarreeyaa, maadada hydroxypropyl ayaa sarreeya, ka dibna haynta biyaha ayaa ka fiican.
5, hydroxypropyl methyl cellulose (HPMC) ee qadarka budada putty?
- Jawaab: HPMC ee codsiga dhabta ah ee qiyaasta, by deegaanka cimilada, heerkulka, tayada dambaska calcium maxaliga ah, caanaha budada putty iyo "shuruudaha macaamiisha ee tayada", iyo waxaa jira kala duwan. Guud ahaan, qiyaasta biyaha ee adkaysiga u ah 4 kg - 5 kg inta u dhaxaysa. Tusaale ahaan: budada budada ah ee Beijing, inta badan waxay dhigtaa 5 kg; Guizhou, intooda badani waa 5 kg xagaaga iyo 4.5 kg jiilaalka. Tirada Yunnan waa mid yar, guud ahaan 3 kg -4 kg iyo wixii la mid ah. Iyo qiyaasta HPMC ee 821 putty guud ahaan waa 2 ~ 3 kg.
6, hydroxypropyl methyl cellulose (HPMC) intee in le'eg bay viscosity ku habboon tahay?
– Jawaab: Ku caajiso budada GUUD ee ILMAHA 100 KUN OK, SHURUUDAHA HOOYIGA KU JIRTA WAA KA DHEERA, RABAA 150 KUN OO AWOOD LAGU ISTICMAALO. Waxaa intaa dheer, doorka ugu muhiimsan ee HPMC waa haynta biyaha, oo ay ku xigto dhumucdi. In budada putty, ilaa iyo inta haynta biyuhu ay wanaagsan yihiin, viscosity waa hooseeyaa (7-80 kun), sidoo kale waa suurtogal, dabcan, maqaarku wuu ka weyn yahay, haynta biyaha ee qaraabada ah ayaa ka sii fiican, marka maqaarku ka badan yahay 100 kun, viscosity ayaa saameyn yar ku leh haynta biyaha.
7, hydroxypropyl methyl cellulose (HPMC) waa maxay tilmaamayaasha ugu muhiimsan ee farsamada?
J: Waxa ku jira Hydroxypropyl iyo viscosity, kuwaas oo ah waxa isticmaalayaasha badankoodu ay ka walaacsan yihiin. Waxa ku jira Hydroxypropyl waa sarreeyaa, haynta biyaha ayaa guud ahaan ka wanaagsan. Viscosity, haynta biyaha, qaraabo (laakiin aan dhammaystirnayn) ayaa sidoo kale ka fiican, iyo viscosity, ee hoobiye sibidhka si fiican u isticmaal qaar ka mid ah.
8, hydroxypropyl methyl cellulose (HPMC) alaabta ceeriin ee ugu muhiimsan waa maxay?
- Jawaab: hydroxypropyl methyl cellulose (HPMC) ee alaabta ceeriin ee ugu muhiimsan: suuf la safeeyey, chloromethane, propylene oxide, alaabta kale ee cayriin waxay leeyihiin, alkali kiniinka, acid, toluene, khamriga isopropyl, iwm.
9, HPMC ee codsiga budada putty, waa maxay doorka ugu muhiimsan, ha ahaato kiimiko?
HPMC oo ku jira budada putty, dhumucyada, haynta biyaha iyo dhismaha saddex door. Dhumucda: Cellulose waa la dhumucdi karaa si uu u ciyaaro ganaax, si xalka loo ilaaliyo labbiska kor iyo hoos isla doorka, ka laadlaad socodka ka hortagga. Haysashada biyaha: ka dhig budada suufka ah si tartiib tartiib ah u engejin, falcelin dambas kaalshiyam ah oo hoos yimaada ficilka biyaha. Dhismaha: Cellulose waxay leedahay saameyn saliideed, waxay ka dhigi kartaa budada putty waxay leedahay dhismo wanaagsan. HPMC kama qayb qaadato falcelinta kiimikaad, kaliya waxay ciyaartaa door caawimo ah. Budada lagu daray biyo, derbiga dusheeda, waa falcelin kiimikaad, sababtoo ah waxaa jira abuurista walxo cusub, budada suufka ah ee derbiga ka soo degaya derbiga, oo la dhigo budo, ka dibna la isticmaalo, hadda ma jirto, sababtoo ah waxay samaysay a walxo cusub (kalsiyum carbonate). Qaybaha ugu muhiimsan ee budada calcium cawl waa: Ca (OH) 2, CaO iyo qadar yar oo CaCO3 isku dar ah, CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O dambaska calcium ee biyaha iyo hawada hoos ficilka CO2, formation of calcium carbonate, iyo HPMC kaliya haynta biyaha, kaalshiyam dambaska calcium ka fiican falcelin, iyada u gaar ah ma ka qayb falcelin kasta.
10, HPMC non-ionic cellulose ether, ka dibna waa maxay non-ionic?
J: Guud ahaan marka loo hadlo, nonionic waa walax biyaha ku jira oo aan ionizes. Ionization waa habka ay elektrolytka u kala soocdo si xor ah u dhaqdhaqaajinaya aoniska ee dareeraha gaarka ah, sida biyaha ama khamriga. Tusaale ahaan, sodium chloride (NaCl), milixda aan cunno maalin kasta, waxay ku milantaa biyaha waxayna ionizes si ay u soo saarto sodium ions (Na+) oo si togan loo dallaco iyo chloride ions (Cl) oo si xun loo dallaco. Si kale haddii loo dhigo, HPMC ee biyaha ku jira ma kala qaybinayso aoniska la soo rogay, laakiin waxay u jiraan sida molecules.
11, hydroxypropyl methylcellulose heerkulka jel iyo waxa la xiriira?
– Jawaab: Heerkulka jel ee HPMC waxa uu la xidhiidhaa waxa ku jira methoxy. Maaddada methoxy-ka ee hooseeysa, ayaa sareeysa heerkulka jelka.
12. Ma jiraa wax xidhiidh ah oo ka dhexeeya budada-putty iyo HPMC?
– Jawaab: budada budada ah ee la galiyay iyo tayada kaalshiyamku waxay leeyihiin xidhiidh aad u wanaagsan, HPMC-na ma laha xidhiidh aad u badan. Maaddooyinka calcium hooseeya ee kalsiyumka iyo saamiga CaO, Ca(OH)2 ee dambaska kaalshiyamku kuma habboona, waxay keeni doontaa hoos u dhac budo ah. Haddii ay wax ku leedahay HPMC, ka dibna haynta biyaha ee HPMC waa mid liidata, waxay sidoo kale keeni doontaa hoos u dhac budada ah. Sababo gaar ah dartood, fadlan eeg su'aasha 9
13, hydroxypropyl methylcellulose nooca biyaha qabow iyo nooca kulul ee habka wax soo saarka, waa maxay farqiga u?
– A: HPMC nooca biyo qabow waa ka dib daawaynta dusha glioxal, ku riday biyo qabow si degdeg ah u kala firdhiyey, laakiin aan runtii kala diri, viscosity kor, waa kala diri. Nooca kulaylka-milmi kara dusha laguma daawayn glioxal. Mugga glyoxal waa weyn yahay, kala firdhisyadu waa dhakhso, laakiin viscosity waa gaabis, mugga waa yar yahay, liddi ku ah.
14, hydroxypropyl methyl cellulose (HPMC) waxay leedahay urta waxa socda?
- Jawaab: HPMC oo lagu soo saaro habka dareeraha waxay ka samaysan tahay toluene iyo aalkolada isopropyl sida dareere ahaan. Haddi dhaqiddu aysan aad u fiicneyn, waxaa jiri doona xoogaa dhadhamin ah.
15, isticmaalka kala duwan, sida loo doorto saxda ah hydroxypropyl methyl cellulose (HPMC)?
– Jawaab: Codsiga budada-shubaca: Shuruuda waa ka yar tahay, maqaarku waa 100 kun, waa OK, muhiimadu waa in biyaha si fiican loo ilaaliyo. Codsiga hoobiye: shuruudu way ka sareysaa, shuruuduhu waa viscosity sare, 150 kun waa inay ka sii fiicnaadaan. Codsiga xabagta: waxay u baahan yihiin alaab degdeg ah, viscosity sare.
16, hydroxypropyl methylcellulose waa maxay magaca?
A: Hydroxypropyl Methyl Cellulose, Ingiriis: Hydroxypropyl Methyl Cellulose soo gaabinta: HPMC ama MHPC alias: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC ee codsiga budada putty, budada budada putty waa maxay sababta?
HPMC oo ku jira budada putty, dhumucyada, haynta biyaha iyo dhismaha saddex door. Aan ka qayb qaadan wax falcelin ah. Sababta goobooyinku: 1, biyuhu aad bay u kordhiyeen. 2, hoose ma qalalan, on sare iyo xoqin lakabka, sidoo kale ay fududahay in la xumbo.
18. Caanaha budada ah ee loo yaqaan 'putty powder' ee gidaarada gudaha iyo dibadda?
- Jawaab: budada putty ee biyaha u adkeysaneysa ee gidaarka gudaha: 750 ~ 850KG ee calcium culus, 150 ~ 250KG ee calcium cawl, 4 ~ 5KG ether cellulose, iyo 1 ~ 2KG of budada alkohol polyvinyl si habboon loogu dari karaa; Budada derbiga dibadda ah: sibidh cad 350KG, calcium culus 500-550kg, calcium cawl 100-150kg, budada cinjirka 8-12kg, cellulose ether 5KG, alwaax fiber 3KG.
19. Waa maxay faraqa u dhexeeya HPMC iyo MC?
- MC ee methyl cellulose, waa suufka la safeeyey ka dib daawaynta alkali, oo leh methane chloride sida wakiilka etherification, iyada oo loo marayo falcelin taxane ah iyo ether cellulose. Guud ahaan, heerka beddelku waa 1.6 ~ 2.0, iyo milmayntu waxay ku kala duwan tahay heerka beddelka. Waa eter cellulose aan ionic ahayn.
(1) Haysashada biyaha ee methyl cellulose waxay kuxirantahay qadarka isugeynta, viscosity, ganaaxyada walxaha iyo xawaaraha kala dirida. Guud ahaan ku dar qadar weyn, ganaax yar, viscosity, heerka haynta biyaha sare. Waxaa ka mid ah, qadarka lagu daray heerka haynta biyaha ayaa leh saameynta ugu weyn, viscosity iyo heerka xajinta biyaha ma aha mid u dhiganta xiriirka. Heerka kala diriddu waxay inta badan ku xiran tahay heerka wax ka beddelka dusha sare iyo ganaaxyada walxaha unugyada cellulose. Eter-ka cellulose-ka sare, methyl cellulose iyo hydroxypropyl methyl cellulose heerka haynta biyaha ayaa ka sarreeya.
(2) Methyl cellulose waxaa lagu milmi karaa biyo qabow, biyaha kulul ee la milmay waxay la kulmi doonaan dhibaatooyin, xalkeeda aqueous ee pH = 3 ~ 12 waa mid aad u deggan. Waxay leedahay ku habboonaanta istaarijka, xanjo guanidine iyo waxyaabo badan oo surfactants ah. Gelation-ku wuxuu dhacaa marka heerkulku gaaro heerkulka gelation.
(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 ℃, haynta biyaha ee methyl cellulose aad ayay uga sii dari doontaa, taasoo saameyn weyn ku yeelan doonta dhismaha hoobiye.
(4) Methyl cellulose waxay saameyn muuqata ku leedahay dhismaha iyo ku dhejinta hoobiye. Halkan, “ku dheggan” waxa ay tilmaamaysaa xoogga xabagta ee laga dareemayo inta u dhaxaysa qalabka arjiga shaqaalaha iyo substrate-ka gidaarka, taas oo ah iska caabbinta dhogorta hoobiyeyaasha. Hantida koollada waa weyn tahay, caabbinta dhogorta ee hoobiye waa weyn tahay, iyo xoogga looga baahan yahay shaqaalaha ee habka isticmaalka ayaa sidoo kale weyn, sidaas darteed hantida dhismaha ee hoobiye ayaa liidata.
Badeecooyinka ether-ka cellulose, adhesion methyl cellulose waa heer dhexdhexaad ah. HPMC oo loogu talagalay hydroxypropyl methyl cellulose, waxay ka samaysan tahay suuf la safeeyey ka dib daawaynta alkalization, oo leh propylene oxide iyo chloromethane sida wakiilka etherifying, iyada oo loo marayo falcelin taxane ah oo laga sameeyay cellulose aan ionic ahayn ether isku dhafan. Darajada beddelka guud ahaan waa 1.2 ~ 2.0. Hantideeda waxaa saameeya saamiga maadada methoxy iyo ka kooban hydroxypropyl.
(1) hydroxypropyl methyl cellulose oo ku milma biyo qabow, biyaha kulul ee la milmay waxay la kulmi doonaan dhibaatooyin. Laakiin heerkulkeeda gelation ee biyaha kulul aad ayuu uga sarreeyaa kan methyl cellulose. milanka methyl cellulose ee biyaha qabow ayaa sidoo kale si weyn loo hagaajiyay.
(2) viscosity of hydroxypropyl methyl cellulose waxay la xiriirtaa miisaankeeda kelli, iyo miisaanka kelli ee weyn waa viscosity sare. Heerkulka ayaa sidoo kale saameyn doona viscosity-kiisa, heerkulka kor u kaca, viscosity ayaa hoos u dhacaya. Si kastaba ha ahaatee, viscosity ee heerkulka sare ayaa ka hooseeya kan methyl cellulose. Xalku wuu xasilloon yahay marka lagu kaydiyo heerkulka qolka.
(3). Soodhaha caustic iyo biyaha lime wax saameyn ah kuma laha hantidooda, laakiin alkali waxay dardar gelin kartaa heerka kala diristeeda waxayna wanaajin kartaa viscosity ee biinka. Hydroxypropyl methyl cellulose waxay leedahay xasillooni milixda guud, laakiin marka xoogga milixdu uu sarreeyo, viscosity of hydroxypropyl methyl cellulose xalka wuxuu u janjeeraa inuu kordho.
(4) Haysashada biyaha ee hydroxypropyl methyl cellulose waxay kuxirantahay qadarka lagu daray, viscosity, iwm., isla qadarka xajinta biyaha ayaa ka sarreeya methyl cellulose.
(5). Sida khamriga polyvinyl, ether istaarijka, xanjada dhirta iyo wixii la mid ah.
(6) Ku-dhejinta hydroxypropyl methyl cellulose ee dhismaha hoobiye ayaa ka sarreeya kan methyl cellulose.
(7) hydroxypropyl methyl cellulose waxay leedahay iska caabin enzymatic ka fiican marka loo eego methyl cellulose, iyo suurtogalnimada hoos u dhigista enzymatic ee xalkeeda ayaa ka hooseeya kan methyl cellulose.
20, xiriirka ka dhexeeya viscosity iyo heerkulka HPMC, taas oo ay tahay in fiiro gaar ah in codsiga la taaban karo?
– Jawaab: Viscosity ee HPMC waa ka soo horjeeda u dhigma heerkulka, taas oo ah in la yidhaahdo, viscosity kordhiyaa hoos u heerkulka. Marka aan ka hadalno viscosity ee alaabta, waxaan ula jeednaa natiijada cabbiraadda 2% xal aqueous heerkulka 20 darajo Celsius. Codsiga wax ku oolka ah, meelaha leh farqiga heerkulka weyn ee u dhexeeya xagaaga iyo jiilaalka, fiiro gaar ah waa in la bixiyaa talada si loo isticmaalo viscosity yara hooseeya xilliga jiilaalka, taas oo aad ugu habboon dhismaha. Haddii kale, marka heerkulku hooseeyo, viscosity of cellulose ayaa kordhi doona, marka la xoqo, dareemo culeys ayaa noqon doona. Viscosity dhexdhexaad ah: 75000-100000 waxaa inta badan loo isticmaalaa sabab putty: haynta biyaha wanaagsan viscosity sare: 150000-200000 waxaa inta badan loo isticmaalaa Qurub polystyrene kulaylka xabagta hoobiye alaabta budo ah iyo kuul galaas ah hoobiye xarkaha kulaylka. Sababta: viscosity sare, hoobiye ma fududa in la tuuro dambaska iyo qulqulka qulqulka, hagaajinta dhismaha. Laakiin guud ahaan marka la hadlayo, heerka sare ee viscosity, ayaa si fiican u haynta biyaha noqon doontaa, sidaas darteed warshado badan oo qalalan oo qalalan ayaa tixgeliya kharashka, oo leh cellulose viscosity dhexdhexaad ah (75,000-100000) si loo beddelo cellulose hooseeya (20,000-40000) si loo yareeyo tirada ku darso.
Waqtiga boostada: Febraayo-05-2024