Tiantai Cellulose Co., Ltd waa Hydroxypropyl methyl cellulose HPMC soo saaraha warshad soo saaraha Shiinaha, oo leh magaca sumadda tayada sare leh ee QualiCell® Cellulose ethers.
Fiirin degdeg ah ee hydroxypropyl methylcellulose HPMC
Mid, waa maxay isticmaalka ugu weyn ee hydroxypropyl methyl cellulose?
HPMC waxa si weyn loogu isticmalaa agabka dhiska, dahaarka, resins-ka synthetic, ceramics, dawooyinka, cuntada, dunta, beeraha, waxyaalaha la isku qurxiyo, tubaakada iyo warshado kale. HPMC waxa loo qaybin karaa darajada warshadaha, heerka cuntada iyo heerka dawooyinka iyadoo loo eegayo isticmaalkeeda.
Labo, hydroxypropyl methyl cellulose waxa loo qaybiyaa dhawr nooc, oo ay ku jiraan waa maxay faraqa u dhexeeya?
HPMC waxa loo qaybin karaa nooca degdega ah (fasalka suffix “S”) iyo nooca milmaya kulul, alaabta degdega ah, ee biyaha qabow si degdeg ah u kala firdhiyaan, baaba'aan biyaha, wakhtigan dareeruhu ma laha viscosity, sababtoo ah HPMC kaliya ayaa ku kala firdhiyey biyaha. , ma jiro kala diri dhab ah. Qiyaastii (walaaq) ilaa 2 daqiiqo, mawjadaha dareeraha ayaa si tartiib ah u kordha, samaynta kolloid viscos ah oo cad. Alaabooyinka kulul ee kulul, biyaha qabow, si deg deg ah ayaa loogu kala firdhi karaa biyo kulul, baaba'aan biyaha kulul, sida heerkulka ilaa heerkul gaar ah (sida ku cad heerkulka jel ee alaabta), viscosity si tartiib tartiib ah ayaa u muuqda, ilaa formation of viscous hufan. kolloid.
Saddex, habka xalinta hydroxypropyl methyl cellulose waa maxay?
1. Dhammaan moodooyinka waxaa lagu dari karaa maaddada habka isku dhafka qalalan;
2, waxay u baahan tahay in si toos ah loogu daro xalalka heerkulka caadiga ah ee biyaha, waxa fiican in la isticmaalo nooca firidhsan biyaha qabow, ka dib marka lagu daro guud ahaan 10-90 daqiiqo si ay u dhumucdiisuna (walaaqaya, walaaqaya, walaaqaya)
3. Habka caadiga ah ayaa marka hore lagu kala firdhiyey iyada oo la walaaqayo biyo kulul, ka dibna lagu kala diro iyadoo lagu darayo biyo qabow ka dib walaaqaya iyo qaboojinta.
4. Haddii ifafaale duubista iyo duubista ay dhacdo marka la milmo, sababtoo ah isku-dhafka ayaa ku filnayn ama qaabka caadiga ah waxaa si toos ah loogu daraa biyaha qabow. Waqtigaan, waa in si degdeg ah loo walaaqaa.
5. Haddii xumbo la soo saaro marka la kala diro, waxaa lagu dayn karaa 2-12 saacadood (waqtiga gaarka ah waxaa lagu go'aamiyaa joogteynta xalka) ama laga saaro vacuum-saarid, cadaadis iyo habab kale, iyo qadar ku habboon wakiilka antifoaming. sidoo kale waa lagu dari karaa.
Afar, sidee u fudud oo dareen leh si loo go'aamiyo istaaga ama dhicista hydroxypropyl methyl cellulose?
1, cadaanka, cadaanka inkasta oo aan la go'aamin karin in HPMC uu fiican yahay, iyo haddii lagu daro habka wax-soo-saarka caddeynta, waxay saameyn doontaa tayada, laakiin, alaabta wanaagsan inta badan cadaanka ayaa wanaagsan.
2, ganaax: Ganaaxa HPMC guud ahaan 80 mesh iyo 100 mesh, 120 ka yar, kan ugu wanagsan ayaa wanaagsan.
3, gudbinta iftiinka: HPMC ee biyaha, samaynta kolloid hufan, arag gudbinta iftiinka, weynaanta penetrability ee wanaagga, sharax insoluble yar gudaha, kiliyaha falcelinta toosan by darajo guud ahaan wanaagsan, soo diri doonaa qaar ka mid ah killi falcelinta jiifta ah, laakiin Ma sharxi karo tayada wax-soo-saarka kittle-ta toosan way ka wanaagsan tahay wax-soo-saarka kittle-ka beenta ah, waxaa jira arrimo badan oo go'aamiya tayada alaabta.
4, saamiga: saamiga weyn, ka culus ayaa ka wanaagsan, marka loo eego kuwa waaweyn, guud ahaan sababtoo ah waxa ku jira hydroxypropyl waa sarreeyaa, maadada hydroxypropyl waa mid sarreeya, ka dibna haynta biyaha ayaa ka fiican.
Shan, hydroxypropyl methyl cellulose ee qadarka budada putty?
HPMC ee codsiga dhabta ah ee qiyaasta, by deegaanka cimilada, heerkulka, tayada ash calcium maxaliga ah, caanaha budada putty iyo shuruudaha macaamiisha ee tayada kala duwan, oo waxaa jira kala duwanaansho agagaarka, guud ahaan hadalka, inta u dhaxaysa 4-5 kg.
Lix, hydroxypropyl methyl cellulose viscosity ayaa aad uga fiican?
Ku caajiso budada ubadku waa GUUD 100 KUN OO OK, SHURUUDAHA MORTARKU WAA QAAR KA DHEERA, RABAA 150 KUN OO KALIYA IN UU WANAAGSAN YAHAY IN LA ISTICMAALO In budada putty, ilaa iyo inta haynta biyuhu ay wanaagsan yihiin, viscosity waa hooseeyaa (7-8), sidoo kale waa suurtogal, dabcan, maqaarku wuu ka weyn yahay, haynta biyaha ee qaraabada ah ayaa ka sii fiican, marka maqaarku ka badan yahay 100,000 , viscosity ayaa saameyn yar ku leh haynta biyaha.
Toddoba, waa maxay tilmaamayaasha farsamada ugu muhiimsan ee hydroxypropyl methyl cellulose?
Waxyaabaha ay ka kooban tahay Hydroxypropyl
Maaddada methyl
viscosity
dambas
Miisaan qallalan oo luma
Sideed, waa maxay alaabta ceeriin ee ugu muhiimsan ee hydroxypropyl methyl cellulose?
Qalabka ceeriin ee ugu muhiimsan ee HPMC: cudbi la safeeyey, chloromethane, propylene oxide, alaabta ceeriin ee kale, kiniiniyada alkali, toluene acid.
Sagaal, hydroxypropyl methyl cellulose ee codsiga budada putty, doorka ugu muhiimsan, haddii kiimiko?
Budada putty, waxay ka ciyaartaa saddex door: dhumuc, haynta biyaha iyo dhismaha. Dhumucdiisuna, cellulose waa la dhumu karaa si uu u ciyaaro ganaax, si xal si ay u ilaaliyaan labbiska kor iyo hoos door la mid ah, ka soo laadlaad anti socodka. 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.
Hydroxypropyl methyl cellulose waa ether aan-ionic cellulose ether, haddaba waa maxay non-ionic?
Guud ahaan, walxaha aan firfircoonayn kama qaybqaataan falcelinta kiimikada.
CMC (carboxymethyl cellulose) waxaa iska leh cationic cellulose, markaa la kulanka calcium cawl waxay noqon doontaa caleen digirta.
11. Waa maxay heerkulka jelka ee hydroxypropyl methylcellulose ee la xidhiidha?
Heerkulka jel ee HPMC waxa uu la xidhiidha maadada methoxy. Maaddada methoxy-ka ee hooseeysa, ayaa sareeysa heerkulka jelka.
Laba iyo toban, budada budada ah iyo hydroxypropyl methyl cellulose ma laha xiriir?
Waa muhiim!! HPMC waa biyo haynta liidata, waxay keeni doontaa budo.
13. Waa maxay faraqa u dhexeeya xalalka biyaha qabow ee degdega ah iyo xalka kulul ee hydroxypropyl methyl cellulose ee habka wax soo saarka?
HPMC nooca biyo qabow waa ka dib daawaynta dusha glioxal, in biyo qabow si degdeg ah u kala firdhiyey, laakiin aan run ahaantii 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 urta sida loo soo celiyo mas'uuliyadda?
HPMC ee lagu soo saaro habka dareeraha ayaa laga sameeyay toluene iyo aalkolada isopropyl sida dareere ahaan. Haddi dhaqiddu aysan aad u fiicneyn, waxaa jiri doona xoogaa dhadhamin ah. (Kabashada dhexdhexaadinta waa habka ugu muhiimsan ee ur)
15, isticmaalka kala duwan, sida loo doorto saxda ah hydroxypropyl methyl cellulose?
Budada Putty: Shuruudaha haynta biyaha sare, fududaynta dhismaha wanaagsan (fasalka lagu taliyay: 7010N)
Hoobiyaha sibidhka caadiga ah: haynta biyaha sare, iska caabinta heerkulka sare, viscosity degdeg ah (fasalka lagu taliyay: HPK100M)
Codsiga xabagta dhismaha: alaabta degdega ah, viscosity sare. (Sumadda lagu taliyay: HPK200MS)
Hoobiyaha Gypsum: haynta biyaha sare, viscosity dhexdhexaad iyo hoose, muuqasho degdeg ah (fasalka lagu taliyay: HPK600M)
16, hydroxypropyl methyl cellulose waa maxay magaca?
HPMC ama MHPC oo loo yaqaan hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
Todoba iyo toban, hydroxypropyl methyl cellulose ee codsiga budada putty, budada budada putty waa maxay sababta?
HPMC ee budada putty, waxay ciyaaraan saddex door oo dhumuc, haynta biyaha iyo dhismaha, sababta xumbo:
1. Biyo aad u badan ayaa lagu daraa.
2. Hoosku ma qallajin, dusha sare ee lakabka kale ee xoqidda, sidoo kale waa sahlan tahay in la xumbo.
Sideed iyo toban, hydroxypropyl methyl cellulose iyo MC waa maxay faraqa u dhexeeya:
MC waa methylcellulose, kaas oo ka samaysan suuf la safeeyey ka dib daawaynta alkali iyo methane chloride sida wakiilka etherification iyada oo loo marayo falcelin taxane ah si loo sameeyo ether cellulose. Guud ahaan, heerka beddelka waa 1.6-2.0, iyo milanka heerarka kala duwan ee beddelka ayaa sidoo kale ka duwan, taas oo ka tirsan ether-ka aan-ionic cellulose.
(1) Haysashada biyaha ee methyl cellulose waxay kuxirantahay qadarka isugeynta, viscosity, ganaaxyada walxaha iyo xawaaraha kala dirida. Guud ahaan, haddii qadarka wax lagu darayo uu weyn yahay, ganaaxu waa yar yahay iyo viscosity waa weyn yahay, heerka haynta biyuhu waa sarreeyaa. Qadarka wax-ku-darku wuxuu saameyn weyn ku leeyahay heerka haynta biyaha, iyo viscosity-ku kuma xirna heerka haynta biyaha. Xawaaraha kala diriddu wuxuu inta badan ku xiran yahay heerka wax ka beddelka dusha sare ee qaybaha cellulose iyo ganaaxyada walxaha. Inta kor ku xusan ee cellulose ether methyl cellulose iyo hydroxypropyl methyl cellulose heerka haynta biyaha waa sare.
(2) Methyl cellulose waxaa lagu milmi karaa biyo qabow, kala diri biyaha kulul la kulmi doona dhibaatooyin, ay xal aqueous ee kala duwan ee pH = 3-12 waa mid aad u deggan, iyo istaarijka, iyo waafaqsan surfactant badan oo wanaagsan, marka heerkulku gaaro heerkulka gelation, ifafaale gelation dhici doona.
(3) Isbeddelka heerkulka ayaa si dhab ah u saameyn doona xadiga biyaha ee methyl cellulose, guud ahaan heerkulku sarreeyo, way ka sii xumaanaysaa haynta biyaha. Haddii heerkulka hoobiye uu ka sarreeyo 40 darajo, haynta biyaha ee methyl cellulose ayaa si weyn uga sii dari doonta, taasoo saameyn weyn ku yeelan doonta dhismaha hoobiye.
(4) Methyl cellulose waxay saameyn muuqata ku leedahay dhismaha iyo ku dhejinta hoobiye. Halkan, adhesion waxa loola jeedaa xoogga xabagta ee la dareemay inta u dhaxaysa qalabka daabka ee shaqaalaha iyo substrate darbiga, taas oo ah, caabbinta dhogorta ee hoobiye. 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.
Waqtiga post: Seb-07-2022