1. Waa maxay isticmaalka ugu muhiimsan ee hydroxypropyl methyl cellulose?
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 fasalka warshadaha, heerka cuntada iyo heerka caafimaadka iyadoo loo eegayo isticmaalka.
2. Hydroxypropyl methyl cellulose waxa loo qaybiyaa dhawr nooc, waa maxay faraqa u dhexeeya?
HPMC waxaa loo qaybin karaa isla markiiba (calaamad suffix "S") iyo kulul milmay, alaabta degdega ah, in biyo qabow si degdeg ah u kala firdhiyey, la waayay biyaha, wakhtigan dareeraha 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 tartiib ah u kordheysa, sameynta jel cad oo dhegdheg leh. Alaabooyinka kulaylka leh, oo lagu qooyay biyo qabow, waxay si dhakhso ah u kala firdhi karaan biyaha kulul, waxay baaba'aan biyaha kulul, sida heerkulka hoos u dhaca heerkul gaar ah (sida ku cad heerkulka jel ee alaabta), viscosity si tartiib tartiib ah ayaa u muuqda, ilaa formation of kolloid viscous hufan.
3. Sidee loo go'aamiyaa tayada hydroxypropyl methyl cellulose si fudud oo dareen leh?
1) Cadaannimada, in kasta oo caddaanku aanu go'aamin karin inuu HPMC fiican yahay iyo in kale, haddii lagu daro habka wax-soo-saarka oo la caddeeyo, waxay saamaynaysaa tayadiisa, laakiin, badeecadaha wanaagsan inta badan caddaannimadu waa wanaagsan tahay.
2) Ganaaxsanaanta: Fiicnaanta HPMC guud ahaan waa 80 mesh iyo 100 mesh, 120 ujeedo ka yar, kan ugu fiican ayaa fiican.
3) gudbinta iftiinka: HPMC ee biyaha, samaynta kolloid hufan, u fiirso gudbintiisa iftiinka, weynaanta penetrability ee wanaagsan, sharax insoluble ka yar gudaha, kiish falcelinta toosan by darajo guud ahaan wanaagsan, soo diri doonaa qaar ka mid ah kiliyaha falcelinta jiifsan, laakiin ma sharxi karo tayada wax soo saarka kiliyaha toosan waa ka fiican yahay been-abuurka wax soo saarka, 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 maadada sare ee hydroxypropyl gudaha, maadada hydroxypropyl waa mid sarreeya, haynta biyaha ayaa ka fiican.
4. Waa maxay hababka kala dirida hydroxypropyl methyl cellulose?
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, waxaa fiican in la isticmaalo kala firidhsan biyaha qabow, ka dib marka lagu daro guud ahaan 10-90 daqiiqo si ay u dhumucdiisuna (walaaq walaaq)
3) Moodooyinka caadiga ah waa la kala diri karaa ka dib marka la isku daro oo lagu kala firdhiyo biyo kulul oo lagu daro biyo qabow ka dib walaaq iyo qaboojin;
4) Marka la kala diro, haddii ifafaale of agglomerating dhaco, waa sababta oo ah walaaqaya kuma filna ama qaabka caadiga ah si toos ah loogu daray biyaha qabow. Waqtigaan, waa in si degdeg ah loo walaaqaa.
5) Haddii goobooyinku dhacaan inta lagu jiro kala dirida, waxaa laga saari karaa iyagoo taagan 2-12 saacadood (waqtiga gaarka ah wuxuu ku xiran yahay joogteynta xalka) ama iyada oo la nadiifiyo oo la cadaadiyo, ama lagu daro qadar habboon oo ah wakiilka xumbada.
5 hydroxypropyl methyl cellulose ee mugga budada putty?
HPMC ee codsiga dhabta ah ee qadarka, by jawiga cimilada, heerkulka, tayada calcium cawl deegaanka, caanaha budada putty iyo shuruudaha macaamiisha ee tayada kala duwan, oo waxaa jira farqi u dhexeeya agagaarka 4-5 kiiloogaraam.
6. Waa maxay viscosity habboon ee hydroxypropyl methyl cellulose?
Budada Putty guud ahaan waa 100000 awood, shuruudaha hoobiye ayaa sarreeya, ilaa 150000 oo kaliya ayaa fiican, HPMCna waa door muhiim ah oo ka sii muhiimsan waa ilaalinta biyaha, oo ay ku xigto dhumucdi. In budada putty, ilaa iyo inta haynta biyaha waa wanaagsan yahay, viscosity waa yar yahay (7-8), sidoo kale waa suurtogal, dabcan, viscosity waa ka weyn yahay, haynta biyaha qaraabo ah ayaa ka sii fiican, marka viscosity ka badan yahay 100,000, viscosity ee haysashada biyaha ma aha wax badan.
7. Waa maxay alaabta ceeriin ee ugu muhiimsan ee hydroxypropyl methyl cellulose?
HPMCalaabta ceeriin ee ugu muhiimsan: suuf la safeeyey, chloromethane, propylene oxide, alaabta kale ee ceeriin, alkali kiniinka, toluene acid.
8. Hydroxypropyl methyl cellulose ee codsiga budada putty, doorka ugu muhiimsan, ha ahaato kiimiko?
In budada putty, dhumucdiisuna, haynta biyaha iyo dhismaha saddex hawlood. Dhumucdiisuna, cellulose waa la dhumuc karaa si ay u hakiyaan, si xalku weli la mid ah kor iyo hoos doorka ka soo laadlaad ka soo horjeeda socodka. Haysashada biyaha: ka dhig budada suufka si tartiib ah u qallaji, kaalshiyam cawl cawlan ah oo ku jirta falcelinta biyaha. Dhismaha: saliidda cellulose, waxay ka dhigi kartaa budada putty waxay leedahay dhismo wanaagsan. HPMC kama qaybqaadato fal-celin kiimikaad, laakiin kaliya waxay ciyaartaa door taageero.
9.
Marka la eego ereyada caadiga ah, walxaha aan firfircoonayn kama qaybqaataan falcelinta kiimikada.
CMC (carboxymethyl cellulose) waa cellulose cationic, markaa la kulanka calcium cawl waxay noqon doontaa hadhaaga curd digirta.
10. Maxay yihiin tilmaamayaasha farsamada ugu muhiimsan ee hydroxypropyl methyl cellulose?
Waxyaabaha ay ka kooban tahay Hydroxypropyl
Maaddada methyl
viscosity
dambas
Miisaan qallalan oo luma
11. Maxaa la xidhiidha heerkulka jel ee hydroxypropyl methyl cellulose?
Heerkulka jel ee HPMC wuxuu la xiriiraa maadada methoxyl, hoos u dhaca maadada methoxyl, heer kulka jelku wuu sarreeyaa.
12 budada dhibicda budada ah iyo xiriirka hydroxypropyl methyl cellulose?
Haddii HPMC ay liidato haynta biyaha, waxay keeni doontaa budada.
13 hydroxypropyl methyl cellulose ee codsiga budada putty, budada budada putty waa maxay sababta?
HPMC ee budada suufka ah, dhumucda, haynta biyaha iyo dhismaha saddexda door, sababta xumbo:
1. )Biyo aad u badan ayaa lagu daraa.
2.)Lakabka hoose ma qallajin,kadibna ku xoq lakabka dushiisa,kaas oo sidoo kale fudud in ay finan.
14. Waa maxay faraqa u dhexeeya biyaha qabow ee degdega ah-milmi kara iyo kulaylka-milmi hydroxypropyl methyl cellulose ee habka wax soo saarka?
HPMC biyaha qabow nooca xal degdeg ah ka dib daawaynta dusha glioxal, ku rid biyo qabow si degdeg ah u kala firdhiyey, laakiin aan runtii milmin, viscosity kor, waa la kala diri. Nooca heerkulbeegga dusha laguma daawayn glycoxal. Qadarka glycoxal waa weyn yahay, kala firdhisyadu waa dhakhso, laakiin maqaarku waa gaabis, qadarku waa yar yahay, liddi ku ah.
15. Maxay ku saabsan tahay urta hydroxypropyl methyl cellulose?
HPMC ee lagu soo saaro habka dareeraha ayaa laga sameeyay toluene iyo aalkolada isopropyl. Haddi dhaqiddu aysan aad u fiicneyn, waxaa jiri doona xoogaa dhadhamin ah. (Kabashada dhexdhexaadinta waa habka ugu muhiimsan ee ur)
16. Sidee loo doortaa hydroxypropyl methyl cellulose habboon isticmaalka kala duwan?
Budada Putty: Shuruudaha haynta biyaha sare, waafaqsanaanta dhismaha wanaagsan (fasalka lagu taliyay: 75AX100000)
Hoobiyaha sibidhka ee caadiga ah: haynta biyaha sare, iska caabinta heerkulka sare, viscosity degdeg ah (fasalka lagu taliyay: 75AX150000)
Codsiga xabagta dhismaha: alaabta degdega ah, viscosity sare. (Lambarka summada lagu taliyay: 75AX200000S)
Hoobiyaha Gypsum: haynta biyaha sare, viscosity dhexdhexaad iyo hoose, muuqasho degdeg ah (fasalka lagu taliyay: 75AX75000)
17. Waa maxay naaneesta hydroxypropyl methyl cellulose?
HPMC ama MHPC oo loo yaqaan hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
18. Waa maxay farqiga u dhexeeya hydroxypropyl methyl cellulose iyoMC?
MC waa methyl cellulose, waa suuf la safeeyey ka dib markii daawaynta alkali, chloride methane sida wakiilka etherifying, iyada oo taxane ah oo falcelin iyo sameeyey ether cellulose, heerka guud ee beddelka waa 1.6-2.0, heerka kala duwan ee milanka beddelka sidoo kale waa ka duwan yahay, iska leh ether non-ionic cellulose.
(1) Haysashada biyaha ee methyl cellulose waxay kuxirantahay qadarkeeda dheeriga ah, viscosity, ganaaxyada walxaha iyo heerka kala dirida. Guud ahaan, qadarka dheeraadka ah waa weyn yahay, ganaaxu waa yar yahay, viscosity waa weyn yahay, heerka haynta biyaha waa sare, qadarka dheeraadka ah ayaa saameyn weyn ku leh heerka haynta biyaha, viscosity iyo heerka haynta biyaha ma aha ka hooseeya xiriirka, heerka kala diri inta badan ku xiran tahay heerka wax ka beddelka dusha sare iyo ganaax qayb ka mid ah qaybaha cellulose. Methyl cellulose iyo hydroxypropyl methyl cellulose ee ku jira dhowr ethers cellulose ee kor ku xusan waxay leeyihiin heerka haynta biyaha sare.
(2) Methyl cellulose waxaa lagu milmi karaa biyo qabow, biyaha kulul way adkaan doontaa in la milmaan, xalkeeda aqueous ee pH = 3-12 waa mid aad u deggan, iyo istaarijka, iwm, iyo surfactants badan ayaa leh iswaafajin wanaagsan, marka heerkulku gaaro heerkulka gelation, waxaa jiri doona ifafaale gelation.
(3) Isbeddelka heerkulka ayaa si dhab ah u saameyn doona heerka haynta 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, taas oo si dhab ah u saameynaysa dhismaha hoobiye.
(4)Methyl cellulosewaxay saameyn muuqata ku leedahay dhismaha iyo ku dhegganaanta hoobiye. Ku dheggan halkan waxaa loola jeedaa xoogga koollada ee laga dareemay inta u dhexeysa qalabka iyo darbiga derbiga ee shaqaalaha, taas oo ah, caabbinta dhogorta ee hoobiye. Adhesion waa weyn yahay, caabbinta dhogorta ee hoobiye waa weyn tahay, xoogga looga baahan yahay shaqaalaha ee habka isticmaalka ayaa sidoo kale weyn, iyo dhismaha hoobiye waa liito.
Waqtiga boostada: Abriil-25-2024