Maaddaama isku-dhafka ugu muhiimsan ee lagu dhisayo alaabada hoobiyeyaasha qallalan ee qallalan, ether cellulose ayaa door muhiim ah ka ciyaara waxqabadka iyo kharashka hoobiyeyaasha qallalan ee qallalan. Waxaa jira laba nooc oo ethers cellulose ah: mid waa ionic, sida sodium carboxymethyl cellulose (CMC), ka kalena waa non-ionic, sida methyl cellulose (MC), hydroxyethyl cellulose (HEC), Hydroxypropyl cellulose (HPMC), iwm. Iyada oo ay sii kordheyso caannimada isticmaalka alaabada hoobiyeyaasha qalalan ee qallalan, waddankeygu wuxuu noqon doonaa soo saaraha ugu weyn adduunka ee hoobiyeyaasha qalalan, codsiga Ether-ka cellulose-ka ayaa sii kordhin doona, soo saarayaasha iyo noocyada alaabooyinka ayaa sidoo kale kordhin doona. Waxqabadka sheyga ether-ka cellulose ee hoobiyeyaasha qalalan ee qallalan ayaa noqday diiradda saarayaasha iyo isticmaalayaasha.
Hantida ugu muhiimsan ee ether cellulose waa haynta biyaha ee alaabta dhismaha. Haddii aan lagu darin ether-ka cellulose, lakabka khafiifka ah ee hoobiye cusub si dhakhso ah ayuu u engegaa sibidhku uma qulquli karo habka caadiga ah iyo hoobiye ma adkeyn karo oo gaari karo isku xirnaan wanaagsan. Isla mar ahaantaana, ku-darka ether-ka cellulose wuxuu ka dhigayaa hoobiye inuu yeesho caag wanaagsan iyo dabacsanaan, wuxuuna wanaajiyaa xoogga isku-xidhka ee hoobiye. Aynu ka hadalno saamaynta ay ku leedahay codsiga hoobiyeyaasha qallalan ee qallalan ee ka soo baxa waxqabadka sheyga ee ether cellulose.
1. Fiicnaanta cellulose
Wanaajinta ether-ka cellulose waxay saamaysaa milmaheeda. Tusaale ahaan, hoos u dhigida ganaaxa ether cellulose, sida ugu dhakhsaha badan ee ay u milmaan biyaha iyo hagaajinta waxqabadka biyaha. Sidaa darteed, ganaaxa ether cellulose waa in lagu daraa mid ka mid ah hantideeda baaritaanka. Guud ahaan, hadhaaga shaandhada ether-ka cellulose ee ka sarreeya 0.212mm waa inaanay ka badnaan 8.0%.
2. Qalajinta heerka miisaanka dhimista
Heerarka luminta qallajinta waxaa loola jeedaa boqolleyda tirada walxaha lumay ee tirada muunada asalka ah marka etherka cellulose la qalajiyo heerkul gaar ah. Tayo gaar ah oo ether cellulose ah, heerka luminta miisaanka luminta waa mid aad u sarreeya, taas oo yareyn doonta nuxurka maaddooyinka firfircoon ee ether-ka cellulose, saameynaya saameynta codsiga ee shirkadaha hoose, iyo kordhinta qiimaha iibka. Caadi ahaan, miisaanka luminta qalajinta ether cellulose kama badna 6.0%.
3. Waxyaabaha dambaska sulfate ee ether cellulose
Tayo gaar ah oo ether cellulose ah, waxyaabaha ku jira dambaska ayaa aad u sarreeya, taas oo yareyn doonta nuxurka maaddooyinka firfircoon ee ether-ka cellulose waxayna saameyneysaa saameynta codsiga ee shirkadaha hoose. Maaddooyinka dambaska sulfate ee ether-ka cellulose waa cabbir muhiim ah oo waxqabadkiisa ah. Marka lagu daro heerka wax soo saarka ee hadda jira ee dalkayga soo saarayaasha ether cellulose, sida caadiga ah waxa ku jira dambaska ee MC, HPMC, HEMC waa in aanay ka badan 2.5%, iyo content dambaska ee HEC cellulose ether waa in aanay ka badan 10.0%.
4. Viscosity of cellulose ether
Haysashada biyaha iyo saamaynta dhumucda etherka cellulose waxay inta badan ku xidhan tahay viscosity iyo qiyaasta etherka cellulose lafteeda oo lagu daray dareeraha sibidhka.
5. Qiimaha pH ee ether cellulose
Viscosity ee alaabada ether-ka cellulose si tartiib tartiib ah hoos ayey u dhici doontaa ka dib marka lagu kaydiyo heerkul sare ama wakhti dheer, gaar ahaan alaabada viscosity sare, sidaas darteed waa lagama maarmaan in la xaddido pH. Guud ahaan, waxaa lagu talinayaa in la xakameeyo kala duwanaanta pH ee ether cellulose ilaa 5-9.
6. Gudbinta iftiinka etherka cellulose
Gudbinta iftiinka etherka cellulose waxay si toos ah u saameyneysaa saameynteeda codsiga ee qalabka dhismaha. Qodobbada ugu muhiimsan ee saameeya gudbinta iftiinka cellulose ether waa: (1) tayada alaabta ceeriin; (2) saamaynta alkalization; (3) saamiga habka; (4) saamiga dareeraha; (5) Saamaynta dhexdhexaadinta. Marka loo eego saameynta isticmaalka, gudbinta iftiinka ee ether cellulose waa inaysan ka yarayn 80%.
7. Heerkulka jel ee ether cellulose
Eter-ka Cellulose waxaa inta badan loo isticmaalaa sida viskosifier, balaastiiste iyo wakiilka biyaha ee alaabada sibidhka, markaa viscosity iyo heerkulka jel waa tallaabooyin muhiim ah oo lagu garto tayada etherka cellulose. Heerkulka jel waxaa loo isticmaalaa si loo go'aamiyo nooca cellulose ether, taas oo la xidhiidha heerka beddelka ethers kale cellulose. Intaa waxaa dheer, milix iyo wasakhdu waxay sidoo kale saameyn karaan heerkulka jelka. Marka heerkulka xalku kordho, polymer-ka cellulose wuxuu si tartiib tartiib ah u lumiyaa biyaha, iyo viscosity ee xalka ayaa hoos u dhacaya. Marka barta jelka la gaaro, polymer-ka ayaa si buuxda u fuuqbaxay wuxuuna sameeyaa jel. Sidaa darteed, alaabada sibidhka, heerkulka sida caadiga ah waxaa lagu xakameynayaa ka hooseeya heerkulka jel ee bilowga ah. Xaaladdan oo kale, heerkulku hooseeyo, sare u kaca viscosity, iyo sida badan oo cad saamaynta dhumuc iyo haynta biyaha.
Waqtiga boostada: Jun-01-2023