1. Kulaylka fuuq-baxa
Sida ku cad qalooca sii deynta kulaylka fuuq-celinta waqti ka dib, habka fuuq-celinta ee sibidhka waxaa badanaa loo qaybiyaa shan marxaladood, kuwaas oo kala ah, muddada fuuq-celinta bilowga ah (0~15 daqiiqo), muddada soo-kicinta (15 daqiiqo ~ 4 saacadood), muddada dardar-gelinta iyo dejinta (4 saacadood ~ 8 saacadood), muddada hoos u dhigista iyo adkaanta (8 saacadood ~ 24 saacadood), iyo muddada bogsashada (1 maalmood ~ 28 maalmood).
Natiijooyinka tijaabada waxay muujinayaan in marxaladda hore ee kicinta (tusaale ahaan, muddada fuuq-baxa bilowga ah), marka xaddiga HEMC uu yahay 0.1% marka la barbar dhigo dareeraha sibidhka madhan, heerka ugu sarreeya ee slurry-ka ayaa horumarsan oo heerka ugu sarreeya ayaa si weyn u kordha. Marka xaddigaQalabka Caafimaadka Dadweynaha (HEMC)Waxay kor u kacdaa marka ay ka sarreyso 0.3%, heerka ugu sarreeya ee kuleylka dibadda ee slurry-ka ayaa dib u dhaca, qiimaha ugu sarreeyana si tartiib tartiib ah ayuu hoos ugu dhacaa marka uu kordho xaddiga HEMC; HEMC si cad ayay u dib u dhigi doontaa muddada kicinta iyo muddada dardargelinta ee slurry-ka sibidhka, iyo inta badan ee ku jirta, muddada soo-saarista ayaa sii dheeraan doonta, muddada dardargelinta ayaa sii xumaanaysa, iyo heerka ugu sarreeya ee kulaylka dibadda ee sii yaraanaya; isbeddelka ku jira ether-ka sibidhka sibidhka saameyn cad kuma laha dhererka muddada hoos u dhigista iyo muddada xasilloonida slurry-ka sibidhka, sida ku cad Jaantuska 3(a) Waxaa la muujiyay in ether-ka sibidhka sibidhka uu sidoo kale yarayn karo kulaylka fuuq-celinta koollada sibidhka 72 saacadood gudahood, laakiin marka kulaylka fuuq-celinta uu ka dheer yahay 36 saacadood, isbeddelka ku jira ether-ka sibidhka sibidhka saameyn yar ayuu ku leeyahay kulaylka fuuq-celinta koollada sibidhka, sida Jaantuska 3(b).
Jaantuska 3 Isbeddelka isbeddelka heerka sii deynta kulaylka ee koollada sibidhka oo leh maadooyin kala duwan oo ka mid ah ether cellulose (HEMC)
2. Msifooyinka farsamada:
Markii la baranayay laba nooc oo ah ethers cellulose ah oo leh viscosities 60000Pa·s iyo 100000Pa·s, waxaa la ogaaday in xoogga cadaadiska ee hoobiyaha wax laga beddelay ee lagu qasay ether methyl cellulose ether uu si tartiib tartiib ah hoos ugu dhacayo iyadoo la kordhinayo waxa ku jira. Xoogga cadaadiska ee hoobiyaha wax laga beddelay ee lagu qasay viscosity 100000Pa·s hydroxypropyl methyl cellulose ether ayaa marka hore kordha ka dibna hoos u dhaca marka la kordhiyo waxa ku jira (sida ku cad Jaantuska 4). Waxay muujinaysaa in ku darista ether methyl cellulose ether ay si weyn u yareyn doonto xoogga cadaadiska ee hoobiyaha sibidhka. Inta badan ee la kordhiyay, xoogga ayaa yaraan doona; viscosity-ga yar, saameynta weyn ee luminta xoogga cadaadiska hoobiyaha; hydroxypropyl methyl cellulose ether Marka qiyaasta ay ka yar tahay 0.1%, xoogga cadaadiska ee hoobiyaha si habboon ayaa loo kordhin karaa. Marka qiyaasta ay ka badan tahay 0.1%, xoogga cadaadiska ee hoobiyaha ayaa hoos u dhici doona marka la kordhiyo qiyaasta, markaa qiyaasta waa in lagu xakameeyaa 0.1%.
Jaantuska 4 3d, 7d iyo 28d xoogga cadaadiska ee hoobiyaha sibidhka ee wax laga beddelay MC1, MC2 iyo MC3
(Methyl cellulose ether, viscosity 60000Pa·S, wixii hadda ka dambeeya waxaa loo yaqaan MC1; methyl cellulose ether, viscosity 100000Pa·S, oo loo yaqaan MC2; hydroxypropyl methylcellulose ether, viscosity 100000Pa·S, oo loo yaqaan MC3).
3. Cwaqtiga loo qoondeeyay:
Markii la cabbiro waqtiga dejinta ee hydroxypropyl methylcellulose ether oo leh dheellitir dhan 100000Pa·s qiyaaso kala duwan oo ah koollada sibidhka, waxaa la ogaaday in kororka qiyaasta HPMC, waqtiga dejinta bilowga ah iyo waqtiga dejinta kama dambaysta ah ee hoobiyaha sibidhka ay sii dheeraadeen. Marka xoogga la saaro 1%, waqtiga dejinta bilowga ah wuxuu gaarayaa 510 daqiiqo, waqtiga dejinta kama dambaysta ahna wuxuu gaarayaa 850 daqiiqo. Marka la barbardhigo muunadda madhan, waqtiga dejinta bilowga ah waxaa lagu kordhiyaa 210 daqiiqo, waqtiga dejinta kama dambaysta ahna waxaa lagu kordhiyaa 470 daqiiqo (sida ku cad Jaantuska 5). Hadday tahay HPMC oo leh dheellitir dhan 50000Pa s, 100000Pa s ama 200000Pa s, waxay dib u dhigi kartaa dejinta sibidhka, laakiin marka la barbar dhigo saddexda ether ee cellulose, waqtiga dejinta bilowga ah iyo waqtiga dejinta kama dambaysta ah ayaa la dheereeyaa iyadoo la kordhinayo dheellitirka, sida ku cad Jaantuska 6 ee la muujiyay. Tani waxay sabab u tahay in cellulose ether uu ku milmo dusha sare ee walxaha sibidhka, taasoo ka hortagaysa in biyuhu ay la xiriiraan walxaha sibidhka, taasoo dib u dhigaysa fuuq-baxa sibidhka. Inta uu le'eg yahay dhumucda ether-ka cellulose, ayaa lakabka nuugista ee dusha sare ee walxaha sibidhka ka sii dhumuc weynaanaya, iyo saameynta dib-u-dhaca ayaa sii weynaanaysa.
Jaantuska 5aad Saamaynta maadada ether-ka cellulose ee dejinta waqtiga hoobiyaha
Jaantuska 6aad Saamaynta kala duwan ee viscosities-ka HPMC ee waqtiga dejinta koollada sibidhka
(MC-5(50000Pa·s), MC-10(100000Pa·s) iyo MC-20(200000Pa·s))
Methyl cellulose ether iyo hydroxypropyl methyl cellulose ether waxay si weyn u dheereyn doonaan waqtiga dejinta ee slurry sibidhka, taas oo hubin karta in slurry sibidhka uu haysto waqti iyo biyo ku filan oo uu ku falgalo fuuq-celinta, waxayna xallin kartaa dhibaatada xoogga hooseeya iyo marxaladda dambe ee slurry sibidhka ka dib marka la adkaado.
4. Haynta biyaha:
Saamaynta ku jirta ether-ka cellulose ee haysashada biyaha ayaa la darsay. Waxaa la ogaaday in marka ay korodho tirada ether-ka cellulose, heerka haysashada biyaha ee hoobiyaha uu kordho, marka heerka haynta biyaha ee cellulose ether uu ka badan yahay 0.6%, heerka haysashada biyuhu uu u janjeero inuu xasilloonaado. Si kastaba ha ahaatee, marka la barbar dhigo saddex nooc oo ether-ka cellulose ah (HPMC oo leh dheellitir 50000Pa s (MC-5), 100000Pa s (MC-10) iyo 200000Pa s (MC-20)), saameynta dheellitirka biyaha ee haysashada biyaha way ka duwan tahay. Xiriirka ka dhexeeya heerka haysashada biyaha waa: MC-5.
Waqtiga boostada: Abriil-28-2024