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01. Farqiga u dhexeeya hydroxypropyl methyl been abuur ah iyo hydroxypropyl methyl tayo sare leh Muuqaal: istaarij saafi ah HPCM wuxuu u muuqdaa mid aad u isku mid ah, inta u dhaxaysa 0.3 iyo 0.4 g/ml. Amylum wuxuu ku xidhmaa istaarijka sidaa darteed HPCM waa dareere oo ka yar walbahaarka ka yimaada waxyaabaha caadiga ah ee ka saara sunta. Xaaladaha: istaarijka oo ka buuxa istaarij, hpm ...Akhriso wax dheeraad ah»
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Isticmaalayaal badan ayaa si dhif ah u fiiro gaar ah u leh dhibaatada heerkulka jelka ee hydroxypropyl methylcellulose. Maalmahan, hydroxypropyl methylcellulose guud ahaan waxaa lagu kala saaraa viscosity, laakiin deegaanno gaar ah iyo warshado gaar ah, kaliya viscosity-ga badeecada ayaa ka tarjumaya...Akhriso wax dheeraad ah»
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Waxaa jira arrimo badan oo saameeya isticmaalka hydroxypropyl methylcellulose HPMC ee qalabka dhismaha, gaar ahaan balaastikada ku salaysan gypsum, sida soo socota: 1 haysashada biyaha Hydroxypropyl methylcellulose ee dhismaha ayaa ka hortagta nuugista xad dhaafka ah ee biyaha ee substrate-ka, iyo marka gyp...Akhriso wax dheeraad ah»
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Hal isku-darka ayaa leh xaddidaadyo lagu hagaajinayo waxqabadka slurry-ka gypsum. Haddii waxqabadka hoobiyaha gypsum-ka uu yahay in la gaaro natiijooyin ku filan oo la buuxiyo shuruudaha codsiga ee kala duwan, isku-darka kiimikada, isku-darka, buuxinta, iyo agabyada kala duwan ayaa loo baahan yahay in la isku daro oo la...Akhriso wax dheeraad ah»
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Hydroxypropyl methylcellulose – hoobiye dhagax ah Kordhi dhegdhegga dusha sare ee dhagaxa, oo kor u qaad haynta biyaha, si loo hagaajiyo xoogga hoobiyaha. Dufanka iyo balaastikada oo la hagaajiyay si loo hagaajiyo sifooyinka codsiga, codsi fudud ayaa badbaadiya waqtiga oo hagaajiya...Akhriso wax dheeraad ah»
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Cellulose hydroxypropyl methyl ether waxaa laga sameeyaa cellulose cudbi aad u saafi ah iyada oo loo marayo etherification gaar ah xaaladaha alkaline. saamaynta: 1. Warshadaha dhismaha: Iyada oo ah wakiil biyaha celiya iyo dib-u-hagaajin ah oo ah hoobiyaha sibidhka, waxay ka dhigi kartaa hoobiyaha mid la bamgareyn karo. Malaas, gypsum, budada putty ama...Akhriso wax dheeraad ah»
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1. Heerkulka jel (0.2% xal) 50-90°C. 2. Ku milma biyaha iyo inta badan polar c iyo saamiga ku habboon ee ethanol/biyo, propanol/biyo, dichloroethane, iwm., aan ku milmi karin ether, acetone, ethanol buuxa, oo ku barara si cad ama xoogaa u milma xalka kolloidal biyo qabow. Biyaha ...Akhriso wax dheeraad ah»
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MC waa methyl cellulose, kaas oo laga sameeyay cellulose ether iyadoo lagu daweynayo cudbi la safeeyey alkali, iyadoo la adeegsanayo methane chloride oo ah wakiilka etherification, isla markaana la marayo taxane falcelin ah. Guud ahaan, heerka beddelka waa 1.6 ~ 2.0, milmiduna sidoo kale way kala duwan tahay iyadoo la eegayo darajooyin kala duwan...Akhriso wax dheeraad ah»
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hydroxypropyl methylcellulose-ka kiimikada maalinlaha ah waa polymer synthetic ah oo laga sameeyay suufka cellulose-ka dabiiciga ah iyada oo loo marayo wax ka beddelka etherification-ka. Cellulose ether waa wax ka soo jeeda cellulose-ka dabiiciga ah. Soo saarista cellulose ether way ka duwan tahay polymer-ka synthetic-ga. Waa maaddada ugu aasaasiga ah...Akhriso wax dheeraad ah»
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Ku darista hydroxypropyl methylcellulose si loo sameeyo budada putty, dheellitirkeedu ma fududa in aad u weynaato, aad u weynaantuna waxay sababi doontaa shaqeyn liidata, markaa intee le'eg ayuu dheellitirku u baahan yahay hydroxypropyl methylcellulose budada putty? Aan u falanqeyno qof walba. Waxaa ugu wanaagsan in lagu daro hydroxypropyl methylc...Akhriso wax dheeraad ah»
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Matoorka sibidhka iyo slurry-ka ku salaysan gypsum-ka, hydroxypropyl methylcellulose wuxuu inta badan door ka ciyaaraa haynta iyo dhumucda biyaha, wuxuuna si wax ku ool ah u hagaajin karaa isku-xidhka iyo iska caabbinta dhogorta. Arrimaha sida heerkulka hawada, heerkulka iyo xawaaraha cadaadiska dabaysha ayaa saameyn doona isbeddelka...Akhriso wax dheeraad ah»
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1. Dhibaatooyinka caadiga ah ee budada putty Qallajinta degdega ah: Tani waxay inta badan sabab u tahay xaddiga budada calcium lime ee lagu daray (aad u weyn, xaddiga budada calcium lime ee loo isticmaalo qaacidada putty si habboon ayaa loo dhimi karaa) waxay la xiriirtaa heerka haynta biyaha ee faybarka, waxayna sidoo kale la xiriirtaa daawada...Akhriso wax dheeraad ah»