Cellulose ether
Cellulose ether ndi mawu angapo kuti mupange zinthu zingapo zomwe zimapangidwa ndi alkali cellulose ndikumupeza wothandizika pazinthu zina. Cellulose cellulose imasinthidwa ndi othandizira osiyanasiyana, celloulose yosiyanasiyana imapezeka.
Malinga ndi ma ionization chinthu chamitundu, cellulose eder amatha kugawidwa m'magulu awiri: Ionic (monga carboxymethyl cellulose).
Malinga ndi mtundu wa gawo lamitundu yamitundu itha kugawidwa mu monoether (monga methyl cellulose) ndi ethersed ether (monga hydroxypropyl celyiluse).
Malinga ndi kuswana kosiyanasiyana, imatha kugawidwa m'madzi (monga hydrothyl cellulose) ndi solvent soluluse (monga ethyl cellose).
Nyanja yosungunuka yamadzi imagwiritsidwa ntchito m'matayala osakanikirana owuma agawika pompopompo ndikusungunuka pansi ndikusachedwa-cellulose yosungunula.
Kusiyana kwawo kuli kuti? Ndipo momwe mungakhazikitsire bwino mu yankho la am'madzi 2% kuti muyesedwe?
Kodi chithandizo chapamwamba ndi chiti?
Zotsatira pa cellulose ether?
oyamba
Pamtunda ndi njira yopanga mwadala mawonekedwe a zinthu za maziko okhala ndi makina, zakuthupi ndi mankhwala osiyana ndi apansi.
Cholinga cha mankhwala othandizira pa cellulose ndikuchedwetsa nthawi yophatikiza ma cellulose ndi madzi kuti akwaniritse zojambula zamagetsi, komanso kuti muchepetse kukana kwa cellulose ether ether.
Kusiyana pamene madzi ozizira amakonzedwa ndi 2% magazi am'madzi:
Ether-cellulose yopangidwa bwino kwambiri imatha kubereka mofulumira m'madzi ozizira ndipo sizophweka chifukwa cha ma viscosies ake osachedwa;
Cellulose ether popanda chithandizo chamankhwala, chifukwa cha ma viscositoties ake, idzawoneka isanakwane kwathunthu m'madzi ozizira, ndipo amakonda kuwumbika.
Kodi mungasinthe bwanji magazi osakhalapo?
1. Kuyika koyamba kuchuluka kwa etherse yopanda msewu;
2. Kenako onjezerani madzi otentha pafupi madigiri 80 Celsius, kulemera kwake ndi gawo limodzi mwa magawo atatu a voliyumu yamadzi, kuti ithe kufalikira ndi kufalikira;
3. Kenako, pang'onopang'ono kutsanulira m'madzi ozizira, kulemera kwake ndi magawo awiri mwa atatu a madzi otsalawo omwe amafunikira kuti apangike pang'onopang'ono, ndipo sipadzakhala wokalamba;
4. Pomaliza, pansi pa kulemera kofanana, ikani madzi osamba nthawi zonse mpaka kutentha kumadontha madigiri 20 Celsius, ndiye kuti mayeso a mafayilo angachitike!
Post Nthawi: Feb-02-2023