1. Mawonekedwe:
Yang'anani mowoneka pansi pa kuwala kwachilengedwe.
2. Makanema:
Yesani 400 ml beaker yothamanga kwambiri, yezani 294 g madzi mmenemo, yatsani chosakanizira, kenaka onjezerani 6.0 g wa ether yoyezera mapalo;kusonkhezera mosalekeza mpaka itasungunuka kwathunthu, ndipo pangani yankho la 2%;Pambuyo 3-4 h pa experimental kutentha (20 ± 2) ℃;gwiritsani ntchito viscometer yozungulira ya NDJ-1 kuti muyese, ndikusankha nambala yoyenera ya viscometer rotor ndi liwiro la rotor panthawi ya mayeso.Yatsani rotor ndikuyiyika mu yankho ndikuyimirira kwa mphindi 3-5;yatsani chosinthira ndikudikirira kuti mtengo ukhazikike, ndikulemba zotsatira.Zindikirani: (MC 40,000, 60,000, 75,000) Sankhani No. 4 rotor ndi liwiro la 6 revolutions.
3. Kusungunuka m'madzi:
Yang'anani ndondomeko ndi liwiro la kusungunuka panthawi yomwe mukuyikonza kukhala yankho la 2%.
4. Phulusa:
Tengani crucible ya porcelain ndikuwotcha mu ng'anjo yotentha ya kavalo, muziziziritsa mu desiccator, ndipo muyeseni mpaka kulemera kumakhala kosasintha.Yesani molondola (5 ~ 10) magalamu a chitsanzo mu crucible, choyamba kuwotcha crucible pa ng'anjo yamagetsi, ndipo ikafika carbonization wathunthu, ikani mu ng'anjo yotentha ya akavalo kwa pafupifupi (3 ~ 4) h, ndikuyiyika. mu desiccator kuti aziziziritsa.Yesani mpaka kulemera kosalekeza.Kuwerengera Phulusa (X):
X = (m2-m1) / m0×100
M'chilinganizo: m1 --unyinji wa crucible, g;
m2 ——Kuchuluka kwa phulusa ndi phulusa pambuyo poyatsa, g;
m0 ——unyinji wa chitsanzo, g;
5. Madzi ochuluka (kutayika poyanika):
Yezerani chitsanzo cha 5.0g pa thireyi ya chosanthula chinyezi chofulumira ndikuchisintha kukhala ziro molondola.Wonjezerani kutentha ndikusintha kutentha kukhala (105±3) ℃.Ngati sikelo yowonetsera sikuyenda, lembani mtengo m1 (kuyezetsa kulondola ndi 5mg).
Kuwerengera kwamadzi (kutayika pakuwumitsa X (%)):
X = (m1 / 5.0) × 100
Nthawi yotumiza: Nov-02-2021