1. Ukubukeka:
Hlola ngokubuka ngaphansi kokukhanya kwemvelo okuhlakazekile.
2. I-Viscosity:
Kala u-400 ml we-beaker evuselela kakhulu, kala u-294 g wamanzi kuwo, uvule umxube, bese wengeza u-6.0 g we-ether ye-cellulose esikalini;gudluza ngokuqhubekayo kuze kube yilapho ichitheka ngokuphelele, futhi wenze isisombululo esingu-2%;Ngemva kwamahora angu-3-4 ezingeni lokushisa lokuhlola (20±2)℃;sebenzisa i-viscometer ye-rotary ye-NDJ-1 ukuze uhlole, bese ukhetha inombolo ye-viscometer ye-rotor efanele kanye nesivinini se-rotor ngesikhathi sokuhlolwa.Vula i-rotor bese uyibeka esixazululweni futhi uyivumele ime imizuzu engu-3-5;vula iswishi bese ulinda ukuthi inani lizinze, bese urekhoda umphumela.Qaphela: (MC 40,000, 60,000, 75,000) Khetha i-rotor engu-4 ngesivinini se-6 revolutions.
3. Isimo sokuncibilika emanzini:
Bheka inqubo kanye nesivinini sokuqedwa phakathi nenqubo yokuyihlela ibe yisixazululo esingu-2%.
4. Okuqukethwe komlotha:
Thatha i-porcelain crucible bese uyishisa esithandweni esibilayo sehhashi, uyipholise ku-desiccator, bese uyikala kuze kube yilapho isisindo siba njalo.Kala ngokunembile (5~10) amagremu esampula ku-crucible, qala uwose i-crucible esithandweni sikagesi, futhi ngemva kokuba isifinyelele ekufakweni kwe-carbonization ephelele, uyibeke esithandweni esibilayo sehhashi cishe amahora angu-3 ~ 4, bese uyibeka. ku-desiccator ukuze uyipholise.Isisindo kuze kube isisindo njalo.Ukubalwa komlotha (X):
X = (m2-m1) / m0×100
Kufomula: m1 ——isisindo se-crucible, g;
m2 ——Isamba sesisindo se-crucible nomlotha ngemva kokuthungela, g;
m0 ——isisindo sesampula, g;
5. Okuqukethwe kwamanzi (ukulahleka lapho omiswa):
Kala isampula engu-5.0g kuthreyi yokuhlaziya umswakama osheshayo futhi uyilungise ibe yiziro umaki ngokunembile.Khulisa izinga lokushisa futhi ulungise izinga lokushisa libe ngu-(105±3)℃.Uma isikali sokubonisa singanyakazi, bhala inani elithi m1 (ukunemba kwesisindo ngu-5mg).
Okuqukethwe kwamanzi (ukulahlekelwa ekomisweni X (%)) isibalo:
X = (m1 / 5.0) × 100
Isikhathi sokuthumela: Nov-02-2021