1. Imbonakalo:
Jonga ngokubonakalayo phantsi kokukhanya okuthe saa kwendalo.
2. IViscosity:
Ukulinganisa i-400 ml ye-beaker ephezulu, ulinganise i-294 g yamanzi kuyo, vula umxube, uze udibanise i-6.0 g ye-ether ye-cellulose elinganisiweyo;ugxobhoze ngokuqhubekayo de uchithe ngokupheleleyo, kwaye wenze isisombululo se-2%;Emva kwe-3-4 h kubushushu bokulinga (20±2)℃;sebenzisa i-NDJ-1 i-viscometer ye-rotary ukuvavanya, kwaye ukhethe inombolo ye-viscometer ye-rotor efanelekileyo kunye nesantya se-rotor ngexesha lovavanyo.Vula i-rotor kwaye uyibeke kwisisombululo kwaye uyivumele ime imizuzu emi-3-5;vula iswitshi kwaye ulinde ixabiso lokuzinza, kwaye urekhode umphumo.Qaphela: (MC 40,000, 60,000, 75,000) Khetha i-rotor ye-4 ngesantya se-6 revolutions.
3. Isimo sokunyibilika emanzini:
Jonga inkqubo kunye nesantya sokuchithwa ngexesha lenkqubo yokuyiqwalasela kwisisombululo se-2%.
4. Umxholo wothuthu:
Thatha i-porcelain crucible kwaye uyitshise kwisithando somlilo esibilisa ihashe, uyipholise kwi-desiccator, kwaye uyilinganise kude kube nzima.Ngokuchanekileyo ukulinganisa (5 ~ 10) iigram zesampulu kwi-crucible, okokuqala uwose i-crucible kwiziko lombane, kwaye emva kokuba ifikelele kwi-carbonization epheleleyo, uyibeke kwisithando somlilo sehashe malunga (3 ~ 4) h, uze uyibeke. kwidesika yokuyipholisa.Ubunzima bude buhlale bubunzima.Ukubalwa kothuthu (X):
X = (m2-m1) / m0×100
Kwifomula: m1 --ubunzima be-crucible, g;
m2 ——Itotali yobunzima beziphambuka kunye nothuthu emva kokutshiswa, g;
m0 ——ubunzima besampulu, g;
5. Isiqulatho samanzi (ilahleko ekomisweni):
Yenza isampuli ye-5.0g kwi-tray ye-analyzer yomswakama okhawulezayo kwaye uyilungelelanise kuphawu lwe-zero ngokuchanekileyo.Yandisa iqondo lobushushu kwaye ulungelelanise iqondo lobushushu ukuya (105±3)℃.Xa isikali sokubonisa singahambi, bhala phantsi ixabiso le-m1 (ukulinganisa ukuchaneka ngu-5mg).
Isiqulatho samanzi (ilahleko ngokomiswa X (%)) ukubala:
X = (m1 / 5.0) × 100
Ixesha lokuposa: Nov-02-2021