Nigute ushobora gupima Cellulose ether？

1. Kugaragara:

Kugenzura mu buryo bugaragara munsi yumucyo utatanye.

2. Viscosity:

Gupima ml 400 ya beaker ikurura cyane, ipima 294 g y'amazi muri yo, fungura mixer, hanyuma wongereho 6.0 g ya selile yapimye; kubyutsa ubudahwema kugeza bishonge burundu, hanyuma ukore igisubizo cya 2%; Nyuma ya 3-4 h ku bushyuhe bwubushakashatsi (20 ± 2) ℃; koresha NDJ-1 izenguruka viscometer kugirango ugerageze, hanyuma uhitemo icyerekezo cya viscometer gikwiye numero ya rotor mugihe cyibizamini. Fungura rotor uyishyire mubisubizo ureke ihagarare muminota 3-5; fungura kuri switch hanyuma utegereze agaciro gahamye, hanyuma wandike ibisubizo. Icyitonderwa: (MC 40,000, 60.000, 75.000) Hitamo rot ya No 4 ifite umuvuduko wa 6 revolisiyo.

3. Imiterere y'amazi:

Itegereze inzira n'umuvuduko wo gusesa mugihe cyo kubishyira mubisubizo 2%.

4. Ibirimo ivu:

Fata farufari ikomeye hanyuma uyitwike mu ziko ritetse ifarashi, uyikonje muri desiccator, hanyuma uyipime kugeza uburemere buhoraho. Gupima neza garama (5 ~ 10) z'icyitegererezo mubikomeye, banza utekeshe umusaraba ku itanura ry'amashanyarazi, hanyuma imaze kugera kuri karuboni yuzuye, uyishyire mu itanura ritetse ifarashi nka (3 ~ 4) h, hanyuma ubishyire. muri desiccator kugirango akonje. Gupima kugeza uburemere burigihe. Kubara ivu (X):

X = (m2-m1) / m0 × 100

Muri formula: m1 —— misa yingenzi, g;

m2 —— Ubwinshi bwibyingenzi nivu nyuma yo gutwikwa, g;

m0 —— ubwinshi bw'icyitegererezo, g;

5. Ibirimo amazi (gutakaza kumisha):

Gupima icyitegererezo 5.0g kumurongo wa analyse yihuta yisesengura hanyuma uyihuze nikimenyetso cya zeru neza. Ongera ubushyuhe kandi uhindure ubushyuhe kuri (105 ± 3) ℃. Iyo igipimo cyerekana kitimutse, andika agaciro m1 (gupima ukuri ni 5mg).

Ibirimo amazi (igihombo kumisha X (%)) kubara:

X = (m1 / 5.0) × 100