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Measurement of coating NCO value for water-based industrial coating performance testing!

 Last Update: 2021-12-25
 Source: Internet
 Author: User

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Definition of NCO value

The value of isocyanate groups in chemical materials refers to the mass of isocyanate (-NCO) groups contained in a 100g sample

Equipment required for the measurement of paint NCO value

Analytical balance, 250mL conical flask, 50mL acid titration, 1000mL volumetric flask, glass rod coating online coatingol.

Chemicals required for the measurement of coating NCO value

Anhydrous toluene; isopropanol, 0.

· Measurement procedure·

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