Mensuration of painty covering power (GB1709-79)
This method is to show dye and oil of tone Chinese ink are abrade quality oar, even besmear is brushed at black and white case on vitreous board, nigrify white pattern is right by cover the smallest measure with dye, with G/m2Express.
1 instrument equipment
Glass of black and white case board (area of black and white case is 2 ×
Paintbrush (wide 25~
The knife that move black (long
Balance (feeling quantity
Plane abrasion machine; Camera bellows (over all dimension is 500 × 400 ×
2 material
The oil that move black (benevolence oil makes pure flax) :
Viscosity S/ of 140 ~ 160mPa ·
Acid value is not more than 7mgKOH/g;
Color is more than 7 (iron cobaltic colorimeter) .
3 determine measure
Say to take sample 3 ~ 5g(is accurate to
Previous12 Next