|
Test Item |
Test Standard and Method |
|
Color |
To grind mixture of sample, standard sample and compound and make film by thin-film device. |
|
Whiteness |
According to GB/T5950, test it via leucometer. |
|
Particle-size distributing |
Test through laser particle-size analyzer. Average particle size is got from intermediate value of particle-size distributing. |
|
Specific Area |
Transferred from average particle size. It refers relative area of 1g material. |
|
Apparent Specific Gravity |
50g sample in 100cc metering cylinder with calibration, average measured value after sample dropping down from 5cm height 150 times. |
|
Settling Volume |
Put 15g samples into the 100cc measuring cylinder attached with bolt, add 100cc of water to the cylinder and then shake it tempestuously for a moment. Test settling volume after one hour. |
|
Oil Absorption |
JIS-K510 method: add flaxseed oil till it turns to lump |
|
Reducing Power |
According to GB5211.16-88, grinding mixture of some white pigment and blue paste and outsight reducing power. |
|
Hiding Power |
Make color paste and brush it on glass plate with checkerboard image evenly. The lowest usage( g/m2)stands for its hiding power |
|
Residue at 325 mesh |
GB5211.18-88: filtrate 1000g sample which is put on 325 mesh strainer by damp process. |
|
Volatile at 105℃ |
GB5211.3-85: 110℃，two hours. |
|
Water Soluble Matter |
GB5211.2-85: extraction. |
|
Density |
GB1713-79: pycnometer method. |
|
Light resistance |
Observe the degree of discoloration of the Sample plate and the standard plate by exposuring, and evaluate the degree of light resistance. |
|
PH Value |
Water extraction and measured by PH survey. |
|
Ignition Loss |
Measure sample quantity after igniting quantitative sample at 900℃. |
|
Abrasion Value |
|
