how to test aluminium paste quality ?
Particle size test steps
1, First pick up one paper cup , put 0.5gram aluminium paste , then put 20ML 150# solvent ,mixer well and get dilution
2, then open particle size instrument , touch cycle button
3,pouring down 150# solvent , then touch ultrasonic
4,then open computer start to test
5, then touch document , then touch next step , then touch normal test , and confirmed
6, the instrument will be come out , it is lower concentration , please add sample ,then should be pouring down just adjust well al slurry , how many gram should be pouring , it is depend on shading coefficient 10-15%, then add according ture data , the data will be show D50, it is final size
Solid test
1,solid test : you should be pick up 10gram al paste from kneading machine, 2,then use fire burn it
3,,should be give 100% burn , after burn then check how many gram you still have ,
4,if have 6gram then solid is 6/10=60%
Glossy and whitness
1， Need use 2 paper cups (one is use for compare), one is write which one we want to test
2， then each one pick up aluminium paste 0.5gram +xylene 0.5gram + 3gram varish mixer
3， Then use 25um roller put each one al paste, should be at same line ,then use some strengh uniformly scraper it
2, then use 25um roller as vedieo show then press to plates
then theck glossy and whiteness ,
3, normally we check by eyes , becuase china glossy test equiment always not accurate .
Leafing test
1, leafing test : pick up 1.5gram al paste +9ml turpentine oil need mix 10minutes until very uniform,
2, then pour to a clear tube , then use a clear metal saw into the tube , should be into 8.5cm
3,then waiting 2 minutes take out metal saw and check , how many cm can be increase at vedieo
4. if it is to 7.5cm ,then leafing value is 7.5/8.5=88.2%
