Talc powder in the production process more processes, this product is mainly talc ore as raw materials。The product can be sold after passing the inspection, so how to test it?
1. Specific surface area: measured by GSL-101BII laser edge analyzer。
2, average particle size: the middle value of the cumulative weight percentage of particle size distribution measured by the laser particle size analyzer。
3, 325 mesh residue: The wet method will be 1000g/m3 sample on the 325 target sieve filtration, calculate the residual proportion。
4, specific gravity: 5g sample in a 20cc graduated cylinder, from a height of 5cm natural drop 100 times measured value。
5, whiteness: automatic whiteness meter measurement。
6, oil absorption: JIS-K5101 method, adding flaxseed oil titration, until the determination of lumpy value。
The above is how to detect the main content of talc powder。
