Please wait.'

Page is loading'


Home , Forum , Special problems & miscellaneous , Pigment volume concentration

Friday, 01 August 2014

Pigment volume concentration

3 Posts

Thursday 11 September 2008 1:00:00 am

If you are given a commercial paint sample(formula unknown) and you test it for %ash content,%weight solids and specific gravity, how would you calculate pigment volume concentration from this data please? Your expertise is much appreciated. Thanks.

Author Message

  • Currently 0 out of 5 Stars.
  • 1
  • 2
  • 3
  • 4
  • 5
Thank you for rating! Rating: 0/5 (0 votes cast)
You have already rated this page, you can only rate it once! Rating: 0/5 (0 votes cast)
Your rating has been changed, thanks for rating! Rating: 0/5 (0 votes cast)

Monday 15 September 2008 1:00:00 am

PVC is volume of pigments and extender over volume of pigment and extender and binder solids.

  • Currently 0 out of 5 Stars.
  • 1
  • 2
  • 3
  • 4
  • 5
Thank you for rating! Rating: 0/5 (0 votes cast)
You have already rated this page, you can only rate it once! Rating: 0/5 (0 votes cast)
Your rating has been changed, thanks for rating! Rating: 0/5 (0 votes cast)

Tuesday 16 September 2008 1:00:00 am

To calculate the PVC of a unknown sample you have to prepare different PVC samples in your lab and then compare those with the given sample. In your Lab samples you can decrease and increase TiO2 percentage to adjust its hiding power. Make sure you have also ajusted the SG of your lab samples equivalent to the unknown sample by using the exact filler. Along with SG you can also test plate flow to get an idea about the type of filler being used in the unknown sample.
To compare your lab samples with unknown sample spray all of these on same film thickness on some marked CRS panels so you can quite easily compare the hiding power. Once your hiding power is compared then adjust the filler volume as per measure SG of the unknown sample. Thats how you can evalue the Pigment volume concentration of the unkown sample with out using any advance technique.

  • Currently 0 out of 5 Stars.
  • 1
  • 2
  • 3
  • 4
  • 5
Thank you for rating! Rating: 0/5 (0 votes cast)
You have already rated this page, you can only rate it once! Rating: 0/5 (0 votes cast)
Your rating has been changed, thanks for rating! Rating: 0/5 (0 votes cast)

Wednesday 24 September 2008 1:00:00 am

You have to find the solids by volume(areaXDFT)which is the comined volume of the binder and the pigment mixture in the paint. Knowing the binder content and assuming its SG (eg. 1.0 or 1.05)you can calculate an aproximate PVC of an unknown paint.

top of page