requalification of expired paints & swelling test
requalification of expired paints & swelling test
(OP)
I have three questions:
1- The Epoxy coaltar Paint in my company is expired(according to paint manufacturer data sheet), but I decide to use it again and
claim that is usable.what is the complete tests for re qualfication of expired paints. considering that this paint is used for internal of firewater storage tank.
2-my paint engineer said that swelling test that used for evaluation of attack of tank fluid to paint, shall be employed.what is the swelling test for paints? and this test is required for re qualified of this Paint? for more information one paper about swelling of paint films is attached.
3- what is the detail procedure for adhesion test of Epoxy coaltar Paints According to SSPC-Paint16?
1- The Epoxy coaltar Paint in my company is expired(according to paint manufacturer data sheet), but I decide to use it again and
claim that is usable.what is the complete tests for re qualfication of expired paints. considering that this paint is used for internal of firewater storage tank.
2-my paint engineer said that swelling test that used for evaluation of attack of tank fluid to paint, shall be employed.what is the swelling test for paints? and this test is required for re qualified of this Paint? for more information one paper about swelling of paint films is attached.
3- what is the detail procedure for adhesion test of Epoxy coaltar Paints According to SSPC-Paint16?





RE: requalification of expired paints & swelling test
3 -- The procedure is available from: http://www.sspc.org/market-place/standards/sspc-pa...
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RE: requalification of expired paints & swelling test
1) On what basis did you make this decision? Epoxies have a definite shelf life. Did you get a written approval from the manufacturer's technical rep/lab on official letterhead? Note: A letter from a sales rep doesn't count. Given your next sentences, you had no business making this decision. Hire a qualified paint lab, with qualified paint chemists. The testing required varies depending on the coating, and on its uses.
2) See above. Swelling testing is just one of many tests which could be employed.
3) What does Paint 16 say? Did you perform the testing listed in Paint 16? if so, what were the results of new material, and expired material? Viscosity, amine value and EEW are of particular interest.
RE: requalification of expired paints & swelling test
Dik
RE: requalification of expired paints & swelling test
RE: requalification of expired paints & swelling test