To evaluate four paint removers using a manual removal of paint and varnish from painted wooden coupons.
Date Run:
07/15/2015
Experiment Procedure:
Twelve pre-weighted wooden coupons were double coated with the supplied paint or varnish. Once dried, a second weight was recorded to determine the amount of paint added to the coupon. The cleaner was applied to each coupon with a brush and then cleaned using a 3 m Heavy Duty Scour Pad. Each coupon was scraped firmly ten times every five minutes for a 30-minute period. Then by visual and manual comparison efficiency were placed.
Trial Results:
Cleaner
Dirty Weight
Clean Weight
% Removal
Nature Sol 100
0.1190
-0.1509
-1.27
-0.1938
-0.0209
0.11
0.4473
-0.0317
-0.07
EP-921
-0.0420
-1.0986
26.16
-0.1148
-0.3655
3.18
0.3454
-0.2382
-0.69
Bio-Solv
0.2217
0.2840
1.28
-0.0294
0.0095
-0.32
0.8010
-0.4589
-0.57
Soy Gold 1000
0.2684
-2.8769
-10.72
2.2256
-2.2438
-1.00
0.8212
-0.9771
1.19
Visual Ranking
Cleaner
5 min
10 min
15 min
20 min
25 min
30 min
Nature Sol 100
3
2
2
1.5
1
1
EP-921
5
5
5
5
4.5
3
Bio-Solv
5
4.5
4
4
4
4
Soy Gold 1000
5
4.5
4.5
4.5
4
2
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Overall, Biosolve was the best paint stripper for removing all three paint contaminants. EP 921 would be another good option to look further into as a Methylene Chloride alternative on other types of paints. Future testing should include these two paint strippers.
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