To test the efficacy two solvents in removing two types of glue adhesives from stainless steel coupons using unheated immersion methods.
Date Run:
09/07/2023
Experiment Procedure:
Three pre weighed stainless steel coupons were used per each soil per cleaner for a total of 12 coupons. The coupons were then soiled with their respective adhesives, half being soiled with adhesive 5017 and half being soiled with adhesive 5024. The soils were heated to 245 degrees F in order to melt the adhesives to a degree that would allow for a small amount of adhesive to be picked up using a spatula. The adhesive on the spatula was then reheated using a heat gun in order for the adhesive to be able to spread on bottom third of the coupons. The dirty weights of the coupons were then recorded.
The coupons were then subjected to 45 minutes of unheated immersion with a stir bar set at 200 rpm in their respective cleaners. Once the coupons were removed from the cleaners, a manual wipe step was utilized (a singular wipe with a paper towel).
All coupons were allowed to air for 30 minutes before final weights were recorded.
Trial Results:
Cleaner
Soil
Initial wt of cont.
Final wt of cont.
%Cont Removed
% AVG
% Overall
sec butyl acetate
adhesive 5017
0.3289
-0.0207
106.29
93.21
83.57
0.4021
-0.0044
101.09
1.4065
0.3905
72.24
adhesive 5024
0.5201
0.1921
63.06
73.92
0.5239
0.1824
65.18
0.3394
0.0220
93.52
tert butyl acetate
adhesive 5017
0.4816
0.2125
55.88
69.37
43.12
0.5548
0.1712
69.14
0.7243
0.1224
83.10
adhesive 5024
0.8130
0.5512
32.20
43.12
0.5831
0.3390
41.86
0.6299
0.2815
55.31
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Tert butyl acetate us not effective in removing either adhesive. Sec butyl acetate will need to be retested.
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