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Trial #3

Trial #3

To test the efficacy two solvents in removing two types of glue adhesives from stainless steel coupons using unheated immersion methods.

2023

32

2

0

0

Coupon

09/06/2023

0.00

Immersion/Soak

Amelia Wagner

Stainless Steel

Adhesive

None

None

Gravimetric

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.  

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

Tert butyl acetate us not effective in removing either adhesive.  Sec butyl acetate will need to be retested.  

No relation

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