The purpose of this experiment is to determine the effectiveness of seven cleaners in removing rosin from glass substrates using heated immersion.
Date Run:
07/10/2020
Experiment Procedure:
Four glass coupons were obtained and weighed for each of the seven cleaners. One coupon was soiled with one rosin by applying the rosin to the bottom third of the coupon with a swab and a soiled weight was obtained. The cleaning solutions were prepared for heated immersion by the following concentrations and temperatures: Smart Solve 605 100% at 150°F, RB Degreaser Cleaner 20% at 180°F, Valtron SP 2275 2% at 150°F, SC Actisolv 50% at 120°F, Propylene carbonate 100% at 180°F, Dimethyl glutarate 100% at 180°F, and SC Maxisolv 100% at 120°F. Once cleaners reached the proper temperature, the coupons were submerged into their respective cleaners for 30 minutes. After 30 minutes had passed, coupons were allowed to air dry if needed and a final clean weight was obtained. Effectiveness of cleaning was determined for each solution.
Trial Results:
Cleaner
Rosin
Initial Weight of cont.
Final Weight of cont.
% Cont. Removed
Overall % Removal
Smart Solve 605
1
0.5175
0.0048
99.07
97.01
2
0.354
0.0138
96.10
3
0.549
0.0165
96.99
4
0.3649
0.015
95.89
RB Degreaser Cleaner
1
0.3892
0.2438
37.36
27.93
2
0.4618
0.4509
2.36
3
0.3554
0.1386
61.00
4
0.3068
0.273
11.02
Valtron SP 2275
1
0.5012
0.4984
0.56
-0.52
2
0.3369
0.3378
-0.27
3
0.3735
0.3769
-0.91
4
0.3732
0.3786
-1.45
SC Actisolv
1
0.5025
0.5588
-11.20
0.24
2
0.4586
0.5431
-18.43
3
0.6233
1.1493
-84.39
4
0.3824
-0.0573
114.98
Propylene Carbonate
1
0.9206
0.7713
16.22
8.75
2
0.5596
0.587
-4.90
3
0.4738
0.132
72.14
4
0.6335
0.9404
-48.45
Dimethyl glutarate
1
0.6615
0.0017
99.74
97.47
2
0.6277
0.0532
91.52
3
0.4443
0.005
98.87
4
0.6316
0.0017
99.73
SC Maxisolv
1
0.3393
0.0087
97.44
73.24
2
0.3788
0.3842
-1.43
3
0.6693
0.0282
95.79
4
0.3397
-0.004
101.18
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Dimethyl glutarate and SmartSolve 605 were the only two cleaners that effectively removed all four rosin contaminants on the substrate within 30 minutes of heated immersion.
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