Trial Purpose:
The purpose of this experiment was to evaluate the effectiveness of cleaners to remove Rosin 2 (Pitch) and Protectocoat from glass substrates using heated ultrasonics.
Date Run:
07/23/2020Experiment Procedure:
Two glass coupons were obtained for each of the cleaners tested. Cleaners were prepared at the following concentrations and temperatures: Smart Solve 605, RB Degreaser, SC Actisolv, Propylene carbonate, Dimethyl glutarate, SC Maxisolv, and Mirachem 500. An additional test was added to test unheated immersion with Mirachem 500 as a baseline comparison for the product. One coupon was soiled with the Rosin 2 (Pitch) and the other with Protectocoat by using a swab to coat the bottom third of the coupon, and soiled weights were obtained. Coupons were submerged into their respective heated cleaners using ultrasonics for 30 minutes. After 30 minutes passed, coupons were removed and allowed to air dry. Once dry a clean weight was obtained. Effectiveness of cleaners was then determined.
Trial Results:
| Cleaner | Contaminant | Initial wt. of cont. | Final wt. of cont. | % Cont. Removed | %AVG |
| Smart Solve 605 | Rosin 2 Pitch | 0.4488 | 0.0213 | 95.25 | 54.77 |
| Protect-o-coat | 0.0098 | 0.0084 | 14.29 | ||
| RB Degreaser | Rosin 2 Pitch | 0.3641 | 0.0012 | 99.67 | 50.85 |
| Protect-o-coat | 0.0196 | 0.0192 | 2.04 | ||
| SC Actisolv | Rosin 2 Pitch | 0.3311 | 0.0032 | 99.03 | 90.53 |
| Protect-o-coat | 0.0284 | 0.0051 | 82.04 | ||
| Propylene carbonate | Rosin 2 Pitch | 0.4045 | 0.0438 | 89.17 | 34.2 |
| Protect-o-coat | 0.0207 | 0.025 | -20.78 | ||
| Dimethyl glutarate | Rosin 2 Pitch | 0.4245 | 0.0016 | 99.62 | 96.8 |
| Protect-o-coat | 0.0133 | 0.0008 | 93.98 | ||
| SC Maxisolv | Rosin 2 Pitch | 0.4252 | 0.0007 | 99.84 | 97.2 |
| Protect-o-coat | 0.0184 | 0.001 | 94.56 | ||
| Mirachem 500 | Rosin 2 Pitch | 0.525 | 0.0142 | 97.3 | 95.89 |
| Protect-o-coat | 0.0181 | 0.001 | 94.48 | ||
| Mirachem 500* | Rosin 2 Pitch | 0.3652 | 0.3662 | -0.27 | 1.56 |
| Protect-o-coat | 0.0148 | 0.0143 | 3.38 |
*Unheated Immersion
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.Conclusion:
SC Maxisolv 100% at 120°F using ultrasonics was the most effective at removing both soils from glass coupons removing an average of 97.20%. Dimethyl glutarate was the second most effective removing an average of 96.80%, Mirachem 500 the third most removing an average of 95.89%, and SC Actisolv the fourth most removing an average of 90.53%. Next step will be to test on parts.
