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Toxics Use Reduction Institute · Surface Solutions Laboratory
 
Toxics Use Reduction Institute




Surface Solutions Laboratory

Trial Report



Trial Number 0

(Client Number 41, Project Number 1)

Trial Purpose: To clean supplied parts with two cleaners

Date Run: 08/08/97

Experiment Procedure:
Three samples were selected at random from the supplied parts. Two cleaners were chosen using the lab's database. The Brulin cleaner was used full strength and at the manufacturer's recommended dilution (10%). Loctite was used full strength.
The cleaner was applied to the sample using a swab. After the application, the cleaner was wiped off using a paper towel. The amount of pressure used to clean the contaminant off of the sample was noted. The two Brulin solutions were applied to opposite ends of one sample, Loctite was used on the second and the final coupon was cleaned using just the paper towel.

SUBSTRATE MATERIAL: Plastic
CONTAMINANTS: 3M contact cement--30NF
CONTAMINATING PROCESS USED: Samples were received contaminated from client

Trial Results
Cleaning solution  Brulin 100%        Brulin 10%             Loctite 100%           No cleaner
Observations        good cleaning    acceptable            excellent cleaning   fair cleaning
                             some pressure   cleaning                 little pressure           a lot of pressure
                             required             a lot of pressure     required                   required
                                                       required 

The Loctite cleaner was the quickest and easiest of the selected cleaning solutions.  The Brulin 100% solution was the next best, but it required more
time and effort than the Loctite solution.  The Brulin 10% solution required a lot of effort to produce any cleaning; the 10% solution needed almost
as much effort as using no cleaner.


Success Rating
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.

Conclusion
As of the preliminary trial, the Loctite solution was the best of the selected cleaning chemistries. The Brulin solution showed adequate cleaning when used at full strength.
The next set of testing will include these two solutions as well as some other cleaners. The stock laminate will be cut into coupons and contaminated with the supplied cement. The cleaning procedure will be the same. Results will be measured through visual, tactile and gravimetric methods.