Browse Client Types

Browse past lab clients by general industry sectors

Trial Number 1

Client Number 7

Project Number 1

Trial Purpose:

Daraclean 294xx results

Date Run:

06/01/1995

Experiment Procedure:

This trial is to determine the effectiveness of both Grace Daraclean 294xx and Grace Daraclean 283 in removing wax from various coupons. The Daraclean 294xx is a semi- aqueous terpene whereas the Daraclean 283 is an aqueous cleaner.
The coupons were weighed prior to contamination and then dipped in a beaker of melted wax. Once the wax hardened the coupons were then weighed again. Cleaning was done in a beaker at 160 F with air sparging used as agitation for 15 minutes. The coupons were then rinsed for 5 minutes in a tap water rinse at 150 F. Drying was performed by running the coupons under air knives for 2 minutes and then placing the coupons in a convection oven set at 125 F for 90 minutes. The coupons were then left to cool overnight and then weighed the next morning. A total of four runs were performed for the Daraclean 294xx (one run for each different substrate).

Trial Results:

EXPERIMENTAL DATA LOG

                                                    GRAVIMENTRIC ANALYSIS

sample # and substrate

 

clean mass (g)

 

mass with contamination (g)

 

mass after cleaning (g)

 

contaminant removed (g)

 

Percent Removal
#5 Aluminum  21.0724 21.8289 21.0752 0.7537 99.63%
#6 Aluminum 21.0246 21.8274 21.0283 0.7991 99.54%
#7 Aluminum 21.0166 21.4187 21.0205 0.3982 99.03%
#6097 Copper 35.6108 36.5260 35.6148 0.9112 99.56%
#3658 Copper 35.3669 36.1804 35.3678 0.8126 99.89%
#4076 Copper 35.4092 36.2176 35.4113 0.8063 99.74%
#4317 Brass 34.4331 35.2092 34.4330 0.7762 100.01%
#5370 Brass 34.5389 35.7766 34.5381 1.2385 100.06%
#6077 Brass 34.6109 35.5091 34.6073 0.9018 100.40%
#27 Steel 188.2295 189.4184 188.2278 1.1906 100.14%
#10 Steel 148.3131 149.4491 148.3130 1.1361 100.01%
#8 Steel 152.5285 153.8135 152.5270 1.2865 100.12%

The 294xx tends to foam up a little bit but did a very good job of removing the wax from the coupons.  The worst removal was encountered on the Aluminum coupons whereas the best removal was on the steel coupons.  Small little droplets of wax were noticed on the coupons, but this is believed to be caused by dragout from the cleaner solution due to the fact that some of these droplets were on areas of the coupons that were not contaminated with wax.  Once the cleaner temperature reaches below 150 F the wax started to solidify thus reducing the cleaning efficiency.

Success Rating:

Test incomplete or inconclusive.

Conclusion:

Temperatures should be kept at least 160 F.  The biggest problem that needs to be looked into is removing the wax from the cleaner bath to avoid drag out.

Save Report as a PDF