To evaluate successful cleaners under varying operating conditions
Date Run:
02/25/2002
Experiment Procedure:
Two products from the previous trial were made into two concentrations, 5 and 10%, using DI water in 600 ml beakers. These dilutions were heated to two temperatures, 130 and 150 F on a hot plate. The various operating conditions used were:
Product
Conc (%)
Time (min)
Temp (F)
Surface Cleanse 930
10
10
130
Surface Cleanse 930
10
10
150
Surface Cleanse 930
10
5
150
SC Aircraft & Metal
5
10
130
SC Aircraft & Metal
5
5
150
SC Aircraft & Metal
5
10
150
SC Aircraft & Metal
10
5
130
SC Aircraft & Metal
10
10
130
SC Aircraft & Metal
10
5
150
SC Aircraft & Metal
10
10
150
Thirty preweighed coupons were coated with the New England Industrial Lubricants NEILCUT 333 using a hand held swab. Coupons were then weighed again to determine the amount of lubricant added. Three coupons were cleaned in each solution for either 5 or 10 minutes using stir-bar agitation. Following cleaning, the coupons were rinsed in tap water at 120 F for 30 seconds and dried using a Master appliance heat gun at 500 F for 1 minute. Once coupons were cooled to room temperature, final weights were recorded and efficiencies were calculated.
Trial Results:
The SC Aircraft & Metal cleaner was successful in removing the oil under multiple operating conditions. The effectiveness of the Surface Cleanse 930 decreased as temperature and time were increased. The following table lists the efficiencies for both products under the different settings.
Cleaner
Time/Temp
Coupon 1
Coupon 2
Coupon 3
Average
Std Dev
Surface Cleanse 930 @10%
10/130
76.10
73.84
87.23
79.06
7.17
10/150
-26.61
-108.36
17.33
-39.21
63.78
5/150
-49.27
3.48
6.74
-13.02
31.44
SC Aircraft @ 5%
10/130
100.44
102.09
100.41
100.98
0.96
5/150
98.93
98.72
99.36
99.01
0.33
10/150
97.84
93.42
85.89
92.38
6.04
SC Aircraft @ 10%
5/130
98.46
96.95
100.41
98.61
1.74
10/130
100.46
100.80
100.98
100.75
0.26
5/150
100.18
100.07
98.92
99.72
0.70
10/150
100.58
100.19
97.68
99.48
1.57
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The increase in temperature, time, concentration or the combination of each resulted in improved cleaning efficiency for the SC Aircraft & Metal cleaner.
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