To evaluate residue via coefficient of friction for multipurpose aerosol cleaners
Date Run:
06/02/2009
Experiment Procedure:
Coefficient of friction was measured with an IMASS, Inc SP-102B-3M90 Slip/Peel Tester (Figure 1). Two types of friction coefficients were measured using this instrument. The first, Static CoF, was determined by obtaining the force required to move the specimen from a stationary position. The second, Sliding CoF (or Kinetic), was found by measuring the average force required to maintain movement at a certain rate. Measured forces will have peaks and valleys in the amount of force needed to keep moving. Average these values results and dividing by the weight of the object will result in the desired coefficient. Figure 1. IMASS Slip/Peel Tester
The Slip/Peel tester was first adjusted to ensure that the device was properly calibrated for the sled weight being used. A coupon was then placed and clamped onto the bed of the device. The speed of the bed was set to 45”/min. The instrument records two values, the peak, the valley and calculates the average. The device was run three times per coupon for measuring the Static CoF and three times to measure the Kinetic CoF. Each coupon’s value was averaged and then the values for each finish (three coupon averages) were averaged to get one value for the Static Coefficient of Friction and one value for the Kinetic Coefficient of Friction. The coupons were then sprayed with the supplied cleaning product. The cleaner had a 5 second dwell time on the glass coupons and then was wiped off using a Kmberly-Clark Wypall X60 reinforced wiper. A second set of readings for SCoF were recorded for the treated surface. Following the SCoF a second application of the cleaner was applied to the measuring the KCoF.
These values for treated coupons were compared to the CoF for the same untreated coupons to determine the effect on CoF.
Coefficient of Friction = Ratio of tractive (pulling) force to the normal force (sled weight):
CoF = F/N = (Tractive force)/(Normal Force) = (meter reading)/(sled weight) Sled weight = 1
Trial Results:
Three products (A00166, A0170 and SD-20) resulted in an increase in the coefficient of friction for both static and kinetic. The Formula 409 caused in a decrease in both values. One product (Mr. Jinx) had minor changes up and down for the static CoF but decreased for the kinetic CoF.
Initial CoF
Static
Kinetic
Coupon
Peak
Valley
Aver
Peak
Valley
Ave
A
540
309
458
578
331
492
593
331
472
695
329
494
581
328
483
566
330
491
B
576
274
456
560
267
443
571
273
455
583
261
460
600
266
469
585
258
461
C
433
337
382
477
324
398
487
334
397
471
314
398
493
337
404
513
329
408
D
513
405
451
578
449
512
558
446
490
591
457
509
597
441
515
598
460
522
E
518
414
431
500
416
469
491
403
453
515
418
478
445
408
462
525
419
483
Initial Averages
Static
Kinetic
Peak
Valley
Average
Peak
Valley
Average
A
571
323
471
613
330
492
B
582
271
460
576
262
455
C
471
336
394
487
322
401
D
556
431
485
589
455
514
E
485
408
449
513
418
477
Treated CoF
Static
Kinetic
Coupon #
Peak
Valley
Average
Peak
Valley
Average
A
873
617
751
701
497
615
854
590
720
720
507
616
862
650
762
755
541
659
B
721
443
615
724
588
691
1046
459
662
915
563
802
1032
432
775
921
506
793
C
900
427
542
726
515
652
672
449
572
796
528
718
730
476
609
822
521
719
D
511
430
471
481
260
383
564
442
478
510
271
400
574
459
486
546
291
434
E
393
212
315
435
251
345
394
213
297
426
232
330
483
205
306
416
214
329
Static
Kinetic
Product
Peak
Valley
Average
Peak
Valley
Average
A
863
619
744
725
515
630
B
933
445
684
853
552
762
C
767
451
574
781
521
696
D
550
444
478
512
274
406
E
423
210
306
426
232
335
Final - Initial
Static
Kinetic
Product
Peak
Valley
Average
Peak
Valley
Average
Static
Kinetic
A: A00166
292
296
273
112
185
138
increase CoF
increase CoF
B: A00170
351
174
224
277
290
307
increase CoF
increase CoF
C: Spartan
296
115
180
294
199
295
increase CoF
increase CoF
D: Claire
-6
13
-7
-77
-181
-109
-/+ CoF
decrease CoF
E: Formula 409
-61
-198
-143
-88
-185
-142
decrease CoF
decrease CoF
Success Rating:
A cleanliness study, addressing only various analytical techniques.
Conclusion:
Aspire compared equally to the Misty product and the Spartan product, all three increased the coefficient of friction after application to the glass surface.
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