Effective: Dec. 9, 2002 - Physical Materials Testing of Cured 1/2 Inch Molded Rubber.
Received: Four (4) cured, 1/2 inch thick, black material sections not identified by
Customer.
Content: 95% + recycled tire rubber content, with a virgin rubber binder.
ORIGINAL PHYSICAL PROPERTIES, ASTM D 412-98a, D 2240-02
Die C dumbbells tested at 20 in/min.
| | | Results: |
| | Tensile Strength, psi | 952 |
| | Ultimate Elongation, % | 212 |
| | 100% Modulus, psi | 355 |
| | 200% Modulus, psi | 859 |
COEFFICIENT OF FRICTION, ASTM D 1894-01 (Modified)
| Procedure: | Two specimens were prepared from each submitted sample by mounting a 2" x 2" section on a steel plate. Each specimen was pulled at 5 in/min. across a cold-rolled, high carbon steel substrate, polished smooth to the touch. The sample was loaded with a 5 lb weight. The average was reported. |
| | | STATIC, | DYNAMIC, |
| | Textured Side | 1.22776 | 1.09260 |
| | Smooth Side | 1.20098 | 1.02618 |
FLAMMABILITY RESISTANCE, UL-94 HB
5" long x 0.5" wide specimens exposed to flame for 30 seconds. Median results of three specimens reported.
| | | RESULTS | REQUIREMENTS | PASS/FAIL |
| | Burn Rate, mm/min. | 7.5 | 40 max | Pass |
UV EXPOSURE, ASTM D 925-88(00)
Die C dumbbell specimens exposed 72 hours, ten inches below a 275 W Type RS UV Bulb.
| | | RESULTS |
| | Tensile Strength, % change | +5.9 |
| | Elongation, % change | +6.7 |
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