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NBR Compound
Grade: NB70B012
| Certificate of Analysis | |||
| PROPERTY TEST REPORT | Report No.: | 104872 | |
| Customer: | Test Date | Apr. 14th, 2018 | |
| Product: | Material | NBR | |
| Expiration date: | 30 Days | Formulation No. | NB70B012 |
| Our Ref.: | Colour | Black | |
| Press Cure: | 170℃*5M | Post Cure | / |
| Room Temperature: | 23℃ | Humidity | 55% |
| Spec： ASTM | |||
| Test Item | Requested Specification | Test Result | Test Method |
| Curing Items: 175℃*180s | |||
| (TS2)Scorch time,Ts2,sec | 50±15 | 41 | ASTM D5289 |
| (Tc10)Scorch time,Tc10,sec | -- | 39 | ASTM D5289 |
| (TC50)Time to 50%cure,t'50,sec | -- | 50 | ASTM D5289 |
| (TC90)Time to 90%cure,t'90,sec | 80±20 | 81 | ASTM D5289 |
| (ML)Minimum torque,ML,lbf-in | ±0.5 | 2.15 | ASTM D5289 |
| (MH)Minimum torque,MH,lbf-in | ±3.0 | 17.73 | ASTM D5289 |
| Typical Properties Test | |||
| Hardness Shore A | 70±5 | 70 | ASTM D2240 |
| Tensile strength (MPa) | ≥10 | 16.31 | ASTM D412,Die C |
| Elongation (%) | ≥300 | 378.72 | ASTM D412,Die C |
| Modulus at 100% (MPa) | ≥3 | 5.08 | ASTM D412,Die C |
| Specific gravity (g/cm3) | 1.24±0.03 | 1.221 | ISO 2781 |
| Glue storage requirements: Storage temperature should control below room temperature, humidity not higher than 75%, should be protected from light and ultraviolet light, also should to note dust prevention and pollution prevention. The rubber should be used up within the shelf life. | |||
| Remarks: This is to certify that the above designated material has been tested and did comply with our Q.C. specifications | |||
| Total Judgement: | Pass | Tester: | Anna |
