Citation
Noparatanakailas V., . and Seadan M., . Hollow cylinder sample test using a dynamic mechanical analyser. pp. 95-103. ISSN 1511-1768
Abstract
A hollow cylindrical specimen was designed for testing rubber in shear deformation using a Dynamic Mechanical Analyser series 7. Test results showed that a lower coefficient of variation for storage modulus is obtained with this system than using a compressive pellet sample in a cup-and-plate deformation. This shear test has been developed to characterise four grades of natural rubber: Standard Thai Rubber (STR) 5 L; STR 20; RSS and skim block. Over a frequency range of 0.1 Hz to 50.0 Hz and 0.5 strain the effect of rubber grade temperature degree of mastication and the amount of carbon black (N330) was investigated. Dynamic complex and real viscosities were determined and showed good agreement with the shear flow viscosity obtained from experiments with a Rosand capillary rheometer. However limitations of this shear technique were found such as a failure of test specimen at temperatures approaching the molten state of rubber and insufficient force control for very stiff specimens with high carbon black loading.
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Abstract
A hollow cylindrical specimen was designed for testing rubber in shear deformation using a Dynamic Mechanical Analyser series 7. Test results showed that a lower coefficient of variation for storage modulus is obtained with this system than using a compressive pellet sample in a cup-and-plate deformation. This shear test has been developed to characterise four grades of natural rubber: Standard Thai Rubber (STR) 5 L; STR 20; RSS and skim block. Over a frequency range of 0.1 Hz to 50.0 Hz and 0.5 strain the effect of rubber grade temperature degree of mastication and the amount of carbon black (N330) was investigated. Dynamic complex and real viscosities were determined and showed good agreement with the shear flow viscosity obtained from experiments with a Rosand capillary rheometer. However limitations of this shear technique were found such as a failure of test specimen at temperatures approaching the molten state of rubber and insufficient force control for very stiff specimens with high carbon black loading.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Rubber |
| AGROVOC Term: | Natural rubber |
| AGROVOC Term: | Storage |
| AGROVOC Term: | Temperature |
| AGROVOC Term: | Mastication |
| AGROVOC Term: | Carbon |
| AGROVOC Term: | Viscosity |
| AGROVOC Term: | Shears |
| AGROVOC Term: | Elastomers |
| AGROVOC Term: | Processing |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/22925 |
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