Stress softening (Mullins effect) is observed in gum natural rubber vulcanizates. The magnitude of this softening is similar to that in carbon black-filled vulcanizates. The amount of stress softening is slightly greater in vulcanizates cured to produce predominantly polysulfide crosslinks than in t
Stress softening in natural rubber vulcanizates. Part III. Carbon black-filled vulcanizates
โ Scribed by J. A. C. Harwood; A. R. Payne
- Publisher
- John Wiley and Sons
- Year
- 1966
- Tongue
- English
- Weight
- 463 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0021-8995
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Considerable stress softening (Mullins effect) occurs in both gum and filler loaded vulcanizates of natural rubber and SBR. When compared at the same stress, the extent of softening is similar in bdth gum and filled vulcaniates. The stress softening is shown to be mainly due to changes in the rubber
## Abstract The dynamic shear modulus at very high strains, (__G__~โ~), of carbon black filler loaded vulcanizates is regarded as due to the product of two factors: (__a__) a hydrodynamic interaction due to filler particles, and (__b__) a second factor for which evidence is given suggesting that it