Silane-silica reinforcement of some natural rubber vulcanisates

Jain A., . and Ansarifar M. A., . and Nanapoolsin T., . Silane-silica reinforcement of some natural rubber vulcanisates. pp. 11-27. ISSN 1511-1768

The hardness cyclic fatigue life cohesive tear strength tensile strength elongation at break and stored energy at rupture of some conventional accelerator/sulphur compounds of natural rubber with a sulphur to accelerator ratio of 2.5 containing 10 parts per hundred rubber by weight p.p.h.r.) precipitated amorphous white silica were measured. The compounds also contained no silane and 2.5 5 7.5 and 10 p.p.h.r.bis 3-triethoxysilylpropyl-) tetrasulphane bifunctional organosilane to prevent the silica from interfering with the reaction mechanism of sulphur cure system in the rubber. This study showed that the cyclic fatigue life and stored energy were optimised to 176 kc and 134 MJ/m 3 respectively when 7.5 p.p.h.r.silane was added to the rubber.The hardness and tensile strength improved to 45 Shore A and 31.5 MN/m 2 respectively after 10 p.p.h.r.silane was introduced into the compound.Interestingly the inclusion of silane had a detrimental effect on the cohesive tear strength and elongation at break of the vulcanisate.

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Abstract

The hardness cyclic fatigue life cohesive tear strength tensile strength elongation at break and stored energy at rupture of some conventional accelerator/sulphur compounds of natural rubber with a sulphur to accelerator ratio of 2.5 containing 10 parts per hundred rubber by weight p.p.h.r.) precipitated amorphous white silica were measured. The compounds also contained no silane and 2.5 5 7.5 and 10 p.p.h.r.bis 3-triethoxysilylpropyl-) tetrasulphane bifunctional organosilane to prevent the silica from interfering with the reaction mechanism of sulphur cure system in the rubber. This study showed that the cyclic fatigue life and stored energy were optimised to 176 kc and 134 MJ/m 3 respectively when 7.5 p.p.h.r.silane was added to the rubber.The hardness and tensile strength improved to 45 Shore A and 31.5 MN/m 2 respectively after 10 p.p.h.r.silane was introduced into the compound.Interestingly the inclusion of silane had a detrimental effect on the cohesive tear strength and elongation at break of the vulcanisate.

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Item Type:	Article
AGROVOC Term:	Natural rubber
AGROVOC Term:	Silica
AGROVOC Term:	Vulcanization
AGROVOC Term:	Sulphur
AGROVOC Term:	Physical properties
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Hardness
AGROVOC Term:	Tensile strength
AGROVOC Term:	Design
AGROVOC Term:	Costs
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23167

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