Structure and Thermal Stability of Natural Rubber Reinforced with In Situ Generated Zinc Sorbate

Abstract:

In situ prepared zinc disorbate (ZDS) in natural rubber (NR) by the reaction of zinc oxide and sorbic acid was used to reinforce the dicumyl peroxide-cured NR vulcanizate. The changes in mechanical properties of NR vulcanizates after ageing and were determined and the structures and thermal stability of vulcanizates were also analyzed using scanning electron microscope and thermal gravimetric analyzer. The change ratios in tensile strength and elongation at break of NR vulcanizate with theoretic formation of ZDS of 21phr can be increased to -33 from -44 and -27 from -38 after ageing and the initial weight loss temperature of NR vulcanizate can be increased for about 7°C as compared to un-reinforced NR vulcanizate, indicating that the antioxidative behavior and thermal stability of NR can be improved significantly with theoretic formation of ZDS of 21phr.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 903-907
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.903
• Online since: May 2011
• Authors: Zong Qiang Zeng, Zheng Peng, Ling Xue Kong, Hong Chao Liu
• Keywords: Natural Rubber (NR), Reinforcement, Structure, Thermal Stability, Zinc Sorbate

References

[1] Costin R, Nagel W and Ekwall R: Rubber Chem. & Technol. 1991, 64(2), pp.152-161

[2] Molitor R P. High resilience golf ball core, U.S. Patent 4726590.(1988)

[3] Touchet P T, Rodriguez G, Butiet D P, et al. Rubber compound for tracked vehicle track pads. U.S. Patent 4843114,(1989)

[4] Klingender R C, Oyama M and Saito Y: Rubber World,1990,202(3), pp.26-31

[5] Roland C M. Cured rubber compositions of high modulus, U.S. Patent 4720526.(1988)

[6] XH Yuan, ZL Peng, Y Zhang, et al.: Journal of Applied Polymer Science, 2000,77, p.2740

[7] Z L Peng, Y X Zhang, et al.:Polymer and Polymer Composite, 2001,9(4), pp.275-282

[8] Dehui Yin, Yong Zhang, Yinxi Zhang, et al.:China Synthetic Rubber Industry, 2002, 25(22), p.104

[9] A H Du, Z L Peng, Y Zhang, et al.:Polymer Testing, 2002,21,pp.889-895

[10] A H Du, Z L Peng, Y Zhang, et al.:Journal of Applied Polymer Science, 2003, 89,pp.2192-2200

[11] Zongqiang Zeng, Heping Yu and Honglian Qian: China Rubber Industry, 2006, 53(5), pp.267-270

[12] Baochun Guo, Feng Chen, Yanda Lei, et al.:Applied Surface Science, 2009, 255(16), pp.7329-7336

[13] CM Deng, M Chen, NJ Ao, et al.:Journal of Applied Polymer Science, 2006, 101(5), pp.3442-3447.