Preparation and Application of Colemanite Matrix Complex Flame Retardant

Abstract:

In this paper, stearic acid, titanate coupling agent (NDZ-311) and silane coupling agent (KH-570) were selected as modifiers to modify colemanite powder and the resulted products were characterized by XRD and FT-IR. The results show that the surfaces of colemanite particles were effectively modified by stearic acid and coupling agents. The modified colemanite /EVA composites were then prepared and the effect of coupling agent addition on the mechanical properties and flame retardancy of EVA composites was investigated. The EVA composite doped with 40% of modified colemanite (coupling agent accounting for 1% of colemanite mass) exhibits a tensile strength of 9.80MPa, a breaking elongation of 696.5% and a limit oxygen index of 29.6%. The complex flame retardant was obtained by means of grafting amine polyphosphate onto the surface of colemanite using polyphosphoric acid (PPA) and laurylamine as raw materials. The obtained product was analyzed by XRD and FT-IR. The EVA composite doped with 40% of the complex flame retardant has a tensile strength of 8.57MPa, a breaking elongation of 671.3% and a limit oxygen index of 32.6%.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 670-676
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.670
• Online since: April 2016
• Authors: Jian Chu Zhong, Yun Xia Cui, Jun Zhu, Hong Zhi Wang
• Keywords: Amine Polyphosphate, Colemanite, Complex Flame Retardant, EVA, Mechanical Properties

References

[1] C. Kaynak, N. A. Isitman: Polymer Degradation and Stability. 96 (2011) 798-807.

[2] U. Atikler, H. Demir, F. Tokatli, F. Tihminlioglu, D. Balköse and S. Ülkü: Polymer Degradation and Stability. 91 (2006) 1563-1570.

DOI: 10.1016/j.polymdegradstab.2005.09.017

[3] Y. Zhang: Study on the synthesis and modification of calcium borate flame retardant (Ph.D., Dalian: Dalian university of technology, 2011), 65-69.

[4] L. Ji, J. Zhong, H. Wang: Materials Review. 10 (2013) 59-62.

[5] B. Toure, J. -M. Lopez Cuesta, M. Longerey and A. Crespy: Polymer Degradation and Stability. 44 (1996) 345-352.

[6] R. V. Kasoweski, WO 1999/46250. (1999).

[7] X. -Z. Mo, Z. -F. Liao, C. -F. Gan: Functional materials. 35(2004)1725-1727.

[8] K. Suzuki, K. Shishido, M. Shindo, WO1997/044377A. (1997).

[9] X. -S. Wang, J. -W. Ye, H. -C. Pang: Functional materials. 12 (2010)2124-2127.

[10] L.H. Liu: Chemical Thechnology Market. 10(2010)31-33.

[11] W. Wu, S. Lu: Powder Technology. 1-2 (2003)41-48.

[12] K, Shi: Journal of Taiyuan University of Technology. 1 (1987)12-20.

[13] S. Liu, J. Ying, X. Zhou, X. Xie: Materials Letters. 63(2009)911-913.

[14] R. Hui, C. Guan, D. Hou: Journal of Anshan Teachers College. 1(2001)95-98.