Preparation and Study of EVA/Poplar Wood Powders Composite Foaming Material

Abstract:

EVA/Poplar wood powders composite foaming materials were prepared from etheylen-vinyl acetate-copolymer (EVA) as matrix, poplar wood powders as filler, azodicarbonamide (AC) as foaming agent, dicumyl peroxide (DCP) as cross-linking agent through the method of compression molding foaming. EVA with 15% VA (EVA 15) was chosen as foaming matrix resin by the rotational rheometer. The results showed that an optimum foaming effect had been gained when the AC and DCP were 11 wt% and 0.9 wt%, respectively. And under the condition, the foam density ascended with the increase of poplar wood powders content, when the content arrived to 30%, the resilience reached up to a maximum of 90.1%. The foam cellular structure was researched by SEM, and it showed that when poplar wood powders content was below 30%, the foam holes appeared round or oval, the holes’ size were rather evenly. And the foam cells became more and more unevenly, even collapsed when poplar wood powders up to the content of 40%.

• Periodical: Advanced Materials Research (Volume 1053)
• Pages: 276-282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1053.276
• Online since: October 2014
• Authors: Fu Zhi Li, Long Ouyang, Pu Shi, Lu Wang, Yue Jun Liu*
• Keywords: Cell Structure, EVA, Poplar Wood Powders, Rheological Measurements

References

[1] S. T. Lee, N. S. Ramesh. Polymeric Foams Mechanisms and Materials. CRC Press, 2004, pp.1-3.

[2] Pushpadass H A, Weber R W, Hanna M A: Industrial & Engineering Chemistry Research, 2008, 47(14): 4736-4742.

[3] G.S. ZENG, R.Z. LIN, C. MENG, et al: Journal of Functional Materials，2012, 43(6): 708-711.

[4] Rodriguez‐Perez M A, Simoes R D, Roman‐Lorza S, et al: Polymer Engineering & Science, 2012, 52(1): 62-70.

[5] Glenn G M, Klamczynski A K, Holtman K M, et al: Journal of agricultural and food chemistry, 2007, 55(10): 3936-3943.

[6] X.F. Li, X.G. Luo: China Plastics, 2005, 19(7): 120-123.

[7] X.F. Li, X.G. Luo: Journal of chemical industry and engineering (china), 2005, 56(12): 138-142.

[8] Feldman D, Banu D: Journal of applied polymer science, 1997, 66(9): 1731-1744.

[9] Q. Li, and Matuana, L. M: Journal of Applied Polymer Science. 2003, 88: 3139-3150.

[10] Z.R. Xu, Park H Y, Kim H Y, et al: Macromolecular Symposia. WILE-VCH Verlag, 2008, 264(1): 18-25.

[11] Kim M. S, Park C. C, et al: Journal of Applied Polymer Science, 2004, 94(5): 2212-2216.

[12] Riahinezhad M, Ghasemi I, et al: Polymer Composites, 2010, 31(10): 1808-1816.

[13] B.S. Zhang, Z.X. Zhang, X.F. Lv, et al: Polymer Engineering & Science, 2012, 52(1): 218-224.

[14] Jin H J, Kim D S, Lee B Y, et al: Journal of Polymer Science Part B: Polymer Physics, 2000, 38(17): 2240-2246.

[15] Gendron, R. (Ed. ). Thermoplastic foam processing: principles and development. CRC press, 2004, pp.131-137.