Abstract
A material with high damping property and based on epoxy/polyacrylate (EP/PA) composite particles was synthesized by two-stage emulsion polymerization. Transmission electron microscopy (TEM) showed that the composite particles have a spherical morphology, a core–shell structure and a diameter of 100 nm–130 nm. Fourier transform infrared spectra (FTIR) indicated the cross-linking between EP groups in the core layer and carboxyl groups in the shell layer of the composite particles during film formation. The cross-linking reaction improved the dynamic mechanical property by the interaction of core and shell polymers. The effects of the cross-linking agent and ratio of the two polymers on the damping capacity were studied by dynamic mechanical analysis (DMA). DMA results revealed that a certain amount of acrylic acid could markedly enhance the loss factor (tan δ) and slightly widen the damping temperature range. When the EP/PA ratio was 1:7, peak values for tan δ of the composite materials could reach 2.10, exceeding the value for most damping materials. The result implies that the EP/PA composites have great potential application in damping steel surface coatings.
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Acknowledgments
The authors are grateful to the financial support by National Natural Science Foundation of China (No.21304030), Hebei Science and Technology planning Project of China (No. 15391201D), Science and Technology Foundation of Colleges and universities in Hebei Province, China (No. ZD2014086) and Scientific research foundation for returned scholars preferred project of Hebei Province, China (No. C201400516).
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Tang, E., Yao, M., Du, P. et al. Synthesis and dynamic mechanical study of core–shell structure epoxy/polyacrylate composite particle. J Polym Res 23, 204 (2016). https://doi.org/10.1007/s10965-016-1095-1
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DOI: https://doi.org/10.1007/s10965-016-1095-1