| BaTiO3 / (PU/UP-IPNS)复合材料的相容性、力学性能和阻尼性能研究(英) |
| Morphology, Mechanical and Damping Properties of BaTiO3 / (PU/UP-IPNs) Composites |
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| 摘要: 以水热法合成的BaTiO3纤维和同步法制备的互穿聚合物网络为原料，采用原位分散聚合法获得了一系列BaTiO3 / (PU/UP-IPNs)复合材料。采用傅立叶交换红外分光光度计跟踪考察了IPNs的聚合过程，用透射电镜观测了IPNs及其复合物的形貌。结果表明，IPNs中两相相畴尺寸在纳米级范围内，在此基础上，实现了BaTiO3纤维状的复合。动态力学性能的检测结果表明，相较纯IPNs，复合材料的阻尼损耗模量和阻尼损耗因子值均有所提高，且在低温区 |
| 关键词: 互穿聚合物网络(IPNs) BaTiO3纤维 复合材料 阻尼性能 相容性 |
| 基金项目: |
| Abstract: A series of BaTiO3 / Interpenetrating polymer networks (IPNs) composites, composed of BaTiO3 fibers synthesized by hydrothermal method and simultaneous IPNs based on polyurethane (PU) and unsaturated polyester resin (UP), were prepared by in-situ polymerization process. Fourier transform infrared spectroscopy (FTIR) was used to trace polymerization process of IPNs and transmission electron micrographs (TEM) was used to characterize the morphology and miscibility among multiple phases of IPNs and composites. The results indicated that the domains between two phases in IPNs were constricted in nanometer scales, and BaTiO3 dispersed in composites mostly with fiber structures. The damping property studies of IPNs and composites revealed that, the value of loss factor (tanδ) and loss modulus (E″) detected by dynamic mechanical thermal analyzer (DMTA) both increased with the adding amounts of BaTiO3 in composites, and the shoulder peak of tanδ and E″ curves both appeared apparently at low temperature ranges. Maximum tanδ values of all composites were above 0.4 and the maximum E″ values of composites increased above 100 MPa in nearly 50 ℃ ranges compared with that of IPNs. The mechanical properties study showed that the continuous phase of IPNs accounted for the major mechanical properties and the adding of BaTiO3 both decreased the values of tensile strength and elongation at break of composites. |
| Keywords: interpenetrating polymer networks (IPNs) barium titanate (BaTiO3) fiber composites damping property morphology |
| 投稿时间：2004-10-10 修订日期：2005-01-30 |
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| 唐冬雁,强亮生,金政,赵连城.BaTiO3 / (PU/UP-IPNS)复合材料的相容性、力学性能和阻尼性能研究(英)[J].无机化学学报,2005,21(6):816-821. |
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