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首页> 外文期刊>Journal of Applied Polymer Science >Phase transformation mechanisms and piezoelectric properties of poly(vinylidene fluoride)/montmorillonite composite
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Phase transformation mechanisms and piezoelectric properties of poly(vinylidene fluoride)/montmorillonite composite

机译：聚偏氟乙烯/蒙脱土复合材料的相变机理和压电性能

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摘要

Poly(vinylidene fluoride) (PVDF)/montmorillonite (MMT) composite with different MMT contents were prepared by solutions-casting method. The effects of MMT on crystalline structure, morphology, dielectric property, piezoelectric property and phase transformation mechanism were studied. The results showed that acted as effective nucleation agents, the orientation of MMT were almost parallel to the surface of the film. The beta phase in the PVDF matrix was increased and the alpha phase was decreased. Relative dielectric constant and loss of the composite were increased with the increasing of MMT. The d _(33) was also increased with MMT, which reached a maximum (5.8pC/N) with 2.0 wt % MMT. The mechanisms of changes in phase transformation and piezoelectric property were proposed based on experiment results.
机译：采用溶液浇铸法制备了不同MMT含量的聚偏二氟乙烯（PVDF）/蒙脱土（MMT）复合材料。研究了MMT对晶体结构，形貌，介电性能，压电性能和相变机理的影响。结果表明，作为有效的成核剂，MMT的取向几乎平行于膜的表面。 PVDF基质中的β相增加，而α相减少。复合材料的相对介电常数和损耗随着MMT的增加而增加。 MM的d_（33）也增加，MMT为2.0 wt％时达到最大值（5.8pC / N）。根据实验结果，提出了相变和压电性能变化的机理。

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