Nanohydroxyapatite embedded blends of ethylene‐co‐vinyl acetate and millable polyurethane as piezoelectric materials: dielectric, viscoelastic and mechanical features,Polymer International

当前位置： X-MOL 学术 › Polym. Int. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Nanohydroxyapatite embedded blends of ethylene‐co‐vinyl acetate and millable polyurethane as piezoelectric materials: dielectric, viscoelastic and mechanical features
Polymer International ( IF 2.9 ) Pub Date : 2020-06-22 , DOI: 10.1002/pi.6070
V H Shafeeq ₁ , C K Subash ₂ , Soney Varghese ₂ , G Unnikrishnan ₁

Affiliation

We report the piezoelectric, dielectric and dynamic mechanical features of nanohydroxyapatite (nHA) embedded ethylene‐co‐vinyl acetate (EVA)/millable polyurethane (MPU) elastomer blends. The EVA/MPU/nHA systems were prepared by two‐roll milling followed by compression moulding. The piezoelectric features were probed by dynamic contact electrostatic force microscopy (EFM).The neat EVA/MPU blend was not found to exhibit ferroelectric properties. However, upon incorporation of nHA, butterfly loops of EFM amplitude signals as well as complementary hysteresis curves were obtained, confirming the introduction of ferro‐piezoelectric properties. The ferro‐piezoelectric features were found to be improved with an increase in nHA loading which recorded highest signals for 8 parts per hundred parts of rubber (phr) loaded composites. The fabricated devices generated a peak voltage of 4.02 V and 4.89 V respectively with 6 phr and 8 phr nHA loaded composites. Electrical properties such as dielectric constant, volume resistivity and loss factor as well as dynamic mechanical properties were examined. The viscoelastic features of the systems support the reinforcing feature with filler loading. TEM analysis of the composites indicated a uniform distribution of filler particles in the blend matrix, complementing the observed ferro‐piezoelectric, dielectric and dynamic mechanical properties. The simultaneous modulation of piezoelectric and viscoelastic properties is a preferred feature for fast‐responsive dielectric elastomers for their applications in various piezoelectric devices. © 2020 Society of Chemical Industry

中文翻译：

纳米羟基磷灰石嵌入的乙烯-醋酸乙烯酯共聚物和可研磨聚氨酯的共混物作为压电材料：介电，粘弹性和机械特性

我们报告了纳米羟基磷灰石（nHA）嵌入乙烯共聚物的压电，介电和动态力学特性醋酸乙烯酯（EVA）/可铣削聚氨酯（MPU）弹性体混合物。EVA / MPU / nHA系统是通过两辊铣削然后压缩成型制备的。通过动态接触静电力显微镜（EFM）探测压电特征。未发现纯的EVA / MPU共混物具有铁电特性。然而，在掺入nHA后，获得了EFM振幅信号的蝶形环路以及互补的磁滞曲线，这证实了铁电压电特性的引入。发现随着nHA负载的增加，铁压电性能得到改善，nHA负载的最高信号记录为每100份橡胶（phr）复合材料中有8份。所制造的器件在负载了6phr和8phr nHA的复合材料时分别产生了4.02 V和4.89 V的峰值电压。检查了诸如介电常数，体积电阻率和损耗因数的电性能以及动态机械性能。系统的粘弹性特征可通过填充物来支撑增强特征。复合材料的TEM分析表明，填料颗粒在共混基体中均匀分布，补充了所观察到的铁电压电，介电和动态力学性能。压电和粘弹性质的同时调制是快速响应介电弹性体在各种压电设备中的应用的首选功能。©2020化学工业协会系统的粘弹性特征可通过填充物来支撑增强特征。复合材料的TEM分析表明，填料颗粒在共混基体中分布均匀，补充了所观察到的铁电压电，介电和动态力学性能。压电和粘弹性能的同时调制是快速响应介电弹性体在各种压电设备中的应用的首选功能。©2020化学工业协会系统的粘弹性特征可通过填充物来支撑增强特征。复合材料的TEM分析表明，填料颗粒在共混基体中均匀分布，补充了所观察到的铁电压电，介电和动态力学性能。压电和粘弹性能的同时调制是快速响应介电弹性体在各种压电设备中的应用的首选功能。©2020化学工业协会压电和粘弹性能的同时调制是快速响应介电弹性体在各种压电设备中的应用的首选功能。©2020化学工业协会压电和粘弹性能的同时调制是快速响应介电弹性体在各种压电设备中的应用的首选功能。©2020化学工业协会

更新日期：2020-06-22

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11