Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites
Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites
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DOI：
10.1111/jace.17009
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发表时间：
2020-05
影响因子：
3.9
通讯作者：
A. Ndayishimiye;Zane Grady;K. Tsuji;Ke Wang;S. Bang;C. Randall
中科院分区：
文献类型：
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作者：
A. Ndayishimiye;Zane Grady;K. Tsuji;Ke Wang;S. Bang;C. Randall
这项研究报告了通过冷烧结工艺制造出第一种陶瓷热固性聚合物复合材料，具有高陶瓷体积分数（v/v > 95%）。将 (1 -x) ZnO -x 聚二甲基硅氧烷 (PDMS) 复合材料（0.00 ≤x≤ 0.05）在 250°C、320 MPa 下冷烧结 60 分钟。在半自动压机的帮助下进行的原位致密化研究表明，驱动材料致密化的机制随着聚合物含量的变化而变化。 (1 −x) ZnO −xPDMS 复合材料 (0.00 ≤ x ≤ 0.05) 的相对密度高于 90%。复合材料的阻抗谱可以深入了解烧结 ZnO 块体内的陶瓷-聚合物界面，并表明长程传导受 ZnO-PDMS 界面特性（x= 0.03 和 x= 0.05）的控制。该研究还强调了这种以陶瓷为主的陶瓷聚合物复合材料的复杂性和机遇。
This study reports the fabrication of the first ceramics‐thermosetting polymer composites by the cold sintering process, for high ceramic volume fractions (v/v >95%). The (1 −x) ZnO −xpolydimethylsiloxane (PDMS) composites, with 0.00 ≤x≤ 0.05, were cold sintered at 250°C, 320 MPa for 60 minutes. In situ densification studies conducted with the help of a semi‐automated press revealed that the mechanisms driving the densification of the material changes with the polymer content. Relative densities of the (1 −x) ZnO −xPDMS composites (0.00 ≤x≤ 0.05) were above 90%. Impedance spectroscopy of the composites yields insight into the ceramic‐polymer interfaces within the sintered ZnO bulk and suggests long‐range conduction governed by ZnO‐PDMS interface properties forx= 0.03 andx= 0.05. The study also emphasizes on the complexities and opportunities of such ceramic‐dominated ceramic‐polymer composites.