Bistable electroactive polymer with sharp rigid-to-rubbery phase transition
Bistable electroactive polymer with sharp rigid-to-rubbery phase transition
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具有急剧的刚性到橡胶相变的双稳态电活性聚合物
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Q. Pei
中科院分区：
文献类型：
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作者：
Yu Qiu;Zhi Ren;Wei Hu;Chao Liu;Q. Pei
双稳态电活性聚合物 (BSEP) 通常表现出跨越相当宽的温度范围的玻璃化转变，并且通常在 70 °C 以上被激活。高驱动温度限制了可穿戴和个人辅助应用的 BSEP。合成了相变聚合物并用作具有较窄的刚性到橡胶转变温度范围的 BSEP。观察到形状记忆效应，固定率和恢复率接近100%。 BSEP 的隔膜执行器可在 50°C 下以高达 70% 的应变进行电驱动，并且在将 BSEP 冷却到转变温度以下后变形形状得以固定。刚性到刚性驱动可以重复至少 10,000 个周期。
Bistable electroactive polymers (BSEP) usually exhibit glass transition that spans a rather broad temperature range and are normally actuated above 70 °C. High actuation temperature limits the BSEP for wearable and personal assistive applications. A phase-changing polymer is synthesized and employed as BSEP having a narrow rigid-to-rubbery transition temperature range. Shape memory effect with both fixation and recovery rate close to 100% was observed. Diaphragm actuators of the BSEP can be electrically actuated at 50 °C up to 70% strain, and the deformed shape was fixed after cooling the BSEP below the transition temperature. The rigid-to-rigid actuation can be repeated for at least 10,000 cycles.