An actuator of two-way behavior by using two kinds of shape memory polymers with different Tgs
An actuator of two-way behavior by using two kinds of shape memory polymers with different Tgs
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DOI：
10.1016/j.precisioneng.2013.01.002
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发表时间：
2013-07-01
影响因子：
3.6
通讯作者：
Sakurai, Kosei
中科院分区：
文献类型：
--
作者：
Imai, Satomitsu;Sakurai, Kosei
提出了一种新的形状记忆聚合物(SMP)驱动器的操作方法，并对其进行了表征。由于形状记忆效应以一种方式工作，所以在传统的SMP执行器中使用了使SMP变形的外力。我们的执行器只使用形状记忆效应来重现特定的行为。我们的操作方法如下。使用了两种不同玻璃化转变温度的开关电源(T-G1和T-G2(T-G1<；T-G2))。在形成与T-G1相关的记忆形状之后，与T-G2相关的记忆形状在T-G2取消先前的记忆形状，即，T-G2的记忆形状被设置为与T-G1的记忆形状相反的形状。这种方法只需要加热和冷却的温度周期来操作执行器，并且这种简单的操作方法适用于小尺寸的执行器。选择了能够定制T(G)S的PU系列开关磁阻电机，通过悬臂梁和膜片两种原型驱动器的实验验证了所提出的工作原理，并测试了它们的特性。(C)2013 Elsevier Inc.保留所有权利。
A novel operating method for shape memory polymer (SMP) actuators has been developed and characterized. Since the shape memory effect works in one way, an external force to deform SMP has been used in conventional SMP actuators. Our actuators use only the shape memory effect to reproduce a specific behavior. Our operating method is as follows. Two kinds of SMPs with different glass transition temperatures (T-g1 and T-g2 (T-g1 < T-g2)) are used. After a memory shape relating to T-g1 is formed, the memory shape relating to T-g2 cancels the previous memory shape at T-g2, i.e., the memory shape of T-g2 is set to the reverse shape of the memory shape of T-g1. This method needs only the temperature cycle of heating and cooling to operate the actuator and this simple operating method is suitable for small size actuators. SMPs of polyurethane series are chosen for being able to tailor the T(g)s. We confirmed that the proposed operating principle functioned experimentally by using two kinds of proto-type actuators of a cantilever beam and a diaphragm and examined the characteristics of them. (C) 2013 Elsevier Inc. All rights reserved.