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毕业论文网 > 开题报告 > 机械机电类 > 机械工程及自动化 > 正文

可编程温度响应智能水凝胶制动器的设计与制备开题报告

 2020-04-10 02:04  

1. 研究目的与意义(文献综述)

1.1 目的及意义

水凝胶是一种经适度交联而具有三维网络的、亲水但不溶于水的功能高分子材料[1]。智能水凝胶[2-4],又称刺激响应水凝胶,是一类能对外界环境变化具有响应性的水凝胶,其在外界环境刺激因素(包括温度[5-7]、光[8-10]、电磁场[11-13]和溶剂[14; 15]等)影响下,能产生有效响应,使自身的性质(如相态、形状、力学性能[16]等)随之发生变化,如图1(a)、(b)、(c)所示为智能响应性水凝胶实现跨结构尺度变化。

近年来,基于响应性水凝胶材料的各种功能性器件在智能微机械[17-19]、软体机器人[20-22]及生物医学等领域广泛应用。将刺激响应性水凝胶材料同惰性材料相结合,控制不同材料按照特定的图案进行排布,在外界环境刺激下,水凝胶材料会响应环境刺激溶胀或收缩,而惰性材料保持不变,这种复合结构就能够按照设定的图案进行响应性形变。按照这一思路,各种水凝胶自折叠致动器结构[23-25]、折纸结构[26-28]被不断报道,如图2(a)、(b)所示为响应性水凝胶致动器的应用。

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2. 研究的基本内容与方案

2.1 研究(设计)的基本内容

1)根据文献调研响应性水凝胶的研究现状,详细了解响应性水凝胶的工作原理和应用形式,对掺杂纳米材料和多响应机制深入理解。

2)激光修饰衬底薄膜工艺的研究。通过激光修饰衬底材料将其制作为所需要的形状。激光剪裁工艺需要考虑薄膜的厚度、物理性质,以及对热量的吸收程度,为之相关的是激光参数,包括激光波长、重复频率、激光功率和脉冲宽度。

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3. 研究计划与安排

第1-2周:完成文献调研;

第3周:完成外文翻译;

第4周:完成开题报告;

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4. 参考文献(12篇以上)

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