نتایج جستجو برای: Shape Memory Polymer

تعداد نتایج: 528215  

Journal: :علوم و تکنولوژی پلیمر 0
سید احمد ابراهیمی مهرداد کوکبی محمدعلی سمسارزاده

0

Arman Mohammadi, Daniel George, Mahdi Baniasadi Mostafa Baghani Nima Roudbarian,

In this paper, the effect of thermomechanical loading on the behavior of deflection-based harvested energies from a shape memory polymer system is experimentally investigated. Samples are created with honeycomb cells from poly-lactic acid using additive manufacturing techniques. The shape memory effect in shape recovery and force recovery paths are studied under thermomechanical tests in bendin...

2017
Samy A. Madbouly Andreas Lendlein

The development of shape-memory polymer composites (SMPCs) enables high recovery stress levels as well as novel functions such as electrical conductivity, magnetism, and biofunctionality. In this review chapter the substantial enhancement in mechanical properties of shape-memory polymers (SMPs) by incorporating small amounts of stiff fillers will be highlighted exemplarily for clay and polyhedr...

2014
Senlong Gu

This paper evaluates the role of minor component polybenzoxazine (PB) on shape-memory properties of polyurethanes (PU) with glassy and crystalline soft segments. The polymer compounds were prepared in two steps. In the first step, benzoxazine, polyurethane pre-polymer, and chain extender butanediol (BD) were mixed into a solution followed by chain-extension of the pre-polymer with BD. In the se...

Journal: :Science and technology of advanced materials 2008
Hisaaki Tobushi Syunichi Hayashi Kazumasa Hoshio Yoshihiro Ejiri

In shape-memory polymers, large strain can be fixed at a low temperature and thereafter recovered at a high temperature. If the shape-memory polymer is held at a high temperature for a long time, the irrecoverable strain can attain a new intermediate shape between the shape under the maximum stress and the primary shape. Irrecoverable strain control can be applied to the fabrication of a shape-...

Journal: :Mechanical Engineering Journal 2016

2009
Seok Kim Metin Sitti Tao Xie Xingcheng Xiao

This work reports thin-film terminated micro-fibrillar adhesives made of adhesive polymers and shape memory polymers as reversible dry adhesives with thermally controllable adhesion. Structurally different adhesives were fabricated by coating a continuous thin layer of an elastomeric adhesive polymer onto either a flat or a fibrillar shape memory polymer surface. Experimental results exhibited ...

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