Thermal-Mechanical Properties of Polyurethane-Clay Shape Memory Polymer Nanocomposites

Xu, Ben Bin; Fu, Yong Qing; Huang, Wei; Pei, Yu; Chen, Zhen Guo; Hosson, J.Th.M. De; Kraft, Arno; Reuben, Robert Lewis

doi:10.3390/polym2020031

Cited by 40 publications

(28 citation statements)

References 28 publications

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“…What is more, chemical components like isocyanates, polyols, and chain extenders (it is symmetric and presents reactive groups), used to obtain polyurethane materials, may introduce specific interactions between the segments, which determine the thermal and mechanical behavior [35]. Properties of polyurethane elastomers can be also modified during processing by creating polymer nanocomposites [21,36,37], where the polyurethane material acts as a matrix for dispersed nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Strankowski

2018

International Journal of Polymer Science

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This study describes the development of a new class of high-performance polyurethane elastomer nanocomposites containing reduced graphene oxide (RGO) or graphene nanoplatelets (GNP). Two types of polyurethane elastomers with different contents of hard segments (HS) were used as a polymer matrix. The developed nanocomposites were characterized by thermal analysis (DSC, TG), dynamic mechanical testing (DMA), hardness testing, mechanical properties, rheology, FTIR spectroscopy, XRD, and microscopy investigation (TEM, SEM). Morphological investigation confirmed better compatibility of RGO with the polyurethane (PU) matrix compared to GNP. Both applied nanofillers influenced melting and crystallization of the PU matrix. The nonlinear viscoelastic behavior of the nanocomposites (Payne effect) was studied, and the results were compared with theoretical predictions.

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Section: Introductionmentioning

confidence: 99%

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Strankowski

2018

International Journal of Polymer Science

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Section: Physical Treatmentmentioning

confidence: 99%

Fiber Surface/Interfacial Engineering on Wearable Electronics

Xiao

et al. 2021

Small

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Surface/interfacial engineering is an essential technique to explore the fiber materials properties and fulfil new functionalities. An extensive scope of current physical and chemical treating methods is reviewed here together with a variety of real‐world applications. Moreover, a new surface/interface engineering approach is also introduced: self‐assembly via π–π stacking, which has great potential for the surface modification of fiber materials due to its nondestructive working principle. A new fiber family member, metal‐oxide framework (MOF) fiber shows promising candidacy for fiber based wearable electronics. The understanding of surface/interfacial engineering techniques on fiber materials is advanced here and it is expected to guide the rational design of future fiber based wearable electronics.

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“…The shape recovery testing of VGCFs/PDMS-SMEP composites is performed at 80°С (Fig. 3a), benefited from the excellent shape memory property, the sample can be recovered from a large bending deformation after being endowed with a temporary shape under thermal stimuli [25]. Furthermore, the shape fixity and recovery ratios of the sample are also calculated as the following equations [26]:…”

Section: Shape Memory Effects Of Vgcf/pdms-smep Compositesmentioning

confidence: 99%

A broadband and tunable microwave absorption technology enabled by VGCFs/PDMS-EP shape memory composites

Zhu

Liu

et al. 2020

Composite Structures

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A facile method for fabricating intelligent microwave absorber of vapor grown carbon fibers/Polydimethylsiloxaneepoxy resin shape memory composites (VGCFs/PDMS-SMEP) composites was proposed to deliver intelligently tunable and broadband microwave absorption performance. The maximal absorption intensity was regulated by varying the deformation of the composites driven by the superior shape memory property of SMEP, where practical the minimum reflection loss (RLmin) reaches -55.7 dB at 16.0 GHz with the thickness of 2.0 mm. The effective absorption bandwidth (EAB) reached 9.8 GHz, which covered the whole applied frequency range (8.2-18.0 GHz). The intelligent microwave absorption performance of the sample was attributed to robust conductive loss and dielectric loss enhanced by the dipole relaxations and multi-reflections. Thus, VGCFs/PDMS-SMEP composites serves as the key that really opens up opportunity for the application as flexible, shape memory and tunable high performance broadband microwave absorption absorber in frontiers such as wearable electronic devices, chips protection, stealth technology and information security.

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Thermal-Mechanical Properties of Polyurethane-Clay Shape Memory Polymer Nanocomposites

Cited by 40 publications

References 28 publications

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Fiber Surface/Interfacial Engineering on Wearable Electronics

A broadband and tunable microwave absorption technology enabled by VGCFs/PDMS-EP shape memory composites

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