Thermal, mechanical properties and shape memory performance of a novel phthalide-containing epoxy resins

Polymer ◽  
2018 ◽  
Vol 140 ◽  
pp. 326-333 ◽  
Author(s):  
Xuhai Xiong ◽  
Lu Zhou ◽  
Rong Ren ◽  
Xinghua Ma ◽  
Ping Chen
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Epoxy Resins ◽  
Memory Performance ◽  
Thermal Mechanical Properties

The effect of phthalide cardo structure on the shape memory performance of high-temperature resistant epoxy resins

2018 ◽  
Vol 5 (11) ◽  
pp. 115702 ◽  
Author(s):  
Rong Ren ◽  
Zhaopeng Zhang ◽  
Xuhai Xiong ◽  
Lu Zhou ◽  
Xichao Guo ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory ◽  
Epoxy Resins ◽  
Memory Performance

One-pot synthesis of bimodal silica nanospheres and their effects on the rheological and thermal–mechanical properties of silica–epoxy composites

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50073-50081 ◽  
Author(s):  
Qian Guo ◽  
Pengli Zhu ◽  
Gang Li ◽  
Liang Huang ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resins ◽  
Epoxy Composites ◽  
Silica Nanospheres ◽  
One Pot ◽  
One Pot Synthesis ◽  
Thermal Mechanical Properties ◽  
Modify Epoxy

Bimodal silica nanospheres were prepared in one pot and were used as reinforcement fillers to modify epoxy resins.

scholarly journals Development of Trans-1,4-Polyisoprene Shape-Memory Polymer Composites Reinforced with Carbon Nanotubes Modified by Polydopamine

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 110
Author(s):  
Chuang Zhang ◽  
Long Li ◽  
Yuanhang Xin ◽  
Jiaqi You ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Shape Memory ◽  
Polymer Composites ◽  
Photoelectron Spectroscopy ◽  
Memory Performance ◽  
Shape Memory Polymer ◽  
Structure And Properties ◽  
X Ray

In this study, which was inspired by mussel-biomimetic bonding research, carbon nanotubes (CNTs) were interfacially modified with polydopamine (PDA) to prepare a novel nano-filler (CNTs@PDA). The structure and properties of the CNTs@PDA were studied using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The CNTs and the CNTs@PDA were used as nanofillers and melt-blended into trans-1,4 polyisoprene (TPI) to create shape-memory polymer composites. The thermal stability, mechanical properties, and shape-memory properties of the TPI/CNTs and TPI/CNTs@PDA composites were systematically studied. The results demonstrate that these modifications enhanced the interfacial interaction, thermal stability, and mechanical properties of TPI/CNTs@PDA composites while maintaining shape-memory performance.

scholarly journals Facile Fabrication of Eucommia Rubber Composites with High Shape Memory Performance

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3479
Author(s):  
Lin Xia ◽  
Jiafeng Meng ◽  
Yuan Ma ◽  
Ping Zhao
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Memory Performance ◽  
Analytical Techniques ◽  
Cross Linking ◽  
Rubber Composites ◽  
Restoring Force ◽  
Shape Memory Composites ◽  
Facile Fabrication ◽  
Properties Of Materials

We processed a series of shape memory Eucommia rubber (ER) composites with both carbon–carbon and ionic cross-linking networks via a chemical cross-linking method. The influence of the carbon–carbon cross-linking and ion cross-linking degree of ER composites on curing, mechanical, thermal, and shape memory properties were studied by DSC, DMA, and other analytical techniques. Dicumyl peroxide (DCP) and zinc dimethacrylate (ZDMA) played a key role in preparing ER composites with a double cross-linking structure, where DCP initiated polymerization of ZDMA, and grafted ZDMA onto polymer molecular chains and cross-linked rubber molecular chains. Meanwhile, ZDMA combined with rubber macromolecules to build ionic cross-linking bonds in composites under the action of DCP and reinforced the ER composites. The result showed that the coexistence of these two cross-linking networks provide a sufficient restoring force for deformation of shape memory composites. The addition of ZDMA not only improved the mechanical properties of materials, but also significantly enhanced shape memory performance of composites. In particular, Eucommia rubber composites exhibited outstanding mechanical properties and shape memory performance when DCP content was 0.2 phr.

Study on Shape-Memory Mechanism and Properties of NR/TPI Blends

2013 ◽  
Vol 467 ◽  
pp. 146-151 ◽  
Author(s):  
Guang Yi Lin ◽  
Shu Ming Liu ◽  
Fang Chen Dong
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Memory Performance ◽  
Dynamic Mechanical Properties ◽  
Memory Mechanism ◽  
Static Mechanical ◽  
Addition Level ◽  
Shape Fixity ◽  
Static Mechanical Properties

Crystalline grains of TPI distribute in NR/TPI blends in the role of physical crosslinking points and make up for deficiencies of the NR/TPI blending system. The flexibility and strength have been enhanced significantly by increasing the the addition level of TPI. The NR/TPI vulcanizates containing 30% of TPI were found to show the recovery rate of 99.4%, while the shape fixity was close to 100%. The study indicated that the recovery rates of NR/TPI vulcanizates depended to a large extent on the addition level of TPI. The influence of the addition level of TPI on the micro-structure of NR/TPI blends was investigated. In addition, the effects of TPI content on static mechanical properties, dynamic mechanical properties, shape-memory performance and cure characteristics of NR/TPI blends were also discussed.

Synthesis and characterization of aromatic-PDMS segmented block copolymers and their shape-memory performance

2019 ◽  
Vol 10 (37) ◽  
pp. 5052-5069 ◽  
Author(s):  
Hongli Xu ◽  
Johan Bijleveld ◽  
Maruti Hedge ◽  
Theo Dingemans
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers ◽  
Shape Memory ◽  
Memory Performance ◽  
Synthesis And Characterization ◽  
Multiblock Copolymers ◽  
Polymeric System

Aromatic-PDMS (AB)n multiblock copolymers: a one-component polymeric system that combines excellent mechanical properties with shape memory capability.

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