The Research of the Effect of Single-Walled Carbon Nanotubes on the Properties of Epichlorohydrin Rubber

2019 ◽  
Vol 945 ◽  
pp. 428-432
Author(s):  
E.N. Timofeeva ◽  
Natalia N. Petrova ◽  
K.N. Nikolaeva ◽  
E.S. Kuzmina

The development of frost-resistant elastomeric materials with high performance characteristics remains one of the topical issues. Solving this issue will significantly improve the reliability of machines and mechanisms operating under extremely low temperatures. The influence of multi-walled carbon nanotubes on the performance properties of epichlorohydrin rubber was investigated. This rubber of unique frost resistance has low glass transition temperature (Tg = -60 °C).

2015 ◽  
Vol 749 ◽  
pp. 182-185 ◽  
Author(s):  
Ching Wen Lou ◽  
Zheng Ian Lin ◽  
Chien Lin Huang ◽  
Wen Cheng Chen ◽  
Chih Kuang Chen ◽  
...  

This study presents polyvinyl alcohol (PVA)/multi-walled carbon nanotubes (MWCNTs) composites, and examines the influence of the content of MWCNTs on the tensile and thermal properties of the PVA matrices. The test results show that an increase of 1.5 wt% of MWCNTs results in greater tensile properties of the PVA matrices, while decreasing their toughness. The interaction between MWCNTs and PVA pertains to the thermal properties of PVA matrices, which is exemplified by a significant increase in their glass transition temperature (Tg).


2007 ◽  
Vol 334-335 ◽  
pp. 713-716 ◽  
Author(s):  
Meng Kao Yeh ◽  
Nyan Hwa Tai ◽  
Yan Jyun Lin

The multi-walled carbon nanotubes (MWNTs) and carbon fibers (CFs) were added to the phenolic resin to fabricate MWNTs/phenolic, MWNTs/CFs/phenolic nanocomposites and CFs/phenolic composites by hot press method. The differential scanning calorimetry (DSC) test was performed for the above-mentioned three kinds of composites. The valley points on the slope of endothermic responses correspond to the glass transition temperatures of the composites. The MWNTs/phenolic nanocomposites had the lowest glass transition temperature among the three kinds of composites discussed, which indicated a better thermal conductivity property of MWNTs. Phenolic-based composites reinforced by different weight percentages of MWNTs and CFs were also investigated. The tensile failure morphologies of nanocomposite specimens were examined using a scanning electron microscope to evaluate the possible effects on the glass transition temperature of nanocomposites..


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jae-Won Lee ◽  
Joon Young Cho ◽  
Mi Jeong Kim ◽  
Jung Hoon Kim ◽  
Jong Hwan Park ◽  
...  

AbstractSoft electronic devices that are bendable and stretchable require stretchable electric or electronic components. Nanostructured conducting materials or soft conducting polymers are one of the most promising fillers to achieve high performance and durability. Here, we report silver nanoparticles (AgNPs) embedded with single-walled carbon nanotubes (SWCNTs) synthesized in aqueous solutions at room temperature, using NaBH4 as a reducing agent in the presence of highly oxidized SWCNTs as efficient nucleation agents. Elastic composite films composed of the AgNPs-embedded SWCNTs, Ag flake, and polydimethylsiloxane are irradiated with radiation from a Xenon flash lamp within a time interval of one second for efficient sintering of conductive fillers. Under high irradiation energy, the stretchable electrodes are created with a maximum conductivity of 4,907 S cm−1 and a highly stretchable stability of over 10,000 cycles under a 20% strain. Moreover, under a low irradiation energy, strain sensors with a gauge factor of 76 under a 20% strain and 5.4 under a 5% strain are fabricated. For practical demonstration, the fabricated stretchable electrode and strain sensor are attached to a human finger for detecting the motions of the finger.


2013 ◽  
Vol 652-654 ◽  
pp. 151-154
Author(s):  
Ting Kai Zhao ◽  
Xing Zhao ◽  
Jin Yan ◽  
Li Du ◽  
Tie Hu Li

With the technological progress in the synthesis of multi-walled carbon nanotubes and single-walled carbon nanotubes, more attention was attracted to the synthesis of carbon nanotubes with diameter distribution, ideal length, different chirality and certain orientation. In recent decade, all these factors have been investigated and a number of progresses have been made for the application of carbon nanotubes. The latest researches on the growth of diameter-controlled single-walled carbon nanotubes are reviewed and discussed. The existing problems and challenges of the synthesis processes have been addressed in the future directions.


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