Preparing CNT/UHMWPE Composite and it’s Electrical Property Study

2012 ◽  
Vol 454 ◽  
pp. 67-71
Author(s):  
Xiang Yang Hao ◽  
Xiao Ying Hua ◽  
Jian Lu ◽  
Guo Sheng Gai ◽  
Xiang Ming Kong
Keyword(s):  
Polymer Composites ◽  
Conductive Polymer ◽  
Thermionic Emission ◽  
Conductive Filler ◽  
Volume Resistivity ◽  
Composite Particles ◽  
Room Temperature Resistivity ◽  
Conductive Polymer Composites ◽  
Temperature Resistivity ◽  
Uhmwpe Composite

Composite particles with ultra-high molecular polyethylene (UHMWPE) core and carbon nanotube (CNT) shell were produced by an impact coating process, and molded into conductive polymer composites. Morphology of these composite particles was observed and the electrical behavior of these molded composites was measured. UHMWPE particles were very well coated by CNT, and conductive networks of CNT were formed after molding. These conductive polymer composites with low loadings of conductive filler exhibit lower room-temperature resistivity, and volume resistivity decreases with temperature on the whole. This is because of the CNT distribution is uniform in a macroscopic view but is oriented in a mesoscopic view. Thermionic emission of CNT is strong in polymer composites produced by this process. A related mechanism is discussed.

Preparing ACB/UHMWPE Composite by PCS Process and its Electric Resistance-Temperature Behavior

2013 ◽  
Vol 826 ◽  
pp. 223-227
Author(s):  
Xiang Yang Hao ◽  
Xiao Ying Hua ◽  
Guo Sheng Gai ◽  
Jian Lu
Keyword(s):  
Polymer Composites ◽  
Composite System ◽  
Conductive Polymer ◽  
Composite Particles ◽  
Electric Resistance ◽  
Electrical Behavior ◽  
Particle Composite ◽  
Conductive Polymer Composites ◽  
Behavior Study ◽  
Uhmwpe Composite

Composite particles with ultra-high molecular polyethylene (UHMWPE) matrix core and acetylene black (ACB) shell were produced by particle composite system (PCS), and molded into conductive polymer composites. Morphology of these composite particles was investigated by SEM. Matrix particles were coated by ACB nanoparticles very well. Conductive networks of ACB in polymer composites were seen by SEM. The results of electrical behavior study show that the polymer composites exhibit low percolation threshold and its electric conductivity is less affected by temperature due to unusual ACB distribution. Related mechanism is discussed.

Preparation of Conductive Composite Particles by Impact Coating Process

2007 ◽  
Vol 336-338 ◽  
pp. 2044-2046 ◽  
Author(s):  
Xiang Yang Hao ◽  
Guo Sheng Gai ◽  
Yu Fen Yang ◽  
Yi He Zhang ◽  
Ce Wen Nan
Keyword(s):  
Polymer Composites ◽  
Composite System ◽  
Conductive Polymer ◽  
Composite Particles ◽  
Coating Process ◽  
Molding Process ◽  
Dry Coating ◽  
Particle Composite ◽  
Conductive Polymer Composites ◽  
Polyethylene Particles

PCS (particle composite system) is a kind of dry coating equipment. The PCS process involves encapsulating UHMWPE (ultra-high molecular polyethylene) particles with a layer of SCB (super conductive carbon black) or ACB (acetylene black), and subsequently compacting these CB-encapsulated UHMWPE powders by compression molding to manufacture conductive polymer composites respectively. Morphologies of these composite particles were investigated by SEM. By SEM, we can see the conductive networks of CB in polymer composites. Coating-molding process with PCS can be used to form network structure in ceramics and metal as well.

scholarly journals Conductive Polymer Composites from Renewable Resources: An Overview of Preparation, Properties, and Applications

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 187 ◽  
Author(s):  
Yao Huang ◽  
Semen Kormakov ◽  
Xiaoxiang He ◽  
Xiaolong Gao ◽  
Xiuting Zheng ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Renewable Resources ◽  
Industrial Development ◽  
Light Emitting Diode ◽  
Conductive Polymer ◽  
Conductive Filler ◽  
Natural Polymers ◽  
Conductive Polymer Composites ◽  
Potential Applications ◽  
Conductive Properties

This article reviews recent advances in conductive polymer composites from renewable resources, and introduces a number of potential applications for this material class. In order to overcome disadvantages such as poor mechanical properties of polymers from renewable resources, and give renewable polymer composites better electrical and thermal conductive properties, various filling contents and matrix polymers have been developed over the last decade. These natural or reusable filling contents, polymers, and their composites are expected to greatly reduce the tremendous pressure of industrial development on the natural environment while offering acceptable conductive properties. The unique characteristics, such as electrical/thermal conductivity, mechanical strength, biodegradability and recyclability of renewable conductive polymer composites has enabled them to be implemented in many novel and exciting applications including chemical sensors, light-emitting diode, batteries, fuel cells, heat exchangers, biosensors etc. In this article, the progress of conductive composites from natural or reusable filling contents and polymer matrices, including (1) natural polymers, such as starch and cellulose, (2) conductive filler, and (3) preparation approaches, are described, with an emphasis on potential applications of these bio-based conductive polymer composites. Moreover, several commonly-used and innovative methods for the preparation of conductive polymer composites are also introduced and compared systematically.

Conductive Polymer Composites from Polylactic Acid/Natural Rubber Filled with Carbon Black

2015 ◽  
Vol 1115 ◽  
pp. 253-257 ◽  
Author(s):  
Yose Fachmi Buys ◽  
Nor Afiza Syafina Lokman
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Polymer Composites ◽  
Polylactic Acid ◽  
Conductive Polymer ◽  
Conductive Filler ◽  
Electrically Conductive ◽  
Conductive Polymer Composites ◽  
The Impact ◽  
Better Than

In order to develop environmentally friendly conductive polymer composites, polylactic acid (PLA) was melt blended with natural rubber (NR), with addition of carbon black (CB) as the conductive filler. It was found that the PLA/NR blends were immiscible, and the sea-island and co-continuous morphological structures were observed at PLA/NR with ratio of 80/20 vol% and 60/40 vol% respectively. Addition of CB to 60/40 PLA/NR matrix, brought the composites to become electrically conductive at CB content of 2 phr. It was also found that the impact strength of PLA/NR/CB composite is better than that of the neat PLA.

scholarly journals The Influence of Compounding Parameters on the Electrical Conductivity of LDPE/Cu Conductive Polymer Composites (CPCs)

2021 ◽  
Vol 2080 (1) ◽  
pp. 012008
Author(s):  
Farah Badrul ◽  
Khairul Anwar Abdul Halim ◽  
MohdArif Anuar Mohd Salleh ◽  
Azlin Fazlina Osman ◽  
Nor Asiah Muhamad ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Polymer Composites ◽  
Low Cost ◽  
Conductive Polymer ◽  
Conductive Filler ◽  
Filler Loading ◽  
Electrically Conductive ◽  
Statistical Software ◽  
Conductive Polymer Composites ◽  
The Matrix

Abstract Low-linear density (LDPE) and copper (Cu) were used as main polymer matrix and conductive filler in order to produce electrically conductive polymer composites (CPC). The selection of the matrix and conductive filler were based on their due to its excellence properties, resistance to corrosion, low cost and electrically conductive. This research works is aimed to establish the effect of compounding parameter on the electrical conductivity of LDPE/Cu composites utilising the design of experiments (DOE). The CPCs was compounded using an internal mixer where all formulations were designed by statistical software. The scanning electron micrograph (SEM) revealed that the Cu conductive filler had a flake-like shape, and the electrical conductivity was found to be increased with increasing filler loading as measured using the four-point probe technique. The conductivity data obtained were then analysed by using the statistical software to establish the relationship between the compounding parameters and electrical conductivity where it was found based that the compounding parameters have had an effect on the conductivity of the CPC.

Tunable temperature-resistivity behaviors of carbon black/polyamide 6 /high-density polyethylene composites with conductive electrospun PA6 fibrous network

2018 ◽  
Vol 53 (14) ◽  
pp. 1897-1906 ◽  
Author(s):  
Yingying Qu ◽  
Ping Xu ◽  
Hu Liu ◽  
Qianming Li ◽  
Ning Wang ◽  
...  
Keyword(s):  
Temperature Coefficient ◽  
Polymer Composites ◽  
High Density Polyethylene ◽  
Conductive Polymer ◽  
Polyamide 6 ◽  
Positive Temperature Coefficient ◽  
High Density ◽  
Positive Temperature ◽  
Conductive Polymer Composites ◽  
Temperature Resistivity

Temperature-resistivity behaviors of carbon black/polyamide 6/high-density polyethylene conductive polymer composites containing electrospun polyamide 6 fibrous network were studied systematically. The positive temperature coefficient intensity of the conductive polymer composites increased firstly and then reduced gradually with increasing heating rate, showing a heating rate-dependent positive temperature coefficient intensity. The fascinating phenomenon was ascribed to the microstructure change of conductive network induced by the volume expansion and the thermal residual stress generated in the composites. During the heating-cooling runs at different top testing temperature of 140, 150 and 180℃, the room-temperature resistivity of sample was observed to be 30, 2.3 and 1.6 orders of magnitude higher than the initial value after one heating-cooling run, respectively. The thermal treatment time above the melting temperature of high-density polyethylene and the viscosity variation of the conductive polymer composites were responsible for the increased resistivity. This study provides a guideline for fabricating conductive polymer composites with tuning positive temperature coefficient property.

scholarly journals Miniaturization effect of electroosmotic self-propulsive microswimmer powered by biofuel cell

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Toshiro Yamanaka ◽  
Fumihito Arai
Keyword(s):  
Theoretical Model ◽  
Femtosecond Laser ◽  
Polymer Composites ◽  
Open Circuit Potential ◽  
Vascular System ◽  
Conductive Polymer ◽  
Open Circuit ◽  
Biofuel Cell ◽  
Remarkable Feature ◽  
Conductive Polymer Composites

AbstractFor future medical microrobotics, we have proposed the concept of the electroosmotic self-propulsive microswimmer powered by biofuel cell. According to the derived theoretical model, its self-propulsion velocity is inversely proportional to the length of the microswimmer, while it is proportional to the open circuit potential generated by the biofuel cell which does not depend on its size. Therefore, under conditions where those mechanisms work, it can be expected that the smaller its microswimmer size, the faster its self-propulsion velocity. Because of its remarkable feature, this concept is considered to be suitable as propulsion mechanisms for future medical microrobots to move inside the human body through the vascular system, including capillaries. We have already proved the mechanisms by observing the several 10 μm/s velocity of 100 μm prototypes fabricated by the optical photolithography using several photomasks and alignment steps. However, the standard photolithography was not suitable for further miniaturization of prototypes due to its insufficient resolution. In this research, we adopted femtosecond-laser 3D microlithography for multi-materials composing of the conductive polymer composites and nonconductive polymer composite and succeeded in fabricating 10 μm prototypes. Then we demonstrated more than 100 μm/s velocity of the prototype experimentally and proved its validity of the smaller and faster feature.

A delay of percolation time in carbon-black-filled conductive polymer composites

2000 ◽  
Vol 88 (3) ◽  
pp. 1480-1487 ◽  
Author(s):  
Guozhang Wu ◽  
Shigeo Asai ◽  
Cheng Zhang ◽  
Tadashi Miura ◽  
Masao Sumita
Keyword(s):  
Carbon Black ◽  
Polymer Composites ◽  
Conductive Polymer ◽  
Conductive Polymer Composites
Sign in / Sign up

Export Citation Format

Share Document