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.

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.

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.

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

Simulation of Electrical and Thermal Behavior of Poly(propylene) / Carbon Filler Conductive Polymer Composites

2005 ◽  
Vol 222 (1) ◽  
pp. 187-194 ◽  
Author(s):  
Jean Fran�ois Feller ◽  
Patrick Glouannec ◽  
Patrick Salagnac ◽  
Guillaume Droval ◽  
Philippe Chauvelon
Keyword(s):  
Thermal Behavior ◽  
Polymer Composites ◽  
Conductive Polymer ◽  
Carbon Filler ◽  
Conductive Polymer Composites ◽  
Poly Propylene ◽  
Propylene Carbon

scholarly journals Pyroresistivity in conductive polymer composites: a perspective on recent advances and new applications

2018 ◽  
Vol 68 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Yi Liu ◽  
Han Zhang ◽  
Harshit Porwal ◽  
James JC Busfield ◽  
Ton Peijs ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Conductive Polymer ◽  
Conductive Polymer Composites ◽  
Recent Advances ◽  
New Applications

Facile synthesis of silver-decorated reduced graphene oxide as a hybrid filler material for electrically conductive polymer composites

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15070-15076 ◽  
Author(s):  
Linxiang He ◽  
Sie Chin Tjong
Keyword(s):  
Graphene Oxide ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Graphite Oxide ◽  
Conductive Polymer ◽  
Facile Synthesis ◽  
Hybrid Filler ◽  
Electrically Conductive ◽  
Conductive Polymer Composites ◽  
Reduced Graphene

Nano silver-decorated reduced graphene oxide (Ag–RGO) sheets were synthesized by simply dissolving graphite oxide and silver nitrate inN,N-dimethylformamide and keeping the suspension at 90 °C for 12 h.

Sign in / Sign up

Export Citation Format

Share Document