Treeing Deterioration Characteristics in Cross-linked Polyethylene and Epoxy Resin Composite Materials

1997 ◽  
Vol 36 (Part 1, No. 7A) ◽  
pp. 4392-4396
Author(s):  
Changmin Yuan ◽  
Noboru Yoshimura ◽  
Jangseob Lim ◽  
Hiroyuki Miyata ◽  
Toshio Niwa
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Epoxy Resin Composite ◽  
Deterioration Characteristics

Effect of Backing Materials on the Performance of Cement-Based Piezoelectric Ultrasonic Sensors

2013 ◽  
Vol 351-352 ◽  
pp. 1273-1277
Author(s):  
Xin Chun Xie ◽  
Mi Mi Li ◽  
Dong Yu Xu ◽  
Peng Kun Hou ◽  
Shi Feng Huang
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Metal Powder ◽  
Resin Composite ◽  
Wave Number ◽  
Frequency Bandwidth ◽  
Epoxy Resin Composite ◽  
Longitudinal Resolution ◽  
Echo Pulse ◽  
Peak Value

In order to increase the sensitivity, frequency bandwidth and longitudinal resolution of the 1-3 cement-based piezoelectric ultrasonic sensor, different metal powder/epoxy resin composite materials were used to make backing layer, and the performances of sensors were evaluated and compared. The results indicated that the increase of the sensitivity and the frequency bandwidth, as well as a decrease of the pulse wave number can be observed when the backing materials of metal powder/epoxy resin composite materials were added to the sensor. A 42%-increase of the maximum peak-to-peak value of the echo pulse response, a 52%-reduction of the ring down time and a 200%-increase of the bandwidth can be achieved by using the backing material.

Preparation and Characterization of Epoxy Resin Composite Modified by Flexible Polyurethane Resin

2014 ◽  
Vol 904 ◽  
pp. 170-172 ◽  
Author(s):  
Rong Cheng ◽  
Cheng Zhang ◽  
Jing Wang
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Performance Test ◽  
Mechanical Performance ◽  
Resin Composite ◽  
Mass Ratio ◽  
Scanning Calorimetry ◽  
Epoxy Resin Composite ◽  
Amine Curing ◽  
Modified Epoxy

In this paper, under the effect of MD1041 cashew oil modified phenolic amine curing agent for epoxy resin, it successfully prepared polyurethane flexible resin modified epoxy resin composite materials by using polyurethane modified epoxy resin reinforced flexible resin. Modified composite material of the new preparation is characteristed by the method of the mechanical performance test, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC). The results show that the flexible resin has a strong effect on the toughness of modified epoxy resin composite materials. When the mass ratio of the flexible resin account for 5.9%,comprehensive mechanical properties of the modified composites is at the premium; when the mass ratio of flexible resin account for 3.1%, the thermal stability of the epoxy resin modified with flexible resin is at the best.

Studies on the Thermal Conductivity of Al2O3/Epoxy Resin Composite Materials

2012 ◽  
Vol 535-537 ◽  
pp. 235-238 ◽  
Author(s):  
Xiao Hu Wan ◽  
Li Ge Wang ◽  
Bin Zuo ◽  
En Ze Wang ◽  
Guang Zhi Zhu
Keyword(s):  
Thermal Conductivity ◽  
Particle Size ◽  
Composite Materials ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Pure Epoxy ◽  
Mean Particle Size ◽  
Epoxy Resin Composite

Al2O3/epoxy resin composite materials were prepared with alumina as filler in this paper, and the effects of particle size and added quantity of Al2O3 powers on the thermal conductivity of the composites have been investigated. The results show that, thermal conductivity of the composites increases with the increase of the added quantity of Al2O3 powders, and suitable particle size of alumina filler could help to form heat conductive chain which can improve the thermal conductivity of the composites effectively. The thermal conductivity could reach 0.48 W/(m•K), which is five times than that of pure epoxy resin, when the amount of alumina powders is 60% and its mean particle size is 100µm.

Study on the Compatibilizing Effect of Janus Particles on Liquid Isoprene Rubber/Epoxy Resin Composite Materials

2017 ◽  
Vol 56 (47) ◽  
pp. 14060-14068 ◽  
Author(s):  
Wenqin Xu ◽  
Jiawen Chen ◽  
Shuning Chen ◽  
Qinhui Chen ◽  
Jinhuo Lin ◽  
...  
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Janus Particles ◽  
Epoxy Resin Composite ◽  
Compatibilizing Effect ◽  
Isoprene Rubber

scholarly journals Reinforced Concrete Structures Containing Chopped Carbon Fibers with Polymer Composite Materials

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3812
Author(s):  
George Soupionis ◽  
Loukas Zoumpoulakis
Keyword(s):  
Compressive Strength ◽  
Composite Materials ◽  
Epoxy Resin ◽  
Carbon Fibers ◽  
Vacuum Chamber ◽  
Resin Composite ◽  
Aramid Fibers ◽  
Epoxy Resin Composite ◽  
Strength Tests ◽  
Different Types

In this paper, the reinforcement of concrete combining composite materials with carbon, glass and aramid fibers is discussed. Accordingly, cement specimens reinforced with chopped carbon fibers were manufactured via the retrofitting method and coated using various different types of fabrics (carbon, glass and aramid), and epoxy resin systems were developed and studied using compressive strength tests. In addition, polymeric matrix (epoxy resin) composite materials reinforced with different types of fabric (carbon, glass and aramid (Kevlar® 49)) were manufactured and their shear and bending strengths were measured. Before reinforcing cement specimens, all fabrics (carbon, glass and aramid (Kevlar® 49)) were placed in a vacuum chamber and were processed via pre-impregnation. This specific reinforcing method significantly improved the mechanical properties of cementitious structures with compressive strength values that reached 81 MPa. In a similar way, the bending and shear strengths of the materials under study were measured at 405 MPa and 33 MPa, respectively.

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