High Performance of Rutile Titanium Dioxide Whiskers/Epoxy Resin Composites

2016 ◽  
Vol 867 ◽  
pp. 93-97
Author(s):  
Yao Feng ◽  
Zhang Zhao Weng ◽  
Wen Hao Xu ◽  
Zhao Xian Xiong
Keyword(s):  
Dielectric Loss ◽  
Flexural Strength ◽  
Epoxy Resin ◽  
High Performance ◽  
Microwave Dielectric Properties ◽  
Resin Composites ◽  
Low Dielectric ◽  
Microwave Dielectric ◽  
Epoxy Resin Composites ◽  
Rutile Titanium Dioxide

Rutile TiO2 whisker/epoxy resin composites were prepared by hot-pressing process method. The effects of different content of TiO2 whiskers on the microstructure, microwave dielectric properties and flexural strength for TiO2/epoxy resin composites were investigated. Results show that flexural strength increased firstly, which can reach the maximum value (105.53 Mpa), then decreased with the content of TiO2 whisker (v%) increase. Moreover, the dielectric constant and dielectric loss of the TiO2/epoxy resin composites increase with the increased of TiO2 whisker (v%). When the content of TiO2 whisker is 60 v%, the TiO2 whisker/epoxy resin composites exhibit a higher permittivity (εr = 10.74) and relatively low dielectric loss (tanθ= 0.021).

scholarly journals Effects of the molding process on properties of bamboo fiber/epoxy resin composites

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 7416-7427
Author(s):  
Jiangjing Shi ◽  
Yanping Zou ◽  
Wenfu Zhang ◽  
Hong Chen
Keyword(s):  
Epoxy Resin ◽  
High Performance ◽  
Thermomechanical Analysis ◽  
Fiber Composites ◽  
Filament Winding ◽  
Bamboo Fiber ◽  
Advanced Technology ◽  
Resin Composites ◽  
Molding Process ◽  
Epoxy Resin Composites

Filament winding is an advanced technology for fabrication of high-performance composites. Pressure-free fabrication can be achieved for non-planar composites with complicated shapes using resin-immersed twisting fibers. In this study, twisted bamboo fiber (TBF) composites were prepared by a filament winding processing (FWP). Short bamboo fiber (SBF), long bamboo fiber (LBF), and TBF composites were prepared by hot pressing (HP) and resin transfer molding (RTM). The results showed that the bamboo fiber/epoxy resin composites were positively related to the fiber size. The bamboo fiber/epoxy resin composites fabricated by FWP exhibited optimal shear performance, while those generated by RTM exhibited optimized bending performance. Dynamic thermomechanical analysis revealed that composites made by FWP had optimized interfaces. The FWP mechanism of bamboo fiber composites was resin immersion and alignment of TBF; upon resin immersion the TBF were coated by resin and could not enter the internal tubes or parenchyma tissues of the TBF. The TBF was aligned by winding equipment. After heated solidification of the resin, several bubble pores were distributed on both sides of the TBF, whose positions remained static over time. The filament winding processing for bamboo fiber composites enhanced their performance and could lead to the applications in bamboo fibers composites.

Microwave dielectric properties of CaV2O6 ceramics with low dielectric loss

2015 ◽  
Vol 26 (10) ◽  
pp. 7719-7722 ◽  
Author(s):  
Guo-Guang Yao ◽  
Cui-Jin Pei ◽  
Jian-Gang Xu ◽  
Peng Liu ◽  
Jian-Ping Zhou ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Microwave Dielectric Properties ◽  
Low Dielectric ◽  
Microwave Dielectric

scholarly journals Preparation and Testing of PAN Carbon/Epoxy Resin Composites

2017 ◽  
Vol 11 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Brundaban Patro ◽  
D. Shashidhar ◽  
B. Rajeshwer ◽  
Saroj Kumar Padhi
Keyword(s):  
Physical Properties ◽  
Epoxy Resin ◽  
Carbon Fibers ◽  
High Performance ◽  
Testing Machine ◽  
Void Content ◽  
Resin Composites ◽  
Destructive Testing ◽  
Mechanical And Physical Properties ◽  
Epoxy Resin Composites

Background: Due to light weight, high performance and excellent mechanical properties, carbon fibers are considered a key material in the 21st century. These are extensively used in many industries for structural usages, such as aerospace, aeronautical, sporting goods applications, and automotive and medical devices, due to their desirable strength to weight properties. Now, these are globally accepted as a high performance and high-strength material. Most of the carbon fibers are derived from polyacrylonitrile fiber precursor. These materials have the potential for fire hazards caused due to heat, smoke, and electric short circuit. Objective: To prepare polyacrylonitrile carbon and epoxy resin laminates in multilayers by hand-lay-up method and testing by ASTM (American Society for Testing and Materials) standards. Method: Polyacrylonitrile carbon fiber/epoxy resin composites are prepared using the hand-lay-up method. For the non-destructive testing, the ultrasonic type is used. For the destructive testing, a universal testing machine is used to test the tensile test, the flexural test and the inter-laminar shear stress test, as per the ASTM standard. Subsequently, the physical properties, such as the density test and the fiber content, the resin content and the void content tests of the laminate are carried out. Results: The experimental results show that the matrix laminates have good mechanical and physical properties. Conclusion: Preparation and testing of polyacrylonitrile carbon/epoxy resin composites are carried out and the prepared laminates exhibit good mechanical and physical properties. Hence, the laminates can be used in many industrial and commercial applications, as a composite material.

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