High Permittivity, Low Loss, and Printable Thermoplastic Composite Material for RF and Microwave Applications

Author(s):  
R. Czarny ◽  
T. Q. V. T. Q. Hoang ◽  
B. Loiseaux ◽  
G. Bellomonte ◽  
R. Lebourgeois ◽  
...  
2011 ◽  
Vol 279 ◽  
pp. 181-185 ◽  
Author(s):  
Guo Hua Zhao ◽  
Qing Lian Shu ◽  
Bo Sheng Huang

This paper proposes a material model of AS4/PEEK, a typical thermoplastic composite material, for the general purpose finite element code—ANSYS, which can be used to predict the mechanical behavior of AS4/PEEK composite structures. The computational result using this model has a good agreement with the test result. This investigation can lay the foundation for the numerical simulation of thermoplastic composite structures.


2021 ◽  
pp. 114992
Author(s):  
Andrey Tumarkin ◽  
Natalya Tyurnina ◽  
Nikolay Mukhin ◽  
Zoya Tyurnina ◽  
Olga Sinelshchikova ◽  
...  

2019 ◽  
Vol 45 (4) ◽  
pp. 4316-4321 ◽  
Author(s):  
Mahender C ◽  
Sumangala T P ◽  
Ramesh Ade ◽  
Saranya A ◽  
Shiva Prasad ◽  
...  

ChemInform ◽  
2015 ◽  
Vol 46 (43) ◽  
pp. no-no
Author(s):  
Raz Muhammad ◽  
Yaseen Iqbal ◽  
Ian M. Reaney

2022 ◽  
Vol 310 ◽  
pp. 131423
Author(s):  
Leilei Li ◽  
Junting Liu ◽  
Shuyao Cao ◽  
Jie Xu ◽  
Emilia Pawlikowska ◽  
...  
Keyword(s):  
Low Loss ◽  

Author(s):  
I.L. Baciu ◽  
I. Crivelli Visconti ◽  
A. Langella ◽  
V. Luprano ◽  
R. Teti

2018 ◽  
Vol 60 ◽  
pp. 00027 ◽  
Author(s):  
Andrii Sudakov ◽  
Andrii Dreus ◽  
Diana Sudakova ◽  
Oleksandr Khamininch

The article presents the results of experimental and theoretical studies, the purpose of which was to substantiate the technology of drilling wells isolation using new thermoplastic composite material. The basis of the proposed material is gravel, and secondary polyethylene terephthalate acts as a binding material. The use of the proposed insulation material avoids a number of disadvantages specific for traditional grouting mortars. The technology of material application provides its melting in a well by thermomechanical drilling. The article deals with the issues, related to the substantiation of the optimal formulation of a thermoplastic composite material based on secondary polyethylene terephthalate, and the determination of rational operating parameters of thermomechanical drilling, which allow to melt effectively the material at the bottom of a well. The possibility of material application for the insulation of absorbing horizons in borehole conditions has been proved. Based on the analysis of the heat balance at the bottom of a well, the calculation procedure has been proposed and the dependences of the velocity and time of thermomechanical melting of the grouting thermoplastic composite material on the operating parameters of drilling, thermal properties and geometric characteristics of the drill bit, have been determined.


2020 ◽  
Vol 4 (4) ◽  
pp. 159
Author(s):  
Scott Landes ◽  
Todd Letcher

Through the past two decades, there has been a continued push for renewable resources and future sustainability of materials and processes. This has prompted more developments of providing environmentally friendly practices and products, both in terms of higher recyclability and greater use of renewable resources. An important area of interest are materials for construction and manufacturing purposes, specifically “green” sustainable reinforcement materials for thermoplastic composite materials. During this time, there has also been an evolution in manufacturing methods. Additive manufacturing (AM) has continued to grow exponentially since its inception for its extensive benefits. This study aims to investigate an additive manufactured composite material that is a greener alternative to other composites that are not reinforced by natural fibers. A bamboo filled polylactic acid (PLA) composite manufactured by fused filament fabrication was evaluated in order to gather mechanical strength characteristics by means of tensile, flexure, compression, impact, and shear tests. In this material, the bamboo reinforcing material and the PLA matrix material can both be sourced from highly renewable resources. In this study, a variety of test samples were manufactured at different manufacturing parameters to be used for mechanical testing. The results were recorded with respect to varying manufacturing parameters (raster angle orientation). It was found that the 0° raster angle orientation performed the best in every category except tensile. Additively manufactured bamboo filled PLA was also seen to have comparable strength to certain traditionally manufactured bamboo fiber reinforced plastics.


2017 ◽  
Vol 5 (38) ◽  
pp. 10094-10098 ◽  
Author(s):  
Di Zhou ◽  
Li-Xia Pang ◽  
Da-Wei Wang ◽  
Chun Li ◽  
Biao-Bing Jin ◽  
...  

Bi2(Li0.5Ta1.5)O7 ceramics possess a εr of 65.1, a Qf of 15 500 GHz and a TCF of −17.5 ppm °C−1. The sintering temperature was lowered to 920 °C by the addition of 2 mol% Bi2O3, which makes them potential candidates for dielectric resonators and LTCC applications.


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