Preparation, characterization and properties of FEP modified PTFE/glass fiber composites for microwave circuit application

Yuan, Ying; Yang, Jing; Tan, Bingliang; Tang, Bin; Li, Enzhu; Zhang, Shuren

doi:10.1007/s10854-016-6277-4

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…As illustrated in Fig. 11, the aerogels fabricated in this work have an improved performance compared to other materials such as the SiO 2 xerogel, 124,125 ODA-PMDA aerogel, 84 BPDA-ODA/6FAPB aerogel, 126 F88/MSQ, 127 CBDA/TFDB/OAPS aerogel, 128 PTFE/FEP, 129 and BTFB/ODPA/POSS aerogel 130 and are comparable to the FPEN film, 131 BaTiO 3 -silica aerogel 132 and BPDA-ODA/TFMB aerogel. 133…”

Section: Resultsmentioning

confidence: 89%

Novel, flexible, and transparent thin film polyimide aerogels with enhanced thermal insulation and high service temperature

et al. 2022

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Section: Resultsmentioning

confidence: 89%

Novel, flexible, and transparent thin film polyimide aerogels with enhanced thermal insulation and high service temperature

et al. 2022

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“…Various inorganic fillers reinforced polymer composites have been described [12][13][14][15][16][17][18][19][20][21][22][23]. The composites offered better electrical, thermal and mechanical properties that cannot be obtained from the individual constituents.…”

Section: Introductionmentioning

confidence: 99%

Recycled soda lime silica glass inclusion in polytetrafluoroethylene matrix as reinforcement for microwave substrate application

Alhaji

Abbas

Zainuddin

et al. 2022

Materialwissenschaft Werkst

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Recycled soda lime silica glass‐filled polytetrafluoroethylene composites were prepared for substrate application at microwave frequencies. Various volume fractions (0.05–0.25) of the filler were dispersed in the polytetrafluoroethylene matrix. The composites’ dielectric, mechanical, and thermal properties were examined with respect to the filler content. X‐ray diffraction data established the phase structure of the polytetrafluoroethylene matrix and recycled soda lime silica glass. Scanning electron microscope micrographs revealed uniform filler distribution at lower recycled soda lime silica contents, while energy dispersive x‐ray analysis showed the purity of the composites. The tensile strength of the composites reduced from 13.5 MPa to 4.26 MPa, while the moisture absorption and density raised from 0.07 % and 2.195 g/cm3 to 0.19 % and 2.228 g/cm3 when the recycled soda lime silica filler volume fraction was adjusted from 0.05–0.25. The lowest coefficient of thermal expansion values was recorded at 0.25 % recycled soda lime silica volume fraction, which increased from 31.12 ppm/°C to 68.32 ppm/°C at 40 °C to 200 °C. At 0.05 filler volume fraction, the respective values of ϵ' ${\varepsilon{} { {^\prime}}}$ , tanδ ${tan\delta }$ and Td ${{T}_{d}}$ of the composites decreased from 2.20, 0.0017, and 29.69 ps to 2.15, 0.0015, and 29.35 ps in the 8.2 GHz–12.4 GHz range.

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“…The structure of such blends was investigated in [ 40 , 41 , 42 , 43 , 44 ]. Analysis of such blends using differential scanning calorimetry and X-ray diffraction shows that FEP and PTFE are immiscible and coexist as separate phases over a wide range of blend concentrations, and no co-crystallisation effect was observed [ 40 , 41 , 42 , 43 ]. Chemical bonds between these two fluoropolymers can form only as a result of crosslinking under irradiation [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

“…Chemical bonds between these two fluoropolymers can form only as a result of crosslinking under irradiation [ 44 ]. Increasing the FEP content in PTFE-based blends results in a decrease in the viscosity of the blend melt and in an improvement of the dielectric properties and water absorption [ 42 ]. The addition of a small amount of PTFE to the FEP matrix allows one to improve the strain-hardening properties of FEP significantly [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

Tribological, Mechanical and Thermal Properties of Fluorinated Ethylene Propylene Filled with Al-Cu-Cr Quasicrystals, Polytetrafluoroethylene, Synthetic Graphite and Carbon Black

et al. 2021

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Antifriction hybrid fluorinated ethylene propylene-based composites filled with quasicrystalline Al73Cu11Cr16 powder, polytetrafluoroethylene, synthetic graphite and carbon black were elaborated and investigated. Composite samples were formed by high-energy ball milling of initial powders mixture with subsequent consolidation by injection molding. Thermal, mechanical, and tribological properties of the obtained composites were studied. It was found that composite containing 5 wt.% of Al73Cu11Cr16 quasicrystals and 2 wt.% of nanosized polytetrafluoroethylene has 50 times better wear resistance and a 1.5 times lower coefficient of dry friction comparing with unfilled fluorinated ethylene propylene. Addition of 15 wt.% of synthetic graphite to the above mentioned composition allows to achieve an increase in thermal conductivity in 2.5 times comparing with unfilled fluorinated ethylene propylene, at that this composite kept excellent tribological properties.

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Preparation, characterization and properties of FEP modified PTFE/glass fiber composites for microwave circuit application

Cited by 9 publications

References 18 publications

Novel, flexible, and transparent thin film polyimide aerogels with enhanced thermal insulation and high service temperature

Novel, flexible, and transparent thin film polyimide aerogels with enhanced thermal insulation and high service temperature

Recycled soda lime silica glass inclusion in polytetrafluoroethylene matrix as reinforcement for microwave substrate application

Tribological, Mechanical and Thermal Properties of Fluorinated Ethylene Propylene Filled with Al-Cu-Cr Quasicrystals, Polytetrafluoroethylene, Synthetic Graphite and Carbon Black

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