Modified BCZN particles filled PTFE composites with high dielectric constant and low loss for microwave substrate applications

Wang, Hao; Zhou, Fuming; Guo, Jianming; Ye, Hui; Tong, Jianxi; Zhang, Qilong

doi:10.1016/j.ceramint.2019.11.252

Cited by 34 publications

(20 citation statements)

References 47 publications

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“…The increase in moisture absorption is attributed to the higher surface area of the smaller-sized recycled BRS particles [ 8 ]. Furthermore, the deterioration of moisture absorption is related to the enhanced porosity and density in the composites [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Effects of Particle Size on the Dielectric, Mechanical, and Thermal Properties of Recycled Borosilicate Glass-Filled PTFE Microwave Substrates

et al. 2021

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Low dielectric loss and low-cost recycled borosilicate (BRS) glass-reinforced polytetrafluoroethylene (PTFE) composites were fabricated for microwave substrate applications. The composites were prepared through a dry powder processing technique by dispersing different micron sizes (25 µm, 45 µm, 63 µm, 90 µm, and 106 µm) of the recycled BRS filler in the PTFE matrix. The effect of the filler sizes on the composites’ thermal, mechanical, and dielectric properties was studied. The dielectric properties of the composites were characterised in the frequency range of 1–12 GHz using an open-ended coaxial probe (OCP) connected to a vector network analyser (VNA). XRD patterns confirmed the phase formation of PTFE and recycled BRS glass. The scanning electron microscope also showed good filler dispersion at larger filler particle sizes. In addition, the composites’ coefficient of thermal expansion and tensile strength decreased from 12.93 MPa and 64.86 ppm/°C to 7.12 MPa and 55.77 ppm/°C when the filler size is reduced from 106 μm to 25 μm. However, moisture absorption and density of the composites increased from 0.01% and 2.17 g/cm3 to 0.04% and 2.21 g/cm3. The decrement in filler size from 106 μm to 25 μm also increased the mean dielectric constant and loss tangent of the composites from 2.07 and 0.0010 to 2.18 and 0.0011, respectively, while it reduced the mean signal transmission speed from 2.088 × 108 m/s to 2.031 × 108 m/s. The presented results showed that PTFE/recycled BRS composite exhibited comparable characteristics with commercial high-frequency laminates.

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Section: Resultsmentioning

confidence: 99%

Effects of Particle Size on the Dielectric, Mechanical, and Thermal Properties of Recycled Borosilicate Glass-Filled PTFE Microwave Substrates

et al. 2021

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“…Despite E-glass fabrics and LT filler were modified by PhTES and KH570 separately, the increasing content of LT filler still causes the increase of interface defects, which decreases the flexure strength of composite laminates. These factors influence the flexure strength collectively and exhibited the highest flexural strength at the ratio of 0.4 [ 17 ].…”

Section: Resultsmentioning

confidence: 99%

“…Herein, different silane coupling agents (SCAs) have been applied to improve the interface between resins and inorganic fillers. Meanwhile, these surface modification agents can promote the homogeneous distribution of fillers and reduce the water absorption of composites [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

MPPE/SEBS Composites with Low Dielectric Loss for High-Frequency Copper Clad Laminates Applications

Guo

Wang

Zhang³

et al. 2020

Polymers

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Copper clad laminates (CCLs) with low dissipation factor (Df) are urgently needed in the fields of high-frequency communications devices. A novel resin matrix of modified poly (2,6-dimethyl-1,4-phenylene ether) (MPPE) and styrene-ethylene/butylene-styrene (SEBS) was employed in the fabrication of high-frequency copper clad laminates (CCLs). The composites were reinforced by E-glass fabrics, which were modified with phenyltriethoxysilane (PhTES). The composite laminates obtained exhibited impressive dielectric loss of 0.0027 at 10 GHz when the weight ratio of MPPE to SEBS was 5:1. In order to modify the dielectric constant (Dk), coefficient of thermal expansion (CTE) and other performances of laminates, Li2TiO3 (LT) ceramic powders were introduced into the resin matrix. The composite laminates showed low dielectric loss of 0.0026 at 10 GHz and relatively high flexural strength of 125 MPa when the mass ratio of LT fillers to resin is 0.4. Moreover, the composite laminates all maintain low water uptake (<0.5%). The microstructure and thermal properties of composite laminates filled with LT ceramic powders were also tested. These results show that copper clad laminates prepared with modified polyphenylene ether (MPPE)/SEBS and LT ceramic fillers have strong competitiveness to fabricate printed circuit boards (PCBs) for high-frequency and high-speed applications.

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“…The high dielectric constant composites, which are compounded of high dielectric constant ceramics and polymer matrix, possess both a high dielectric constant from ceramics and excellent mechanical properties from polymer. [4][5][6][7] According to Wang's research, 8 in Polytetrafluoroethylene (PTFE)/0.7Ba(Co 1/3 Nb 2/3 )O 3 -0.3Ba(Zn 1/3 Nb 2/3 )O 3 system, a high dielectric constant of 7.7 could be obtained when the filler volume fraction reached 50 vol%. But due to the low crosslinking density of PTFE, the bending strength was only 23.3 MPa.…”

Section: Introductionmentioning

confidence: 99%

Study on properties of Ca_0.9La_0.067TiO₃‐0.01Al₂O₃ ceramics reinforced PSAE/fiber composite substrate with high ε_r

et al. 2022

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A "self-permeation" method was used to fabricate a Ca 0.9 La 0.067 TiO 3 -0.01Al 2 O 3 (CLT)-reinforced polysilylaryl-enyne/fiber multilayer board with different volume fractions of CLT (0-40 vol%). The microstructure, dielectric, mechanical, and thermal properties were fully studied. The results showed that the composite with optimal dielectric properties (ε r ∼8.75, tanδ∼0.0043) could be obtained when the volume fraction of CLT reached 30 vol%. Meanwhile, the thermal conductivity reached a high level of 0.644 W/(m⋅K) and 0.762 W/(m⋅K) at Z and X/Y directions, respectively. Due to the high decomposition temperature of PSAE, T d5 (the temperature corresponding to 5% weight loss) of composite loading with 30 vol% CLT was higher than 900°C, which indicates an excellent thermal resistance.And the bending strength could reach 115.3 MPa indicating excellent mechanical property. The novel polysilylaryl-enyne/fiber/Ca 0.9 La 0.067 TiO 3 -0.01Al 2 O 3 multilayer board with excellent performance is expected to be a candidate material for print circuit boards and widely used in the microwave communication field.

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Modified BCZN particles filled PTFE composites with high dielectric constant and low loss for microwave substrate applications

Cited by 34 publications

References 47 publications

Effects of Particle Size on the Dielectric, Mechanical, and Thermal Properties of Recycled Borosilicate Glass-Filled PTFE Microwave Substrates

Effects of Particle Size on the Dielectric, Mechanical, and Thermal Properties of Recycled Borosilicate Glass-Filled PTFE Microwave Substrates

MPPE/SEBS Composites with Low Dielectric Loss for High-Frequency Copper Clad Laminates Applications

Study on properties of Ca_0.9La_0.067TiO₃‐0.01Al₂O₃ ceramics reinforced PSAE/fiber composite substrate with high ε_r

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Modified BCZN particles filled PTFE composites with high dielectric constant and low loss for microwave substrate applications

Cited by 34 publications

References 47 publications

Effects of Particle Size on the Dielectric, Mechanical, and Thermal Properties of Recycled Borosilicate Glass-Filled PTFE Microwave Substrates

Effects of Particle Size on the Dielectric, Mechanical, and Thermal Properties of Recycled Borosilicate Glass-Filled PTFE Microwave Substrates

MPPE/SEBS Composites with Low Dielectric Loss for High-Frequency Copper Clad Laminates Applications

Study on properties of Ca0.9La0.067TiO3‐0.01Al2O3 ceramics reinforced PSAE/fiber composite substrate with high εr

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Study on properties of Ca_0.9La_0.067TiO₃‐0.01Al₂O₃ ceramics reinforced PSAE/fiber composite substrate with high ε_r