Ba(Mg1/3Ta2/3)O3 filled PTFE composites for microwave substrate applications

James, Nijesh K.; Jacob, Karl; Murali, K. P.; Ratheesh, R.

doi:10.1016/j.matchemphys.2010.03.035

Cited by 30 publications

(8 citation statements)

References 22 publications

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“…The filler loadings improved the ε r which was reported to ε r~6 .7 which showed improved microwave characteristics. The composite substrates are promising in microwave domain [76]. A similar work was carried out by filling TiO 2 and SiO 2 inorganic fillers onto the PTFE matrix to process the microwave substrates.…”

Section: Ptfe Composite Substrates For Microwave Applicationsmentioning

confidence: 99%

Performance properties and applications of polytetrafluoroethylene (PTFE)—a review

Dhanumalayan

Joshi

2018

Adv Compos Hybrid Mater

308

143

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High-performance commodity polymers are in demand due to low cost, durability, easy productivity, and recycling ability. This article comprises a survey on the performance properties of polytetrafluoroethylene (PTFE) fluoropolymer. It is a well-known choice for coatings, insulation, thermal sealing, lubrication, bearings, and clinical applications. PTFE was engineered in many forms as a function of loading nano and micro fillers for different purposes and the improved properties and performance were addressed by the researchers. Hence, we disclosed the various casting routes of PTFE which is feasible for reliable processing to serve in domestic and industrial applications.

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Section: Ptfe Composite Substrates For Microwave Applicationsmentioning

confidence: 99%

Performance properties and applications of polytetrafluoroethylene (PTFE)—a review

Dhanumalayan

Joshi

2018

Adv Compos Hybrid Mater

308

143

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“…At higher filler loading, where a high amount of EFB, the interface region was reduced in between the filler and matrix and this couldinfluence the dielectric constant and loss factor. It was reported that the interface region hadprofound influence on deciding the effective dielectric properties of the composite systems [7]- [9]. The increasing addition of filler in the composite turn the composite system increases leading to poor packing and formation of porosity occur.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

“…For a composite system consisting of a mixture heterogeneous, dielectric constant optimum value is between the DC and the DC filler matrix. Nowadays models that are widely used are the Maxwell-Wagner-Sillar [9],Kraszewski [11] and Licthtenecker [8,11]as in Equations (1)(3). These models enable material scientists to reach at novel composite systems without much experimental iterations [8].…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Structural and Dielectric Properties of Polyurethane Palm Oil Based Filled Empty Fruit Bunch

Mahmud¹,

Jusoh²,

You³

et al. 2017

IJAERS

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“…The (Na 0.6 Li 0.4 ) 0.5 Nd 0.5 TiO 3 and glass fiber were filled into PTFE matrix to fabricate composite substrate, and the composites showed the best dielectric properties: ε = 10.4, tanδ = 0.0026 (10 GHz), and excellent τ ε = -0.9 ppm/℃ when the weight fraction of fillers was 60 wt% [7]. PTFE/Ca 0.55 Nd 0.3 TiO 3 (CNT) composites possessed the best dielectric properties: ε = 12, and low tanδ = 0.00085 (10 GHz) at 50 vol% filler contents; the PTFE/Ba(Mg 1/3 Ta 2/3 )O 3 composite exhibited the dielectric properties: ε = 6.7, tanδ = 0.003 (X-band) when the weight fraction of particles was 76 wt%, but the τ ε of both composites were not studied [8,9]. The ε, tanδ, and τ ε have always been the key properties for substrate materials.…”

Section: Introduction mentioning

confidence: 99%

Surface-modified Zn0.5Ti0.5NbO4 particles filled polytetrafluoroethylene composite with extremely low dielectric loss and stable temperature dependence

et al. 2020

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Polymer-ceramic composites are widely applied in microwave substrate materials due to the excellent dielectric properties and simple preparation process recently. Polytetrafluoroethylene-based (PTFE) composites filled with Zn0.5Ti0.5NbO4 (ZTN) ceramic particles were fabricated by hot-pressing. The particles were modified by C14H19F13O3Si to enhance the interface compatibility between PTFE and ZTN powders, which was characterized by X-ray photoelectron spectroscopy (XPS) and contact angle. The surface characteristic of particles transformed into hydrophobicity and tight microstructure as well as better dielectric properties were obtained after the surface modification. The microstructure, dielectric, thermal, mechanical properties, and water absorption of the composites concerning ZTN content were investigated. Modified ZTN/PTFE composites with 50 vol% ZTN particles exhibit excellent dielectric properties with a high dielectric constant of 8.3, an extremely low dielectric loss of 0.00055 at 7 GHz, and a stable temperature coefficient of the dielectric constant of −12.2 ppm/°C. All the properties show modified ZTN particles filled PTFE composite is the potential material for microwave substrate application.

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Ba(Mg1/3Ta2/3)O3 filled PTFE composites for microwave substrate applications

Cited by 30 publications

References 22 publications

Performance properties and applications of polytetrafluoroethylene (PTFE)—a review

Performance properties and applications of polytetrafluoroethylene (PTFE)—a review

Structural and Dielectric Properties of Polyurethane Palm Oil Based Filled Empty Fruit Bunch

Surface-modified Zn0.5Ti0.5NbO4 particles filled polytetrafluoroethylene composite with extremely low dielectric loss and stable temperature dependence

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