Investigations on the suitability of PEEK material under space environment conditions and its application in a parabolic space antenna

Kalra, Sahil; Munjal, B. S.; Singh, Vaibhav Raj; Mahajan, Milind; Bhattacharya, Bishakh

doi:10.1016/j.asr.2019.03.006

Cited by 28 publications

(8 citation statements)

References 5 publications

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“…The unique properties of PEEK such as high temperature resistance, excellent mechanical performance and chemical resistance, outstanding dimensional stability and biocompatibility have generated a lot of interest in PEEK as a substitution for metals in industries such as biomaterials and aerospace 24–30 . However, PEEK has low electrical conductivity which limits its applicability as a high performance ESD material 31–36 .…”

Section: Introductionmentioning

confidence: 99%

High‐performance and cost‐effective melt blended poly(ether ether ketone)/expanded graphite composites for mass production of antistatic materials

Mokhtari

Archer

Bloomfield

et al. 2021

Polymer International

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In this study unfunctionalized expanded graphite (EG) was incorporated into poly(ether ether ketone) (PEEK) using twin‐screw extrusion and injection moulding to manufacture cost‐effective PEEK/EG composites for mass production of high‐performance antistatic materials. Direct current electrical conductivity, morphology, rheological and thermal properties of the composites were investigated. At an EG loading of 5 vol%, the electrical conductivity exhibited an abrupt increase to 1.45 × 10−5 S m−1 which was in the required range of electrical conductivity of antistatic materials. The frequency dependence of the storage modulus of the melt containing 2 vol% EG decreased significantly at low frequencies. Viscosity did not increase much with the addition of EG in comparison with other nanofillers such as carbon nanotubes. The crystallinity of PEEK increased to 41.11% from 35.87% upon addition of 3 vol% EG. EG improved the thermal stability of PEEK by an increase in the initiation temperature of its decomposition steps. © 2021 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.

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Section: Introductionmentioning

confidence: 99%

High‐performance and cost‐effective melt blended poly(ether ether ketone)/expanded graphite composites for mass production of antistatic materials

Mokhtari

Archer

Bloomfield

et al. 2021

Polymer International

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“…The paraboloid, on the other hand, uses pyramidal or paraboloid conical to feed. The radiation pattern of this antenna is strongly determined by the radiation pattern of the feeder used as well as the reflector measurements and material [ 65 , 66 ]. An evaluation study on the desirability of defocusing a large-sized multi-beam hybrid parabolic antenna (MBHPA) has been performed [ 67 ].…”

Section: Antenna Overviewmentioning

confidence: 99%

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

Kelechi¹,

Alsharif

Oluwole³

et al. 2021

Sensors

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Unmanned aerial vehicle (UAV) antenna tracking system is an electromechanical component designed to track and steer the signal beams from the ground control station (GCS) to the airborne platform for optimum signal alignment. In a tracking system, an antenna continuously tracks a moving target and records their position. A UAV tracking antenna system is susceptible to signal loss if omnidirectional antenna is deployed as the preferred design. Therefore, to achieve longer UAV distance communication, there is a need for directional high gain antenna. From design principle, directional antennas are known to focus their signal energy in a particular direction viewed from their radiation pattern which is concentrated in a particular azimuth direction. Unfortunately, a directional antenna is limited by angle, thus, it must always be directed to the target. The other limitation of a UAV mechanical beam steering system is that the system is expensive to maintain and with low reliability. To solve this problem, we are proposing the use of MIMO technology as a readily available technology for UAV beyond line of sight technology. Although UAV antenna tracking is domiciled in the mechanical beam steering arrangement, this study shows that this native technology could be usurped by MIMO beam forming.

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“…It can be moulded by injection moulding and is used in nuclear plants, military, aerospace, chemical process equipment, oil‐well and bio applications 4–10 . PEEK has wide commercial application in electronic, telecommunication, healthcare and transportation industries (automotive, aeronautics and aerospace) and interest is continually growing in the ability to manufacture PEEK composites for electromagnetic interface (EMI) shielding and anti‐static applications to further enhance its applicability in these sectors 11–18 . Greater specific strength, more efficient, sustainable and cost effective mass production, higher corrosion resistance, and the absorption‐based mechanism of EMI shielding of PEEK materials has given rise to significant interest in PEEK as a replacement for metals from industries such as aerospace, weapons and microelectronics 19–23 .…”

Section: Introductionmentioning

confidence: 99%

A review of electrically conductive poly(ether ether ketone) materials

Mokhtari

Archer

Bloomfield

et al. 2021

Polymer International

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Poly(ether ether ketone) (PEEK) is a high‐performance thermoplastic with a distinctive combination of corrosion resistance, thermo‐oxidative stability and outstanding physical and mechanical properties at high temperatures. A pertinent step forward in the development of this thermoplastic has been the inclusion of electrically conductive fillers to expand its functionality. In this review an overview of the research on electrically conductive PEEK composites is provided. Conductive filler type, fabrication methods, characterization details and different properties are described. Carbon nanotubes, graphene nanoplatelets and other organic and inorganic conductive fillers such as expanded graphite and nickel have been incorporated into PEEK by techniques such as extrusion, injection moulding and cold and hot compression moulding and in some cases with pre‐processing steps including mechanochemical modifications in organic solvents. The influences of type, loading and compatibilization of fillers and processing conditions on the mechanical and electrical conductivity properties of the composites are analysed and compared. The incorporated fillers have been able to enhance the electrical conductivity of the PEEK composites to either the semiconducting or conductive regions. PEEK composites containing carbon nanotubes compatibilized by polysulfones and poly(ether imide) achieved electrical conductivity values in the semiconducting region at the lowest electrical percolation threshold of 0.1 wt%. Additionally, the inclusion of 10 wt% expanded graphite and 10 vol% inorganic macroparticles of nickel noticeably improved the electrical conductivity of PEEK into the conductive region. © 2021 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Investigations on the suitability of PEEK material under space environment conditions and its application in a parabolic space antenna

Cited by 28 publications

References 5 publications

High‐performance and cost‐effective melt blended poly(ether ether ketone)/expanded graphite composites for mass production of antistatic materials

High‐performance and cost‐effective melt blended poly(ether ether ketone)/expanded graphite composites for mass production of antistatic materials

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

A review of electrically conductive poly(ether ether ketone) materials

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