PEEK/SiO2 composites with high thermal stability for electronic applications

Goyal, R. K.; Rokade, Kasturi A.; Kapadia, A.S.; Selukar, Balaji S.; Garnaik, Baijayantimala

doi:10.1007/s13391-012-2107-x

Cited by 21 publications

(6 citation statements)

References 25 publications

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“…At the highest filler loading, a final degradation temperature of ca 507 °C was observed with a char residue of 37.99% which increased markedly from 3.92% observed for 2wt% Cu–Al 2 O 3 inclusion. The particular behaviour was observed upon heating when long polymeric chains broke down into small fragments resulting in their physical entrapment into filler particles, making it difficult for them to be decomposed further, thus aiding an increased thermal stability of the Cu–Al 2 O 3 /PVC composites . Similar trend is seen in previously reported data where thermal stability was enhanced due to filler incorporation, hindering the segmental movement of polymer chains …”

Section: Resultssupporting

confidence: 79%

Design and fabrication of electro‐conductive polymer nanocomposites with mechanical and thermal resistance

Batool

Nadeem

Gill

et al. 2018

Polymer International

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The commencement of the industrial revolution paved the way for the fabrication of flexible polymers with high-strength metalloceramics as novel materials of all kinds. Fabricating metal-ceramic/polymer conductive composites is one such dimension followed for the present research work making use of the properties of the three components. Electroless deposition, for permanent metallic coating, was performed to coat Al 2 O 3 with metallic Cu followed by the inclusion of the Cu-Al 2 O 3 filler into a poly(vinyl chloride) (PVC) matrix. X-ray diffraction and energy-dispersive X-ray studies predicted a prominent growth of metallic Cu crystallites onto Al 2 O 3 with an increased average size and variation in elemental composition, respectively, when compared to pristine Al 2 O 3 . Morphological behaviour via scanning electron microscopy also envisioned uniform Cu coating onto Al 2 O 3 and a homogeneous dispersion throughout the polymer matrix. When incorporated into PVC, electrical conductivity analysis highlighted a distinct variation in composite phases from insulating (7.14 × 10 −16 S cm −1 ) to semiconducting behaviour (8.33 × 10 −5 S cm −1 ) as a function of Cu-Al 2 O 3 filler. Mechanical behaviour (tensile strength, Young's modulus and elongation at break) and thermal properties of the prepared composites also indicated a substantial improvement in material strength with Cu-Al 2 O 3 incorporation. The enhanced electrical conductivity along with improved thermomechanical status with significant filler-matrix interaction permits the potential usage of such novel composites in a range of state-of-the-art semiconducting electronic devices.

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Section: Resultssupporting

confidence: 79%

Design and fabrication of electro‐conductive polymer nanocomposites with mechanical and thermal resistance

Batool

Nadeem

Gill

et al. 2018

Polymer International

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“…To maintain the mechanical properties of PEEK and improve the bioactivity it is possible to use HA nanoparticles [22]. The most promising way for particle embedding with regard to maintenance of mechanical stability of PEEK seems to be an in situ synthetic process, where the polymer building reaction is performed in presence of the particles at the site of application [19], [20]. Another example of a bioactive PEEK-composite is the combination with tricalcium phosphate (TCP).…”

Section: Bioactive Compositesmentioning

confidence: 99%

Functionalization of polyethetherketone for application in dentistry and orthopedics

et al. 2017

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Abstract:Since late 1990s, polyetheretherketone (PEEK) has presented a promising polymeric alternative to metal implant components, particularly in orthopedic and traumatic applications. However, PEEK is biologically inert, which has constrained its potential applications. In this manner, enhancing the bioactivity of PEEK is a huge challenge that must be comprehended to completely understand the potential advantages. Up to now, two noteworthy methodologies are discussed to enhance the bioactivity of PEEK, including bulk and surface modification. Although the latter is extremely challenging due to the very high physical and chemical stability of the high performance polymer, there are some stated modification reactions in the literature, which will be collocated with in the literature-reported PEEK composites in the present article. We will furthermore add information on polymer-based drug delivery systems and the biofunctionalization of polymers in general and discuss their applicability for PEEK, as we estimate that these strategies will gain greater attention in the future. At the end of the article, our own research on the development of a PEEK-associated biodegradable drug-delivery system with potential application in dentistry or orthopedics will be highlighted.

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“…Polyetheretherketone (PEEK) is a high-performance engineering plastic with excellent properties such as heat resistance, super balanced mechanical strength, and chemical inertness and is widely used in the medical, 1,2 electronic, 3 aerospace, 4 and automotive industries. 5 Although PEEK has super balanced mechanical strength, its relatively high friction coefficient and insufficient wear resistance limit its application as a tribo-material under heavy-load and high-speed conditions, unless modified.…”

Section: Introductionmentioning

confidence: 99%

Preparation of high-performance PEEK anti-wear blends with melt-processable PTFE

Qiu

et al. 2019

High Performance Polymers

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High-performance anti-wear polyetheretherketone/polytetrafluoroethylene (PEEK/PTFE) blends have drawn much attention over the past few years, owing to their wide range of potential applications. However, a convenient and effective method to prepare such blends with superior mechanical and tribological properties is still lacking. In this work, we propose a promising approach that uses melt-processable PTFE (MP PTFE), instead of conventional PTFE, to prepare anti-wear blends. MP PTFE, with melt flow abilities under appropriate conditions, can disperse homogeneously in PEEK, enhancing both the mechanical and tribological properties of the PEEK/PTFE blend. To prove this postulation, in this work, both MP PTFE and commercial PTFE were blended with PEEK, separately, and the effects of PTFE type and content on the tensile and tribological properties of the blends were studied. The results showed that, although the addition of commercial PTFE to PEEK could increase the wear resistance, it decreased the tensile strength of PEEK significantly. Compared to the blends with commercial PTFE, the blends with MP PTFE exhibited better tribological performance and higher tensile strength for PTFE content below 10 wt%. It was confirmed that the better dispersion of MP PTFE in PEEK endowed the blends with higher tensile strength. The surface analysis indicated that the MP PTFE could readily migrate to and enrich the surfaces of the blends. The relatively high PTFE content on the surface favored the formation of tribo-films, enhancing the tribological properties of the blends.

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PEEK/SiO2 composites with high thermal stability for electronic applications

Cited by 21 publications

References 25 publications

Design and fabrication of electro‐conductive polymer nanocomposites with mechanical and thermal resistance

Design and fabrication of electro‐conductive polymer nanocomposites with mechanical and thermal resistance

Functionalization of polyethetherketone for application in dentistry and orthopedics

Preparation of high-performance PEEK anti-wear blends with melt-processable PTFE

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