Cyanate Esters

Kandelbauer, Andreas

doi:10.1016/b978-1-4557-3107-7.00011-7

Cited by 12 publications

(14 citation statements)

References 116 publications

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“…Initially, up to temperature of 370–380 °C, the blends remain stable with negligible weight loss. The slight weight loss might be attributed to the loss of volatile compounds and loss of uncross-linked monomers . Major weight loss of the blends occurs in zone 2, at a temperature range of 380–450 °C.…”

Section: Results and Discussionmentioning

confidence: 99%

Radar Transparent, Impact-Resistant, and High-Temperature Capable Radome Composites Using Polyetherimide-Toughened Cyanate Ester Resins for High-Speed Aircrafts through Resin Film Infusion

Gopinathapanicker

Inamdar

Anand

et al. 2020

Ind. Eng. Chem. Res.

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High-temperature capable (T g: 280–290 °C), broadband radar transparent [ε′: 3.3–3.9; ε″: 0.02–0.17; tan δ: 0.01–0.04 and transmission loss: −0.18 to −1.26 dBl in C, X, and Ku bands (5.4–18 GHz)], composites were developed using polyetherimide (PEI)-toughened bisphenol E cyanate ester resin and E glass fabrics through an out-of-autoclave process called resin film infusion at a range of PEI weight fractions via a solvent-free method. Their pronounced increase in impact resistance in terms of mode I interlaminar fracture toughness (G Ic; 50–100%), postimpact residual compressive strength (>85%), and enhanced structural properties such as tensile strength, compressive strength, in-plane shear strength, and interlaminar shear strength compared with control laminates, which later re-corroborated with a structure–property relationship using surface morphology proving that PEI-modified cyanate esters can find extensive applications in impact-resistant composite radomes for high-speed aircrafts.

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Section: Results and Discussionmentioning

confidence: 99%

Radar Transparent, Impact-Resistant, and High-Temperature Capable Radome Composites Using Polyetherimide-Toughened Cyanate Ester Resins for High-Speed Aircrafts through Resin Film Infusion

Gopinathapanicker

Inamdar

Anand

et al. 2020

Ind. Eng. Chem. Res.

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“…Due to its simplicity and higher efficiency, electrospinning is the most popular method used to form nanofibers. The drawback of low production volume of conventional electrospinning can be overcome by use of multi-needle electrospinning and needleless spinning, but at the expense of increase in production cost . Other techniques, such as centrifugal rotary spinning, , pressurized gyration, , force spinning, and infusion gyration, which utilizes centrifugal force to produce fibers, are gaining attraction over electrospinning, as they are largely independent of the materials’ properties.…”

Section: Processing Characteristics Of Thermoplastic/cyanate Ester Bl...mentioning

confidence: 99%

“…One of the major requirements of resin in structural applications is the balance between damage tolerance and hot-wet performance. Thus, thermoplastic-toughened CEs provide an excellent balance between toughness and compressive strength, without degrading creep- and solvent-resistance properties. , Such primary structural applications include parts around aero-engines, tail assembly, air ducts in aircrafts, muffler systems in high-speed racing cars, rotor blades in helicopters, etc. ,, In developing high-speed missiles, e.g., Mach 3, the temperature produced at the nose is high ( T ≈ 500 °C), and hence, high- T g CEs toughened with thermoplastic composites out-perform ceramic materials, due to their high short-term thermal stability, light weight, and low production cost …”

Section: Application Of Cyanate Ester Compositesmentioning

confidence: 99%

Thermoplastic-Toughened High-Temperature Cyanate Esters and Their Application in Advanced Composites

Inamdar

Cherukattu

Anand

et al. 2018

Ind. Eng. Chem. Res.

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Cyanate esters (CEs) are recognized as matrix materials in composites for high-temperature structural applications, owing to their excellent thermal and dimensional stability, resistance to micro-cracks, low moisture absorption, and low dielectric loss. Though the brittle nature of CEs curtails their effective utilization, thermoplastic toughening has paved the way to circumvent their innate brittle attribute by virtue of the resulting two-phase morphology. This Review enumerates detailed deliberation on thermoplastic toughening of CEs and their semi-interpenetrating networks. Further, the effects of various decisive variables like thermoplastic concentration, molecular weight, and curing conditions are also reviewed and disserted in detail. In addition, the mechanical properties of numerous developed CE blends and their toughening mechanism are deliberated to elucidate their substantial engineering applications. This Review renders a detailed contemplation on thermoplastic toughening of CEs, composite fabrication methodology, and their structural integrity for high-temperature applications.

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“…At this point, it is important to comment that actual space composite systems are based in cyanate-ester resins. Cyanate-ester resins have as their main advantage a high glass transition temperature (Tg = 400 • C), low dielectric constant, thermal stability and low flammability, which makes it an excellent candidate for electronic and spatial applications [16]. Nonetheless, the cost of cyanate-ester resin is more than 6 times (2000 USD/gal) [17] compared with a low flammable FAR 25 [18] certified epoxy resin (300 USD/gal) [19].…”

Section: Introductionmentioning

confidence: 99%

Thermal Numerical Analysis of the Primary Composite Structure of a CubeSat

Piedra

Torres

Ledesma³

2019

Aerospace

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A thermal computational analysis for the composite structure of a CubeSat is presented. The main purpose of this investigation is to study the thermal performance of carbon fibre/epoxy resin composite materials with Zinc Oxide nanoparticles in order to be used in the panels of the primary structure of a CubeSat. The radiative heat fluxes over each composite panel are computed according to the orbit trajectory and they are utilized as boundary conditions for the analysis. The direct solar, albedo and Earth infrared radiation fluxes are considered in this study. The model implementation, including the computation of the orthotropic thermal conductivity of the composite material is presented. The thermal simulations were performed for three different orbit inclination angles: the selected mission ( β = 57 ∘ ), the worst hot ( β = 90 ∘ ) and the worst cold ( β = 0 ∘ ). The temperature ranges in the electronic boards are analyzed in order to show that are into the operating limits of each electronic component.

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Cyanate Esters

Cited by 12 publications

References 116 publications

Radar Transparent, Impact-Resistant, and High-Temperature Capable Radome Composites Using Polyetherimide-Toughened Cyanate Ester Resins for High-Speed Aircrafts through Resin Film Infusion

Radar Transparent, Impact-Resistant, and High-Temperature Capable Radome Composites Using Polyetherimide-Toughened Cyanate Ester Resins for High-Speed Aircrafts through Resin Film Infusion

Thermoplastic-Toughened High-Temperature Cyanate Esters and Their Application in Advanced Composites

Thermal Numerical Analysis of the Primary Composite Structure of a CubeSat

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