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Showing 1 to 15 of 15 for “"cyanate ester"”.
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Processing of toughened cyanate ester matrix composites
… the feasibility of recently developed toughened cyanate ester networks as candidate materials for high performance composite matrix applications. The resin investigated was a Bisphenol-A cyanate ester toughened with hydroxy functionalized phenolphthalein based amorphous poly(arylene ether …
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Toughening of cyanate ester networks with reactive thermoplastic modifiers
Cyanate ester or triazine networks are attaining increasing importance as potential candidates for high temperature adhesives and composite matrices. Low toughness is a major drawback with most crosslinked thermosetting materials, including the cyanate ester networks. Considerable attention has …
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Synthesis and characterization of heterocyclic polymers: polybenzoxazoles and cyanate ester networks
… The second portion of the thesis focused on cyanate ester or polycyanurate networks generated from dicyanate monomers. The influence of electron withdrawing and donating groups on the behavior of the network forming curing process was investigated. It was demonstrated that electron …
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High-Temperature Performance of Carbon Fiber Reinforced Cyanate Ester Composites Filled with Nano-Ceramics
… carbon fabric reinforced nano-ceramics modified cyanate ester composite material is fabricated for the field of high temperature applications. The effect of using nano-ceramics as a filler element in the cyanate ester resin will be evaluated. High temperature materials play a vital role in the …
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Analysis of Cyanate Ester Resins and Graphite Fabric for Use in Resin Film Infusion Processing
… of this investigation was to characterize two cyanate ester resins and a eight harness satin (8HS) graphite fabric for use in resin film infusion (RFI) processing. Two cyanate ester resin systems were characterized to determine their cure-kinetics, and viscosities during cure. A 8HS graphite …
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Development of Bismaleimide/Cyanate Ester Based Aerospace Polymers for Possible Use in NASA's Relaunchable Vehicles Program
… polymer. Because of this gap, bismaleimides and cyanate esters, and possibly combinations of the two, are seen as having potential in applications where ease of processing characteristic of epoxies is desired, but for which temperature resilience better than that of epoxies is desired. In this …
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Examination of the Aging Properties of Novel Cyanate Ester Thermosets and the Subsequent Evaluation of the Material under Application Conditions
Cyanate ester thermosetting resins are a novel family of materials for high technology and aerospace applications. The high glass transition temperatures available from cured cyanate ester networks and subsequently, their resistances to corrosive materials make these resins attractive for harsh …
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Modelling of the degradation of mechanical properties of glass fiber reinforced composites (GFRP) due to environmental aging
… plenum is constructed, namely glass reinforced cyanate ester composite. Based on an extensive experimental work for the study of the hydrothermal ageing of glass reinforced cyanate ester composite at different temperature, the collected data was used for the development of an application, …
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The effects of process parameters on the properties of resin transfer molded composites
… sized and unsized plain weave fabrics. Vinyl ester, epoxy, and cyanate ester resins were pressure injected into these fabrics. The epoxy panels were processed with varying injection temperatures and pressures. A density-based technique was used to measure the fiber volume fraction and void …
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Production of Functionally Gradient Materials Using Model Thermosetting Systems Cured in a Thermal Gradient
… following cure in the gradient temperature mold. Cyanate ester materials were modified with hydroxyl-terminated butadiene-acrylonitrile copolymers as well as low Tg amorphous polyesters. The polyesters showed very desirable properties for a toughener, including relatively good thermo-oxidative …
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Synthesis and characterization of poly(arylene ether)s containing phosphorus, sulfur and heterocyclic pendant moieties
… use in reactive toughening modified epoxy and cyanate ester networks and these results are briefly summarized. Model studies using HPLC were also conducted to determine reaction kinetics in nucleophilic poly(arylene ether) formation. The results demonstrate that potassium carbonate mediated …
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Evaluation of plasma sprayed coatings as surface pretreatments for adhesive bonding
… Polymer powders included an epoxy, a polyester, a bismaleimide/cyanate ester mixture, and a bismaleimide/LARC TPI 1500 mixture. Inorganic powders, Al₂O₃, AIPO₄, MgO, and SiO₂ were sprayed on aluminum adherends, and TiO₂, TiSi₂, MgO, and SiO₂ were sprayed on titanium adherends. Inorganic …
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The Effect of Long-Term Thermal Cycling on the Microcracking Behavior and Dimensional Stability of Composite Materials
… Amoco's ERL1962 toughened epoxy, and YLA's RS3 cyanate ester. The lamination sequences of the materials considered include a cross-ply configuration, [0/90]2s, and two quasi-isotropic configurations, [0/+45/-45/90]s and [0/+45/90/-45]s. The layer thickness of the materials range from a nominal …
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Adhesion of novel high performance polymers to carbon fibers: fiber surface treatment, characterization, and microbond single fiber pull-out test
… a phosphorus-containing bismaleimide, a cyanate ester resin, and a pyridine-containing thermoplastic, was evaluated using the microbond single fiber pull-out test. The objective was to determine the chemical and mechanical properties of the fiber and the polymer which affect the …
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The effect of environmental aging/exposure on the durability of high performance polymeric composites
… Fiberite 954-2 (a thermoplastic toughened cyanate ester resin) and its graphite-reinforced composites, and Fiberite ITX (a semicrystalline thermoplastic resin) and its graphite fiber-reinforced composites (IM8/ITX) were used in the study. These material systems were under consideration for …