CMC integration and demonstration for gas turbine engines (CINDERS)

Barnard, Paul; Henderson, M; Rhodes, Nicholas P.

doi:10.1016/j.applthermaleng.2003.11.019

Cited by 16 publications

(11 citation statements)

References 5 publications

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“…Thermal protection systems (TPSs) find numerous applications in various engineering fields, including hypersonic entry/reentry vehicles, rocket engine nozzles, and rocket combustion chambers. 1 –3 Phenolic resins (PRs) are the preferred ablative materials for the TPS applications due to their high flame retardancy, thermooxidative resistance, and antineutron radiation. 4 –7 However, the application of PR is often impeded by some of their inherent qualities, such as brittleness, large volumetric shrinkage during processing, and low char yield at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Novel cardanol-containing boron-modified phenolic resin composites

Wang

Zhang

Liu

et al. 2016

High Performance Polymers

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To improve the thermal stability of phenolic resin and develop functional sustainable adhesive, a thermal-resistant cardanol-containing boron–phenolic resin (CBPR) was prepared by copolymerizing salicyl alcohol, cardanol, and boric acid. The structure of CBPR was characterized by Fourier transform infrared spectroscopy. Thermal stability of the investigated composites was estimated using thermogravimetric analysis (TGA). The results of TGA indicated that the modified resin exhibited excellent thermal stability. Specifically, the B-0.2 thermoset had a char yield of 69% when the boron content was only 1.27 wt%. The curing kinetic behavior was well described by differential scanning calorimetry and model-free kinetic analysis. Further, CBPRs, nano-aluminum oxide powders, glass powders with low melting point, and vitreous silica fibers were used as resin matrix, filler, forming additive, and reinforced material, respectively, to produce a novel ceramizable phenolic molding composite. The ablative characteristics of the co-cured blends were explored in terms of linear/mass ablation rate and microscopic pattern of ablation via the oxyacetylene torch tests. After thermal treatment, the formation and growth of the ceramic phase enhanced the thermal stability and ablation performance of the composites at high-temperature region. The morphology and phase composition of the residual chars were studied by scanning electron microscopy and energy dispersive spectroscopy, respectively. The linear and mass ablation rates for the modified composites decreased obviously in comparison with those of the unmodified composites, indicating that the modified composites possessed enhanced thermal stability and ablation property.

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Section: Introductionmentioning

confidence: 99%

Novel cardanol-containing boron-modified phenolic resin composites

Wang

Zhang

Liu

et al. 2016

High Performance Polymers

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show abstract

“…Thermal protection systems (TPS) find numerous applications in various engineering fields, including hypersonic entry/reentry vehicles, rocket engine nozzles, and rocket combustion chambers. [1][2][3] Phenolic resins (PR) are the preferred ablative materials for the TPS applications due to their high flame retardancy, thermo-oxidative resistance, and antineutron radiation. [4][5][6][7] However, the application of PR is often impeded by some of their inherent qualities, such as brittleness, large volumetric shrinkage during processing, and low char yield at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior of phenolic-based ceramizable composites modified by nano-aluminum oxide

Wang

Zhang

Qin

et al. 2016

High Performance Polymers

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A novel ceramizable organic composite was prepared by compression molding using silicone-modified phenolic resin (PR) as the matrix, nano-aluminum oxide powder as the filler, glass powder with low melting point as the forming additive, and vitreous silica fiber as the reinforced material. The ablative characteristics were explored in terms of linear/mass ablation rate and microscopic pattern of ablation via the oxyacetylene torch tests. Thermal stability of the investigated composites was estimated by means of thermogravimetric analysis. The final charring yields after pyrolysis increased from 63% to 69% and 74%, respectively. The silicone-modified PR acted as cross-linking adhesive at low-temperature region and tended to convert to bonding layer at high-temperature region. The formation and growth of the ceramic phase after thermal treatment enhanced the thermal stability and ablation performance of the composites at high-temperature region. The morphology and phase composition of the residual chars were studied by scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction, respectively. The test results revealed that the modified composite possessed excellent thermal stability and ablation property.

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“…Due to their excellent mechanical properties, low density, and thermal stability, ceramic matrix composites (CMCs) composed of SiC fibers with SiC matrices (SiC f /SiC) have been investigated for use at temperatures where conventional superalloys would fail (1000-1400°C). [1][2][3][4][5] These compositions possess an inherent oxidation protection due to the fact that SiC will form a passivating SiO 2 layer in oxidizing environments to slow further degradation. However, at temperatures above 1600°C, the passivating layer can be compromised due to melting accompanied by flow of the SiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Oxidation of SiC_f/SiC‐HfB₂ Composites under Laser Heating

Carney

Leslie

Jones

2015

Int J Applied Ceramic Tech

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Ceramic matrix composites with Sylramic TM and CG Nicalon TM SiC fibers and SiC-HfB 2 matrices derived from a combination of polymer-derived SiC ceramic and HfB 2 particulate slurries were prepared. The composites were tested for oxidation resistance by laser heating at 2 MW/m 2 to achieve temperatures near 1600°C. The oxidation resistance was compared between uncoated CG Nicalon TM and BN-coated Sylramic TM fiber-based composites. Oxidation resulted in precipitated nano-sized HfO 2 independent of the fibers and fiber coatings.

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CMC integration and demonstration for gas turbine engines (CINDERS)

Cited by 16 publications

References 5 publications

Novel cardanol-containing boron-modified phenolic resin composites

Novel cardanol-containing boron-modified phenolic resin composites

Thermal behavior of phenolic-based ceramizable composites modified by nano-aluminum oxide

Oxidation of SiC_f/SiC‐HfB₂ Composites under Laser Heating

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CMC integration and demonstration for gas turbine engines (CINDERS)

Cited by 16 publications

References 5 publications

Novel cardanol-containing boron-modified phenolic resin composites

Novel cardanol-containing boron-modified phenolic resin composites

Thermal behavior of phenolic-based ceramizable composites modified by nano-aluminum oxide

Oxidation of SiCf/SiC‐HfB2 Composites under Laser Heating

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Product

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Oxidation of SiC_f/SiC‐HfB₂ Composites under Laser Heating