Performance Comparison of Aerospace High-Temperature Resistant Ceramic Fiber Felt

2021 ◽  
Vol 1036 ◽  
pp. 168-174
Author(s):  
Jian Ye Guo ◽  
Li Jun Su ◽  
Chao Jun Wu ◽  
Wen Jing Li ◽  
Jie Ying Yang ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermal Insulation ◽  
Silica Fiber ◽  
Ceramic Fiber ◽  
Quartz Fiber ◽  
Temperature Resistance ◽  
Mullite Fiber ◽  
High Silica ◽  
Better Than ◽  
Resistant Ceramic

Be aimed at the development and application of aerospace high-temperature resistant ceramic fiber felt, in this paper, as the common ceramic fiber felt in the field of high temperature resistance, quartz fiber felt, high silica fiber felt and mullite fiber felt were compared. The microstructure, thermal insulation, temperature resistance and mechanical properties were analyzed respectively, the performance advantages and disadvantages of three kinds of ceramic fiber felt were given, and its internal causes were studied. The results show that, the temperature resistance of mullite fiber felt is better than that of quartz fiber felt and high silica fiber felt, mainly due to its polycrystalline mullite structure, the thermal insulation performance of mullite fiber felt and high silica fiber felt is better than quartz fiber felt at high temperature, mainly due to the thermal reflection of polycrystalline mullite and the small pore structure of high silica fiber felt, the compressibility of quartz fiber felt is better than high silica fiber felt and mullite fiber felt.

scholarly journals Preparation and Properties of SiBCO Aerogel and Its Composites

Nanomaterials ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 40 ◽  
Author(s):  
Xiafei Li ◽  
Junzong Feng ◽  
Jie Yin ◽  
Yonggang Jiang ◽  
Jian Feng
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Thermal Insulation ◽  
Phenylboronic Acid ◽  
Sol Gel ◽  
Nitrogen Adsorption ◽  
Supercritical Drying ◽  
Temperature Resistance ◽  
Mullite Fiber ◽  
Boron Source

To obtain new high-temperature resistant composites that can meet the requirements of aircraft development for thermal insulation and mechanical properties, SiBCO aerogel composites were prepared by sol-gel, supercritical drying and high-temperature pyrolysis with trimethyl borate (TMB) or phenylboronic acid (PBA) as the boron source and mullite fiber as reinforcement. The structure and composition of the SiBCO aerogel and its composites were characterized with SEM, FT-IR, ICP and nitrogen adsorption tests. The specific surface area of the SiBCO aerogel is 293.22 m2/g, and the pore size is concentrated in the range of 10–150 nm. The mechanical properties, the thermal insulation properties and the temperature resistance were also studied. Due to the introduction of boron, the temperature resistance of SiBCO aerogel composites is improved greatly, and the service temperature of composites reached 1773 K. When n (TMB)/n (TEOS) = 1/1, the temperature resistance of the composites is the best. After heating in air at 1773 K for 30 min, the shrinkage of SiBCO aerogel composites is only 2.45%, and the thermal conductivity of the composites is 0.138 W/(m·K) at 1773 K. In addition, the type and amount of catalyst also have certain effects on the mechanical properties and temperature resistance of the composites.

Study of Carbon Aerogel Composites for Thermal Protection Applications

2020 ◽  
Vol 845 ◽  
pp. 9-14
Author(s):  
Hui Guo ◽  
Li Jun Su ◽  
Wen Jing Li ◽  
Ying Min Zhao
Keyword(s):  
High Temperature ◽  
Pore Structure ◽  
Thermal Insulation ◽  
Thermal Protection ◽  
Carbon Aerogel ◽  
Inert Atmosphere ◽  
Condensation Polymerization ◽  
Temperature Resistance ◽  
High Temperature Resistance ◽  
Adsorption Desorption

Carbon aerogel composites have been prepared by condensation polymerization and high temperature pyrolysis. The morphology of carbon aerogel is characterized by SEM. The pore structure is characterized by N2 adsorption-desorption technique. The thermal insulation properties of carbon aerogel composites are tested. Carbon aerogel composites show good thermal insulation and high temperature resistance in inert atmosphere The results show that they are suitable for applications in aerospace thermal protection industry.

Thermal Stabilization of PVC Using Organic Modified Montmorillonite

2008 ◽  
Vol 55-57 ◽  
pp. 345-348
Author(s):  
Chanchai Thongpin ◽  
N. Tangchantra ◽  
Apisit Kositchaiyong ◽  
R. Sagnuanmoo ◽  
J. Jantham ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
High Temperature ◽  
Thermal Stabilization ◽  
Temperature Resistance ◽  
Heat Stabilizer ◽  
Modified Montmorillonite ◽  
Thermal Stability Of ◽  
Better Than ◽  
General Method

There has been a number of works trying to improve thermal stability of PVC as it is one of the most widely used plastics for various applications. The incorporation of heat stabilizer is a general method to stabilize PVC. However, its thermal stability could also be improved by blending with polyethylene. Organoclay, montmorillonite (MMT) in particular, has been found to improve thermal stability of polymers due to its high temperature resistance. This research is aimed to use organic modified MMT (OMMT) to improve thermal property of PVC. It was found from the research that organic grafted MMT (O-g-MMT) could improve thermal stability of PVC better than OMMT. The mechanical properties of O-g-MMT/PVC and OMMT/PVC of the blends were also reported

The Effect of Fiber on EPDM Inhibitor Material

2014 ◽  
Vol 1035 ◽  
pp. 118-121 ◽  
Author(s):  
Guo Hui Chen ◽  
Jun Tian ◽  
Chen Liu ◽  
Dong Li ◽  
Xiang Hui Lu
Keyword(s):  
Thermal Insulation ◽  
Ablation Rate ◽  
Aramid Fiber ◽  
Insulation Material ◽  
Insulation Layer ◽  
Ablation Resistance ◽  
Mullite Fiber ◽  
Result Show ◽  
High Silica ◽  
Different Content

In this paper, we studied the different content of aramid fiber, aramid pulp, carbon fiber, high silica fiber, mullite fiber, alumina fiber's effect on EPDM inhibitor material. The result show that aramid fiber can significantly improve the ablation resistance of thermal insulation layer, when the content of aramid fiber up to 6.7%,the inhibitor material's ablating rate get the minimum value 0.04mm/s. Aramid pulp can improve ablation resistance of thermal insulation layer, but its dispersion in insulation material is difficult. Others inorganic fiber can't lower the ablating rate as much as aramid fiber, it mainly because of the brittleness of inorganic fiber, during the dispersion process, most of fiber had been triturated, so those fiber can't decrease the liner ablation rate of the inhibitor.

Thermal Performance and Temperature Resistance of Straw-Geopolymer Composites

2015 ◽  
Vol 710 ◽  
pp. 15-18
Author(s):  
Man Tong Jin ◽  
Meng Yun Liao ◽  
Liang Chen ◽  
Zan Fang Jin
Keyword(s):  
Thermal Analysis ◽  
Compressive Strength ◽  
Thermal Properties ◽  
High Temperature ◽  
Thermal Insulation ◽  
Elevated Temperatures ◽  
Temperature Resistance ◽  
Optimum Range ◽  
Temperature Damage ◽  
Geopolymer Composites

This paper investigates the influence of high temperature on geopolymer reinforced by straw fibers from 25°C to 800 °C with a duration of 0 min, 30 min and 60 min, respectively. The effect of straw fiber content on the thermal properties and compressive strength have also been explored. It is found that the optimum range of straw fiber came to be 2-4 % with both excellent thermal insulation properties and a comparable compressive strength. The mechanical strength of the geopolymer with 3% straw fiber subjected to elevated temperatures show that the geopolymer composites possess significantly higher strength and better temperature resistance than the conventional thermal insulation materials. When exposure to 300 °C for 60 min, the specimen gives a satisfied result of 42.08 MPa. And the compressive strength drop is almost under 50% after exposure to 400 °C for 60 min. Thermal analysis is employed to explore the temperature damage.

URANUS 52N

Alloy Digest ◽  
1994 ◽  
Vol 43 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Flue Gas ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Flue Gas Desulfurization ◽  
Temperature Performance ◽  
Aisi Type ◽  
Better Than

Abstract URANUS 52N is a nitrogen-alloyed duplex stainless steel improved in stress-corrosion cracking resistance and with pitting and crevice corrosion resistance better than AISI Type 317L. Applications include handling phosphoric acid contaminated with chlorides and in flue gas desulfurization scrubbers. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-566. Producer or source: Creusot-Marrel.

scholarly journals Investigations of polyethylene of raised temperature resistance service performance using autoclave test under sour medium conditions

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 346-354
Author(s):  
Guoquan Qi ◽  
Hongxia Yan ◽  
Dongtao Qi ◽  
Houbu Li ◽  
Lushi Kong ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Mechanical Performance ◽  
Three Dimensional ◽  
Service Performance ◽  
Degree Of Branching ◽  
Temperature Resistance ◽  
Temperature Conditions ◽  
Dimensional Network ◽  
Gas Medium ◽  
Better Than

Abstract The chapter deals with the performance evaluation of the polyethylene of raised temperature resistance (PE-RT) and polyethylene (PE) using autoclave test under sour oil and gas medium conditions. The analyses of performance changes showed that PE-RT has good media resistance at 60°C. As the temperature increases, its mechanical properties decrease, accompanied by an increase in weight. Comparative analyses showed that no matter what temperature conditions are, PE-RT media resistance is better than PE80. The better media resistance of PE-RT depends on its higher degree of branching. Short branches are distributed between the crystals to form a connection between the crystals, thereby improving its heat resistance and stress under high-temperature conditions. PE-RT forms an excellent three-dimensional network structure through copolymerization, ensuring that it has better media resistance than PE80. However, the mechanical performance will be attenuated due to the high service temperature.

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