High Temperature Elastomers for Extreme Aerospace Environments

1966 ◽  
Vol 39 (4) ◽  
pp. 1141-1160 ◽  
Author(s):  
J. K. Sieron
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Carbon Black ◽  
High Strength ◽  
Magnesium Silicate ◽  
Engineering Properties ◽  
Elastomeric Materials ◽  
And Performance ◽  
High Temperature Tensile ◽  
High Structure

Abstract To meet the ever increasing environmental requirements imposed on sub-system components of advanced aerospace weapons systems, a comprehensive project to develop high strength, high temperature resistant elastomeric materials has been pursued. To attain this goal, research on reinforcement, stabilization, and crosslinking systems for butyl, ethylene propylene terpolymer, and fluoroelastomers was carried out. Results obtained in earlier work with the hydrocarbon elastomers disclosed that fine-particle-size, high-structure carbon black provided excellent tensile properties at high temperatures. Further work on stabilization systems resulted in the discovery that stannous oxide was effective for phenolic-resin-cured butyl at temperatures up to 500° F. For EPT, vulcanization-stabilization systems which provided a threefold improvement in useful life of this elastomer at temperatures in the range 300° F to 500° F were elucidated. Preliminary studies on fluoroelastomer reinforcement led to the finding that properly dispersed carbon fiber imparted not only better high temperature tensile strength, but also improved life at temperatures up to 600° F. In the present work, fibrous magnesium silicate, a material which normally would be used for dusting uncured rubber or as a paint filler, was found to be an effective reinforcing material for fluoroelastomers. Vulcanizates prepared with an acicular-platy form of this material have tensile strength at 400° F which is 80% greater than that with commonly used medium thermal carbon black. Hot tear strengths with even greater improvements were also realized, and as an added bonus, resistance to deterioration over a temperature range of 600° F to 700° F was also noteworthy. Primary implication of this work lies in renewed awareness that elastomeric vulcanizates are composite materials. Reinforcing materials as well as other additives are very influential in determining the engineering properties and performance of elastomers.

ATI 6-2-4-2

Alloy Digest ◽  
2020 ◽  
Vol 69 (8) ◽  
Keyword(s):  
Tensile Strength ◽  
Titanium Alloy ◽  
High Temperature ◽  
Creep Strength ◽  
High Strength ◽  
Heat Treating ◽  
Good Combination ◽  
Long Term Stability ◽  
Temperature Performance

Abstract ATI 6-2-4-2 is a near-alpha, high strength, titanium alloy that exhibits a good combination of tensile strength, creep strength, toughness, and long-term stability at temperatures up to 425 °C (800 °F). Silicon up to 0.1% frequently is added to improve the creep resistance of the alloy. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ti-169. Producer or Source: ATI.

The High-Temperature Tensile Test of Quartz Fiber Fabric- Reinforced Resin Composites

2021 ◽  
Vol 904 ◽  
pp. 188-195
Author(s):  
Hua Qiong Wang ◽  
Li Li Zhang ◽  
Da Cheng Jiao ◽  
Yan Ru Wang ◽  
Zeng Hua Gao
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Tensile Test ◽  
Tensile Properties ◽  
Tensile Modulus ◽  
National Standard ◽  
Resin Composites ◽  
Quartz Fiber ◽  
High Temperature Tensile ◽  
Fiber Fabric

The tensile properties of quartz fiber fabric-reinforced resin composites at high temperature were studied. The effects of specimen type and dimension, temperature loading procedure, holding time and loading rate on the tensile properties of the composites at high temperatures were analyzed through series of comparative experiments, the tensile test parameters were determined. Chinese national standard for high-temperature tensile property testing of the composites was compiled based on the data collected. According to the established standard, the tensile testing at 500°C was carried out. Compared with the tensile properties at room temperature, the tensile strength and tensile modulus of the composite at high temperature decreases significantly, with the tensile strength decreasing by about 42.32% and the tensile modulus decreasing by about 24.18%. This is mainly due to the high temperature which causes part of the resin matrix to pyrolyze and detach from around the fiber, thus losing the integrity of the material. In addition, this national standard for high-temperature tensile properties has some general applicability to different types of fiber-reinforced resin composites.

Comparative investigation of high-temperature tensile strength of zirconia concretes

Refractories ◽  
1990 ◽  
Vol 31 (7-8) ◽  
pp. 446-448
Author(s):  
O. V. Bakunov ◽  
L. B. Borovkova ◽  
T. A. Melekhina ◽  
E. P. Pakhomov
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Comparative Investigation ◽  
High Temperature Tensile

Simulation Research on Process Adaptability of Alloy Structural Steel 50Mn2V

2012 ◽  
Vol 573-574 ◽  
pp. 1178-1181
Author(s):  
Zhong Bo Dong ◽  
Han Xiong Dong ◽  
Xia Hong
Keyword(s):  
High Temperature ◽  
Tensile Test ◽  
Structural Steel ◽  
High Strength Steels ◽  
High Strength ◽  
Simulation Research ◽  
Deformation Test ◽  
High Temperature Tensile ◽  
Test Result

This paper analyzes the adaptability of process of alloy structural steel 50Mn2V by simulating research. Through the high temperature tensile test、the multi-pass deformation test we study the deforming resistance characteristics of 50Mn2V steel, and carry on the contrast with high strength steels P20（3Cr2Mo）of a factory; Through thermo-plasticity test the high temperature thermoplastic of 50Mn2V steel is studied. The test result indicates a factory has ability to produce the high strength 50Mn2V steel completely with present equipment.

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