A New Hydrocarbon Elastomer. II. Properties of an Ethylene-Propylene-Nonconjugated Diene Terpolymer

1962 ◽  
Vol 35 (4) ◽  
pp. 1126-1141 ◽  
Author(s):  
J. J. Verbanc ◽  
M. S. Fawcett ◽  
E. J. Goldberg
Keyword(s):  
Carbon Dioxide ◽  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Amorphous Polymer ◽  
Practical Significance ◽  
Prolonged Storage ◽  
Hydrocarbon Solvents ◽  
Chemical Agents ◽  
Thermal Data ◽  
General Appearance

Abstract A new hydrocarbon elastomer has been synthesized from petrochemical intermediates using coordination catalysis. This amorphous polymer resembles commercial diene elastomers in general appearance, is completely soluble in hydrocarbon and chlorinated hydrocarbon solvents, and is stable to prolonged storage. It can be vulcanized effectively by the use of accelerated sulfur systems and reinforced by numerous fillers such as carbon blacks, clays, and certain silicas. Reinforced vulcanizates are strong, resilient, and extremely resistant to oxygen, ozone, heat, light, and many chemical agents. Properly compounded vulcanizates exhibit excellent electrical and low temperature properties. Permeability to gases, specifically nitrogen, oxygen, and carbon dioxide, parallels natural rubber. Thermal diffusivity and thermal conductivity are ∼15% greater than polyisoprene. The practical significance of the thermal data remains to be determined.

Thermal Characterization of Carbon-Carbon Composites

2011 ◽  
Author(s):  
Messiha Saad ◽  
Darryl Baker ◽  
Rhys Reaves
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Thermal Diffusivity ◽  
Specific Heat ◽  
Critical Role ◽  
Carbon Composite ◽  
Flash Method ◽  
Carbon Composites ◽  
Energy Storage Devices ◽  
Graphitized Carbon

Thermal properties of materials such as specific heat, thermal diffusivity, and thermal conductivity are very important in the engineering design process and analysis of aerospace vehicles as well as space systems. These properties are also important in power generation, transportation, and energy storage devices including fuel cells and solar cells. Thermal conductivity plays a critical role in the performance of materials in high temperature applications. Thermal conductivity is the property that determines the working temperature levels of the material, and it is an important parameter in problems involving heat transfer and thermal structures. The objective of this research is to develop thermal properties data base for carbon-carbon and graphitized carbon-carbon composite materials. The carbon-carbon composites tested were produced by the Resin Transfer Molding (RTM) process using T300 2-D carbon fabric and Primaset PT-30 cyanate ester. The graphitized carbon-carbon composite was heat treated to 2500°C. The flash method was used to measure the thermal diffusivity of the materials; this method is based on America Society for Testing and Materials, ASTM E1461 standard. In addition, the differential scanning calorimeter was used in accordance with the ASTM E1269 standard to determine the specific heat. The thermal conductivity was determined using the measured values of their thermal diffusivity, specific heat, and the density of the materials.

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