COMPRESSION-SET BEHAVIOR OF IRRADIATED SILICONE ELASTOMERS

Abstract

The effect of nuclear radiation (five different dose levels in the range of from 10 to the 8th power to 10 to the 10th power ergs/gm(C)) on the compression-set behavior of three types of silicone elastomers (SE-551, SE-361, and DC-675) was examined. During the irradiation, the samples were compressed at constant strain in an air environment. The observed postirradiation percent compression set after an accumulated dose is described by an empirically derived equation. The ratio of the number of network chains at equilibrium with the unstrained thickness to the number of network chains at equilibrium with the applied strain rapidly decreases with dose. The Shore-A hardness of these elastomers was observed to increase with dose. Within the dose region investigated, the hardness attained after an accumulated dose can be expressed by an empirically derived equation.

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Document Details

Document Type
Technical Report
Publication Date
May 15, 1963
Accession Number
AD0406689

Entities

People

  • E. G. Fritz
  • P. M. Johnn

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Dermatologic Agents
  • Dose Rate
  • Dosimeters
  • Elastomers
  • Equations
  • Experimental Data
  • Fatty Acids
  • Gamma Rays
  • Materials
  • Nuclear Radiation
  • Nuclear Reactors
  • Polymers
  • Radiation
  • Radiation Effects
  • Research Facilities
  • Stearic Acid
  • Test Reactors

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Nuclear and Radiation Engineering.
  • Polymer Science and Engineering.