ELASTOMERS AND PLASTICS Effect of Gamma Ray Pre-Irradiation on Thermogravimetric Analysis of Tetrafluoroethylene-Propylene Elastomer

The changes of the thermal stability by gamma ray pre-irradiation on tetrafluoro ethylene-propylene elastomer was studied by the measurement of the weight change. The weight decrease curves by thermal aging at constant temperatures were straight line.

The severe accident in Fukushima Daiichi Nuclear Power Station at 11 March 2011 brought about the degradation on the materials in containment vessel of nuclear power plant by heat and radiation. Electric wire and cable in the container vessel were damaged in the early stage of the accident. This severer accident insisted that the safety level of various equipment used in nuclear plant had to be improved.