軟質エポキシの温度及びひずみ速度依存性評価とその応用

抄録

The purpose of the present study is developing a novel protective wear compatible with flexibility and impact absorption. In order to achieve the purpose, the soft epoxy foams, which shows extremely high strain rate dependency of compressive properties, was developed as a cushioning material of a protective wear. First, compression test revealed that the compressive stress at each strain can be expressed in a master carve with respected to strain-rate, temperature and compounding ratio of the matrix. Then, in order to evaluate the performance of the epoxy foam as a cushioning material of headwear, the falling impact test assuming a head impact in daily life was performed, measuring HIC. The impact tests suggested that the proposed epoxy foams are effective as a cushioning material of a headwear.