| 摘要 |
PURPOSE:To reduce the weight loss of thermally expandable graphite by oxidation combustion at the time of working at high temp. and to enhance the yield of products by incorporating a prescribed alkaline earth metal compd. into the graphite. CONSTITUTION:This thermally expandable graphite is formed by incorporating an alkaline earth metal compd. into graphite provided with thermal expandability by acid treatment. The alkaline earth metal compd. is selected among oxides, hydroxides, inorg. acid salts and org. acid salts of alkaline earth metals. This thermally expandable graphite causes a small weight loss by oxidation combustion at the time of expansion at high temp. and enhances the yield of products. |
