【摘要】 根据聚丁二烯的在其玻璃化转变Ｔ８≈１７８Ｋ附近的比热，研究其在弛豫过程中释放能量△Ｑ随其物理老化时间Ｔｗ的关系，发现△Ｑ（ｔｗ）满足Ｋｏｈｌｒａｕｓｃｈ—Ｗｉｌｌｉａｍｓ—Ｗａｔｔａ关系：其中Ｑ０＝２．３１Ｊ·ｇ－１；τ＝９３ｍｉｎ；β＝０．６０．同时结合聚丁二烯的微观结构用分维时间模型解释了实验结果．更多还原

【Abstract】 The relationship between the released energy △Q of polybutedien in the relaxation process during its physical aging procedure and the aging time tw is investigated according to its specific heat around the glass transition temperature T8≈ 178K. It is found that △Q(tw) can be described by Kohlrausch - Williams - Watts law with Q0=2.31J.g-1, τ=93min, β=0.60. Fractal time model is utilized to explain the experimental results according to the microscopic structure of polybutadien.更多还原