高分子材料应力－时间等效性的考察

Study on the Equivalency Between Stress and Time of Polymer Materials

高分子材料在开发应用过程中常常会涉及到温度场，应力场对制品物理－机械性能的影响等问题．其中有关时－温等效性的问题作者已作过详细的讨论，但应力－时间等效性问题尚未见报导．现从时温等效原理出发，通过表观活化能与外场应力关系，推导出高分子材料应力－时间等效关系式，并运用这一等效关系导出应力松弛、蠕变、体积松弛等关系式．

Environmental faetors such as temperature and stress etc. hare strong effects on physicalmechanical properties and processed function of polymer materials. the problem about the cquivalency between time and temperalure has been discussed. In this paper, the equivalency between strees and time and its. relation equation will be studied by the equivalcncy between time and temperature and relation between apparent activation energy and stress. Many empirical equations often used in polymer sciences and engineering will be inferred by the relation between apparent activation energy and time.