The ultra-molecule of polyethylene glycols(PEG)has some extent phase change after heating and cooling cycles.The change of macroscopical properties leads to special thermal activity.

• 在对聚乙二醇(PEG)进行冷热循环处理时,其超分子结构会发生某种相的转变,从而改变宏观性质而具有特殊的蓄热调温性能。