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引言 复合材料应用,绝大部分是在户外大气环境下使用的。大气中含有一定的水份,当水分子进入复合材料后,可导致复合材料性能的可逆性和不可逆性下降变化。所谓可逆性变化,即复合材料吸湿之后,材料的物理性能暂时下降,如将水除去,性能又能恢复到原状。所谓不可逆的变化,即除去水份后,性能仍不会复
Introduction Composite applications, the vast majority of outdoor use in the atmospheric environment. The atmosphere contains a certain amount of water, when the water molecules into the composite material, can lead to reversible and irreversible decline in composite properties. The so-called reversible changes, that is, moisture absorption composite material, the physical properties of the material temporarily decreased, such as the water removed, the performance can be restored to its original state. The so-called irreversible change, that is, the removal of water, the performance will not be complicated