一、引言 研究层压酚醛玻璃钢在静压下的P-V关系将为建立它的本构方程、研究复合材料在动、静压下的性能参数的差异或关联提供实验的依据,同时,在实用上也有一定的意义。 目前,研究多孔材料在静态高压下第一次压缩时的P-V关系的实验方法以及玻璃钢在高压下的状态方程的实验数据,在国外还未见报道。玻璃钢是一种多孔隙的复合材料。由于 I. INTRODUCTION Studying the PV relationship of laminated phenolic FRP under static pressure will provide experimental basis for establishing its constitutive equation and studying the difference or correlation of the performance parameters of composite under dynamic and static pressure. At the same time, There is also some significance. At present, experimental data on the P-V relationship of porous materials under the first compression under static high pressure and the experimental data of the state equation of FRP under high pressure have not been reported in foreign countries. FRP is a porous composite material. due to