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介绍了利用一种新型的落重和高速摄影实验系统对三种常见的聚合物（ＰＣ，ＰＥＫ和ＰＥＥＫ）在高压应变率下的力学性质的研究结果。所使用的实验系统在常规落重装置的基础上，增加了高速摄影系统，实现了应力和应变过程的同时测量。从而使得在一次实验中可同时获得应力和应变数据，避免了这类实验中常用的变形过程中体积不变的假设，使得结果更加可靠，并可验证材料的泊松比。给出了上述三种聚合物在常温下的真应力与自然应变的关系。结果表明，在室温下，当应变率约为１０００ｓ－１时，这三种材料的屈服应力分别为１２８ＭＰａ，２０４ＭＰａ，和１８０ＭＰａ。三种材料均具有很好的冲击韧性，断裂应变均在５０％以上。对不同环境温度下，ＰＥＥＫ的实验结果表明，随温度的增加，屈服应力将下降。
The results of the study on the mechanical properties of three common polymers (PC, PEK and PEEK) at high compressive strain rates are introduced using a new type of drop weight and high speed photographic experimental system. The experimental system used has added a high-speed photographic system to the conventional weight reduction device, enabling the simultaneous measurement of stress and strain. As a result, stress and strain data can be obtained simultaneously in one experiment, and the assumption of constant volume in the deformation process commonly used in this kind of experiment is avoided. The result is more reliable and the Poisson’s ratio of the material can be verified. The relationship between true stress and natural strain of the above three polymers at normal temperature is given. The results show that at room temperature, when the strain rate is about 1000s-1, the yield stress of these three materials are 128MPa, 204MPa, and 180MPa respectively. All three materials have good impact toughness, fracture strain are above 50%. Experimental results of PEEK at different ambient temperatures show that the yield stress will decrease with increasing temperature.