Development of FRTP having high heat resistance and long term durability using Physical aging treatment

当塑料及其纤维增强复合材料用作工程材料时，必须考虑其工业废弃物的处置对环境条件的影响。解决这一问题的办法是生产长寿命材料和开发长寿命材料的回收方法。在本研究中，提出了延长材料寿命的方法。本研究采用热塑性塑料及其纤维增强复合材料。对延伸率影响最大的是粘弹性变形。试图从增强材料的组成和树脂基质的物理老化处理两个方面来阻止这种行为。所用材料为PES、PPE、PC、PEEK和PI，以及它们的树脂及其玻璃钢。在一定温度条件下进行了弯曲蠕变试验。在每个FRTP上，可以绘制蠕变柔量的主曲线，并且试验温度的移动系数在Arrhenius型图上显示为一条直线。从这些事实中可以看出，FRP表现为线性粘弹性行为。从这些结果可以看出，聚合物的粘弹性随补强材料用量的增加而降低。利用这些结果，利用粘弹性各因素之间的关系，指出了FRP最佳纤维体积分数的材料设计能力。其次，研究了物理时效处理对每种FRP材料蠕变变形的影响。通过这种处理，增加了模数，并阻止了蠕变现象的发展。研究还发现，这些变化量与热处理时间和温度有关。如果进行了成分和适当的时效处理，蠕变现象在蠕变时间尺度上出现的时间晚了三位数。关于这项研究的这13份报告如下，并将提交。

When plastics and its fiber reinforced composites were used as engineering materials, the effect of the disposition of industrial wastes of them on the environmental condition must be considered. The resolves on this problem were the production of long life material and the development of the recycle method for them. In this research, the method for the elongation of material life was developed. Thermoplastics and its fiber-reinforced composites were used in this study. The most effective obstruction of the elongation was the visco-elastic deformation. The composition of reinforcements and physical aging treatment of resin matrix were tried to arrest this behavior. Used materials were PES, PPE, PC, PEEK and PI and also FRP of them resin and their FRPs.The bending creep test has been done under some temperature conditions. On each FRTP, it was found that the master curve of creep compliance can be drawn and the shift factor for test temperature showed a straight line on Arrhenius type graph. From these facts, it was recognized an FRP showed the linear visco-elastic behavior. And from these results, the visco-elasticity of polymers was decreased by the amount of reinforcements. The ability of material design of the best fiber volume fraction of FRP was pointed out using this relationship between some factor for viscoelasticity using these results. Next, the effect of physical aging treatment on creep deformation was researched on each FRP. From this treatment, Modulus was increased and the development of creep phenomena was arrested. And also it was found that these amounts of changes were depended on the time and temperature of the heat treatment. If the composition and suitable aging treatment has been done, the creep phenomenon come late on a number of three figure on the creep time scale. These 13 reports on this research were as follows and will be presented.