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Study on visco-elastic behaviors on cabon fiber reinforced thermoplastic resin

碳纤维增强热塑性树脂粘弹性行为研究

基本信息

批准号：
06650764
负责人：
SOMIYA Satoshi
金额：
$ 1.22万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

The fiber volume and crystallization dependence of creep behaviors have been studied on carcon fiber reinforced thermoplastic resin to develop high heat resistance mateirals. It is well known that the viscoelastic behabvior of composites of the resin matrix mainly depends on viscoelasticitiy of the matrix resin. But the effect of composed fibers on creep behavior of FRP and of the crystallization of mafrix resin have been discussed a little.The materials used were short carbon fiber reinforced theimoplastic polyimide tesin (CFRTP). The fiber volume fraction of CFRTP are 0,3.7,6.7 and 15.6%. The creep compliance valus has measured with three point bending test method in hot air oven.In this report, the relationship between fiber volume fraction and creep behavior and the relationship between crystallinity and creep phenomena have been researched and discussed. On all specimen having the same fiber volume fraction and no-crystallinity, it was recongnized that all creep compliance curve could be drown as one master curve on creep compliance. It means that this material shows a linear viscoelastic behavior that is an Arrhenius type. Further more, using 2 shift factors, for all master curves for all fiber volume fraction' materials, we could get only one master curve from all master curves using 2 new shift factor for the amount of fiber volume fractions.Next, we fried that the discussion of the linearity of crystallized CFRTP of this resin. We used 2 kinds of crystallinity such as 14% (weight parents) and 31%. For materials of the same crystallinity and the same fiber volume fraction' material, we could get only one master curve of all master curves. From these results, if there are one master curve of arbitary fiber volume fraction's material and 2 kind of shift factor's curve for all fiber volume fraction and all crystallinity, we can calculate all moster curve on all material.

为研制高耐热材料，研究了碳纤维增强热塑性树脂的纤维体积和结晶行为对蠕变行为的影响。众所周知，树脂基复合材料的粘弹性能主要取决于基质树脂的粘弹性。但复合纤维对玻璃钢蠕变行为和树脂结晶行为的影响却鲜有讨论。材料为短碳纤维增强聚酰亚胺树脂(CFRTP)。CFRTP的纤维体积分数分别为0、3.7、6.7和15.6%。用三点弯曲试验法测定了纤维在热风炉中的蠕变柔量，对纤维体积分数与蠕变行为的关系以及结晶度与蠕变现象的关系进行了研究和讨论。在纤维体积分数和无结晶度相同的试件上，所有的蠕变柔度曲线都可以归结为一条蠕变柔度主曲线。这意味着这种材料表现出一种线性粘弹性行为，即Arrhenius类型。此外，对于所有纤维体积分数材料的所有主曲线，使用2个新的移动因子，对于所有纤维体积分数的所有主曲线，可以只得到一条主曲线。我们使用了两种结晶度，如14%(重量亲本)和31%。对于相同结晶度和相同纤维体积分数的材料，所有主曲线只能得到一条主曲线。根据这些结果，如果任意纤维体积分数的材料有一条主曲线，所有纤维体积分数和结晶度都有两种位移因子曲线，我们就可以计算出所有材料的莫斯特曲线。