摘要
应用复合材料细观力学理论和相应分析模型,预测了聚丙烯/聚苯乙烯(PP/PS)共混体系的弹性模量并进行相应的试验研究。系统研究了非相容PP/PS共混物的体积含量和共混时间对共混物形态和弹性模量的影响,分析了细观形态与宏观力学性能间的关系。对PP/PS共混物的拉伸实验结果表明:微观力学模型在模量预报上是可行的,其中Mori-Tanaka法更有效,因为与半经验模型(如Halpin-Tsai法和改进的混合模型)相比,它没有试验参数,在材料设计时具有更大的优越性。
The elastic modulus of polypropylene/polystyrene (PP/PS) blend was predicted by means of meso-mechanics of composite materials. Based upon the systematical studies of the effects of composition and mixing time on the elastic modulus and morphology of immiscible blends PP/PS, the relation of microscopic morphology and macroscopic mechanical property was discussed. Tensile tests showed that the meso-mechanical models were valid for the prediction of elastic modulus and the Mori-Tanaka model would be a more effective method for designing materials in comparison with other models such as Halpin-Tsai model and modified mixture model because there is no restriction on the experimental parameters.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2003年第2期100-105,共6页
Acta Materiae Compositae Sinica
基金
国家自然科学基金重点项目(59733070)
关键词
形态
力学特性
非相容的共混物
细观力学
Composite materials
Elastic moduli
Mechanical properties
Morphology
Tensile testing
