热塑性聚合物复合材料蠕变性能的综述

热塑性聚合物复合材料(TPCs)由于其力学性能优异、产量巨大,并具有价格优势,已被作为重要的结构材料得到了广泛的应用.然而,由于聚合物的粘弹本性,其不可避免地会在外力的作用下产生随着时间延长而增加的形变,即蠕变.这种作用将对材料造成永久形变以及不可恢复的破坏,从而限制材料的应用.本文通过对TPCs蠕变的研究综述,详细探讨了TPCs蠕变的机理特征,分析了各类因素(诸如分子结构、填料、应力、温度等)对TPCs蠕变作用的影响规律.在此基础上,简明扼要的分析并提出了有助于获得抗蠕变性能优异的TPCs的方法.

A Review on Creep of Thermoplastic Polymer Composites

Thermoplastic polymer composites (TPCs) have been widely applied as structural materials due to their superior mechanical properties and prolific besides their low costs.On the basis of the nature of viscoelasticity,the deformation of TPCs will inevitably increase with time extension under a constant stress.This phenomenon is called creep,which is followed by irrecoverable damages such as permanent deformation and fracture.Thus,creep can seriously decrease the durability of TPCs and limit their applications.This review discusses the essence and mechanism of creep on TPCs in detail.More importantly,the influencing rules of various factors,such as the molecular structure,fillers,stress,and temperature,and so on,on creep and properties of TPCs are analyzed and summarized.Based on these rules,the negative effect of creep can be controlled reasonably.This review also suggests a suitable methodology for obtaining TPCs with high creep resistance concisely.This is of great theoretical and practical value to fabricate materials with excellent comprehensive properties and achieve the application of them and their products.