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加工工艺对n-HA/PA66复合材料结晶行为和力学性能的影响
引用本文:张翔,李玉宝,左奕,吕国玉. 加工工艺对n-HA/PA66复合材料结晶行为和力学性能的影响[J]. 复合材料学报, 2007, 24(3): 72-77
作者姓名:张翔  李玉宝  左奕  吕国玉
作者单位:四川大学,纳米生物材料研究中心,成都,610064;公安部四川消防研究所,都江堰,611830;四川大学,纳米生物材料研究中心,成都,610064
基金项目:国家重点基础研究发展计划(973计划)
摘    要:采用X射线衍射、差示量热分析和常规力学性能等测试方法研究了纳米羟基磷灰石增强聚酰胺66(n- HA/ PA66) 复合材料在不同加工条件和后处理工艺下的结晶行为和力学性能。结果表明, 提高样品的退火温度会降低纯PA66 及其复合材料中PA66 的结晶峰强度。在n- HA/ PA66 复合材料中, 基体树脂PA66 的α晶体中只有α2 的结晶峰存在,α1 的结晶峰基本消失。提高复合材料的注射压力, PA66 结晶峰的强度降低, 结晶度增加; 退火温度对材料的结晶度没有明显的影响。复合材料的结晶行为与其力学性能之间有着紧密的联系。 

关 键 词:n-HA/PA66  结晶行为  力学性能  注塑  退火
文章编号:1000-3851(2007)03-0072-06
收稿时间:2006-07-21
修稿时间:2006-07-212006-10-20

Effects of processing conditions on crystall ization behavior andmechanical properties of n-HA/ PA66 composites
ZHANG Xiang,LI Yubao,ZUO Yi,Lü Guoyu. Effects of processing conditions on crystall ization behavior andmechanical properties of n-HA/ PA66 composites[J]. Acta Materiae Compositae Sinica, 2007, 24(3): 72-77
Authors:ZHANG Xiang  LI Yubao  ZUO Yi  Lü Guoyu
Affiliation:1.Research Center for Nano-biomaterials, Sichuan University, Chengdu 610064, China;2.Sichuan Fire Research Institute of Minist ry of Public Security, Dujiangyan 611830, China
Abstract:The crystallization behavior of n-HA/ PA66 biocomposite at different processing pressures and annealingtemperatures was investigated by XRD and DSC. The result s show that the crystalline intensities of pure PA66 andit s composite decrease with the increase of the annealing temperature. For n-HA/ PA66 composites , the peaks ofα1crystals of PA66 disappear , only those ofα2 crystals exist , and with the increase of injection pressure and annealingtemperature , the crystalline intensity of PA66 decreases. The degree of crystallinity of PA66 in composites increaseswith the increase of the injection pressure ; however , the annealing temperature has no obvious effect s on the crystalline degree. The mechanical properties have a close relationship with the crystallization behavior of the materials.
Keywords:n-HA/PA66
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