研究了160℃不同热氧老化时间对阻燃型长玻纤增强尼龙6 (FR/PA6/LGF)复合材料的静、动态力学性能及降解行为的影响.热与氧对FR/PA6/LGF复合材料的影响通过差示量热分析、动态力学性能分析、扫描电镜及力学性能表征.结果表明,虽然由动态力学性能分析可知热氧老化使得树脂基体分子链的刚性增加,但最终基体分子链断裂、降解导致老化试样表面出现的凹坑、微裂纹和脱粘在老化进程中占据了主导地位.利用Ozawa法求出了不同老化时间处理后FR/PA6/LGF热氧降解反应的活化能,结果表明热氧老化降低了阻燃材料的热稳定性,影响了其在不同燃烧区的阻燃效率.
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