凹凸棒土改性PA6纤维的制备及其结构与性能研究

利用凹凸棒土（AT）的特殊结构对PA6进行改性以制得高附加值的AT/PA6纳米复合材料,利用红外光谱（FTIR）分析改性前后材料物化性能的变化;用扫描电镜（SEM）观察复合材料的相容性;用差热分析（DSC）和热失重测试（TG）研究改性对热稳定性能的影响;用X射线衍射（XRD）分析改性前后结晶度的变化以及用纤维力学性能测试对比改性前后的强度和弹性变化.测试表明,AT的加入不会改变PA6的原有性能,能提高PA6的结晶度,改变材料的力学性能;凹凸棒土含量的增加会影响其在PA6中的分布,当含量低于15%时能较好地分散在PA6基体中;含少量凹凸棒土的PA6共混材料能够提高材料的热稳定性能和耐热性.

A study of preparation and its structure and performance on attapulgite modified PA6 fibers

By using the special shape of attapulgite and modifying PA6,the high value-added the modified nylon 6 nano-composites is produced. FTIR was utilized to analyze the change of the material＇s physical and chemical performance before and after the modification. SEM is used to observe composite material compatibility. DSC and TG were used for studying the effect of modification on the thermal stability. X-ray diffraction（ XRD） is used to analyze the crystallinity changes before and after modification. And the strength of the fiber mechanical properties is tested to compare the strength and elasticity. FTIR and XRD test show that the addition of the AT does not change the original performance of PA6,and it can improve the crystallinity and material mechanics performance of PA6. SEM test shows that the increase of the content of attapulgite can affect its distribution in PA6,when the content is lower than 15% it can be better dispersed in the PA6. DSC and TG tests shows that PA6 blend material containing a small amount of attapulgite can enhance the thermal stability and heat resistance of material properties.