摘要
采用熔融挤出的方法制备了聚酰胺6/氯化锂/苯乙烯接枝马来酸酐(PA6/LiCl/SMA)复合材料,研究了SMA用量对PA6/LiCl/SMA复合材料的结晶熔融行为及性能的影响。结果表明:SMA的加入会促进Li+与PA6中酰胺基团的络合作用,破坏PA6分子链间的氢键,另外SMA自身能与PA6分子链发生接枝反应,在双重作用下使复合材料的熔点降低到185.53℃。通过DSC和XRD发现:SMA的加入会促使PA6/LiCl/SMA复合材料的结晶形态由α晶型向γ晶型转变,并能有效提高复合材料的力学性能,当SMA用量为3 phr时,其拉伸强度比未添加SMA时提高了53.02%,冲击强度也有所提高,但复合材料的熔体流动速率会有所下降。
The research focused on the effect of SMA contents on the crystallization process and the properties of the polyamide 6 （PA6）/LiCI/SMA composites which were prepared through melting extrusion. The results show that the addition of SMA can promote the complexation of Li＋ and amide groups in PA6; on the other hand, SMA can also react with PA6. The melting point of PA61 LiCI/SMA composite decreases to 185.53°C with these double effects. By using DSC and XRD, it reveals that PA6 favor the crystal phase of y instead of α with the addition of SMA, and the mechanical properties of the composite increase obviously. When the content of SMA is 3 phr, the tensile strength increases by 53.02% compared with the composite without SMA, and the impact strength also increases, but the melt flow rate （MFR） of the PA6/LiCI/SMA decreases.
出处
《塑料科技》
CAS
北大核心
2014年第3期58-61,共4页
Plastics Science and Technology
