摘要
讨论了POE-g-MAH含量、MAH接枝率对PA66/POE/POE-g-MAH共混物性能的影响。当POE-g-MAH含量为10wt%～15wt%时,PA66/POE-g-MAH共混物发生脆-韧转变;随POE-g-MAH含量增加,共混物的缺口冲击强度、断裂伸长率显著增大,拉伸强度、弯曲强度、弯曲模量、熔体流动速率、吸水率均明显下降。当POE-g-MAH接枝率为0.05wt%～0.2wt%时,PA66/POE/POE-g-MAH共混物发生脆-韧转变;随POE-g-MAH接枝率增加,共混物的缺口冲击强度、断裂伸长率增大,拉伸强度、弯曲强度、弯曲模量、吸水率变化不大,熔体流动速率下降。SEM照片和Molau实验表明,POE-g-MAH对PA66具有显著的增容增韧效果。
The influence of POE-g-MAH content and MAH grafting rate on the blends of PA66/POE/POE-g- MAH were investigated. The brittle-ductile transition occurred when the content of POE-g-MAH changed from 10wt% to 15wt% in the blends. With increase of the content of POE-g-MAH, the notched impact strength and the elongation at break of the blends increased significantly, while the tensile strength, bending strength and modulus de-clined, the melt flow rate and the water absorption decreased. While in PA66/POE/POE-g-MAH blends, the brittle-ductile transition occurred when the graft rate of POE-g,MAH changed from 0.05wt% to 0.2wt%. With the in-crease of graft rate of POE-g-MAH, the notched impact strength and the elongation at break of blends increased, while the tensile strength, bending strength and modulus, the water absorption did not change obviously, and the melt flow rate decreased. SEM photographs and Molau compatibility experiment showed that, POE-g-MAH had a signifi-cant effect both on the compatibility and toughness on PA66.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2013年第1期72-77,共6页
Aerospace Materials & Technology
