中国塑料2025，Vol.39Issue(3)：30-35,6.DOI:10.19491/j.issn.1001-9278.2025.03.006
SEBS-g-MAH对PPO/PA66复合材料性能和形貌的影响
Effect of SEBS-g-MAH on properties and morphology of PPO/PA66 blends
杨青林 1周松 1李璨然 1余闻达 1罗玉梅1
作者信息
- 1. 西南石油大学新能源与材料学院,成都 610500
- 折叠
摘要
Abstract
Toughened polyphenylene ether/polyamide 66(PPO/PA66)blends were prepared through twin-screw extru-sion and injection molding using maleic anhydride-grafted styrene-ethylene-butene-styrene copolymer(SEBS-g-MAH)as an impact modifier.Their water absorption,mechanical properties,melt flow performance were investigated and their crystallization behavior and fractured morphology were studied by differential scanning calorimetry and scanning electron microscopy.The results indicated the toughness and tensile strength of PPO/PA66 blends decreased significantly in the presence of PPO due to poor interfacial adhesion between PA66 and PPO.Owing to the energy absorption caused by SEBS-g-MAH as well as an improvement in the compatibility between PA66 and PPO,the addition of 10 phr SEBS-g-MAH into the PPO/PA66(30/70)blend resulted in an increase in the tensile strength,elongation at break and impact strength by 23.95%、81.58%and 157.39%,respectively.The PPO/PA66(30/70)blend obtained better compre-hensive properties with the addition of 10phr SEBS-g-MAH,and it achieved relative maximum toughness at the SEBS-g-MAH loading of 18phr.The PPO/PA66(30/70)containing 10phr SEBS-g-MAH present a water absorption of 0.61%.This result decreased by 55.88%Compared to the water absorption(1.36%)of pure PA66.PPO enhanced the crystal formation of PA66 in the bends,whereas SEBS-g-MAH inhibited its crystal formation of PA66.Both PPO and SEBS-g-MAH improved the melt processability of PA66.关键词
聚苯醚/聚酰胺66/马来酸酐接枝苯乙烯-乙烯-丁烯-苯乙烯共聚物/力学性能/吸水率/结晶性能Key words
polyphenylene ether/polyamide 66/maleic anhydride grafted styrene-ethylene-butene-styrene copolymer/mechanical property/water absorption/crystallization property分类
化学化工引用本文复制引用
杨青林,周松,李璨然,余闻达,罗玉梅..SEBS-g-MAH对PPO/PA66复合材料性能和形貌的影响[J].中国塑料,2025,39(3):30-35,6.
