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与SEBS-g-MAH兼容的PA10T/PPO混合物的制备和性能

Housheng Xia¹, Zhen Jiang¹, Jiaxiang Tang²

¹School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.

|June 19, 2024

概括

这项研究通过使用SEBS-g-MAH兼容剂与聚烯氧化物 (PPO) 混合增强聚胺 (PA10T). 由此产生的聚合物混合物显示出更好的介电性质和冲击强度,克服了PA10T的局限性.

科学领域:

聚合物科学与工程聚合物科学与工程
材料科学材料科学材料科学
复合材料复合材料复合材料

背景情况:

像PA10T这样的半芳香聚胺很有前途,但其尺寸精度不佳,吸水率高,介电性能不佳.
聚合物混合是一种可行的策略,可以提高材料性能并克服单个聚合物的限制.

研究的目的:

使用 SEBS-g-MAH 兼容器进行融混合,制造和表征PA10T/PPO 混合物.
调查SEBS-g-MAH对PA10T和PPO的兼容性和分散性的影响.
评估PPO含量对PA10T混合物的热,机械,介电和物理性能的影响.

主要方法:

融混合被用来创建PA10T/PPO混合物与不同的比例和一个SEBS-g-MAH兼容器.
莫劳试验和扫描电子显微镜 (SEM) 评估了混合物的兼容性和形态.
差分扫描热量计 (DSC),热重力计分析 (TGA) 和动态机械分析 (DMA) 评估了热和机械性能.
系统地测量了吸水率,注塑收缩率和介电性质.

主要成果:

通过形成in-situ共聚合物,SEBS-g-MAH有效地改善了PA10T中的PPO分散,从而改进了域大小.
这些混合物表现出与纯PA10T类似的热稳定性和结晶行为.
增加PPO含量降低了PA10T的玻璃过渡温度和储存模量.
在2.5 GHz的介电损耗显著降低 (从0.00866降至0.00572),增加了10-40%的PPO.
打孔的Izod冲击强度从7.9kJ/m2增加到13.7kJ/m2随着PPO含量的增加.

结论:

添加SEBS-g-MAH兼容剂成功地改善了PPO在PA10T中的混合性和分散性.
PA10T/PPO混合物表现出增强的介电性能和机械强度,特别是抗冲击性能.
这些发现表明,PA10T/PPO混合物对于要求更好的尺寸稳定性,更低的介电损失和更高的性应用具有前景.

关键词:

在SEBS-g-MAH中.兼容器兼容器兼容器兼容器介电性质介电性质是指介电性质.聚甲二甲胺) 是一种聚甲二甲二甲胺 (poly(decamethylene terephthalamide) 的一种.聚氧化 (PFO) 是一种聚氧化.

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