双相芳香氨基固化聚乙烯聚氨-尿素,用于同时结合具有不同极性的材料
Zhaoran Xu1, Peipei Shen1, Kangna Wang1
1Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Langmuir : the ACS journal of surfaces and colloids
|March 4, 2025
概括
新的芳氨酸固化剂通过控制聚氨-尿素相分离,增强极性和非极性材料之间的结合. 这项研究提出了一种用于改善各种应用中的附着力的新方法.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 粘附科学 粘附科学 粘附科学
背景情况:
- 聚氨尿素是具有可调节性质的多功能聚合物.
- 实现对极性和低极性材料的同时强粘合仍然是一个挑战.
- 芳氨酸固化剂在聚合物网络的形成和特性中起着至关重要的作用.
研究的目的:
- 合成新型芳香胺固化剂用于聚丁烯聚氨尿素.
- 研究这些固化剂对表面能量,微相分离和粘合性能的影响.
- 开发一种有效的同时粘合不同材料的方法.
主要方法:
- 通过迈克尔添加合成芳香胺固化剂 (A-HD,A-NPG,A-DCP).
- 使用合成固化剂制备的聚乙烯聚氨尿素的配方.合成固化剂.
- 使用原子力显微镜 (AFM) 分析微相分离的特征.
- 评估极性 (钢) 和低极性 (styrene-butadiene) 材料之间的剪接强度.
主要成果:
- 合成的芳香氨基固化剂平衡极和分散表面能量组件.
- 聚氨 - 尿素表现出显著的微相分离,使双极性粘附.
- 粘度和寿命可以通过调节固化剂结构来控制.
- PU-DCP样本实现了4.36 MPa的优异剪接强度,超过了MOCA和E300.
结论:
- 新型芳香氨基固化剂有效地增强了与不同极性的材料的同时结合.
- 调节聚氨的相隔结构是实现不同基板之间的强粘合的关键.
- 开发的材料为需要对各种表面强大的粘附性应用提供了有前途的解决方案.
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