乙烯-乙酸乙烯共聚物作为低粘度光敏感组合物的多功能修饰剂
Dmitriy A Bazhanov1, Uliana V Nikulova1, Ramil R Khasbiullin1
1Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences (IPCE RAS), 31-4, Leninsky Prospect, 119071 Moscow, Russia.
Polymers
|October 28, 2025
概括
热处理的乙烯-乙酸共聚合物 (EVA) 在3D打印组合物中充当热塑性修饰剂和加厚剂. 在改善流动性能的同时,EVA
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 提高3D打印组合的低温物理和机械性能至关重要.
- 乙烯-乙酸共聚合物 (EVA) 被探索为光敏感材料的潜在修饰剂.
- 研究EVA作为热塑性修饰剂和聚合物链分支在光聚合物配方中的作用.
研究的目的:
- 评估使用热处理的EVA作为基于三丁烯酸盐 (tBA) 的光敏感化合物的修饰剂的可行性.
- 了解EVA对光固化系统的质,固化和结构性质的影响.
- 评估EVA作为与tBA结合的交叉连接剂的潜力.
主要方法:
- 福利埃变换红外 (FTIR) 和核磁共振 (NMR) 光谱用于分子结构分析.
- 风力测量和光谱测量用于研究组合流和固化动力学.
- 光差扫描热度计 (Photo-DSC) 和扫描电子显微镜 (SEM) 用于阶段组织和形态学.
主要成果:
- 对EVA的热处理产生C=C键,使tBA具有潜在的交联.
- 埃瓦作为一种有效的加厚剂,随着度的增加,它将成分流从牛顿式转变为伪塑料.
- 较高的EVA度降低了光化学聚合率和整体转化程度.
结论:
- 热处理的EVA可以修改和加厚光敏组合物,用于3D打印.
- 不同质相结构的形成和缺乏连续网络限制了EVA作为同时交叉连接器的使用.
- 在这个基于tBA的系统中,EVA的主要作用是作为功能添加剂,而不是交叉连接剂.
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