调整3D打印对象的机械性能,通过混合链传递剂在诺里什型I光启动RAFT聚合过程中
Zhihan Yuan1, Guangliang Li1, Chongyang Yang1
1State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Chemistry, an Asian journal
|July 1, 2024
概括
研究人员开发了一种3D打印方法,使用诺里什型I光启动可逆添加碎片链转移 (NTI-RAFT) 聚合. 调整聚合物分散性允许精确控制3D打印材料的机械性能.
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
- 增材制造 增材制造 增材制造
背景情况:
- 使用光控制可逆失活激素聚合 (photoRDRP) 的光诱导3D打印是聚合物材料制造的关键技术.
- 对于精确调整这些3D打印聚合物材料的机械性能,存在有限的方法.
研究的目的:
- 介绍一种简单的方法来调整3D打印对象的机械性能.
- 探索聚合物分散控制在诺里什型I光启动可逆添加碎片链转移 (NTI-RAFT) 聚合3D打印工艺中的影响.
主要方法:
- 研究了不同三碳酸盐 (BTPA) 和桑酸盐 (EXEP) 度和摩尔比率的影响.
- 采用诺里什I型光启动可逆添加碎片链转移 (NTI-RAFT) 聚合方法进行3D打印.
- 分析了扬模量,玻璃过渡温度和破裂时的延长的变化.
主要成果:
- 增加RAFT剂度或更高的BTPA比例降低了Young的模量和玻璃过渡温度.
- 相反,较高的BTPA比例导致断裂时延伸的增加.
- 这些属性修改与聚合物网络内的增强同质性有关.
结论:
- 基于NTI-RAFT的3D打印系统有效地生产具有定制机械性能的材料.
- 这种方法为定制3D打印对象中的聚合物特性提供了一种实用方法.
- 在增材制造中显示出各种实际应用的巨大潜力.
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