水力动力学和薄膜形成机制 印刷中的水性聚氨涂层研究
Yuegang Liu1, Xiuhua Zhao2,3, Guoxian Jiang1
1School of Mechanical and Electrical Engineering, Weifang University of Science and Technology, Weifang 262700, China.
ACS omega
|January 19, 2026
概括
环保的水性聚氨涂层是为织品印刷而开发的. 一个计算流体动力学模型和实验证实,涂层特性和打印参数决定了传输体积,按照达西的说法.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 织技术 织技术 织技术
背景情况:
- 水性聚氨 (APU) 提供了环境效益,但缺乏用于实际应用的工程研究.
- 对APU涂层行为的有限理解妨碍了其在工业印刷过程中的使用.
- 需要先进的表征和建模来弥合APU属性和打印性能之间的差距.
研究的目的:
- 开发适用于印制织吸血剂的环保APU涂层.
- 研究已制备的APU涂层的质性质和机械特性.
- 建立一个计算流体动力学 (CFD) 模型来模拟APU涂层打印过程,并分析薄膜形成.
主要方法:
- 用添加剂 (硬化剂,加厚剂,平平剂,除泡剂) 制备APU复合材料.
- 使用富里埃变换红外光谱 (FTIR) 谱学,动态光散射 (DLS) 和激光多普勒电泳 (LDE) 的表征.
- 风湿学评估和CFD模型的开发,以模拟印刷过程中的流体动力学.
- 使用定制打印平台进行实验验证,以研究转移变异.
主要成果:
- 成功合成和表征APU涂料,具有可取的印刷类型的质性质.
- 对CFD模型的分析显示,在挤压器尖端附近的水力动力压力对于APU涂层转移至关重要.
- 实验和模拟结果表明,APU涂层转移体积符合达西定律.
- 建立了涂层特性,打印参数 (力,角度,速度) 和传输体积之间的相关性.
结论:
- 开发的APU涂层适用于环保的织品印刷应用.
- 该CFD模型为了解和优化APU涂层膜形成和转移机制提供了有价值的工具.
- 这项研究弥合了 APU 涂层在印刷中的材料科学和工程实践之间的差距.
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