新型 (甲基) 烯酸盐与可变键相互作用的合成及其在透明粘弹性薄膜中的应用
1South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China.
ACS omega
|April 1, 2024
概括
研究人员开发了用于显示器的透明粘弹性薄膜 (CVF) 的新烯酸单体. 尿素-烯酸共聚合物具有出色的光学和机械性能,非常适合灵活的显示应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 光电学是指光电子产品.
背景情况:
- 透明粘弹性薄膜 (CVF) 对显示技术至关重要.
- 结合单体 (H-单体) 增强了CVF的凝聚力,但通常在玻璃过渡温度 (Tg) 和结合常数 (Ka) 之间存在权衡.
- 由强结合引起的高Tg和高模量限制了可折叠显示器等应用.
研究的目的:
- 合成新的结合 (甲) 烯单体,以克服Tg-Ka的限制.
- 为灵活显示应用开发具有改进性能的先进CVF.
- 研究新的H-单体及其共聚物的结构-性质关系.
主要方法:
- 合成四种类型的H-单体:碳酸盐烯酸盐,碳酸盐甲烯酸盐,尿素烯酸盐和尿素甲烯酸盐.
- 选择的H-单体与2-乙基烯酸盐 (EHA) 的共聚合,并交叉链接形成H-共聚物.
- 使用风湿学,光学测量 (透射率,雾) 和机械测试 (剥离粘附,爬行恢复) 进行H-共聚物的表征.
主要成果:
- 尿素烯酸盐表现出最高的Ka,同时保持了适度的Tg.
- 由此产生的尿素-烯酸H-聚合物表现出卓越的性能.
- 实现了卓越的光学性能 (>98%的透射率,<1%的雾) 和机械性能 (8-12N/25毫米的剥皮粘附,84-92%的爬行恢复).
结论:
- 新型尿素-烯酸H-共聚合物为先进的CVF提供了有前途的解决方案.
- 这些材料克服了传统H-单体的局限性,使显示器的性能更好.
- 开发的材料为为灵活的显示应用创造高性能烯酸CVF提供了一条新的途径.
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