Lee Jineun, Lee Hanna, Kwak Giseop
Department of Polymer Science & Engineering, Polymeric Nanomaterials Laboratory, Kyungpook National University, 1370 Sankyuk-Dong, Buk-Ku, Daegu, 702-701, Republic of Korea.
Small. 2024 Nov;20(45):e2404907. doi: 10.1002/smll.202404907. Epub 2024 Jul 25.
Colorless, transparent, and mechanically robust aramid polymers are synthesized from two diamine monomers with strong electron-withdrawing groups, using low-temperature solution condensation with diacid chloride. The aramids dissolved very well in the liquid acrylamide monomers. When N,N-dimethylacrylamide (DMA) is used as a reactive diluent, films with the desired features are produced from the hybrid aramid-DMA resins via ultraviolet (UV) curing. The hybrid films are colorless and transparent in the visible region and showed an increase in the glass transition temperature, tensile strength, and elastic modulus in proportion to the aramid content. Laminated glass is manufactured using the hybrid resin as an interlayer, which exhibits very strong adhesion between the two sheets of glass, is not easily broken by an external impact, and do not scatter fragments. Moreover, the laminated glass do not distort images and functioned very effectively in UV blocking, soundproofing, and suppressing changes in the ambient temperature. Heat treatment further improves the light transmittance and impact resistance of the laminated glass. Laminated glass specimens with various fluorescence colors are also manufactured. Aramid-reinforced films prepared using N,N-diethylacrylamide as a reactive diluent underwent thermally induced phase separation in a wet state, providing smart glass with a privacy protection function.
无色、透明且机械性能强劲的芳族聚酰胺聚合物由两种带有强吸电子基团的二胺单体合成，采用与二酰氯的低温溶液缩合反应。芳族聚酰胺在液态丙烯酰胺单体中溶解性良好。当使用N，N - 二甲基丙烯酰胺（DMA）作为反应性稀释剂时，通过紫外线（UV）固化由芳族聚酰胺 - DMA混合树脂制备出具有所需特性的薄膜。混合薄膜在可见光区域无色透明，并且玻璃化转变温度、拉伸强度和弹性模量随芳族聚酰胺含量的增加而提高。使用混合树脂作为中间层制造夹层玻璃，该夹层玻璃在两片玻璃之间表现出非常强的附着力，不易因外部冲击而破碎，且碎片不会散落。此外，夹层玻璃不会使图像变形，在紫外线阻挡、隔音和抑制环境温度变化方面功能非常有效。热处理进一步提高了夹层玻璃的透光率和抗冲击性。还制造了具有各种荧光颜色的夹层玻璃样品。使用N，N - 二乙基丙烯酰胺作为反应性稀释剂制备的芳族聚酰胺增强薄膜在湿态下经历热致相分离，从而提供具有隐私保护功能的智能玻璃。
