Juan Ye, Zihua Zhang, Shengjun Huang, Yueyang Liu, Weishan Wen, Hongping Xiang
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引用次数: 0
摘要
有机硅粘合剂在许多领域发挥着重要作用，但其粘合强度弱、固化时间长等问题仍是其面临的挑战。本文通过一种新型甲基丙烯酰氧基官能化硅树脂与 15 wt % 丙烯酸（AA）的协同作用，实现了一种紫外线（UV）固化、高粘合强度、耐老化的有机硅粘合剂。这种硅基粘合剂可在 60 秒内完成紫外线固化，剪切强度达到 6.1 兆帕，远高于大多数市售硅基粘合剂。此外，这种粘合剂还具有出色的耐老化性；在 150 °C 下老化、在 25 °C 的水中浸泡 168 小时或在 85 °C 和 85% 的相对湿度下处理 1000 小时后，其粘合强度仍超过 4 兆帕。因此，这种粘合剂可用于电子、建筑、光学等领域。
UV-Curing Silicone-Based Adhesives with Improved Adhesion Strength and Aging Resistance
Silicone adhesives play an important role in many fields, but they are still challenged by their weak adhesion strength and long curing time. Herein, an ultraviolet (UV)-curable, high-adhesion-strength, aging-resistant silicone-based adhesive is realized by the synergy of a novel methacryloxy-functionalized silicone resin with 15 wt % acrylic acid (AA). This silicone-based adhesive can be UV-cured within 60 s, and the shear strength reaches 6.1 MPa, which is much higher than those of most commercially available silicone adhesives. Moreover, this adhesive has outstanding aging resistance; its adhesion strength still exceeds 4 MPa after being aged at 150 °C, immersed in water at 25 °C for 168 h, or treated under 85 °C and 85% relative humidity for 1000 h. The excellent adhesion and aging resistance mainly depend on the synergism of the polar carboxyl and methacryloxy groups and stable Si–O–Si skeletons. Therefore, this adhesive will be used in electronics, construction, optics, and other fields.
期刊介绍：
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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