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.

中文翻译：

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具有更高粘合强度和耐老化性的 UV 固化有机硅基胶粘剂


有机硅胶粘剂在许多领域发挥着重要作用，但仍然存在其粘合强度弱、固化时间长的挑战。本文通过新型甲基丙烯氧基官能化硅树脂与 15 wt % 丙烯酸 （AA） 的协同作用，实现了一种可紫外线 （UV） 固化、高粘附强度、耐老化的有机硅基胶粘剂。这种有机硅基胶粘剂可在 60 s 内进行紫外线固化，剪切强度达到 6.1 MPa，远高于大多数市售有机硅胶粘剂。此外，这种胶粘剂具有出色的耐老化性;在 150 °C 老化、25 °C 浸入水中 168 h、或在 85 °C 和 85% 相对湿度下处理 1000 h 后，其粘合强度仍超过 4 MPa。优异的粘附力和耐老化性主要取决于极性羧基和甲基丙烯氧基以及稳定的 Si-O-Si 骨架的协同作用。因此，这种胶粘剂将用于电子、建筑、光学等领域。