Adhesive technology is of high and increasing interest in a wide variety of conventional and emerging applications. One-component adhesives typically cure using moisture, heat and light. These approaches limit applications to specific substrates, inefficient handling in manufacturing, and can only be indirectly activated. Hence, we developed a method for remote, wireless, contactless curing of adhesives using alternating magnetic fields (AMF). This approach (“magnetocuring”) offers energy efficient, on-demand adhesion. Exposure of Mn_xZn_1-xFe₂O₄ Curie temperature tuned magnetic nanoparticles (CNP) additives within commercial epoxy adhesives to an AMF cured thermoset resins within min with minimal rise in substrate temperature. The heating of the CNP “switches off” above its Curie temperature offering failsafe heating. The in-situ heating of the CNP can be controlled by CNP composition, CNP loading, and AMF strength. Internal temperatures of 160 °C could be reached in 5 min, allowing curing of most commercial epoxy adhesives without resin scorching. The maximum lap shear adhesion strength exceeded 6.5 MPa. Magnetocuring is demonstrated on wood, ceramics, and plastics, which is of considerable interest in sports, automotive, and aerospace industries.

粘合剂技术在各种各样的常规和新兴应用中引起了越来越高的兴趣。单组分粘合剂通常使用水分，热量和光线进行固化。这些方法将应用限制在特定的基材上，制造过程中的处理效率低下，并且只能间接激活。因此，我们开发了一种使用交变磁场（AMF）进行粘合剂的远程，无线，非接触式固化的方法。这种方法（“磁化”）提供了节能的按需粘合。Mn _x Zn _1-x Fe ₂ O _4的暴露商业环氧树脂粘合剂中的居里温度调谐磁性纳米粒子（CNP）添加剂可在数分钟内与AMF固化的热固性树脂相结合，而基板温度的上升幅度最小。CNP的加热会在居里温度以上“关闭”，从而提供故障安全加热。在原位的CNP的加热可以通过CNP组合物，CNP装载和AMF强度来控制。可以在5分钟内达到160°C的内部温度，从而使大多数市售环氧胶粘剂固化而不会产生树脂焦烧。最大搭接剪切粘合强度超过6.5MPa。在木材，陶瓷和塑料上已证明了磁化，这在体育，汽车和航空航天行业中引起了极大的兴趣。