Abstract: A secondgeneration acrylate structural adhesive (SGA) was prepared by mixing component A and B at a mass ratio of 1：1. In this SGA, the component A was a mixture of monofunctional acrylate, trifunctional acrylate, N,N′(4,4′methylenediphenyl) dimaleimide (BMI), ABS toughening agent, amine reductant and inhibitor as well as other auxiliaries, and the component B was a mixture of stabilizers, oxidizing agents and other auxiliaries. The effect of BMI content on the curing performance and heat resistance of the SGA was investigated. The results indicated that the SGA achieved an increase in hightemperature mechanical properties and glass transition temperature (Tg) due to the addition of BMI, and it obtained an optimum heat resistance with addition of 3 wt % BMI. Moreover, Tg also increased from 108.23 to 109.25 ℃, while the shear strength increased by 6 %, 40.8 %, and 103 % at room temperature, 120 ℃ and 200 ℃, respectively.

Key words: acrylate, N, N'-(4, 4'-methylenediphenyl) dimaleimide, heat resistance, structural adhesive