采用一种核壳粒子作为增韧剂制备新型中温固化胶膜（SY-59），研究核壳粒子增韧剂对中温固化胶膜的微观形貌、玻璃化转变温度（T _g）、胶接性能、耐高温性能等性能的影响。实验结果表明，核壳粒子增韧剂的加入，可以使得胶膜的剪切强度和浮辊剥离强度显著提高，使其具有高强高韧的特点。核壳粒子增韧剂的最佳添加量为15 phr，对应胶膜的23 ℃剪切强度和23 ℃浮辊剥离强度分别可以达到40.5 MPa和10.6 kN·m^-1。同时，与端羧基丁腈橡胶（CTBN）增韧剂相比，核壳粒子增韧剂加入中温固化树脂体系后胶膜的T _g无明显变化，这使得其可以很好地解决橡胶增韧中温固化胶膜耐高温性能相对较差的问题，使胶膜具有耐高温的特点。对应胶膜的120 ℃和150 ℃剪切强度分别可以达到29.8 MPa和10.2 MPa。最后，还对SY-59胶膜的全面性能进行评价，结果表明SY-59胶膜具有优异的耐介质性能、耐环境性能、批次稳定性和贮存稳定性。

The new medium temperature curing adhesive film （SY-59） is prepared using core-shell particle as the toughening agent. The influence of core-shell particle toughening agent on the microstructure， glass transition temperature （T _g）， bonding properties， and high-temperature resistance properties of the medium temperature curing adhesive films are studied. The results show that the tensile shear strength and the floating roller peel strength of the adhesive film improve significantly by adding the core-shell particle toughening agent. The SY-59 adhesive film exhibits characteristics of high strength and high toughness. The optimal content of the core-shell particle toughening agent is 15 phr， and the 23 ℃ tensile shear strength and the 23 ℃ floating roller peel strength of the corresponding adhesive film can reach 40.5 MPa and 10.6 kN·m^-1 respectively. Meanwhile， compared with the carboxyl-terminated butadiene-acrylonitrile rubber （CTBN） toughening agents， the T _g of the medium temperature resin system modified core-shell particle toughening agents have no significant changes after being added to the medium temperature curing resin system. It indicates that core-shell particle toughening agents can effectively solve the problem of poor high-temperature resistance properties of rubber toughened medium temperature curing adhesive films， making the adhesive film with good high-temperatures resistance properties. The 120 ℃ and 150 ℃ tensile shear strength of the SY-59 adhesive film can reach 29.8 MPa and 10.2 MPa. Finally， the comprehensive properties of SY-59 adhesive film are evaluated， and the results show that the SY-59 adhesive film has excellent medium resistance properties， environmental resistance properties， batch stability properties and storage stability properties.