Method for producing cross-linked cured product, and cross-linked cured product

A method for producing a crosslinked cured product and the crosslinked cured product. The manufacturing method is characterized by comprising: a step of preparing a resin composition containing a first resin and a second resin different from the first resin, the content ratio of the first resin to the second resin being in the range of from 9: 1 to 3: 7 by weight; and a step of heating the resin composition to a temperature of 260 DEG C or more and thermally crosslinking the resin composition, the first resin being one or more selected from a group consisting of a bifunctional epoxy resin having a weight average molecular weight of 4,000 or more and a phenoxy resin, and the second resin being a polycarbonate resin. 一种交联硬化物的制造方法及交联硬化物。所述制造方法的特征在于包括：制备树脂组合物的步骤，所述树脂组合物含有第一树脂和与所述第一树脂不同的第二树脂，所述第一树脂与所述第二树脂的含有比率第一树脂：第二树脂以重量比计为9：1～3：7的范围内；以及将所述树脂组合物加热至260℃以上的温度并使所述树脂组合物进行热交联的步骤，所述第一树脂为选自由重量平均分子量为4,000以上的二官能型环氧树脂、及苯氧树脂所组成的群组中的一种以上，所述第二树脂为聚碳酸酯树脂。