石墨复合双极板因其优良的导电性和耐腐蚀性在燃料电池领域受到广泛关注，传统的石墨复合双极板模压成型方法存在效率低、操作复杂等问题，因此本工作提出了一种将石墨/树脂混合粉料通过辊压机轧制成预成型板，然后快速模压成型，以简化工艺操作并提升效率的预成型工艺方案。并通过优化辊压参数和添加辅助黏结剂，解决了预成型板压实不足和结构缺陷等问题，提升了工艺的可靠性和材料利用率。结果表明：温度的提升和辊距的减小均可以提升预成型板的压实密度，添加PTFE作为辅助黏结剂能够有效改善辊压过程中的缺陷，但过量添加会对导电性和气密性产生负面影响，其最优添加比例为5%（质量分数）。与传统的直接模压成型相比，通过该方案制备的双极板尽管面内电导率略有下降，但抗弯强度提高14.2%，制备周期缩短至原来的42.9%，显著提升生产效率。

Graphite composite bipolar plates have received widespread attention in the field of fuel cells due to their excellent conductivity and corrosion resistance. The traditional method of molding graphite composite bipolar plates has problems such as low efficiency and complex operation. Therefore， this study proposes a preform process scheme that simplifies the process operation and improves efficiency by rolling graphite/resin mixed powder into a pre-compress plate through a rolling machine and then rapidly molding it. By optimizing the rolling parameters and adding auxiliary binders， the problems of insufficient compaction and structural defects in the pre-compress plate are solved， improving the reliability of the process and material utilization rate. The results show that increasing the temperature and reducing the roll distance can both improve the compaction density of the pre-compress plate. Adding PTFE as an auxiliary binder can effectively improve the defects during the rolling process， but excessive addition can have a negative impact on conductivity and airtightness. The optimal addition ratio is 5% （mass fraction）. Compared with traditional direct compression molding， the bipolar plate prepared by this scheme has a slight decrease in in-plane conductivity， but its bending strength is increased by 14.2% and the preparation cycle is shortened to 42.9%， significantly improving production efficiency.