摘要： 以双酚 A 环氧丙烯酸酯为预聚物，制备了液态 UV 固化树脂，并将石墨烯分散于液态 UV固化树脂中，研究了石墨烯对树脂性能的改进，同时与炭黑改性树脂进行了平行对比。 结果表明：透射电镜观察到质量分数为 0.025%的炭黑在液态 UV 固化树脂中发生团聚，炭黑改性后树脂拉伸强度下降了 32.8%，弯曲模量下降了 46.88%，改性效果差；而透射电镜显示石墨烯在液态 UV 固化树脂中的分散效果较好，经石墨烯改性后的 UV 固化树脂拉伸强度提高了 8.39%，弯曲模量下降了 46.79%，表明石墨烯对液态 UV固化树脂具有增强增韧的作用。

关键词: 石墨烯, 炭黑, UV 固化, 环氧丙烯酸酯

Abstract: In this paper, a graphene was dispersed in the liquid UV curable resin which was mainly composed of bisphenol A epoxy acrylate as prepolymer. The properties of the graphene modified resin were investigated as compared with that of carbon black modified resin. The TEM indicated that carbon black the mass fraction was 0.025%) formed agglomerate structure in the liquid UV curable resin. After modified by carbon black the tensile strength of UV curing resin was decreased by 32. 8% and the flexural modulus was decreased by 46. 88%, indicating that the carbon black had the negative effect on the liquid UV curable resin. However, the graphene was well dispersed in UV curable resin, which was observed by TEM. After modified by graphene, the tensile strength of UV curing resin was increased by 8.39%, and the flexural modulus was decreased by 46. 79%, indicating that the graphene had the good toughening and reinforcing effects on the liquid UV curable resin.

Key words: graphene, carbon black, UV curing, epoxy acrylate