g-C_(3)N_(4)的制备及其对环氧树脂复合材料性能的影响  

Preparation of g-C_(3)N_(4) and Its Effect on Properties of Epoxy Composites

作　　者：刘扬 娄春华[1,2] 周永丽 姜思雨 Liu Yang;Lou Chunhua;Zhou Yongli;Jiang Siyu(College of Materials Science and Engineering,Qiqihar University,Qiqihar 161006,China;Heilongjiang Key Laboratory of Polymer Matrix Composites,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔161006 [2]黑龙江省聚合物基复合材料重点实验室,黑龙江齐齐哈尔161006

出　　处：《工程塑料应用》2022年第1期127-132,共6页Engineering Plastics Application

基　　金：黑龙江省自然科学基金项目(E2018058);黑龙江省省属高等学校基本科研业务费科研项目(CLKFKT2021B8,135309437)。

摘　　要：以尿素为原料采用热剥离法制备类石墨相氮化碳(g-C_(3)N_(4)),经傅里叶变换红外光谱与X射线衍射共同证明目标产物制备成功。将g-C_(3)N_(4)与环氧树脂E51混合制备多功能E51/g-C_(3)N_(4)(CNE)复合材料。热重分析表明,与E51相比,CNE复合材料的失重10%温度和失重50%温度以及残炭量增加,热稳定性提高。动态热机械分析测试表明,CNE复合材料在室温的储能模量低于E51,而玻璃化转变温度高于E51。冲击性能测试表明,g-C_(3)N_(4)质量分数为3%时,CNE复合材料的冲击强度比E51提高了43.5%。电导率测试表明,g-C_(3)N_(4)质量分数为4%时,复合材料的电导率从E51的3.7 S/cm提高至11.3 S/cm。微型燃烧量热测试表明,复合材料的热释放速率峰值较E51明显减小,阻燃性能提高。Graphitic carbon nitride(g-C_(3)N_(4))was prepared using thermal exfoliation with urea as raw material.Fourier transform infrared spectroscopy and X-ray diffraction show that the objective product is successfully prepared.The multifunctional epoxy resin E51/g-C_(3)N_(4)(CNE)composites were prepared by mixing g-C_(3)N_(4) with E51.Thermogravimetric analysis shows that the thermal stabilities of the CNE composites are improved owing to the increase of the temperature of 10%weight loss,temperature of 50%weight loss and the amount of carbon residue.Dynamic thermomechanical analysis shows that the CNE composites have low storage modulus at room temperature and glass transition temperatures are higher than that of E51.Impact performance test shows that the impact strength of the CNE composite with 3wt%g-C_(3)N_(4) is improved by 43.5%compared with that of E51.It is found that the electric conductivity of the CNE composite with 4wt%g-C_(3)N_(4) increases from 3.7 S/cm of E51 to 11.3 S/cm through electric conductivity test.By micro combustion calorimetry,the flame retardancy of the CNE composites are improved because the peaks heat release rate of the composites are lower than that of E51.

关 键 词：类石墨相氮化碳 环氧树脂 热稳定性 冲击性能 导电性能 燃烧性能 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]