【摘要】 首次以煤沥青为单体 ,二乙烯基苯为交联剂 ,在对甲苯磺酸的催化作用下合成了缩合多核芳烃(COPNA)树脂。采用傅立叶红外分析 (FT- IR)和核磁共振氢谱 (1H- NMR)研究其反应机理 ;采用扫描电镜 (SEM)对反应过程中生成的中间相小球的尺寸变化分析 COPNA树脂的生成情况 ;采用热重 (TGA)研究 COPNA树脂的热稳定性。研究表明 ,该反应为阳离子型聚合反应 ,所获得的 COPNA树脂具有较高的耐热性 ,在氮气中的热降解起始温度为 4 10℃。更多还原

【Abstract】 Under the action of an acid catalyst, the condensed polynuclear aromatic (COPNA) resin was synthesized using coal tar pitch as monomer and divinylbenzene (DVB) as a cross-linking agent for the first time in this paper. The reaction mechanism was studied with FT-IR spectrum and 1H-NMR spectrum. Mesophase microbead was used to analyze the growth of COPNA resin with SEM during reaction, and the thermostability of COPNA resin was analyzed with TGA. It is indicated that the reaction is a positive ion-typed condensation polymerization catalyzed by acid. Besides, the COPNA resin has high heat-resistance, and the thermal decomposition temperature of the resin is 410 ℃.更多还原