【摘要】 以煤沥青为单体、对苯二甲醛为交联剂,在对甲苯磺酸的催化作用下合成缩合多核芳烃(COPNA)树脂。采用FT-IR和1H-NMR研究其反应机理;采用TGA-DSC研究该COPNA树脂的热行为。此外,研究了反应时间对COPNA树脂不同组分的影响。结果表明,煤沥青能够与对苯二甲醛合成COPNA树脂,其反应机理为酸催化下的阳离子型缩聚反应;COPNA树脂不仅具有很好的耐热性和炭收率,而且具有很好的粘结和工艺性能。更多还原

【Abstract】 The condensed polynuclear aromatic(COPNA) resin was synthesized using coal tar pitch as monomer and terephthalic aldehyde as cross-linking agent in the presence of p-toluene sulfonic acid.Reaction mechanism was studied using FT-IR and 1H-NMR.TGA-DSC was employed to study the thermal behavior of COPNA resin.Furthermore,the relation between react time and different content of COPNA resin was investigated.The results show that coal tar pitch and terephthalic aldehyde can be used to synthesize COPNA resin.The COPNA resin possesses good thermo-stability and high coke value.Moreover,the resin has good processablity and excellent bonding performance as well.更多还原