由脱晶蒽油制备沥青树脂的研究

Synthesis of pitch resin from de-crystal anthracene oil

以脱晶蒽油为原料,苯甲醛为交联剂,在浓硫酸的催化作用下合成了沥青树脂。采用FT-IR和TGA分析手段研究了缩聚反应机理和热失重行为。试验过程中考察了合成条件对沥青树脂的结焦值、恩氏黏度和黏结强度等性能的影响。结果表明,脱晶蒽油与苯甲醛发生了阳离子聚合反应,与原料相比,沥青树脂的残炭值提高了24%,最大失重速率时的温度相对升高了143℃。改变合成工艺条件能调控沥青树脂的性能指标。

A pitch resin has been synthesized by using de-crystal anthracene oil as monomer and benzaldehyde as cross-linking agent at the presence of concentrated sulfuric acid.The reaction mechanism and weight loss of the obtained pitch resin was characterized by Fourier transform infrared spectroscopy（FT-IR） and thermogravimetric analysis（TGA）,respectively.The effects of synthesis conditions on the properties of the pitch resin such as,coking value,Engler viscosity and binding strength were investigated by single factor experiments.Experimental results showed that the cationic polymerization occurred between de-crystal anthracene oil and benzaldehyde.In comparison with de-crystal anthracene oil,the coking value of the pitch resin was increased by 24%,and the temperature of maximum TGA rate was relatively increased by 143 ℃.The properties of the pitch resin could be controlled by changing synthesis conditions.