生物质树脂及其改性沥青研究

发布时间：2018-03-06 17:27

本文选题：生物油　切入点：生物油稠化　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国公路建筑事业的飞速发展,沥青作为路面主要的铺装材料,其使用量巨大。路面铺装的沥青主要是石油沥青,受石油不可再生的影响,石油沥青也有枯竭的可能;而作为资源中的一种,生物质具有可再生、年产量巨大且分布广的特点,但是对其的利用效率太低,因此研究生物质改性石油沥青有重要的科学意义和使用价值。根据现有的沥青改性手段和新型树脂的研究,利用生物油制备了生物油树脂、生物质苯并VA嗪开环树脂以及生物质环氧树脂,并用多种分析手段进行了表征,最终选择苯苯并VA嗪开环树脂进行了改性沥青的研究。分别向三种生物油中加入不同量的六次甲基四胺(HMTA),研究了生物油的稠化与固化行为。利用生物油和酚、醛、胺的反应,制备了多种生物质苯并VA嗪开环树脂,并检验了它们的固化性质和耐热性。实验得出以苯酚、生物油、尿素、多聚甲醛为原料合成的苯并VA嗪树脂各方面性质较好,苯并VA嗪树脂在加入适量有机酸的条件下,可以降低固化温度,提高固化物的耐热性。生物油环氧树脂合成的探索得出:生物油不适宜直接与带环氧基团的物质反应,而比较适合先于带双键的物质反应,然后不完全氧化双键得到生物质环氧树脂。生物质改性沥青的沥青:生物质苯并VA嗪混合树脂比例为2:1时,改性沥青的性能较为良好。
[Abstract]:With the rapid development of highway construction in China, asphalt, as the main pavement pavement material, its use is huge. The asphalt paved on the pavement is mainly petroleum asphalt, which is likely to be exhausted due to the influence of non-renewable oil. As one of the resources, biomass has the characteristics of renewable, large annual yield and wide distribution, but its utilization efficiency is too low. Therefore, it is of great scientific significance and practical value for graduate students to modify petroleum bitumen. According to the existing methods of asphalt modification and the study of new resin, bio-oil resin was prepared by using bio-oil. Biomass benzofaxazine ring opening resin and biomass epoxy resin were characterized by various analytical methods. Finally, Benzovasin ring opening resin was selected to study the modified asphalt. The thickening and curing behavior of bio-oil was studied by adding different amount of hexamethylenetetramine (HMTAA) into three kinds of bio-oil. The reaction of bio-oil with phenol, aldehyde and amine was used. Several kinds of Biomass benzofaxazine ring opening resins were prepared, and their curing properties and heat resistance were tested. The results showed that the benzo-VAzine resins synthesized from phenol, bio-oil, urea, and polyformaldehyde had better properties in all aspects. Under the condition of adding proper amount of organic acid, Benzovasin resin can reduce the curing temperature and improve the heat resistance of cured compounds. The exploration of the synthesis of bio-oil epoxy resin shows that bio-oil is not suitable to react directly with the substance with epoxy group. The results show that the modified asphalt has better performance when the ratio of biomass modified asphalt to benzofaxazine mixed resin is 2: 1.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414

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