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长碳链二元酸酯的合成及其物化性能
Authors
于得江
张光晋
韩伟
高永建
Publication date
1 January 2013
Publisher
Abstract
以杂多酸为催化剂、不同链长的二元酸为原料,合成了系列长碳链二元酸二元酯,考察了影响合成反应的因素及碳链长度对合成酯物化性能的影响.结果表明,在回流温度160℃、醇/酸摩尔比3:1、催化剂用量为总质量1%、反应时间120 min、带水剂用量为总质量10%的条件下,酯化率达98%以上.合成的酯具有良好的物化性能,其倾点最低为-74℃,闪点最高为258℃,粘度指数最大为187,优于现有商业化酯类润滑油基础油,达到现有航空润滑油基础油的标准.随着碳链增长,合成酯粘度增大,增加醇碳链长度对粘度的影响大于增加酸碳链长度的影响
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Last time updated on 05/12/2019