• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Curing of poly(furfuryl alcohol) resin catalyzed by a homologous series of dicarboxylic acid catalysts: Kinetics and pot life
【24h】

Curing of poly(furfuryl alcohol) resin catalyzed by a homologous series of dicarboxylic acid catalysts: Kinetics and pot life

机译：一系列同源的二羧酸催化剂催化的聚糠醇树脂的固化：动力学和适用期

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Curing kinetics and pot life are two vital characteristics for the application of poly(furfuryl alcohol) (PFA) resin because of the complexities both in the resin composition and curing mechanisms involved. However, few reports have provided a complete picture of PFA curing behavior. In this research, the effect of the addition of catalysts on the pot life and curing behavior of a PFA resin were evaluated. A homologous series of dicarboxylic acids [i.e., oxalic acid (OX), succinic acid (SU), and adipic acid (SA)] were used as the catalysts. Rheometric and nonisothermal differential scanning calorimetry (DSC) measurements and headspace gas chromatography/mass spectrometry analysis were carried out at 0, 6, and 24 h after the addition of the catalyst. The relaxation exponent (n), gel stiffness (S), and gel strength (A(F)) of the prepared compositions were calculated with the Winter and Chambon and Gabriele rheological models. Furthermore, the curing kinetics were evaluated by the fitting of nonisothermal, multiple-heating-rate models. The DSC measurements showed a higher curing degree for samples containing OX catalyst compared to their counterparts containing either SU or AD. The rheometric findings supported an increased stiffness, gel strength, and curing development of the resin in the presence of OX compared to samples containing SU or AD. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44009.
机译：固化动力学和适用期是聚（糠醇）（PFA）树脂应用的两个重要特征，这是因为树脂组成和固化机理都十分复杂。但是，很少有报道提供PFA固化行为的完整情况。在这项研究中，评估了添加催化剂对PFA树脂的适用期和固化行为的影响。一系列同源的二羧酸[即草酸（OX），琥珀酸（SU）和己二酸（SA）]用作催化剂。在添加催化剂后的0、6和24小时进行流变和非等温差示扫描量热法（DSC）测量以及顶空气相色谱/质谱分析。所制备的组合物的松弛指数（n），凝胶刚度（S）和凝胶强度（A（F））用Winter和Chambon和Gabriele流变模型计算。此外，通过非等温多加热速率模型的拟合来评估固化动力学。 DSC测量表明，与含SU或AD的样品相比，含OX催化剂的样品的固化度更高。与含有SU或AD的样品相比，流变学结果支持了在存在OX的情况下提高了树脂的刚度，凝胶强度和固化发展。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44009。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号