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首页> 外文期刊>Journal of Applied Polymer Science >Comparison of Unsaturated Polyester and Vinylester Resins in Low Temperature Polymerization
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Comparison of Unsaturated Polyester and Vinylester Resins in Low Temperature Polymerization

机译：低温聚合中不饱和聚酯和乙烯基酯树脂的比较

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摘要

Many composite products are produced at low temperatures in processes such as resin transfer molding (RTM), vacuum infusion molding (e.g., Seemann Com- posite Resin Infusion Molding Process-SCRIMP), and hand lay-up. These processes are widely used for marine, civil infrastructure, transportation and defense applica- tions. Unsaturated polyester and vinylester resins are two major resins used in these processes due to their low cost, good performance, and processibility. In this study, the reaction kinetics and rheological changes of these two resins cured at low temperatures were studied. Effects of resin type, initiator, promoter, inhibitor and retarder on the reaction kinetics and rheological behaviors were examined using a Differential Scan- ning Calorimeter (DSC) and a Rheometrics Dynamic Analyzer (RDA). A model was developed to quantify the effects of resin type, temperature, and different curing agents on the gel time for both polyester and vinylester resins cured at low temperatures.
机译：许多复合产品是在低温下通过诸如树脂传递模塑（RTM），真空灌注成型（例如Seemann复合树脂灌注成型工艺-SCRIMP）和手工铺层等工艺生产的。这些过程被广泛用于海洋，民用基础设施，运输和国防应用。由于它们的低成本，良好的性能和可加工性，不饱和聚酯和乙烯基酯树脂是在这些方法中使用的两种主要树脂。在这项研究中，研究了在低温下固化的这两种树脂的反应动力学和流变学变化。使用差示扫描量热仪（DSC）和流变动力学分析仪（RDA）检查了树脂类型，引发剂，促进剂，抑制剂和阻滞剂对反应动力学和流变行为的影响。开发了一个模型来量化在低温下固化的聚酯和乙烯基酯树脂的树脂类型，温度和不同固化剂对胶凝时间的影响。

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