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首页> 外文期刊>Macromolecular symposia >Kinetics Study of Curing by FT-IR and Dynamic Thermomechanical Analysis of the Glass-Conservation Epoxy Resin HXTAL-NYL-1
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Kinetics Study of Curing by FT-IR and Dynamic Thermomechanical Analysis of the Glass-Conservation Epoxy Resin HXTAL-NYL-1

机译:FT-IR固化的动力学研究及玻璃保守环氧树脂HXTAL-NYL-1的动态热力学分析

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摘要

This work has focused on the study of a commercially-available epoxy resin manufactured especially for glass conservation and treatment, HXTAL-NYL-1. It has been produced for this purpose and remains crystal clear over time and exposure to direct light. Through Fourier Transform Infrared Spectroscopy (FT-IR) the degree of conversion (% DC) versus time can be determined following the 910cm~(-1) peak which corresponds to the oxirane bond and eliminates by time passing. Area calculations for both diminishing and standard peaks used as references help us to evaluate the % DC. This kinetics study revealed strong dependence of % DC on polymerization temperature. Dynamic Thermomechanical Analysis (DMTA) is a widely used technique when cross-linked polymeric materials require characterization. Information such as elastic modulus (E'), loss modulus (E''), tangent delta (tanδ=E''/E') and T_g are basic properties for future applications of the material. The oscillation occurs in a temperature range, starting with an elastic behavior of the sample and ending to a viscous one. Tanδ curves of the studied resin yield narrow peaks, indicating the rather uniform structure of the polymeric network. The T_g values do not vary significantly with hardening temperatures.
机译:这项工作专注于研究专门为玻璃保护和处理而制造的市售环氧树脂HXTAL-NYL-1。它是为此目的而生产的,并且随着时间的流逝以及暴露在直射光下仍保持透明。通过傅里叶变换红外光谱(FT-IR),可以确定对应于环氧乙烷键的910cm〜(-1)峰的转化率(%DC)与时间的关系,并随着时间的流逝而消除。用作参考的递减峰和标准峰的面积计算有助于我们评估%DC。动力学研究表明,%DC强烈依赖于聚合温度。当需要表征交联聚合物材料时,动态热力学分析(DMTA)是一种广泛使用的技术。诸如弹性模量(E'),损耗模量(E''),正切增量(tanδ= E''/ E')和T_g之类的信息是该材料未来应用的基本特性。振荡发生在一个温度范围内,从样品的弹性行为开始,一直到粘性的。所研究树脂的Tanδ曲线产生窄峰,表明聚合物网络的结构相当均匀。 T_g值随硬化温度变化不大。

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