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首页> 外文期刊>Journal of Applied Polymer Science >Effect of diluents on the decomposition behavior of vinyl ester resin
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Effect of diluents on the decomposition behavior of vinyl ester resin

机译：稀释剂对乙烯基酯树脂分解行为的影响

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An acidic vinyl ester resin (similar to6 mg KOH per gram of solid) was prepared by reacting a bisphenol-Abased epoxy resin with acrylic acid in the presence of tributylamine. The acrylated epoxy resin thus obtained was characterized by Fourier transform infrared spectroscopy. Five samples of vinyl ester resin containing styrene and methyl methacrylate (MMA) in the weight ratios 40:0, 30:10, 20:20, 10:30, and 0:40 were prepared at 30degreesC. These samples were cured, using 2 phr benzoyl peroxide, at 90 +/- 2degreesC for 1 h. The decomposition behavior of all the samples was studied by thermogravimetric analysis (TGA) at 10degreesC min(-1). The TG and dynamic thermogravimetry (DTG) thermograms showed single-step degradation in the individual cases of styrene and MMA, whereas a two-step degradation process was observed when styrene was mixed with MMA in any proportion. For all the samples, the order of the reaction was one for the first step. This value was calculated with the Coats and Redfern equation in accordance with the best-fit analysis and further confirmed by linear regression analysis. From this value of reaction order (n), the activation energy (E) and pre-exponential factor (Z) were calculated, and the validity of the data was checked by statistical analysis. (C) 2003 Wiley Periodicals, Inc. [References: 21]
机译：在三丁胺的存在下，通过使双酚A基环氧树脂与丙烯酸反应，制得酸性乙烯基酯树脂（类似于每克固体6 mg KOH）。通过傅立叶变换红外光谱法表征由此获得的丙烯酸酯化环氧树脂。在30℃下制备五个重量比为40：0、30：10、20：20、10：30和0:40的含有苯乙烯和甲基丙烯酸甲酯（MMA）的乙烯基酯树脂样品。这些样品使用2 phr过氧化苯甲酰在90 +/- 2℃下固化1小时。通过热重分析（TGA）在10°C min（-1）下研究了所有样品的分解行为。 TG和动态热重（DTG）热分析图显示了在苯乙烯和MMA个别情况下的一步降解，而当苯乙烯与MMA以任何比例混合时，观察到了两步降解过程。对于所有样品，第一步的反应顺序是一个。根据最佳拟合分析，使用Coats和Redfern方程计算该值，并通过线性回归分析进一步确认。根据该反应阶数（n）的值，计算出活化能（E）和指数前因子（Z），并通过统计分析检查数据的有效性。 （C）2003 Wiley Periodicals，Inc. [参考：21]

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