• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of near infrared spectroscopy >Measurement of glass transition temperature, residual heat of reaction and mixing ratio of epoxy resins using near infrared spectroscopy: a preliminary study
【24h】

Measurement of glass transition temperature, residual heat of reaction and mixing ratio of epoxy resins using near infrared spectroscopy: a preliminary study

机译：用近红外光谱法测量玻璃化转变温度，反应余热和环氧树脂的混合比：初步研究

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

As a measure of the degree of curing of epoxy resins, the glass transition temperature, T{sub}g, and the residual heat of reaction, ΔH{sub}r, are often used. In this study, near infrared spectroscopy and multivariate calibration [partial least squares regression (PLSR)] have been used to monitor the two variables, using differential scanning calorimetry (DSC) as the reference method. The epoxy under study was a commercial system consisting of the resin, trimethylolpropanetriglycidylether, and the hardener, 3-aminomethyl-3,5,5,-trimethylcyclohexylamine. Using samples cured under different conditions, calibrations resulted in root mean square errors of cross-validation (RMSECV) of 18 Jg{sup}(-1) for ΔH{sub}r (range for ΔH{sub}r: 6.1-231.3 Jg{sup}(-1)) and 7.2℃ for T{sub}g (range for T{sub}g: 41.5-98.8℃). Also, a PLSR model for mixing ratio of hardener and resin was obtained, resulting in a RMSECV of 0.0040 (range for mixing ratio: 0.180-0.380).
机译：作为环氧树脂的固化程度的量度，通常使用玻璃化转变温度T {sub} g和反应残余热ΔH{sub} r。在这项研究中，使用差示扫描量热法（DSC）作为参考方法，近红外光谱法和多元校正[偏最小二乘回归（PLSR）]已用于监视这两个变量。所研究的环氧树脂是一种商业体系，由树脂，三羟甲基丙烷三缩水甘油醚和硬化剂3-氨基甲基-3,5,5，-三甲基环己胺组成。使用在不同条件下固化的样品，校准会导致ΔH{sub} r的交叉验证均方根误差（RMSECV）为18 Jg {sup}（-1）（ΔH{sub} r的范围为6.1-231.3 Jg {sup}（-1））和T {sub} g为7.2℃（T {sub} g的范围为41.5-98.8℃）。另外，获得用于硬化剂和树脂的混合比的PLSR模型，得到0.0040的RMSECV（混合比的范围：0.180-0.380）。

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