• 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 >Determination of Temperatures of Polyamide 66 Directly from Near-Infrared Spectra
【24h】

Determination of Temperatures of Polyamide 66 Directly from Near-Infrared Spectra

机译：直接从近红外光谱测定聚酰胺66的温度

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

The commercial importance of polyamides (PAs) motivates the development of chemical analysis tools for use in characterizing their structure and properties. Near-infrared (IR) spectroscopy offers advantages in this regard because of its simplicity of sample preparation and compatibility with sample thicknesses on the order of millimeters. For applications in which the measurement of sample temperature is difficult with a conventional probe, the work presented here demonstrates the ability to determine the temperature of PA 66 directly from its near-IR spectrum. Temperature-induced changes in spectral shape in the 4000–5000 cm~(-1) region are extracted through application of the discrete wavelet transform, and the resulting preprocessed spectra are submitted to partial least-squares regression to construct predictive models for temperature. These models are tested across different samples of PA 66 and over a time span of 7 weeks. Errors in predicted temperatures averaged 1.50℃ over the range of 21–105℃.
机译：聚酰胺（PA）的商业重要性促使人们开发用于表征其结构和性能的化学分析工具。近红外（IR）光谱在这方面具有优势，因为它的样品制备简单，并且与毫米厚度的样品厚度兼容。对于使用常规探头难以测量样品温度的应用，此处介绍的工作证明了可以直接从PA 66的近红外光谱确定其温度的能力。通过应用离散小波变换提取温度在4000–5000 cm〜（-1）区域内光谱形状的变化，并将预处理后的光谱进行部分最小二乘回归以构建温度预测模型。这些模型在PA 66的不同样品上进行了7周的测试。在21–105℃范围内，预测温度的平均误差为1.50℃。

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