• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Terahertz Photonics; 20071112-14; Beijing(CN) >Applications of terahertz spectroscopy in the plastics industry
【24h】

Applications of terahertz spectroscopy in the plastics industry

机译：太赫兹光谱在塑料工业中的应用

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 worldwide production volume of polymers is still rising exponentially and the number of applications for plastic components steadily increases. Yet, many branches within the polymer industry are hardly supported by non-destructive testing techniques. We demonstrate that terahertz (THz) spectroscopy could be the method of choice to ensure high-quality polymer products. Applications range from the in-line monitoring of extrusion processes and the quality control of commodities in a mass production up to a total inspection of high-tech safety relevant products. Furthermore, we present an extension to THz time-domain spectroscopy in the form of a new data extraction algorithm, which derives the absorption coefficient, the refractive index and the thickness of a sample with very high precision in a single pass. Apart from that, we discuss the ability of THz systems for quality control of polymeric compounds. Here, it is essential to monitor the additive content as well as additive inhomogeneities within the mixture. Recently, we built a fiber-coupled THz spectrometer for in-line monitoring of compounding processes. Additionally, we demonstrate the potential of THz systems for the non-destructive and contactless testing of structural components. THz imaging is capable of analyzing material thicknesses, superstructures, the quality of plastic weld joints, and of detecting flaws in components. Plastics and THz form a very fruitful symbiosis. In return, plastics industry can provide THz systems with custom-tailored components, which have very attractive properties and extremely low costs. Examples of this development are photonic crystals or polymeric Bragg filters, which have recently been demonstrated.
机译：全球范围内聚合物的产量仍在呈指数级增长，塑料组件的应用数量也在稳步增长。但是，聚合物行业中的许多分支机构几乎都没有非破坏性测试技术的支持。我们证明了太赫兹（THz）光谱法可以作为确保高质量聚合物产品的首选方法。应用范围从在线监测挤出过程和批量生产中的商品质量控制到对高科技安全相关产品进行全面检查。此外，我们以一种新的数据提取算法的形式提出了对THz时域光谱的扩展，该算法可在单次通过中以非常高的精度得出样品的吸收系数，折射率和厚度。除此之外，我们讨论了太赫兹系统对高分子化合物进行质量控制的能力。在此，必须监控混合物中添加剂的含量以及添加剂的不均匀性。最近，我们建立了一个光纤耦合太赫兹光谱仪，用于在线监测复合过程。此外，我们展示了太赫兹系统在结构部件的非破坏性和非接触式测试中的潜力。太赫兹成像能够分析材料的厚度，上部结构，塑料焊接接头的质量以及检测零件中的缺陷。塑料和太赫兹共生非常成功。作为回报，塑料工业可以为THz系统提供量身定制的组件，这些组件具有非常吸引人的性能且成本极低。这种发展的例子是光子晶体或聚合物布拉格滤光片，最近已被证明。

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