...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Heat Transfer >Infrared Radiative Properties of Thin Polyethylene Coating Pigmented With Titanium Dioxide Particles
【24h】

Infrared Radiative Properties of Thin Polyethylene Coating Pigmented With Titanium Dioxide Particles

机译：TiO2微粒包覆的聚乙烯薄膜的红外辐射性能

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 infrared (IR) radiative properties of TiO_2 pigment particles must be known to perform thermal analysis of a TiO_2 pigmented coating. Resins generally used in making pigmented coatings are absorbing at IR wavelengths, which means that the conventional Mie solution (MS) may not be adequate in this domain. There are two approaches to evaluating radiative properties in an absorbing medium: far field approximation (FFA) and near field approximation (NFA). In this study, after reviewing these two approaches, we evaluated the radiative properties of TiO_2 particles in polyethylene resin as an absorbing matrix in the wavelength range of 1.7-15 μm based on the MS, FFA, and NFA. We then calculated the effective scattering and absorption coefficients for different models. To investigate the effect of the particle size and volume concentration on the trans-mittance of IR wavelengths, we made a nongray radiative heat transfer in an anisotropic scattering monodisperse pigmented layer, with independent scattering using the radiation element method by the ray emission model. The results showed that all three approaches predicted similar results in the particle size domain and volume fraction range utilized in pigmented coatings.
机译：必须知道TiO_2颜料颗粒的红外（IR）辐射性能才能对TiO_2颜料涂层进行热分析。通常用于制造着色涂料的树脂在IR波长处吸收，这意味着常规Mie溶液（MS）在该领域可能不足。有两种方法可以评估吸收介质中的辐射特性：远场近似（FFA）和近场近似（NFA）。在这项研究中，在回顾了这两种方法之后，我们基于MS，FFA和NFA，评估了1.7_2μm波长范围内作为吸收基质的聚乙烯树脂中TiO_2粒子的辐射性能。然后，我们计算了不同模型的有效散射系数和吸收系数。为了研究粒径和体积浓度对红外波长透射率的影响，我们在各向异性散射单分散颜料层中进行了非灰色辐射传热，并通过射线发射模型使用辐射元素方法进行了独立散射。结果表明，所有三种方法在用于颜料涂料的粒度范围和体积分数范围内均预测出相似的结果。

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