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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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在保持红外光透明度的同时,开发可见不透明的多烯板.

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概括

这项研究开发了带有色素的线性低密度聚乙烯 (LLDPE) 板,保持了机械性能和红外 (IR) 透明度. 使用了诸如ZnO和TiO2之类的颜料,显示了可调节的IR特性,适用于各种应用.

关键词:
红外线调调在LLDPE中使用LLDPE纸张.红外透明度 红外透明度微观结构的微观结构颜料 颜料是一种颜料.显然是不透明的

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科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物科学 聚合物科学

背景情况:

  • 开发针对特定应用的功能化聚合物至关重要.
  • 线性低密度聚乙烯 (LLDPE) 是一种具有改造潜力的多功能聚合物.

研究的目的:

  • 创建有色素的LLDPE板,保持机械强度和红外 (IR) 透明度.
  • 研究不同颜料和度对LLDPE特性的影响.
  • 为了探索微结构可调节的IR属性.

主要方法:

  • 六种颜料 (ZnO,ZnS,TiO2,FeO黄色,FeO浅棕色,FeO深棕色) 与LLDPE在1,3和5%的重量级上混合.
  • 使用拉伸强度测试来评估机械性能.
  • 使用直接和反射热源测量红外透明度 (IR).
  • 福利埃变换红外光谱法 (FTIR) 和紫外可见光谱法 (UV-VIS) 被使用.

主要成果:

  • 拉伸强度在较低的色素度 (1-3%重量) 中基本上不受影响,在5%重量时略有下降.
  • 白色颜料板保留了超过85%的红外透明度;彩色颜料显示了70-91%的透光率.
  • 关键的红外透明度范围 (8-12μm) 没有受到颜料的影响.
  • 紫外线-VIS测试表明,白色色素板的可见光吸收增加,彩色板的不透明度高.
  • 微结构有效分散了红外辐射.

结论:

  • 可以开发出有色素的LLDPE板,同时保持基本的机械性能和红外透明度.
  • 颜料和度的选择允许可调节的红外和可见光特性.
  • 这些材料适用于需要视觉不透明度和红外透明度的应用,例如热管理和伪装.