| 纤维基低发射率隔热材料制备研究 |
| 投稿时间：2022-07-07 修订日期：2022-07-14 点此下载全文 |
| 引用本文：吴仪,杨文芳,王婵铭,张城铭,李怡涵.纤维基低发射率隔热材料制备研究[J].红外,2022,43(10):23~31 |
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| 中文摘要:兼具表面低红外发射率和隔热性能的功能纺织材料在工业及军事领域有着广泛用途。从利用低表面发射率和控制物体表面温度两方面，研究制备具有低红外发射率且隔热性能良好的功能材料。选用聚丙烯酸酯(PA)作为成膜粘结物质，研究了铝粉的粒径及用量对涂层红外发射率的影响；以不同的空心微珠为隔热填充剂，并对其用于涂层织物的隔热效果进行探究。最后，将低发射率涂层与隔热涂层进行复合，制备出兼具低发射率与隔热性能的材料。结果表明，采用400目片状铝粉时的发射率比采用600目时更低，20%的400目片状铝粉的涂层胶所制备的涂层表面的红外发射率低至0.237。由于空心微珠是较好的隔热填料，以共混15%的玻璃微珠为隔热层，以共混20%的400目片状铝粉为低红外发射率涂层，所制备的纤维基复合涂层材料的发射率为0.507，热体试样与背景温差为3.75℃，具有较好的隔热性能和低红外发射率。 |
| 中文关键词:热红外 低发射率 隔热 涂层整理 |
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| Research on Preparation of Fiber-Based Low-Emissivity Thermal Insulation Materials |
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| Abstract:Functional textile materials with low infrared emissivity and heat insulation are widely used in industrial and military fields. In this paper, the functional materials with low infrared emissivity and good heat insulation performance are prepared from the two aspects of low surface emissivity and controlling the surface temperature of objects. The effects of particle size and dosage of aluminum powder on infrared emissivity of coating are studied by using PA as film forming bonding material. Different hollow microbeads are used as thermal insulation filler, and the thermal insulation effect of coated fabric is studied. Finally, the low emissivity coating and heat insulation coating are combined to produce a material with low emissivity and heat insulation properties. The results show that the emissivity of 400 mesh sheet aluminum powder is lower than that of 600 mesh sheet aluminum powder. The infrared emissivity of the coating surface prepared by 20% 400 mesh sheet aluminum powder coating adhesive is as low as 0.237. Since hollow microbeads are good thermal insulation fillers, 15% glass microbeads are used as thermal insulation layer, and 20% 400 mesh flake aluminum powder is used as infrared low emissivity coating. The emissivity of the prepared fiber-based composite coating material is 0.507, and the temperature difference between the hot body sample and the background is 3.75℃. The material has good thermal insulation performance and low infrared emissivity. |
| keywords:thermal infrared low emissivity thermal insulation coating finishing |
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