EPDM基涂层在8～14μm波段红外低发射率的研究

Study on Low Infrared Emissivity Coatings with EPDM Adhesive at spectral range of 8～14 μm

以三元乙丙橡胶(EPDM)为粘合剂,通过优化填料的种类、用量和形貌制备了在8～14μm波段红外发射率为0.14的EPDM/Cu、EPDM/SS涂层。分别对涂层进行红外发射率、反射率、导电率测试,并采用红外吸收光谱(IR)、扫描电镜(SEM)对其进行结构、形貌表征,从涂层反射、电导率、化学结构、微观形貌等角度分析了涂层低发射率的形成机理。对低发射率涂层样品进行耐温性、附着力、硬度等测试表明该涂层的工程应用性能优良。

By optimizing the kind, shape and content of pigments with EPDM as adhesive, low infrared emissivity coatings EPDM/Cu and EPDM/SS of 0.14 at spectral range of 8～14μm were prepared. Based on the infrared emissivity, reflection, electrical conductivity of the coatings were measured while the structure and the surface morphology of the coatings were characterized by infrared absorption spectrum （IR） and scanning electron microscope （SEM）. The principle of the low emissivity coatings was discussed in the aspect of reflection, conductivity, chemical structure, surface morphology and so on. The mechanical performances of coatings were evaluated in terms of heat resistance, adhesion and hardness test. It was shown that the coatings had achieved good performances in engineer applications.