Recently, ZGDY Film Materials Research Institute has made new breakthroughs in the development and application of high-performance UV reflective films, successfully achieving high UV light reflection and low infrared light reflection of high-performance UV reflective films, and developed a new product with high UV reflectivity. Highly durable reflective film. This achievement broke the foreign technology blockade and reached the world's advanced level.
Ultraviolet light reflective film is the core component of sun tracking accelerated aging test equipment. The super-accelerated sun-tracking concentrating accelerated aging test equipment developed in the United States based on high-performance ultraviolet light reflective film has a maximum acceleration rate of 60 times, and is widely used in the rapid evaluation of the durability and safety of military and civilian equipment products.
There are two technical difficulties in the development of high-performance UV reflective films, namely, the realization of high UV reflectivity, the realization of low infrared reflectivity, and the improvement of weather resistance. Ultraviolet radiation, temperature and humidity are the three main factors that cause the aging of polymer materials. Reinforcing the ultraviolet radiation received on the surface of the material to achieve accelerated aging of the material is one of the most important ways to evaluate the weather resistance and life prediction of equipment products and components. First, the accumulation of infrared light will lead to a sharp increase in the temperature of the material, resulting in a change in the aging mechanism of the material, and affecting the accuracy of the weather resistance and service life prediction of equipment products.
ZGDY redesigns the film structure in combination with software calculation. Through continuous optimization of the coating process, the reflective film achieves high ultraviolet light reflection and low infrared light reflection. At the same time, combined with formula development and weather resistance test, after years of research and research, Guozhong Office has recently successfully developed a reflective film with high ultraviolet light reflectivity and high durability. , Infrared and visible light (500 ~ 2500nm) average reflectivity ≤ 6%, breaking through the foreign technology blockade, reaching the world's advanced level. It is worth noting that the average UV reflectance of the high-performance UV reflective film decreased by ≤1% after one-year exposure test, showing good weather resistance.
The breakthrough in high-performance UV reflective film technology can not only provide core technical support for the localization and expanded application of China's solar tracking concentrating accelerated aging test equipment, but also provide the next step for China Electric Research Institute to develop highly accelerated solar tracking concentrating aging test equipment. It has laid a good foundation, and can also expand its application in optical imaging, laser, and optical communication devices, and provide support for the localization of precision optical instruments.