Applied research on powder coatings in the field of photovoltaics (I.)

Coatings Industry:
: This paper focuses on a new type of acrylic powder coating based on GMA acrylic system and its application in photovoltaic panel modules. This acrylic powder has a 94% light transmission rate and is as transparent as glass.
20min@
170 degrees C can fully cure the molding
China
. This powder has excellent weather resistance and heat resistance, 3000hUVB after exposure color difference of less than 1.5, the preservation rate of more than 95%, to reach the outdoor 20 years of weather resistance level, wet heat 1000h after the color difference of less than 1.5, the preservation rate of more than 90%. This new powder coating is a new attempt in the powder coating industry, whether in raw materials, technology, process, or application, and is a major breakthrough in the development, manufacture, performance and application of powder coatings.
, energy contradictions and environmental problems are becoming more and more prominent, and the development of all kinds of clean energy is an inevitable trend. In recent years, the rapid development of the photovoltaic industry, technology updates gradually accelerated, the current photovoltaic industry is diversified product development, high reliability, high power, low installation costs of various functional components research and development has become a direction of the development of photovoltaic modules. Traditional glass photovoltaic modules weigh more than 10 kg per square meter, plus the installation of support structure, photovoltaic modules per square meter weight of at least 12 kg or more. When it is applied to the top of the building or the wall and other occasions, the support structure of photovoltaic modules put forward higher requirements, increasing the construction difficulties and installation costs, as follows: in the building top or wall installation process, there is weight, installation labor intensity, implementation difficulties;
, it is necessary to find a new type of packaging material for photovoltaic modules to solve the problem of the weight of packaging materials in the existing photovoltaic module package structure. This new material should have the advantages of light weight, easy bending, not easy to break, and at the same time meet the requirements of anti-ultraviolet, anti-aging, impact-resistant, fire-resistant and other PV industry technical standards.
Figure
1
Package Material Structure Diagram
It is a good choice to replace traditional glass with a powder coating that is molded directly by thermodyzepression to make transparent, weather-resistant, water- and chemical-resistant, yet soft and lightweight packaging materials instead of conventional glass. After many arguments and early theoretical studies, we decided to use acrylic system to develop this product. Acrylic powder coatings with high transparency, good weather resistance, good chemical resistance, good immersion, high reaction activity advantages, can meet the requirements of the solar energy industry. Because the vast majority of powder coatings on the market acrylic resin is targeted at the automotive wheel industry, its weather resistance, chemical resistance, reaction activity, etc. do not meet the requirements of the solar industry. Our professional acrylic suppliers in the United Nations have developed special acrylic resins for the solar energy industry.
unremitting efforts, acrylic products have been through the customer stable mass production, customer feedback performance after use is stable, the performance indicators can meet the packaging standards of the photovoltaic industry requirements. Among them, the transmission rate reached 94%, 170
degrees C
can be fully cured molding, 3000 hours after UVB exposure color difference of less than 1.5, the preservation rate is greater than 95%, to reach the outdoor 20 years of weather resistance level, wet and hot 1000 hours after the color difference of less than 1.5, the preservation rate is greater than 90%, the force of frost testing and cold and hot cycle testing have reached the requirements of the photovoltaic industry.