Low-cost solar film reflector material

Abstract

The invention discloses a low-cost solar film reflector material which comprises a back adhesive protecting film, back adhesive, a substrate film, a plated film reflecting layer and a plated film protecting layer, wherein one side of the substrate film is subjected to sensitization processing and tightly bonded with the back adhesive, the other side of the substrate film is a smooth surface and is combined with the plated film reflecting layer, and the upper surface of the plated film reflecting layer is combined with the plated film protective layer. The plated film reflecting layer comprises three layers of plated films sequentially including an aluminum layer, a silver layer and a magnesium fluoride layer. Sun light reaches the silver layer after passing the plated film protective layer, after being reflected by the silver layer penetrates the plated film protective layer to reach a solar utilization apparatus or device. The low-cost solar film reflector material effectively solves the problems of ultraviolet ray block-out and surface steam block-out. Since no ultraviolet light absorbent is needed, and the optical performance of the low-cost solar film reflector material remains unchanged after long-term use, the manufacture cost of reflection thin film materials can be greatly reduced, and the service lifetime is prolonged.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, in particular to a low-cost solar thin film reflector material. Background technique [0002] At present, the popularity of solar thermal utilization depends on the cost of solar thermal utilization system. Due to the low-density characteristics of solar energy, high-temperature heat generated by solar energy generally needs to concentrate sunlight. At present, there are trough-type concentrating systems, dish-type concentrating systems and tower-type concentrating systems with relatively mature technologies. The trough concentrating system is mainly used for solar thermal power generation and industrial steam generation. The temperature required for solar thermal power generation is above 450 degrees, while the temperature required for industrial steam is between 100-300 degrees. At present, the trough-type concentrating system is difficult to be accepted by ordinary industrial...

AI Technical Summary

Problems solved by technology

At present, there are glass mirrors, aluminum-based mirrors and thin-film mirror materials for mirrors. The production of glass mirrors and aluminum-based mirrors needs to consume a lot of fossil energy, and thin-film mirror materials consume much less energy; thin-film mirror materials The main problem is its weather resistance, and the cost of solving it is still high

U.S. Patent US7612937B2 proposes to plate copper on the back of silver to block ultraviolet rays, but some ultraviolet rays still pass through, because copper is not the best blocking material for ultraviolet rays

[0005] The object of the present invention is to solve the defects of the above-mentioned thin film reflector materials, and provide a solar thin film reflector material with low cost, long service life, effective blocking of ultraviolet rays and enhanced water vapor blocking on the surface

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