High-efficiency solar heat absorbing material and preparation method thereof

Abstract

The invention provides a high-efficiency solar heat absorbing material and a preparation method thereof. The high-efficiency solar heat absorbing material is prepared from organosilicone resin, graphene, carbon fibers, butyl acrylate, hydroxylated linseed oil, sodium lauryl sulfate, nano-powder, metal nitrate, a curing agent, a light absorbing agent, a film former, polyethylene glycol, an organicsolvent and a polyether modified silicone oil defoamer. The heat absorbing material has excellent solar energy absorption performances, utilizes a heat conductive material having photocatalytic migration properties, increases a solar energy absorption range and the heat conduction performance and has a long service life. The preparation method has mild reaction process conditions, realizes a low production cost and is suitable for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of solar energy materials, and in particular relates to a high-efficiency solar heat absorbing material and a preparation method thereof. Background technique [0002] Solar thermal utilization is an important form of solar energy utilization, which refers to the process of collecting solar radiation energy with solar collectors and converting it into thermal energy through the interaction with substances for utilization. As the problem of energy shortage becomes more and more serious, enterprises invest more and more in energy saving and emission reduction measures, which makes people's research on solar thermal utilization more and more extensive and in-depth, and solar thermal utilization will have a broader development prospect. [0003] Solar heat absorbing material is the core functional part for absorbing light energy in the solar light absorbing system, and is usually used in solar heat collecting el...

AI Technical Summary

Problems solved by technology

At present, black organic coatings, such as black fluorocarbon resin, black epoxy resin, black polyurethane resin, etc., are sprayed on the heat-absorbing plate core of flat-plate collectors in the market. As a binder, ordinary carbon black or black pigment is used as a color body, so there are the following problems: 1. The material is not weather-resistant, and it is easy to pulverize and fade prematurely; 2. There is no spectral selectivity, so that the emissivity of the material is very low. High, resulting in low thermal efficiency of solar panel collectors

Although the solar heat-absorbing materials prepared by the above two prior art have good heat-absorbing effects, the preparation process is complicated and the materials involved are relatively expensive, and the weather resistance of the heat-absorbing materials is not ideal, which leads to its service life not long