Preparation method of composite sol and method for producing solar battery packaging glass by using same

Abstract

The invention relates to a preparation method of composite sol and a method for producing solar battery packaging glass by using the composite sol. The preparation method of composite sol comprises the following steps of: mixing silica-alkoxides, water, basic catalysts and alcohol organic solvents in the volume ratio of 1-100: 0.1-10: 0.01: 1:3-300 to obtain A; adjusting the pH of the A to 8-10; adding inhibitors and dispersing agents in the A and then ageing 1d-10d to obtain a first sol; adding acidic catalysts, the inhibitors and stabilizers in the first sol to form B; adjusting the pH of the B to 2-5; adding metal alkoxides or metal salts in the B and then ageing 5d-20d to obtain a second sol; dissolving the second sol, aqueous silane coupling agents and wetting flatting agents for coatings in mixed environmental-protection solvents and then stirring at least for 0.5h to prepare the compound sol. The preparation method of the composite sol has the advantages of simple process and low cost and can greatly reduce the cost of a coating material used in plating anti-reflection films, and the composite sol coating material basically has no water absorbency so that the prepared anti-reflection films keep higher light transmittance.

Description

technical field [0001] The invention relates to the technical field of solar photoelectric conversion glass manufacturing, in particular to a method for preparing a composite sol and a method for manufacturing solar cell encapsulation glass using the same. Background technique [0002] In the long-term energy strategy, solar photovoltaic power generation has a more important position in many renewable energy sources such as solar thermal power generation, wind power generation, ocean power generation, and biomass power generation. [0003] In the prior art, the solar photovoltaic power generation system is mainly composed of solar cell components, and the photoelectric conversion of solar energy in the solar cell components is generally realized through the absorption of the solar spectrum by silicon wafers. Taking crystalline silicon solar cell components as an example, the theoretical efficiency of solar energy is only about 30%, the current highest efficiency in the labor...

AI Technical Summary

Problems solved by technology

The disadvantages of these existing coating materials are: (1) the low refractive index and good adhesion cannot be effectively combined, and an optimal effect cannot be achieved; (2) the coating materials prepared by the similar sol-gel method do not combine various oxides The materials are aggregated together and cannot form a strong three-dimensional network, so that ordinary nanoporous anti-reflective coatings will have strong water absorption, resulting in a significant decrease in light transmittance when placed outdoors for a long time

In addition, the method for preparing coating materials in the prior art is not only complicated to operate and has a long cycle, but also has poor film-forming performance, hardness performance and salt spray resistance. In addition, under long-term outdoor exposure, The adhesion, hardness, salt spray resistance and other indicators of the anti-reflection coating coated with the above coating solution will continue to decrease with the passage of time, and cannot withstand long-term harsh environments