Sealant for photovoltaic module and preparation method of sealant

Abstract

The invention belongs to the technical field of sealants and relates to a sealant for a photovoltaic module. The sealant is characterized by comprising the following raw materials in parts by weight: 100 parts of E-51 epoxy resin, 15-25 parts of 201 polysulfide rubber, 10-15 parts of m-phenylenediamine, 10-20 parts of dibutyl phthalate, 1-3 parts of diethylenetriamine, 30-50 parts of talc power, 10-15 parts of maleic anhydride, 15-20 parts of 651 low-molecular-weight polyamide, 4-6 parts of stannous octoate and 20-30 parts of epoxypropane phenyl ether or diglycidyl resorcinol ether or ethylene glycol diglycidyl ether. The invention also discloses a preparation method of the sealant. The sealant disclosed by the invention has the beneficial effects of convenience in operation, short curing time, good adhesion, low water vapor and gas permeability, good sealing property / weather resistance and UV resistance and wide application temperature range and the long-term performance is maintained.

Description

Technical field [0001] The present invention belongs to the field of sealing gel technology, especially the sealing and preparation methods involved in photovoltaic components. This sealing glue is mainly used for sealing of solar cell components. Background technique [0002] With the continuous improvement of the conversion rate of green and environmentally friendly solar power, the market's demand for solar photovoltaic components is increasing, and the assembly set achievements between solar photovoltaic components are extremely important.Global can no longer be suitable for the assembly integration of solar photovoltaic components such as adhesion and aging resistance.The existing dual -group contraction sealing has a large defects in aging resistance, ultraviolet, adhesion and flame retardant performance. It is not suitable for the field of photovoltaic component sealing and areas with high bonding requirements. [0003] At present, the general single -component organic sil...

AI Technical Summary

Problems solved by technology

[0003] At present, ordinary one-component silicone solar photovoltaic sealant is used in the market; the main disadvantage of this glue is that it takes about 24 hours to cure, the sealing performance is not perfect, and it has a certain corrosion effect on metals.