Sealing gum for photovoltaic module and preparing method of sealing gum

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

[0001] This application is a divisional application for an invention patent titled: Sealant for photovoltaic modules and its preparation method, application number: 201410451406.1, and application date of September 07, 2014. technical field [0002] The invention belongs to the technical field of sealant, and in particular relates to a sealant for photovoltaic components and a preparation method thereof. The sealant is mainly used for sealing solar cell components. Background technique [0003] With the continuous improvement of the photoelectric conversion rate of green and environmentally friendly solar energy, the market demand for solar photovoltaic modules is increasing, and the assembly and integration of solar photovoltaic modules is extremely important. The ordinary two-component condensation seal in the prior art Glue is no longer suitable for the assembly and integration of solar photovoltaic modules that have special and strict requirements for bonding and aging re...

AI Technical Summary

Problems solved by technology

[0004] 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.