A kind of one-component silicone sealant for solar cell module and its manufacturing method

Abstract

A single component silicone sealant used for a solar module and a manufacturing method thereof are characterized in that the structural formula is as the right formula, n is equal to Alpha between 100 and 2000, according to part by weight, Omega-dihydroxyl dimethicone is 100 parts, petroresins is 1-5 parts, activated chalk is 10-40 parts, and silica micropowder is 30-70 parts, all the materials are added into a vacuum kneader and dehydrated and blended for 30-200 minutes under the conditions of the temperature of 100-150 DEG C and the vacuum degree of 0.06-0.099MPa, and the base stock is obtained after cooling; at room temperature, 1-5 parts of pyrogenic silica, 10-17 parts of crosslinkers, 1-3.5 parts of silane coupling agent, 0.5-1.5 parts of catalysts and 1-10 parts of silicone oil plasticizers, according to parts by weight, are further added into a high-speed dispersator or a planetary stirrer filled with the base stock and stirred for 30-150 minutes under the conditions of the vacuum degree of 0.06-0.099MPa and the rotating speed of 200-600rpm, thus preparing the single component silicone sealant. The single component silicone sealant has excellent weathering resistance and yellowing resistance, low moisture-vapor transmission and good storage stability.

Description

technical field The invention relates to a single-component silicone sealant for solar cell components and a manufacturing method thereof, belonging to the field of polymer sealing materials. Background technique Silicone polymer materials have unique properties, such as: excellent weather aging resistance, excellent high and low temperature resistance, good hydrophobicity, excellent biocompatibility, etc., and are widely used in construction, transportation, automobiles, electronics, etc. , aviation, aerospace, textile, machinery, chemical industry, medicine, personal care products (cosmetics) and dozens of industrial sectors and daily life, it has played a role that other synthetic materials cannot replace. Due to the excellent performance of silicone rubber, it is widely used in solar cells. Chinese patent CN1464002A discloses a comb polysiloxane and its prepared electrolyte film, which can be used in dye-sensitized solar cells to replace traditional liquid electrolytes....

AI Technical Summary

Problems solved by technology

In addition, the service life of solar modules is 20 to 30 years, so the service time of silica gel must be higher than this time. Therefore, it is imminent to develop a silicone sealant for solar cell modules that is resistant to weather and anti-yellowing, because yellowing affects Beautiful, the penetration of water vapor will cause mildew, etc.