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Requirements for the use of desiccant for laminated hollow glass

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Update time : 2023-02-14 18:00:00

Ultra-low packaging water, can ensure that the desiccant has strong water absorption performance. The super deep adsorption capacity can ensure that the water in the glass sandwich is fully absorbed, avoid condensation, and fully ensure the thermal insulation performance of laminated hollow glass. Ultra-low falling powder to ensure the beautiful light transmission performance of laminated insulating glass.

The ultra-low nitrogen adsorption capacity ensures that the laminated hollow glass will distort and deform under different temperature conditions, resulting in glass burst. The qualified packing density ensures that the filling usage of desiccant is controlled within the most economical and reasonable range. Reasonable acidity and alkalinity ensure that the laminated insulating glass spacer is not easy to be corroded, salting out and other phenomena.

Among all the raw materials of laminated hollow glass, the performance of sealant and desiccant has the greatest influence on the service life of laminated insulating glass products. The desiccant ensures that all the water vapor sealed inside the laminated insulating glass can be absorbed clean, and the water vapor entering the laminated insulating glass with the passage of time can be absorbed to ensure the low dew point life of the laminated insulating glass.
Laminated hollow glass glue requires two rounds of glue, one structure and one seal, each performing his/her duty. In practice, it is impossible to choose a adhesive with both good sealing and structural properties. In the selection of sealant, the first consideration is the water vapor transmittance, followed by the ability to resist ultraviolet light, and again is the ability to resist temperature change. The high moisture permeability of the glue will lead to premature saturation of the water content of the gas in the closed space, resulting in the loss of condensation and LOW-E film inside the glass, the decrease of light transmittance and heat insulation ability, and the serious development of water. If the desiccant added with chemical reagents is used, its acid and alkali will corrode the metal enclosure, resulting in the disintegration of the product structure, affecting the building safety and product life.

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