Application of 3A molecular sieve in insulating glass
Date: 2019-11-04 10:42:21Insulating glass is a new type of building material with good heat insulation, sound insulation, beautiful appearance and low weight. It is a high-performance sound-insulating glass made of two pieces (or three pieces) of glass, which is bonded with an aluminum alloy frame containing a desiccant by using a high-strength and high-air-tight composite adhesive. Insulating glass has superior performance to ordinary double-layer glass, so it has been recognized by all countries in the world. Insulating glass is to separate two or more pieces of glass with effective support and seal the periphery to form a dry gas between the glass layers. Space glassware. Its main materials are glass, warm edge spacers, angled plugs, butyl rubber, polysulfide rubber, and desiccant.
The materials that can be absorbed by the desiccant in the insulating glass seal are water, air, argon, helium, neon, sulfur hexafluoride and organic solvents. The U value and noise reduction performance of the insulating glass are improved by filling the spacer layer with argon, helium, neon, and sulfur hexafluoride gas. Organic solutions may come from the aesthetics of the sealing material, cutting oil and paint. Type carbon molecular sieve only absorbs water, 4A molecular sieve absorbs water, air, argon, helium, does not absorb helium, sulfur hexafluoride and solvent. Model 13X molecular sieves and silica gel absorb all of these materials.
Since there is a 3A molecular sieve inside the hollow glass that can adsorb water molecules, the gas is dry, and when the temperature is lowered, the inside of the hollow glass does not cause condensation, and at the same time, the dew point on the outer surface of the insulating glass is also raised. For example, when the outdoor wind speed is 5m/s, the indoor temperature is 20°C, and the relative humidity is 60%, the 5mm glass starts to dew at the outdoor temperature of 8°C, while the 16mm (5+6+5) insulating glass is under the same conditions. Condensation occurs only when the outdoor temperature is -2 °C. The 27 mm (5+6+5+6+5) three-layer insulating glass begins to dew at an outdoor temperature of -11 °C.