Insulating glass production line Insulating glass processing equipment Glass cleaning machine is used more and more widely, teach you 8 points to extend the use of insulating glass:
1. Reasonable selection of hollow glass structure
When insulating glass is used on the roof, especially hollow glass made of heat-absorbing glass, due to its own weight and snow, when the solar radiation is close to vertical in summer and the wind pressure load is large, thermal stress is directly generated, so the glass is easily broken. A single piece of hollow glass in a portion is preferably subjected to tempering treatment.
2. Strictly control the humidity of the production environment
The humidity of the production environment mainly affects the effective adsorption capacity and residual adsorption capacity of the desiccant. The residual adsorption capacity refers to the absorption of the moisture in the air by the desiccant after the insulating glass is sealed, so that the initial dew point reaches the requirement, and the desiccant also has a certain adsorption capacity. This part of the adsorption capacity is called the residual adsorption capacity, quantitatively speaking, He is equal to the effective adsorption capacity minus the adsorption capacity of the desiccant to adsorb the water consumed in the air in the air layer.
When the humidity of the insulating glass production environment is high, firstly, the moisture in the air is sealed, the adsorption capacity of the desiccant is large, and the residual adsorption capacity is small. It can be seen in the second two that the greater the humidity of the air, the more the water content is. High, when the ambient humidity is increased from 40% to 80%, the moisture content in the air is doubled, and secondly, the ambient humidity has a great influence on the adsorption rate of the desiccant. The higher the humidity, the faster the adsorption rate of the desiccant, the production process Generally, the desiccant is exposed to the air for a period of time. During this time, the adsorption capacity of the desiccant is proportional to the ambient humidity, and the residual adsorption amount of the desiccant decreases with the increase of the humidity, so the humidity is on the insulating glass. The impact of effective use time is critical. In order to extend the effective use time of the insulating glass, it is necessary to control the humidity of the production environment to be low.
3. Reduce the diffusion of moisture through the polymer
(1) Selecting a low permeability coefficient sealant, and selecting an insulating glass sealant with a low gas permeability coefficient is one of the effective measures to reduce the gas diffusion rate. Commonly used sealants for insulating glass production are: T-based rubber, polysulfide rubber and silicone rubber. Their gas permeability coefficient is: butyl rubber â†15g/mdcm, polysulfide rubber 7-8g/mdcm, silicone rubber 1015g/mdcm, the butyl rubber has a small gas permeability coefficient, so the double-sealed glass is used for convenience. Butyl rubber, its effective use period is better than single-sealed insulating glass. Single-sealed insulating glass sealant should be made of polysulfide rubber instead of silicone rubber.
(2) Reasonable determination of the thickness of the rubber layer: It can be seen from the formula (1) that the amount of gas diffusion through the polymer is inversely proportional to the thickness of the rubber layer. The thicker the rubber layer, the less the diffusion amount, so the national standard stipulates: When the sealant is used, the thickness of the adhesive layer is 5-7mm. When the single-layer sealant is used, the thickness of the adhesive layer is 8-12mm. The thickness of the adhesive layer is also an important part to reduce the diffusion of water vapor. Uniformity in thickness.
(3) Reducing the internal and external humidity of the insulating glass layer. The diffusion amount of the gas in the above formula (1) is proportional to the difference of the partial pressure of water vapor inside and outside the insulating glass. Reducing the difference between the inside and outside of the rubber layer can reduce the amount of water vapor diffusing through the rubber layer. . As the insulating glass, the humidity (water partial pressure) of the air layer is preferably as low as possible, and the P value is reduced by reducing the humidity (or partial pressure of water vapor) of the external environment. To achieve this, it is possible to open a drainage hole in the mounting frame so that the water flowing along the surface of the glass to the inside of the frame can be quickly discharged, thereby keeping the periphery of the glass dry to reduce the amount of water vapor diffusion of the insulating glass.
4. When installing, try not to cause pre-stress on the glass, and the installed frame should be flat, and ensure that the surrounding material in contact with the glass is a good elastic material, so that the glass does not produce any deformation;
5, shorten the production process time
The shortening of the production process time here refers to minimizing the contact time of the desiccant with the atmosphere during the production of the insulating glass, reducing the loss of the adsorption capacity, so that the desiccant has a higher residual adsorption capacity, that is, the desiccant is sealed in the Minimize the loss of adsorption capacity before the hollow glass;
6. Reasonably control the air gap of the aluminum spacer frame
The desiccant is generally poured into the spacer frame under the condition of sealing, and the water in the adsorption atmosphere is carried out through the air-sealing slit (hole), and the larger the air-sealing slit (hole) is, the water absorption rate of the desiccant in the production process. The faster the absorption capacity is, the more the loss of effective adsorption capacity is. Therefore, the air gap of the hollow glass spacer frame is as small as possible, as long as the initial dew point of the insulating glass to meet the standard requirements is suitable.
7. Select the desiccant at the appropriate adsorption rate
For insulating glass production, sometimes the desiccant perfusion is not carried out in a completely sealed environment. During the perfusion process, the desiccant is exposed to the air, and the moisture is quickly adsorbed from the air; if the adsorption rate of the desiccant is low, the adsorption amount of the desiccant will be small in the same time, and the effective adsorption capacity is lost. It is also small.
8. Reasonable packaging and transportation
The packaging box or packaging frame of the insulating glass is preferably placed around the glass to allow the pressure to pass through the spacer frame to reduce the damage of the glass, and the plane of the transport glass is consistent with the direction of transportation.
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