Cleaning and maintenance of insulating glass
[China Glass Net] Insulating glass was invented by Americans in 1865. It is a new type of building material with good heat insulation, sound insulation, beautiful appearance and low weight. The use of insulating glass can improve the safety performance of the glass. In the case of using the original sheet glass of the same thickness, the wind-resistant strength of the insulating glass is 1.5 times that of the ordinary single-piece glass. But how much do you know about the cleaning and maintenance of insulating glass?
The basic manufacturing process of the insulating glass consists of cleaning of the glass, filling of the molecular sieve, application of the butyl sealant, lamination, and application of the second sealant. The secondary seal material should consider the performance of the edge seal, the protection provided by the entire glass system, and the environment in which the two sealant is exposed during the application process. Each link is related to the skill of the operator and the quality of the process.
1, glass cleaning
The first step is to clean the insulating glass, which is also an important part to ensure the sealing of the insulating glass. The oil stains and sweat on the glass are not thoroughly cleaned, which greatly weakens the adhesion of the sealant to the glass, thereby reducing the sealing effect of the insulating glass. Special care should be taken to select the conditions considered for the desiccant, sealant and spacer, provided that the glass is cleaned. The sealing of insulating glass is based to a considerable extent on whether the glass cleaning is clean, and the cleaning of the glass is the main measure of the quality of the appearance. Therefore, users need to strengthen the emphasis on glass cleaning.
2, the choice of desiccant
The desiccant has three functions: adsorbing moisture sealed in the air, adsorbing the volatile organic solvent, and adsorbing moisture entering the Air Layer during the life of the insulating glass. The purpose is to maintain a satisfactory initial dew point for the insulating glass. Therefore, the selection of a suitable desiccant condition must simultaneously satisfy the three functions that the desiccant should have. If the desiccant has poor adsorption capacity and cannot effectively adsorb the moisture that has entered the air layer by diffusion, the moisture will accumulate in the air layer, the water pressure will increase, and the dew point of the insulating glass will rise, so the possibility of atomization is great. The choice of desiccant must take into account their respective properties. The choice of desiccant is directly related to the type of insulating glass glue selected and must be considered together.
If the edge of the insulating glass fails to seal, it means that the window loses its proper function. Not only does the window design fail to save energy, but the consumer can't see the outside through the foggy air layer, affecting the transparency and reducing the heat insulation effect. Long-term fogging may cause mildew or alkali precipitation on the inner surface of the glass, resulting in white spots, which seriously affect the appearance of the insulating glass. It can be seen that to prevent the atomization of the hollow glass, it is the primary and the key to select a high quality insulating glass sealant. And the front channel and the second sealant of the double-channel insulating glass should be suitable, and should not be mutually soluble or reacted, otherwise the glass surface may be contaminated or even aged.
3, double-channel insulating glass coating - splicing - coating
The splicing is the middle ring of the double-pass hollow glass, and the coating of the butyl rubber before the film determines the overall quality of the insulating glass. Therefore, the production process should be strictly controlled during production, to prevent leakage coating, gel breaking phenomenon and negligence of sealing. Never allow hidden dangers of gas leakage, seal the front tube, and apply the second sealing glue after splicing. According to the manufacturer's regulations, a reasonable ratio is used to make the two components fully mixed, and the glue is accurate, avoiding the phenomenon of under-glue and multi-gel. The second process of double-door insulating glass is successfully completed. If there is a gap between the two sealants, it will cause air leakage. At the same time, it should pay attention to the application of the thin second sealant. After installation for a period of time, it will be affected by the change of ambient temperature and the slick pressure of the sun. Cracks will form (even if very small cracks are present), and moisture may slowly enter the glue layer, forming atomization, losing its seal and losing the sealing effect.
The finished double-channel insulating glass requires a parking period of about one week, so that the double-channel insulating glass sealant has sufficient time for chemical bonding to achieve a better sealing state. If the parking period is too short, the sealant does not have sufficient time to bond. After handling, vibration, sun exposure, especially rain, the sealing effect of the sealant will be greatly reduced. In severe cases, fog will occur in a short period of time. The phenomenon.
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