With the improvement of the level of modern home decoration, people tend to enjoy a quiet and comfortable living environment, so when choosing doors and windows, they prefer to choose aluminum alloy hollow glass windows, but many friends are puzzled that the insulating glass of doors and windows will fog. What is going on here?
This fogging phenomenon is actually caused by the unqualified manufacturing process of the aluminum alloy door and window insulating glass. To understand the reasons for the formation and the solution, we must first understand the manufacturing process of the insulating glass.
The basic manufacturing process of insulating glass consists of glass cleaning, molecular sieve screening, butyl sealant coating, splicing, and second sealing adhesive. Every aspect is related to the choice of materials and the proficiency of the operators and the quality of the processing. Jinhua tempered glass manufacturer
Glass cleaning
Glass cleaning is the primary measure of the quality of the appearance. However, in the current production, many manufacturers, especially small manufacturers, often pay insufficient attention to cleaning glass, resulting in a large number of unqualified products entering the market. If the oil and sweat on the glass cannot be thoroughly washed away, the adhesion of the sealant to the glass is greatly impaired, thereby reducing the sealing effect of the insulating glass. Therefore, the sealing property of the insulating glass is largely closely related to whether the glass is clean or not. Wenzhou fireproof glass
Desiccant
The purpose of the desiccant is to maintain a satisfactory initial fog point for the insulating glass. Therefore, a qualified desiccant 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 fog point of the insulating glass will rise, so that the possibility of atomization is extremely great.
The edge of the insulating glass fails to seal, which means that the door and window lose their proper function. Not only the energy-saving performance of the door and window design can not meet the requirements, but also the consumer can not see the outside world through the fogging air layer, affecting the transparency of the insulating glass. And reduce the heat insulation effect, the long-term fogging will cause mildew or alkali accumulation on the inner surface of the glass, resulting in white spots, which seriously affect the appearance quality of the insulating glass. Jinhua fire glass customization
It can be seen that the selection of high quality insulating glass sealant is the primary and key to prevent the atomization of the insulating glass. The selected insulating glass sealant should meet the requirements of national or industry standards, and the first and second sealants of the double-layer insulating glass should be suitable and should not be mutually soluble or reacted. Otherwise, the glass surface may be contaminated or even aged.
Ply-coated
The splicing and the second sealant determine the overall quality of the insulating glass. If there is a gap between the two sealants, it will cause air leakage. At the same time, attention should be paid to the application of a thin second sealant. After installation for a period of time, it is affected by environmental temperature changes, sun exposure and wind pressure. 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. Jinhua fire glass customization
The double-layer insulating glass produced requires a parking period of about 3 days, so that the double-layer insulating glass sealant has sufficient time for chemical bonding to achieve a sealed 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 appear in a short period of time. The phenomenon.
Insulating glass assembly
Jinhua fireproof glass is customized when the insulating glass is assembled, if the insulating glass sealant is in contact with other sealing materials (especially the curtain wall weatherproof sealant), and these sealing materials contain plasticizing components capable of dissolving butyl sealant, these plasticizing The component migrates to the surface of the first sealant through the second seal of the insulating glass, thereby dissolving the first sealant to cause thinning and runny. Therefore, it is necessary to do the corresponding compatibility test when assembling the insulating glass, select the sealing material compatible with the insulating glass sealant, and select the sealing material of the same manufacturer to reduce the occurrence of such phenomena.
Reducing and eliminating the fogging phenomenon of the insulating glass of aluminum alloy doors and windows depends on each link of the production of aluminum doors and windows, and it is necessary to closely monitor the entire production process to prevent unqualified products.