Point-bonding sealed hollow glass and manufacturing method thereof

Abstract

The invention discloses point-bonding sealed hollow glass. The hollow glass comprises a plurality of pieces of glass, a plurality of spacing bars, a first sealing adhesive, a molecular sieve, and at least one of a second sealing adhesive, a third sealing adhesive and a fourth sealing adhesive; the spacing bars are arranged between the adjacent pieces of glass; the spacing bars are arranged on theperiphery of the glass in a segmented mode to form a closed spacing frame; the molecular sieve is filled in the spacing frame; the first sealing adhesive is arranged between the glass and the spacingbars; the second sealing adhesive is arranged between the adjacent pieces of glass and is positioned on the outer side edges of the spacing bars; or the third sealing adhesive is arranged between theadjacent pieces of glass and located on the outer side edges of the spacing bars; or the third sealing adhesive is arranged between the adjacent pieces of glass and located on the outer side edge of the second sealing adhesive; or the fourth sealing adhesive is arranged at the edge parts of the side surface and the outer surface of the adjacent glass. The point-bonding sealed hollow glass is simple in technological process, high in mechanization and automation degree, short in production period, high in production efficiency and good in product quality, and the service life of the hollow glasscan be greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a point-bonding and sealing hollow glass and a manufacturing method thereof. Background technique [0002] With the continuous improvement of people's living standards in our country, the requirements for living comfort are getting higher and higher, and heating and air-conditioning facilities are bound to be continuously increased, so building energy consumption will increase significantly, accounting for the proportion of the total energy consumption of the whole society. will get bigger and bigger. Therefore, building energy conservation is an important measure for our country to ensure national energy security and build a conservation-oriented and environment-friendly society. [0003] Insulating glass is a glass product in which two or more pieces of glass are evenly spaced at the edge by a spacer frame, and bonded and sealed with the periphery of the glass on th...

AI Technical Summary

Problems solved by technology

[0005] The edge sealing of the existing insulating glass generally adopts two seals. The first seal is between the spacer frame and the glass. Generally, butyl glue is used. Butyl glue belongs to self-adhesive and has good water vapor barrier ability. The main factor that enters the hollow layer, but because the spacer frame is made of spacer strips, there is at least one seam, and there are two sides at the seam that are not sealed with butyl glue, so there is a sealing gap, and the glass and the spacer frame pass through The heat insulation performance is also poor when the sealant is connected together as a whole

The second seal is located between the outer side of the spacer frame and the two pieces of glass. Generally, structural adhesives such as silicone adhesives and polysulfide adhesives are used. The main function of structural adhesives is to provide bonding strength, and their sealing performance is poorer than that of butyl adhesives. , its main disadvantage is the long curing time, at least 24-48h static curing time is required, during which the insulating glass cannot move, otherwise it is easy to cause dislocation between the two pieces of glass and damage the butyl sealant layer, which is harmful to the structure The mechanical properties of the glue also have adverse effects

Therefore, the main disadvantages of existing insulating glass edge seals are: ①Butyl rubber has good sealing performance, but it does not fully seal the hollow layer; structural adhesive can fully seal the hollow layer, but the sealing performance is poor; ②The curing time of the structural adhesive is too long, which not only seriously affects the production efficiency, but also has an adverse effect on the product quality; ③The spacer frame and the glass are bonded continuously, and the heat insulation performance is not good, which is easy to form a cold bridge, thus The edge of the insulating glass will lose a lot of heat, and it is easy to condense, etc.

[0006] Molecular sieves must be added to the spacer frames of the existing insulating glass as desiccant to absorb the water vapor in the hollow layer and the water vapor entering the hollow layer through the edge of the insulating glass. Molecular sieves will continue to absorb moisture in the environment during the period of pouring into the glass. Since this period lasts for more than ten minutes to tens of minutes, in environments with high humidity, especially in summer, the molecular sieves will A large amount of moisture in the external air is absorbed, thereby greatly shortening its life, thus affecting the service life of insulating glass

[0007] The edges and corners of the existing insulating glass are exposed, and it is easy to bump and produce gaps and microcracks during the handling process. Glass is a brittle material, and the breakage of ordinary glass and the self-explosion of tempered glass are mostly caused by microcracks, so exposed The edges and corners of insulating glass are important factors leading to glass damage

[0008] The service life of the existing insulating glass in the national standard is only 15 years, while the service life of the building is as high as 70 years. During the life cycle of the building, the insulating glass used needs to be replaced many times, which not only causes a lot of manpower and material resources and waste of financial resources, but also bring a lot of unnecessary trouble to users

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