In recent years, the energy-saving insulating glass industry has developed rapidly. However, due to the lack of basic theory of insulating glass in China, and some material manufacturers exaggerate their propaganda at will for the sake of interests, the actual service life of many insulating glass has failed to reach the time limit. This not only does not achieve the purpose of energy conservation and efficiency, but also increases the social cost. This paper introduces several simple methods to distinguish the advantages and disadvantages of insulating glass.
Take any piece of energy-saving insulating glass from the finished product, and if any of the following phenomena are found, the consumer can judge it as unqualified product and ask for return.
Methods and procedures
1. Use a knife to cut a section of the second seal. If there are many small pores (small honeycomb) in the section, it means that there are two possibilities: one is manual gluing, which will be trapped in the air and generate bubbles; the other is that the second seal produced by low-level technology, which is machine gluing, will also have pores. As long as there are pores in the section, its service life will be very short.
2. Use a knife to cut at any connection angle of the insulating glass to see if the connection angle is effectively wrapped with butyl rubber. The practical theory shows that. For the double seal hollow glass made by the connection angle, the permeable path is mainly at four corners, and the permeable rate is 70%, while the permeable rate at the edge is only 30%. Therefore, the service life of the insulating glass can be greatly extended by using the continuous bent aluminum strip or butyl rubber to effectively wrap the four connecting angles. If the butyl rubber is not used to effectively wrap the four corners, the practical significance of double seal is not great.
3. Use a knife to cut the two sections of the second seal and glass bonding for several centimeters, and then tear the sealant outward by hand. If the glass surface is relatively smooth after tearing and there is no residual glue, it means that there is no adhesive force between the sealant and the glass surface, then the sealing effect can be imagined.
4. supplement. Check whether the standard molecular sieve is used, whether the butyl rubber is continuous (no broken line), if it is not polysulfide rubber, whether the other two sealants have done the phase solubility experiment (do the phase solubility experiment, otherwise it is likely to have endless problems). If the window frame seal is not a standard rubber strip seal, but a common silicone rubber seal, it is necessary to do a solubility experiment between the silicone rubber used and the sealant on the edge of the hollow glass, or it may have endless troubles (some door and window installation companies buy poor oil filled silicone rubber to seal the window frame, and the mineral oil will migrate out and corrode the whole sealing system of the hollow glass after a long time. It will take some time for this kind of evil effect to show, so it must be prevented in advance).
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