[China Glass Network] For some of the insulating glass sold in the current glass wholesale market, sometimes the quality will not meet the standard, and it is difficult for ordinary people to distinguish it. Generally speaking, according to industry standards, it is very strict for the central control glass. Every step from the purchase and production of raw materials requires specialized personnel to test. Must be strictly checked to be sold.
First, by ultraviolet irradiation: the hollow glass sample can be detected after continuous irradiation for 168 hours by a 300 W ultraviolet lamp, and stored at a temperature of 23 ± 2 ° C for one week, and no fog, oil or other contaminants should appear on the inner surface of the insulating glass. UV irradiation is mainly to test whether the insulating glass sealant contains organic volatiles that affect the line of sight.
Secondly, the sample was kept at a temperature below 10 ± 0.5 KPa below ambient pressure for 2.5 h, and the thickness growth deviation < 15% was acceptable. Seal inspection is to test the hardness of the insulating glass sealant and whether there is leakage.
Secondly, the samples were subjected to 224 cycles under high temperature and high humidity test conditions (humidity > 95%, temperature between 25 and 55 ° C) in the high temperature and high humidity test. The gas in each circulating hollow glass undergoes a single expansion and contraction, which has a high requirement for the adhesive force of the sealant. It mainly tests whether the adhesive strength of the sealant, the water vapor transmission rate and the effective adsorption capacity of the molecular sieve meet the standard requirements.
The climate cycle test can be carried out later: the climate cycle test simulates the four seasons of the year (cold, heat, wind, rain), and each cycle is subjected to three stages of heating, natural cooling and forced cooling, for a total of 320 cycles. The problem that is easy to occur in the inspection is that the hollow glass is cracked, opened, and the dew point is increased. The aging resistance test is mainly to investigate the comprehensive performance of the insulating glass.
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