In the hollow glass products, the bonding strength of the insulating glass sealant is different from that of aluminum and glass in different curing time, and the bonding strength is affected by local environmental temperature, relative humidity and design of the plastic head. Big. The curing of the usual insulating glass sealant in its curing process is divided into three time periods:
1 initial curing. Under a certain temperature condition, after a certain period of time to achieve a certain strength, the appearance of the glue has solidified and is not sticky, but the curing end is not finished. At this time, the cohesive strength and adhesion properties of the glue are very low.
2 basic curing. After a period of time, most of the participation in the reaction, and to achieve a certain degree of cross-linking, the course is usually a week.
3 post cure. It is common to maintain the curing at a certain temperature for a period of time, further improve the degree of curing and can be used to eliminate the internal stress, thereby improving the bonding strength, which is as usual for two weeks.
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