The effect of high temperature weather on the use of puzzle glue

The effect of high temperature weather on the use of puzzle glue

(1) Everyone knows that cross-linking reaction occurs after the glue is mixed. The isocyanate group (-NCO) in the curing agent forms a complex huge molecular structure after chemical reaction with the hydroxyl group (-OH) in the main agent and the hydroxyl group (-OH) in the wood. When entering the hot season in summer, high temperatures will cause the cross-linking reaction to accelerate significantly. Whether the mixed jigsaw glue can be used in a short time will directly affect the splicing effect of the wood. Here, I would like to specifically note: the degree of chemical reaction between the isocyanate (-NCO) in the curing agent and the hydroxyl group (-OH) in the wood during the cross-linking reaction of the glue, the bonding strength to the board and the fight The water resistance of the board has a direct impact.

(2) When the summer temperature is high, the foaming phenomenon of the panel glue will be significantly enhanced. When this happens, you only need to stir it again, and the foaming phenomenon is immediately weakened. However, we recommend that: Under high temperature working conditions, the amount of glue should be used within 30 minutes. (ie the sooner you use it, the better)

(3) When the summer temperature is high, it will bring inconvenience to the glue application work. When the amount of glue applied is too small or the time taken from the application of the glue to the deposition and pressurization is too much, the film is formed by drying. A problem that causes false bonding. Therefore, no matter which rubber type, the glue should be used in the shortest possible time. And the operator must be skilled in the operation, under the premise of ensuring a good amount of glue, less mixing and quick use.