Three Factors Affecting the Curing of Plywood Adhesives
Guide: If the curing is not good or you don’t know what to pay attention to when curing, it will have a great impact on the bonding of articles, even if the plywood adhesive you use is good enough, it may affect the bonding effect.
The curing reaction of plywood adhesive is a process to obtain and improve the bonding strength and other properties through chemical reaction (polymerization, cross-linking). Curing is the key process to obtain good bonding properties. Only when it is fully cured, the strength will be maximum. Curing is divided into initial curing, basic curing and post curing.
01 Initial curing Under certain temperature conditions, after a period of time to reach a certain strength, the surface has hardened and is not sticky, but the curing is not over.
02 After a period of basic curing, most of the reaction groups participate in the reaction, reaching a certain degree of crosslinking.
03 Post curing In order to improve the bonding performance or to meet the needs of the process, the treatment of the basically cured adhesive is generally carried out at a certain temperature for a period of time, which can supplement the curing, further improve the curing degree, effectively eliminate the internal stress and improve the bonding strength. In order to obtain a well cured adhesive layer, the curing process must be carried out under appropriate conditions.
The curing process of plywood adhesive has a very important influence on the bonding quality. There are three basic process parameters in the curing process: temperature, pressure and time. These three parameters have great influence on the curing of plywood adhesive.
