Methods to Increase Adhesion Force of Epoxy Floor Coating

After the completion of epoxy floor construction, poor adhesion between the epoxy floor coating and the cement or concrete base will lead to cracking, and even serious problems such as overall coating delamination, which greatly shortens the service life of the epoxy floor.

To avoid such defects, epoxy floor constructors routinely conduct adhesion tests on epoxy coatings. Common test methods include standard adhesion test, blade adhesion test, tape adhesion test and cross-cut test. However, adhesion inspection is carried out after the floor construction is finished, which may affect project handover. Even so, all formal and professional construction contractors will strictly perform this procedure, as it is a crucial quality control checkpoint for epoxy flooring.

In terms of weather factors, such as temperature alternation and high humidity in rainy seasons, the epoxy coating under construction will undergo volume expansion and external stress impact. Such natural factors cannot be artificially controlled and are one of the main causes of coating failure and adhesion reduction.

In addition, the viscosity, fluidity, fineness and curing time of epoxy floor paint also play a key role. The interaction between epoxy coating and base layer takes place simultaneously during film formation, which is a dynamic process. This process is further affected by the proficiency of construction workers, standard construction requirements and changes in the construction environment.

Up to now, despite extensive technical research and efforts by professionals in the epoxy flooring industry, accurate and unified test data have not yet been achieved. In recent years, on-site monitoring instruments and methods have been gradually applied in field coating work. Among them, the portable pull-off adhesion tester is recognized as a relatively accurate testing method.