What is a paint hardener?
Similarly one may ask, what is the use of hardener in paint?
Hardener, (Or activator as it is known in the business) drys the paint by chemically cross-linking the paint into the hardener, making a urethane mix that is much more impervious to chemical attack. Paint will never cure fully if it is not activated.
Additionally, how much hardener do I add to paint? You will normally mix 4 parts paint to 1 part hardener 1 part reducer. If you need to mix part of the paint to do door jams then you should follow the same ratio. Factory Acrylics such as Kirker paints will come in a 3 quart gallon and require a full quart of hardener to be added.
Similarly, what is paint hardener made of?
The primary ingredient in paint hardener is sodium polyacrylate, which is a crystallized salt product. The salt crystals absorb moisture very quickly and turn the paint into a solid, rubbery substance.
Is paint activator the same as hardener?
From a general standpoint activators and hardeners do the same thing; initiate cure of 2K products. However, you must use only the activator each product calls for on the tech sheet and not interchange hardeners/activators from different brands or products.