Polyurethane additives can be added to the resin or used as a coating improving it's properties. If your product is polyurethane, chemical grafting can improve the physical, mechanical, thermal, electrical, chemical and gas permeation of polyurethane.
Coatings are applied on the surface of substrates to improve functional properties and durability. Conventional coatings need extensive surface preparation for adhesion and need to build up thickness for performance. This is not the case with APS' grafted formulations. Most APS coatings can be applied in one step with no or minimal surface preparation. In addition, due to the chemistry of APS's chemical grafting process, thinner coatings can be used to achieve a higher degree of property performance. Delamination will not occur due to the chemical bond formed between the coating and the substrate with some subsurface penetration occurring through the use of molecularly small and lightweight monomers.
Typical coating methods can be used such as dip, spray, roll, flow coat, etc. APS coatings can be formulated to be air-dried, however, in the interest of time, heat or some energy source (i.e., UV or infrared lights) can be used.
For additional information regarding grafting Polyurethane additives
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