Polyurethane Additives

Application Methods

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. 

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APS can develop additives to incorporate into the raw material/resin prior to extruding or molding. In this case, the new properties will penetrate the matrix of the material. APS chemists will adjust the formulation to conform to the processing parameters used by the manufacturer. Due to the molecular bond formed by APS  process, the new properties will not migrate and leach from the material over time, even under severe conditions. 

Laminates (Adhesives) 

APS chemists have extensive experience in bonding the same or different substrates together. Materials that are difficult to adhere to are effectively bonded with APS' process. Consequently, substrate failure will occur before adhesion failure. In addition, if two substrates with different coefficients of thermal expansion are bonded, an APS developed adhesive's bonding action will not be affected. Such is not the case with conventional adhesives which can not withstand the varying expansion and contraction of different substrates. 

Application of all APS chemical grafting formulations can apply at ambient temperatures and normal atmospheric conditions. 

For additional information regarding grafting Polyurethane additives

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