Conventional coatings adhere to materials by simple mechanical forces that will be easily broken causing peeling or delamination. This is not the case with chemical grafting since the attachment of the coating is accomplished by forming A covalent bond between the substrate and the monomers via the substrate activator. The chemical reaction that takes place provides subsurface penetration in addition to the chemical bond. As a result, much thinner treatments can be obtained while providing longer life and superior performance of the material, without sacrifice of hand, drape, or feel. Typical applications methods can be used such as dip, spray, roll. The chemical grafting formulation comes in contact with the surface of the substrate by any of these methods, The chemical grafting reaction occurs instantaneously upon contact with the Material. Most formulations are water-based. The coatings can be air-dried, however, heat (oven, IR, UV, etc.) may be used to accelerate the drying time. Most formulations will dry in seconds to minutes.
In certain instances, the manufacturer wishes to compound the modification into the raw material in bulk form. Sometimes it is desirable for the substrate activator and monomer system to be incorporated into the matrix of the substrate. The formulation is to be blended with the pellets or resin and will be adjusted to the manufacturers' extruding or molding process.
Typically an add-on of approximately 1-5% is used.
Grafted Properties on Various Textiles
Cotton, polyester, blends, nylon, fibers, yarns, etc. Nonflammability, hydrophobicity, alteration of "hand", anti-static, stain resistance, increased dye receptivity, Improved dyeability, non-flammability, water repellency, UV resistance, sterilization resistance, bactericidal, wrinkle resistance, etc