Effect of Organosilicon Additives on Surface Segregationof Components of Epoxyurethane Adhesive Compositions and Their Adhesive Behavior

摘要

The effect of organosilicon additives of various molecular weights—phenyltributyleneglucoxysi-lan (PBS) and phenyltrioligooxypropyleneglycoxysilan (KMS105,)—on the surface segregation of compo-nents of epoxyurethane adhesive compositions and their adhesive behavior is studied It is shown that the sur-face concentration of components differs considerably from that of the volume as a result of their selectiveredistribution under the influence of a solid surface. The dependence of the surface segregation of compo-nents of epoxyurethane compositions and their adhesive behavior on the concentration of the mentionedadditives exhibits an extreme behavior (the effect of small additives).