EFFECT OF PHYSICAL STATE OF POLYMERS ON ADHESIVE-JOINT STRENGTH.

Study of the relationship between the strength of a joint and the physical states of strengthened epoxy composite, measuring the deformation in the joint. The temperature T prime //c of the polymer forming the adhesive layer is an important characteristic which determines the strength properties of the adhesive joint of lapped metal. The introduction of plasticizers in suitable bonding composites, based on epoxy resin, reduces the temperature T prime //c but it is increased by hardening with heating. The use of an adhesive layer made up in thickness of different composites, increases the strength of the joints.