Bonding strength can be said to be an important index to measure the mechanical properties of adhesives, but also a factor of reference value to buy adhesives. You know what? In fact, bonding strength is just a general term, we do adhesive bonding strength detection, mainly from the shear strength, tensile strength, peel strength these three aspects of the test identified. Below, we will have a good talk about adhesive testing shear, tensile, peel strength testing knowledge.

Shear strength and tensile strength are actually the load capacity of the parallel or vertical bonding surface of the adhesive joint. Most of the adhesive shear strength tests are carried out for single-lap structures, but according to the test method of ASTMD3528, the double-lap shear test can balance the stress, so as to reduce the impact of the stripping stress and splitting stress in the single-lap test. The tensile shear strength of the adhesive is measured together.

Peel strength is mainly measured adhesive peel resistance of 180 degrees, mainly for flexible materials and rigid materials bonding. The distribution of stress, peeling Angle and thickness of adhesive layer are the main factors affecting the peeling strength test of adhesive. In the determination of adhesive peeling strength between metal materials, the non-uniform peeling strength test method is usually used.

Bonding strength is very important to the bonding of two or more kinds of adhesive, the same or different materials. As the three axes of bonding strength, shear strength, tensile strength and peel strength can well reflect the mechanical properties of adhesive. Therefore, understanding the knowledge of these three aspects has a positive effect on the production and application of adhesives.