Investigation of Adhesive Bonding of Polypropylene.

A high-strength bond may be obtained by welding polypropylene parts together commonly-used methods are hot gas torch welding, spin welding, and the Cosom hot platen weld discussed in reference a. However, for all three methods special equipment is required. Consequently, it is desirable to investigate the properties of a number of adhesives which might be used successfully in lieu of welding techniques. The use of adhesives can result in savings of both time and money however, the limitations of adhesives must be understood. Information herein is presented in an effort to acquaint potential users with the various properties of a number of adhesives when used with polypropylene. A comparison is made of the adhesives bond strength, elasticity and shock resistance, effects of water immersion, and cure time requirements bonding techniques are discussed, also.