Studies on Utilization of Plastic Adhesive for Horseshoeing

I . Measurement of Adhesive Strength of Test Pieces

Abstract

Measurement was made on the adhesive strength of test pieces which had combined the hoof-horn with plastic or metal pieces by acrylate adhesives. The test pieces used were made of plastics (acrylic-resin, derlin, and polycarbonate) and metals (ferrous compound, aluminum, and duralumin). The plastic adhesive used was Eastman 910 (cyanoacrylate adhesive, Eastman Kodak Co.). A test piece was put on the hoof-horn piece and plastic or metal piece with "butt joint" and "lap joint". The shear strength and tensile strength were measured by a "Shopper tester". The adhesive strength of almost all the test pieces was 100 kg/cm² five minutes after adhesion at 15 and 40°C. Especially, the adhesive strength of acrylic-resin was greater than any other material. Each test piece became weakened when it had been kept in water at 40°C for 60 minutes.