Atık Hematitin Dolgu Malzemesi Olarak Hint Yağı Tabanlı Poliüretan Yapıştırıcılarda Kullanılabilirliğinin Araştırılması

Polyurethane adhesives are widely used in footwear, textile, construction and automotive industries. Adhesives are the most widely used in automotive filters. Filling materials commonly used in filters are lime and calcite. However, alternatives are being sought to reduce cost instead of these materials. Hematite a by-product of iron and steel industryhas been chosen as the filling material of the polyurethane adhesive to be used in this study since it will reduce the cost compared to the alternatives. In this study, different ratios of lime, calcite and hematite were used in the formulation and the resultant polyurethane adhesives were compared. Specimens for tensile test were prepared by applying the to a 21x25 mm area between the filter paper and the metal. Adhesion was not observed in some of the prepared samples, the adhered ones were broken from the paper during the tensile test. In order to examine the bonding ability of the adhesive the bonding surface was reduced to 5x25 mm. Nevertheless, the tensile test showed that the samples again broke from the paper. Secondly, the prepared adhesives were applied as 21x25 mm between the metal and metal for tensile testing. From the experimental studies made with samples prepared according to the standards of single lap connection with the universal tensile tester, it was found that the waste hematite particles added to the adhesive were used with lime and the polyurethane adhesion joints improved the slip performance by 68.70% compared to those used only with calcite.