Determination of the ballistic, accelerated uv aging and thermal conductivity properties of osb panels supported by waste polypropylene and woven glass fiber

In this study, ballistic properties of OSB (Oriented Strand Board) boards which are reinforced with woven glass fiber and waste polypropylene (WPP) at different ratios were investigated. Three different thickness galvanized metal plates (M1, M2 and M3) were used in the ballistic tests to absorb the initial velocity of the projectile. Ballistic panel forming materials are arranged by hand laying method. The WPP plates are melted on the top and bottom surfaces of the mat forming the panel. The production conditions were as 170°C-175°C temperature, 3.5-4.0 N/mm² pressure and 10 minutes duration. 15 variations were produced in three different stages using 30, 40 and 50 pieces of woven glass fiber, OSB panel and 3 different thickness (0.8 mm,1.2 mm and 1.5 mm) galvanized metal. Ballistic tests were carried out according to NIJ (National Institute of Justice) standard Level IIA category. As a result of ballistic shots, ballistic panel containing 1.5 mm thick metal plate, 50 pieces of woven glass fiber and OSB showed the best resistance. As a result of the study, it was determined that higher mechanical properties of the material absorbing the first speed of the bullet were an important factor in the ballistic performance of the panels. Waste polypropylene samples used in the surface parts of the ballistic panel for UV aging tests were subjected to aging process for 500 hours. As a result of the tests, light stability (∆L *) was realized as 59.3% and it was found that 81.9% of this value reached in the first 300 hours. Total color change (∆E*) was determined as 18.06%. It was determined that the thermal conductivity increased due to density of ballistic panels. On the contrast, thermal conductivity has increased despite decreasing the density in ballistic panels containing OSB.