Mechanical and thermal properties of polycarbonate. II. Influence of titanium dioxide content and quenching on pigmented polycarbonate |
| |
| Authors: | F Rouabah M Fois L Ibos A Boudenne D Dadache N Haddaoui P Ausset |
| |
| Affiliation: | 1. Centre d'Etudes et de Recherches en Thermique, Environnement et Systèmes, Université Paris XII, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France;2. Laboratoire de Physico‐Chimie des Hauts Polymères, Université Ferhat Abbes, 19000 Sétif, Algérie;3. LISA, FST, Université Paris XII, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France |
| |
| Abstract: | The effects of quenching temperature including different thermal histories on mechanical, physical, and thermal properties of pigmented polycarbonate (PC/TiO2) were investigated. Tensile test, Izod impact strength and heat distortion temperature (HDT) were performed on specimens of 3 mm thickness. Pigment content and quenching temperature are two key factors that affect the properties of the materials. A higher content of pigments results in an increase of modulus of elasticity and a decrease of unotched and notched Izod impact strength, as well as elongation at break. A maximum of yield stress and HDT is obtained at 3% of TiO2, which was considered as the optimum level of pigment. An additional second quenching at 40°C has allowed to improve Izod impact strength and elongation at break of specimens with 3% of TiO2; whereas modulus of elasticity, density, yield stress, and HDT were minimum at this quenching temperature. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007 |
| |
| Keywords: | residual stresses free quenching pigmented polycarbonate mechanical properties |
|
|
