This report presents the experimental results for some elastic modules of three - phase polymer composite reinforced with glass fibers and titanium oxide particles of different volume ratios. A comparison between experimental and theoretical results shows good agreement. | Vietnam Journal of Mechanics, VAST, Vol. 33, No. 2 (2011), pp. 105 – 112 EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES FOR A THREE - PHASE POLYMER COMPOSITE REINFORCED BY GLASS FIBERS AND TITANIUM OXIDE PARTICLES Nguyen Dinh Duc1 , Dinh Khac Minh2 1 University of Engineering and Technology 2 Shipbuilding Science and Technology Institute Abstract. Nowadays, composite materials are applied in many fields. The physico mechanical properties of the material can be improved by adding reinforced fibers and particles. Many scientists pay attention to the calculation for elastic modules of three phase composite materials. This report presents the experimental results for some elastic modules of three - phase polymer composite reinforced with glass fibers and titanium oxide particles of different volume ratios. A comparison between experimental and theoretical results shows good agreement. Key words: Three - phase composite (polyester, glass fiber, titanium oxide), elastic modulus, experimental. 1. INTRODUCTION Composite material consists of two or more component materials to obtain a new material with better properties. The components are matrix material and filled materials (reinforced or additive). The function of matrix material is to unite the components, assure the resistance to heat and physicochemical loads, while the filled components are used to improve the mechanical properties (stiffness and strength) of the composite [5, 6, 7, 10]. The reinforced components used usually are fibers and particles. Fibers can increase the stiffness, while particles can decrease the fracture, plastic strain and improve the water and gas proof ability of the composite. Thus, the addition of fibers and particles can make composite become more perfect, to satisfy more and more requirements of modern technology. Having advantages such as: light weight, resistance to heat and environmental loads, composite materials are widely applied in many fields: from industry, construction, machine
