Microstructure and Mechanical Properties of Heterogeneous Ceramic-Polymer Composite Using Interpenetrating Network

• Published in: Journal of nanomaterials Vol. 2012; no. 2012; pp. 1 - 6
• Main Authors: Kim, Eun-Hee, Jo, ChangYong, Jung, Yeon-Gil
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2012; Hindawi Limited
• Subjects: Ceramics; Crack propagation; Density; Elasticity; Fourier transforms; Fracture strength; Materials science; Mechanical properties; Microstructure; Nanomaterials; Polymerization; Polymers; Prepolymers; Propagation (polymerization); Stresses; Studies; South Korea
• ISSN: 1687-4110; 1687-4129
• DOI: 10.1155/2012/932059

Prepolymer, which can be polymerized by a photo, has been infiltrated into a porous ceramic to improve the addition effect of polymer into the ceramic, as a function of the functionality of prepolymer. It induces the increase in the mechanical properties of the ceramic. The porous alumina (Al2O3) and the polyurethane acrylate (PUA) with a network structure by photo-polymerization were used as the matrix and infiltration materials, respectively. The porous Al2O3 matrix without the polymer shows lower values in fracture strength than the composites, since the stress is transmitted more quickly via propagation of cracks from intrinsic defects in the porous matrix. However, in the case of composites, the distribution of stress between heterophases results in the improved mechanical properties. In addition, the mechanical properties of composites, such as elastic modulus and fracture strength, are enhanced with increasing the functionality of prepolymer attributed to the crosslinking density of polymer.