High-damping and high-rigidity composites of Al2TiO5–MgTi2O5 ceramics and acrylic resin
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High-damping materials are widely used in engineering fields. In order to increase the precision of vibration control to different levels, high-damping materials with high-rigidity are required. This study attempts to develop a new high-damping high-rigidity material using ductile ceramics based on the Al2TiO5–MgTi2O5 system, which has many continuous microcracks along the grain boundaries. Ductile ceramics have high internal friction (Q−1 = 0.01–0.037), but very low rigidity (<10 GPa). The rigidity of Al2TiO5–MgTi2O5 ceramics was improved by combining them with a polymer such as acrylic resin. The Young’s modulus and internal friction of the composites of Al2TiO5–MgTi2O5 ceramics and acrylic resin are investigated. They show high-damping capacity (Q−1 = 0.03–0.04) with high rigidity (E = 50–60 GPa), and their properties depend on those of the polymer. Thus, the composites fabricated using the above method can serve as high-damping high-rigidity materials.
KeywordsAcrylic Resin Internal Friction Storage Modulus High Rigidity Base Ceramic
This study was supported by the Ministry of Economy, Trade and Industry for Regional Consortium Research Development Work 2003–2005, and by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (No. 18201014).
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