Forming process and damping properties of carbon fiber-reinforced polymer concrete

摘要

Carbon fiber-reinforced polymer concrete has good damping property that can be used to produce machine tool beds, spindle boxes, and some other basic mechanical components in order to better satisfy the requirement of high-speed and high-precision machining accuracy. In order to get the influence of different components, the damping model is built on the basis of energy dissipation theory and the damping loss factor is defined as a new parameter to characterize the damping property. Typical samples are prepared and single factor experiments of fiber length, fiber dosage, coal ash's usage, and different surface treatment of carbon fibers are used to validate the aforementioned assumptions. Research results show that the coal ash used in carbon fiber-reinforced polymer concrete plays an important role in enhancing damping. A weak interface bonding condition can get a better damping performance than a strong one. The best damping performance is consistent with reasonable fiber length and its dosage.