碳纤维增强水泥基复合材料屏蔽性能的研究

Study on the shielding characteristics of carbon fiber reinforced cement composites

现代电子技术的迅速发展不可避免地带来了电磁辐射所造成的环境污染。选择合适的屏蔽材料,利用其反射、吸收、多层反射等功能是消除电磁污染的有效手段。碳纤维除具有高弹性、高模量、低密度、耐腐蚀等优良性能被当作许多复合材料的增强体外,还具有良好的导电性,将其加入到水泥基体中制成碳纤维增强水泥基复合材料(CFRC),不仅使水泥自身力学性能得到改善,而且可作为防止电磁辐射或核辐射的优良屏蔽体。

The rapid development of modern electronic technology brings inevitably into the birth of environmental pollution due to electromagnetic radiation. It is an effective way to eliminate electronic pollution through reflection, absorption and multiple reflections by using appropriate shielding materials. Carbon fiber exhibits good electricity conductivity except for its high elasticity, high modulus, less density, and resistance to corrosion hence excellent reinforcement for composites. Adding carbon fibers into cement matrix can produce carbon fiber reinforced cement composites （CFRC）, by way of which the mechanic properties of cement are improved. Furthermore, CFRC can be used as a fine shielding material against electromagnetic radiation and nuclear radiation.