Nanometer carbon tube/epoxy resin composite material and its preparation method

Abstract

The invention relates to a nanometer carbon tube / epoxy resin complex material and its producing technique. The technique procedures are that: add nanometer carbon tube by 0.01 to 10.0 wt percents into the raw material of nanometer carbon tube, phenolic aldehyde epoxy resin and #593 solidificating medium. The nanometer carbon tube is produced by CVD method with a diameter of 10 to 50 nanometer and length of 1 to 500 mu-meter and purity of 85 to 95 percents. The epoxy resin is phenolic aldehyde epoxy resin with molecular weight of 900 to 1100. The produced complex material is block material. The invention uniformly scatters the carbon nanometer tube into the epoxy resin basal so to enhance the flexibility of the epoxy resin basal material. In this way a complex material with remarkable dynamics property and inter-obtains static electricity proof, electricity conductive, electromagnetic shielding and microwave absorbing functions which the material producing technics is simple, inexpensive and easily acquirable.

Description

1. Technical field [0001] The invention belongs to the technical field of resin-based composite materials. In particular, it relates to a carbon nanotube / epoxy resin composite material and a preparation method thereof. 2. Background technology [0002] Composite materials have attracted much attention in recent decades due to the excellent properties of both matrix materials and reinforcement materials. Especially in recent years, with the development of nanomaterial research, there have been many reports on the use of nanomaterials to strengthen resin matrix composites. Since carbon nanotubes, known as the "black gold" in nanomaterials, were discovered by Japanese scholar Iijima (S.Iijima, Helical microtubes of graphitic carbon. Nature, 354:56) in 1991, their unique structure, singular performance and potential The application value has aroused great interest of scientists, and it has been a hot spot of scientific research in the world for more than 10 years. Since carbo...

AI Technical Summary

Problems solved by technology

But because the cured epoxy resin (Wang Dezhong. Production and Application of Epoxy Resin [M]. Second Edition, Beijing: Chemical Industry Press, 2001) has high cross-linking density and large internal stress, it is brittle and fatigue-resistant Poor resistance, heat resistance, impact toughness and other shortcomings, it is difficult to meet the requirements of engineering technology, so its application is limited, so various modifications of epoxy resin have become an important research topic in this field

In recent years, although there have been many reports on the use of nano-SiO 2 , CaCO 3 、Al 2 o 3 Etc. reinforced epoxy resin, but so far, there is no report about using carbon nanotubes to modify epoxy resin at home and abroad to improve its mechanical properties and achieve better strengthening and toughening effects.