Method for preparing nano composite material

Abstract

The invention belongs to a method for preparing a nano composite material. A multi-walled carbon nano-tube has excellent mechanical properties and conductivity and a unique nano effect of a one-dimensional nanostructure, due to having higher surface energy and surface binding energy, the surface atoms of the multi-walled carbon nano-tube are more easily agglomerated when the multi-walled carbon nano-tube is used as a reinforced material of a polyvinyl composite material with low density, thereby the multi-walled carbon nano-tube has a low dispersion degree in a polyethylene matrix with low density, and an application performance of the composite material is influenced. The method for preparing the nano composite material comprises the following steps: the multi-walled carbon nano-tube is mixed in xylene solvent in advance by using ultrasonic waves; then, the multi-walled carbon nano-tube is mixed with polyethylene solution with low density at 110 DEG C; and finally, the multi-walled carbon nano-tube and polyethylene with low density are internally mixed and dispersed at 180 DEG C. The invention provides the method for preparing the nano composite material by the dispersion of the multi-walled carbon nano-tube in the polyethylene with low density.

Description

Technical field: [0001] The invention relates to a preparation method, in particular to a preparation method of a nanocomposite material. Background technique: [0002] Multi-walled carbon nanotubes have excellent mechanical and electrical properties and the unique nano-effects of their unique one-dimensional nanostructures, making them useful in the preparation of composite materials with super-strong mechanical properties and in the research and development of a new generation of polymers with electrical and optoelectronic properties. played an important role in the field of composite materials. However, when polymer-based composites are used as reinforcing materials, the agglomeration phenomenon affects the application performance of composite materials. This is because the surface atoms of multi-walled carbon nanotubes are under an asymmetric force field and have high surface energy and surface Binding energy, it is very easy to combine with other atoms to form agglomer...

AI Technical Summary

Problems solved by technology

However, when polymer-based composites are used as reinforcing materials, the agglomeration phenomenon affects the application performance of composite materials. This is because the surface atoms of multi-walled carbon nanotubes are under an asymmetric force field and have high surface energy and surface Binding energy, it is easy to combine with other atoms to form agglomeration

In order to prepare multi-walled carbon nanotube polymer-based composite materials, most of the domestic and foreign countries use mechanical force at present, and adopt melting, single-screw or twin-screw extrusion. The degree of dispersion in the material matrix is ​​low, and the uniformity of the performance of the composite material is poor