Preparation Technology And Mechanical Properties Of Composite Material Honeycomb Cellualr Structure

Honeycomb structure exist lot of straight hole, great permeability, major opening degree, has a broad application prospect in many fields. However the traditional preparation methods of cellular structure connection strength is not enough, the material mechanical properties, thermoelectric performance is not too much, high temperature performance is poor, this is because most of the traditional preparation method is as corrugated sheet metal processing, welding or bonding into a honeycomb, weak zone of stress concentration, joint lead to poor performance. 3d printing is a kind of rapid prototyping technology, the technology will not produce the stress concentration, such as weld and is not restricted by the shape of the material, with a complex structure can be easily prepared materials, is very suitable to serve as the process of preparation of honeycomb structure.Polylactic acid materials on the 3d printing technology has a broad application prospect, but the brittleness, poor crystallization performanceseverely limits its application. This topic for carbon nanotubes reinforced polylactic acid based composite material, the sample cell geometry software design, raw material melt blending silk, and the integration of 3 d printing technology, the successful preparation of the sample cell structure and dumbbell tensile samples;Using SEM, XRD, Raman spectrum analyzer and infrared spectrum analyzer and so on technical analysis of carbon nanotubes reinforced polylactic acid composite material wire rod and microstructure of carbon nanotubes are discussed enhanced polylactic acid composite material performance and its organizational structure. Preparation of the test and analysis results show that the lower the temperature, carbon nanotube enhanced the tensile property of polylactic acid based composite material and the better the performance of compression; The experiment temperature is lower, carbon nanotube enhanced the tensile property of polylactic acid based composite material with compression performance, the better.Through SEM of PLA/CNTs composites phase and fracture observation, combined with the interface analysis and fracture morphology research fracture mechanism of composite materials, composite material fracture mainly appeared in the region of the carbon nanotubes together, also led to a decline in its mechanical properties.