Post-treatment agent and method for using same to treat eucalyptus/PES (polyether sulfone) composite powder formed part formed by selective laser sintering

Abstract

The invention relates to post-treatment agent and a method for using the same to treat a eucalyptus / PES (polyether sulfone) composite powder formed part formed by selective laser sintering, relates to a post-treatment method of the eucalyptus / PES (polyether sulfone) composite powder formed part formed by selective laser sintering, and overcome the defects that a formed part made of wood / rubber composite powder by selective laser sintering is high porosity and low in strength, and the formed part subjected to ultraviolet irradiation is prone to oxydative degradation resulting in deterioration of mechanical properties. The post-treatment agent is composed of a component A and a component B, the component A is composed of epoxy resin and diluent, and the component B is composed of firming agent and diluent. The post-treatment method includes: firstly, mixing the component A and the component B; and secondly, soaking the formed part in the mixture prior to baking. By the post-treatment method, the size precision of the formed part is guaranteed, mechanical properties of the formed part can be improved greatly, impact strength of the formed part is about doubled, tensile strength of the formed part is increased by 20 times, and bending strength of the formed part is increased by about 15 times.

Description

technical field [0001] The invention relates to a post-processing method of selective laser sintering eucalyptus / PES composite powder molded parts. Background technique [0002] With the improvement of selective laser sintering technology, domestic and foreign countries gradually shift their attention to the field of materials to reduce the cost of raw materials, which makes this advanced manufacturing technology more widely used and has become a hot spot at home and abroad. Therefore, selective laser sintering is fast The design and research of new molding materials have attracted much attention. [0003] However, it is relatively difficult to develop new materials for this technology. Sintering molding is often accompanied by shrinkage, warping, deformation, etc. Since it is processed under pressure-free conditions, the bonding between powder particles is not strong and there are many voids. All these congenital deficiencies make the performance of the parts not high. Du...

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the defects that the parts obtained by selective laser sintering of wood powder / rubber powder mixed powder have large void ratio, low strength, and easy oxidative degradation after being irradiated by ultraviolet rays, resulting in deterioration of mechanical properties, and propose a post-treatment agent Method for processing selective laser sintered eucalyptus / PES composite powder molded parts thereof