Washable high-temperature-resistant conductive photocuring material for 3D printing and printing process thereof

Abstract

The invention belongs to the field of 3D printing, and particularly relates to a washable high-temperature-resistant conductive photocuring material for 3D printing and a printing process thereof. The washable high-temperature-resistant conductive photocuring material comprises the following components in parts by mass: 10 to 30 parts of waterborne epoxy acrylate, 10 to 30 parts of waterborne polyester acrylate, 10 to 30 parts of acrylate monomer, 10 to 30 parts of high-strength acrylate oligomer, 1 to 10 parts of a photoinitiator, 1 to 10 parts of a metal filler and 1 to 10 parts of gas-phase nanometer silicon dioxide, wherein the completely cured strength of the high-strength acrylate oligomer is not lower than 90 MPa. The invention also provides a printing process of the material. The characteristics of high conductivity, high migration resistance and stable conductivity of silver-plated copper powder are matched with light curing treatment, so a continuous conductive network is formed.

Description

technical field [0001] The invention belongs to the field of 3D printing, and specifically relates to a water-washable high-temperature-resistant and conductive 3D printing light-curing material and a printing process thereof. Background technique [0002] With the development of high technology such as the electronics industry, computer industry and energy industry, the society's demand for new materials continues to increase, especially the research and development of conductive materials has attracted more and more attention. Conductive materials can affect the development of electronics, aerospace, communication and many other fields. [0003] The most important property of conductive materials is good electrical conductivity. Depending on the purpose of use, in addition to electrical conductivity, sometimes sufficient mechanical strength, wear resistance, high temperature resistance, corrosion resistance, oxidation resistance, elasticity, and high thermal conductivity a...

AI Technical Summary

Problems solved by technology

[0004] With the development of 3D printing, more and more injection molding production is replaced by 3D printing, and printing functional electronic products is also gradually developing. The demand for customized conductive workpieces is mainly completed by 3D printing technology. At present, most The 3D printing process of the conductive material is FDM process, but the dimensional stability of the conductive wire is poor, and the accuracy is too low

[0005] There are very few 3D printing light-curing conductive materials on the market. The demand for high-precision 3D printing conductive workpieces is to print the required workpieces through DLP or SLA equipment, and then spray conductive coatings to meet the needs. Spraying is generally solvent-based coatings, VOC Too high, there is pollution, not environmentally friendly, and the process is too much and complicated

Moreover, the current 3D printing DLP or SLA materials are all oily materials, which wrap the conductive particles, causing the conductive network to break, and eventually causing the conductivity to be unstable.

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