3D Printed Parts with Antistatic Fusing Agents
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Solution Overview
Problem
Three-dimensional (3D) printing of polymeric parts often results in static charge buildup due to the insulating nature of materials, leading to electrostatic discharge (ESD) events that can damage sensitive components and ignite flammable materials, negatively affecting production and product reliability.
Innovation Solution
A method of 3D printing that involves depositing layers of build material and selectively applying fusing agents containing antistatic agents, with different antistatic agents used in the core, inner shell, and external shell to impart static dissipative or conductive properties to the printed parts, reducing or eliminating ESD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If polymeric parts are 3D printed using additive processes, then manufacturing efficiency and prototyping speed are improved, but static charge buildup occurs due to the insulating nature of the materials
Solution Approach 1:
The patent applies parameter changes by incorporating antistatic agents into the build material composition and adjusting the chemical properties of the material during the 3D printing process. This modifies the electrical conductivity parameter of the polymeric part to reduce static charge buildup while maintaining the additive manufacturing benefits.
Solution Approach 2:
The patent uses composite materials by combining polymeric build material with antistatic agents to create a composite composition. This composite material maintains the structural properties of the polymer while adding electrostatic dissipation capabilities, resolving the contradiction between manufacturing efficiency and static charge generation.
2Reliability
If antistatic agents are incorporated into the build material, then electrostatic discharge is reduced, but the complexity of the printing process increases
Solution Approach 1:
The patent merges the antistatic function with the build material deposition process by incorporating antistatic agents into the material supply system. This integration allows the 3D printer to deposit both structural and functional properties simultaneously, reducing process complexity compared to separate post-processing steps.
Solution Approach 2:
The patent applies preliminary action by pre-mixing antistatic agents with the build material before deposition. This preliminary preparation ensures that the antistatic properties are built into the material from the start, eliminating the need for complex in-process adjustments or post-processing operations.
3Reliability
If multiple antistatic agents are applied to different regions (core, inner shell, external shell), then static dissipative properties are enhanced, but the number of processing steps increases
Solution Approach 1:
The patent applies local quality by selectively applying different antistatic agents to different regions of the 3D printed part (core, inner shell, external shell) based on their specific functional requirements. This localized approach enhances overall static dissipative properties while allowing each region to be optimized independently.
Solution Approach 2:
The patent uses segmentation by dividing the 3D printed part into distinct functional regions (core, inner shell, external shell) and applying appropriate antistatic agents to each segment. This segmentation strategy enables enhanced static protection without requiring a single complex universal solution for the entire part.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively reduces or eliminates ESD in 3D printed parts by imparting static dissipative or conductive properties, enhancing production reliability and safety by preventing damage to sensitive components and reducing the risk of ignition.
Implementation Method 1
The fusing agent may be applied over a selected area of a layer of the build material. Upon application of energy, the selectively deposited agent may absorb the energy.
Implementation Method 2
A 3D part may be printed, formed, or otherwise generated onto a build area platform. The 3D printer may also include a spreader to spread a layer of a build material onto the build area platform, and a printhead to selectively deposit the agent.
Data Source
AI summary
According to examples described herein, methods, compositions, and agents comprising an antistatic agent are described. According to one example, a fusing agent composition for three-dimensional printing can comprise: at least one antistatic agent in an amount of from about 0.01 wt % to about 20 wt % based on a total weight of the fusing agent composition, at least one near infrared absorbing compound, at least one surfactant, at least one organic solvent, and water.