3D Printed Composite Parts with Tunable Wettability
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Solution Overview
Problem
Current methods for preparing materials with controllable superhydrophilic and superhydrophobic properties are limited in achieving continuous changes between these states, which is necessary for practical applications, and 3D printing has not been utilized for such controllable wettability materials.
Innovation Solution
Composites with controllable superhydrophilic and superhydrophobic interface performances are created using hydrophobic and hydrophilic powders combined with thermoplastic polymer jointing phase powders, allowing for continuous changes in wettability through varying mass percentages and particle sizes, and a 3D printing method using selective laser sintering to form these composites into specific parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional methods are used to prepare materials with superhydrophilic and superhydrophobic properties, then single superwetting properties can be achieved, but continuous changes from superhydrophilic to superhydrophobic performances cannot be realized
Solution Approach 1:
The patent changes the composition parameters of the composite material by adjusting the mass percentages of hydrophobic powder, hydrophilic powder, and thermoplastic polymer. By varying these parameters, continuous changes in wettability from superhydrophilic to superhydrophobic can be achieved. For example, increasing hydrophobic powder content while decreasing hydrophilic powder content transitions the surface from superhydrophilic to superhydrophobic.
Solution Approach 2:
The patent uses composite materials combining hydrophobic powder, hydrophilic powder, and thermoplastic polymer in specific ratios. This composite approach allows tuning of wettability properties by adjusting the composition ratios, enabling continuous transition between superhydrophilic and superhydrophobic states while maintaining structural integrity through the thermoplastic binder.
2Reliability
If complex modification processes are used to achieve controllable wettability, then superhydrophobic and superhydrophilic properties can be obtained, but the process cost and difficulty increase
Solution Approach 1:
The patent merges multiple functions into a single composite material formulation. The thermoplastic polymer serves as both binder and processing aid, while the hydrophobic and hydrophilic powders provide dual wettability control. This unified approach simplifies manufacturing compared to sequential modification steps, as all components are mixed and processed together in one step.
Solution Approach 2:
The patent achieves reliable wettability control through precise parameter adjustment of the composite composition rather than complex post-processing modifications. By controlling the mass percentages of each component during material preparation, stable and tunable wettability properties are obtained directly, avoiding multiple modification steps.
3Adaptability or versatility
If 3D printing is used to manufacture parts with specific wettability, then complex geometries can be produced, but the material must first be formulated as printable composite powder
Solution Approach 1:
The patent formulates the composite material with specific particle size distributions and composition ratios optimized for 3D printing. The thermoplastic polymer content and powder characteristics are adjusted to ensure proper flowability and sintering behavior during printing, enabling complex geometries to be manufactured with controlled wettability.
Solution Approach 2:
The patent creates a composite powder formulation specifically designed for additive manufacturing. The combination of hydrophobic powder, hydrophilic powder, and thermoplastic polymer in controlled ratios provides both the desired wettability properties and the rheological characteristics needed for successful 3D printing processability.
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 solution enables the production of parts with continuous tunable wettability suitable for various applications, offering advantages in cost, process control, and industrial scalability, with potential applications in biochemistry, biomedicine, and other high-value fields.
Implementation Method 1
a 3D printing method using selective laser sintering to form these composites into specific parts
Implementation Method 2
the jointing phase powders are thermoplastic polymers
Data Source
AI summary
The present invention provides composites with controllable superhydrophilic and superhydrophobic performances, a 3D printing method and 3D printed parts. The composites with controllable superhydrophilic and superhydrophobic interface performances comprise hydrophobic powder and/or hydrophilic powder and jointing phase powder, wherein the jointing phase powder is thermoplastic polymers. The present invention can print the parts with a continuous wettability change from superhydrophilic to superhydrophobic performances by regulating the mass percentage of the hydrophobic powder, the hydrophilic powder and the jointing phase powder. Furthermore, the present invention can prepare the models with various shapes according to different application scenes, and regulate the interface wettability performances of the models.