Resin Composition for 3D Printing Adhesion
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Solution Overview
Problem
Current 3D printing technologies face issues with poor adhesion of thermoplastic polymer materials to substrates and between material layers, leading to potential layer separation in molded articles.
Innovation Solution
A resin composition comprising a thermoplastic elastomer, styrene-based resin, processing oil, and filler, with specific weight percentage ratios, is used to form a filament for fused deposition modeling, enhancing adhesion with substrates and inter-layer adhesive strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional thermoplastic polymer materials (ABS, PLA, PC, nylon) are used in 3D printing, then the printing process can be completed, but the adhesion with substrate and inter-layer adhesive strength are poor
Solution Approach 1:
The patent uses a composite resin composition containing thermoplastic elastomer (20-55 wt%), styrene-based resin (25-55 wt%), processing oil (6-18 wt%), and filler (5-20 wt%). This composite formulation combines materials with complementary properties to achieve both good substrate adhesion and strong inter-layer bonding, preventing layer separation while maintaining printability
Solution Approach 2:
The patent modifies the chemical composition parameters of the printing material by incorporating specific ratios of thermoplastic elastomer and styrene-based resin with particular molecular structures. This parameter optimization enhances the material's adhesive properties without compromising its flow and solidification characteristics during the printing process
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 resin composition improves adhesion with substrates and inter-layer adhesive strength, preventing layer separation in 3D printed articles, resulting in more stable and cohesive molded products.
Implementation Method 1
a thermoplastic polymer material such as acrylonitrile-butadiene-styrene copolymer (ABS), polylactic acid (PLA) resin, polycarbonate (PC), or nylon plastic is heated to a critical state by a heating head (print nozzle) for fused deposition modeling
Implementation Method 2
the semi-fluid material is extruded by the nozzle along a movement trajectory of 2D geometric information confirmed by CAD under computer control such that it is solidified into thin layers having a contour shape
Data Source
AI summary
A resin composition and an application thereof are provided, wherein the resin composition includes a thermoplastic elastomer, a styrene-based resin, a processing oil, and a filler. Based on 100 wt % of the resin composition, the content of the thermoplastic elastomer is 20 wt % to 55 wt %, the content of the styrene-based resin is 25 wt % to 55 wt %, the content of the processing oil is 6 wt % to 18 wt %, and the content of the filler is 5 wt % to 20 wt %. A printing material made by the resin composition has good adhesion with a substrate.