Light Curable Resin for 3D Printing with High Elongation
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Solution Overview
Problem
Traditional (meth)acrylic based resins used in 3D printing processes, such as Stereolithography and Digital Light Processing, are rigid and have poor elongation properties after curing, limiting the applications of the products due to their fragility.
Innovation Solution
A light curable composition comprising (meth)acrylate monomer, acrylamide compound, and (meth)acrylate oligomer, along with a photoinitiator, which exhibits excellent elongation properties after curing, suitable for 3D printing, and can be used to form 3D articles with improved flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional (meth)acrylic based resin is used for 3D printing, then the resin can be cured to form rigid structures, but the cured products have poor elongation property and are fragile
Solution Approach 1:
The patent combines multiple resin components including (meth)acrylic based resin, flexible resin (polyurethane acrylate or polyester acrylate), and reactive diluent to create a composite light-curable composition. This composite approach allows the cured product to achieve both rigidity from the (meth)acrylic resin and flexibility/elongation from the flexible resin, resolving the contradiction between strength and reliability
Solution Approach 2:
The patent modifies the chemical composition parameters of the resin system by incorporating specific flexible resins with particular molecular structures (polyurethane acrylate or polyester acrylate) and adjusting their proportions relative to the (meth)acrylic based resin. This parameter change transforms the material properties to achieve both rigidity and improved elongation property simultaneously
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 composition results in 3D articles with elongation at break greater than or equal to 100%, significantly enhancing the flexibility and durability of the printed products, making them more suitable for various applications.
Implementation Method 1
Three-dimensional (3D) printing processes, such as Stereolithography (SLA) and Digital Light Processing (DLP), are based on the layer-wise polymerization of Ultraviolet (UV) sensitive resins
Data Source
AI summary
This invention relates to a light curable composition, comprising at least one acrylate monomer, at least one acrylamide compound, at least one acrylate oligomer, and at least one photoinitiator. The light curable composition of the present invention exhibits excellent elongation property after curing and is suitable to be applied for 3D printing.