Mono(meth)acrylate 1,3-Dioxolane Resin for Flexible 3D Printing
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Solution Overview
Problem
Crosslinkable compositions used in 3D printing face challenges with viscosity, hardness, and mechanical properties, particularly for flexible and elastomeric objects, due to the detrimental effects of mono(meth)acrylates on cohesion and adhesion forces between printed layers and the tank bottom, leading to deformation and layer destruction.
Innovation Solution
A composition comprising a mono(meth)acrylate with a 1,3-dioxolane ring, combined with other mono(meth)acrylates and (meth)acrylated oligomers, in specific proportions, to achieve balanced properties of viscosity, hardness, and elasticity, suitable for various 3D printing techniques, including tank and inkjet printing, by adjusting the soft/hard and hydrophilic/hydrophobic nature of the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If mono(meth)acrylates are added to reduce viscosity, then the viscosity of the composition is reduced, but the mechanical properties and cohesion between layers deteriorate
Solution Approach 1:
The patent applies parameter changes by carefully controlling the proportion of mono(meth)acrylate (component A) to be between 5-50% by weight, and the total of components A and C to be less than 50%, thereby optimizing the balance between viscosity reduction and mechanical property maintenance
Solution Approach 2:
The patent uses a composite composition comprising multiple components: mono(meth)acrylate (A), other mono(meth)acrylate (B), di(meth)acrylate (C), tri(meth)acrylate (D), tetra(meth)acrylate (E), and oligomer (F), where each component contributes different properties to achieve overall optimization of both viscosity and mechanical strength
2Force
If mono(meth)acrylates are added to reduce viscosity, then the viscosity of the composition is reduced, but the adhesion forces between printed layers and tank bottom deteriorate
Solution Approach 1:
The patent applies parameter changes by carefully controlling the proportion of mono(meth)acrylate (component A) to be between 5-50% by weight, and the total of components A and C to be less than 50%, thereby optimizing the balance between viscosity reduction and mechanical property maintenance
Solution Approach 2:
The patent uses a composite composition comprising multiple components: mono(meth)acrylate (A), other mono(meth)acrylate (B), di(meth)acrylate (C), tri(meth)acrylate (D), tetra(meth)acrylate (E), and oligomer (F), where each component contributes different properties to achieve overall optimization of both viscosity and mechanical strength
3Object-affected harmful factors
If the affinity of polymerized resin with tank bottom is reduced, then the suction effect is minimized, but the cohesion of layers may be affected
Solution Approach 1:
The patent applies parameter changes by adjusting the chemical composition parameters, specifically controlling the ratio of hydrophilic to hydrophobic components and the functionality distribution, to reduce the affinity between polymerized resin and tank bottom while maintaining layer cohesion
Solution Approach 2:
The patent applies local quality by having different components serve different local functions: component A and B provide flexibility and control adhesion, component C provides crosslinking density for strength, and component F provides structural integrity, thereby optimizing both anti-suction properties and layer cohesion
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 enhances the mechanical properties of 3D objects, improving cohesion and reducing deformation, enabling the production of flexible and elastomeric objects with enhanced tear resistance and print quality.
Implementation Method 1
Crosslinkable compositions, in particular radiation-crosslinkable compositions, are commonly used to obtain inks, coatings and also 3D objects
Data Source
AI summary
The present invention relates to a crosslinkable composition comprising a mono(meth)acrylate comprising a 1,3-dioxolane ring, another mono(meth)acrylate and also a (meth)acrylated oligomer. The invention also relates to a process for producing a crosslinked product, in particular a 3D object, from this composition, and also to the use of this composition for obtaining an ink, a coating, a sealant, an adhesive, a molded material, an inking plate or a 3D object. The invention further relates to the use of a mono(meth)acrylate having a 1,3-dioxolane ring in a composition for 3D printing.