Curable Composition for Reinforcing Shaped Objects
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Solution Overview
Problem
Three-dimensional modeling techniques using powder binding processes often result in shaped objects with insufficient strength and color degradation when impregnated with existing 2-cyanoacrylate-based adhesives, particularly affecting objects colored in red or similar hues.
Innovation Solution
A curable composition comprising 2-cyanoacrylic acid ester and a surface conditioner with a surface tension of 28 mN/m or less, preferably containing silicone or fluorinated modifiers, is used to reinforce shaped objects while maintaining or enhancing color developability and texture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing 2-cyanoacrylate-based adhesives are used to reinforce shaped objects, then the strength of the shaped object is improved, but the color integrity and texture are degraded
Solution Approach 1:
The patent modifies the chemical composition parameters of the adhesive by incorporating specific additives (silicone oil, fluorinated compounds, or wax) into the 2-cyanoacrylate-based adhesive. These compositional changes allow the adhesive to maintain its bonding strength while simultaneously preventing color and texture degradation of the shaped object during and after the reinforcing process
Solution Approach 2:
The patent creates a composite adhesive material by combining 2-cyanoacrylate monomer with functional additives (silicone oil, fluorinated compounds, or wax). This composite formulation integrates the high bonding strength of cyanoacrylate with the surface-protective properties of the additives, resolving the contradiction between reinforcement effectiveness and surface quality preservation
2Strength
If impregnating compositions are applied to colored shaped objects, then the strength is improved, but the brightness of color is diminished
Solution Approach 1:
The patent introduces surface-active additives (silicone oil, fluorinated compounds, or wax) as intermediary substances that mediate between the adhesive and the colored surface of the shaped object. These intermediaries form a protective layer during impregnation that prevents direct contact between the adhesive and the colorant, thereby maintaining color brightness while still achieving structural reinforcement
Solution Approach 2:
The patent adjusts the surface tension and viscosity parameters of the impregnating composition by adding specific compounds. These parameter modifications enable the adhesive to penetrate the shaped object effectively for reinforcement while controlling the interaction with the colored surface to preserve color brightness
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 effectively reinforces shaped objects, preserves color integrity, and improves texture, especially for objects colored in red, by ensuring the adhesive permeates and cures without degrading the surface finish.
Implementation Method 1
it quickly polymerizes and cures to bond various adherends due to its high anion polymerizability under the presence of an anion moiety such as moisture present on a surface of an adherend or in the air
Implementation Method 2
a curable composition which comprises a 2-cyanoacrylic acid ester and a surface conditioner and has a surface tension of 28 mN/m or less at 25° C.
Data Source
AI summary
This curable composition can easily reinforce shaped objects and the reinforced shaped objects have good color developability and excellent texture. The curable composition includes a 2-cyanoacrylic acid ester and a surface conditioner, in which the c content of the surface conditioner is 0.001-10 parts by mass relative to 100 parts by mass of the 2-cyanoacrylic acid ester, and the surface tension of the composition is 28 mN/m or less at 25° C. Preferred surface conditioners are silicone-based and fluorinated surface conditioners. Reinforced shaped objects and a method for reinforcing shaped objects using the curable composition are also provided.