Acrylic Resin Composition with Silicon Oxide Colloidal Crystal
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Solution Overview
Problem
Conventional methods for manufacturing colloidal crystals with silicon oxide particles fail to exhibit arbitrary play of color over a wide wavelength range and are inefficient in terms of mass productivity and cost, often resulting in poor visibility due to uncontrolled single crystal sizes.
Innovation Solution
An acrylic resin composition containing a polycrystal of silicon oxide colloidal particles with a controlled mean distance between 140 to 330 nm, formed by curing an acrylic monomer or oligomer at room temperature, which allows for intentional control of single crystal size through silicon oxide content and impurity adjustments, enhancing visibility and play of color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional closest packing method with ultrasound wave is used, then packing speed is improved, but liquid vaporization occurs and mass productivity is reduced
Solution Approach 1:
The patent replaces the mechanical ultrasound wave packing method with a chemical polymerization method. Colloidal particles are dispersed in a monomer solution, and polymerization occurs to fix the particles in place, eliminating the need for ultrasound waves and avoiding liquid vaporization while achieving efficient packing.
Solution Approach 2:
The patent changes the fundamental parameter of the packing process from mechanical energy (ultrasound) to chemical energy (polymerization). By controlling polymerization conditions such as monomer concentration, initiator amount, and reaction temperature, the packing process achieves both speed and productivity without vaporization.
2Reliability
If colloidal particles are dispersed in solvent with polymerizable substance and polymerized, then fixed colloidal crystal is formed, but arbitrary play of color cannot be exhibited
Solution Approach 1:
The patent controls the mean distance between colloidal particles by adjusting the content of silicon oxide and other additives in the monomer solution. This parameter control enables the fixed colloidal crystal to exhibit arbitrary play of color over a wide wavelength range while maintaining reliable crystal formation.
Solution Approach 2:
The patent creates local variations in particle spacing by controlling the distribution of silicon oxide particles and other additives within the monomer solution. This results in different local mean distances between particles, which produce the desired play of color effects while maintaining overall crystal structure integrity.
3Ease of manufacture
If polymerization method is used to fix colloidal crystal, then manufacturing process is simplified, but single crystal size is uncontrolled and visibility deteriorates
Solution Approach 1:
The patent controls single crystal size by adjusting polymerization parameters including monomer concentration, initiator amount, reaction temperature, and incubation time. These parameter controls enable precise control of crystal size while maintaining the simplicity of the polymerization process.
Solution Approach 2:
The patent performs preliminary mixing of colloidal particles with monomer and initiator before polymerization. This preliminary action ensures uniform distribution of particles and controlled nucleation, resulting in uniform crystal size while keeping the overall process simple.
4Productivity
If small single crystals are formed in polycrystal, then polymerization process is efficient, but play of color is insufficient
Solution Approach 1:
The patent optimizes polymerization parameters to achieve appropriate single crystal size. By controlling initiator amount, monomer concentration, and reaction conditions, the process produces crystals large enough to exhibit play of color while maintaining efficient polymerization.
Solution Approach 2:
The patent allows some degree of particle aggregation during polymerization to create larger single crystals. This partial deviation from complete uniform distribution results in sufficient crystal size for color play while maintaining overall process efficiency.
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 acrylic resin composition to exhibit arbitrary play of color over a wide wavelength range, improving visibility and productivity by controlling the size of single crystals, making it suitable for architectural, fashion, and optical materials.
Implementation Method 1
formed by curing an acrylic monomer liquid at room temperature and/or an acrylic oligomer liquid at room temperature
Implementation Method 2
a polycrystal of colloidal particles of silicon oxide is contained in an acrylic resin
Implementation Method 3
fixed by repulsion of the polymer chain
Data Source
AI summary
The present invention provides an acrylic resin composition containing a polycrystal of colloidal particles of silicon oxide in an acrylic resin that is formed by curing an acrylic monomer liquid at room temperature and/or an acrylic oligomer liquid at room temperature, wherein a mean distance between the colloidal particles in the polycrystal is 140 to 330 nm. The size of the single crystal that constitutes the polycrystal can be controlled by adjusting the content of silicon oxide and/or the additive amount of impurities. An architectural material, a fashion accessory, and an optical material are provided that are formed by using the acrylic resin composition.