Composite Particles with Dual Surface Regions for Resin Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing composite particles face limitations in maintaining desired optical effects and dispersibility in resin matrices, especially under high shear forces, which can lead to surface damage and color shifts.
Innovation Solution
Composite particles with a carrier particle composed of quartz and layered silicate, featuring both hydrophilic and hydrophobic surface regions, allowing for targeted coating and enhanced shear resistance, are produced using a method involving mixing, temperature exposure, and controlled shear energy to ensure uniform distribution and optical effects in mineral cast parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a uniform surface coating is applied to composite particles, then the desired material characteristics (such as optical properties) are achieved, but the dispersibility in synthetic resin matrix deteriorates
Solution Approach 1:
The surface of the composite particle is divided into distinct hydrophilic regions and hydrophobic regions. The hydrophilic regions (quartz) provide good dispersibility in the resin matrix, while the hydrophobic regions (layered silicate) maintain the desired optical characteristics. This local differentiation of surface properties resolves the contradiction between uniform coating performance and dispersibility.
2Productivity
If high shear forces are applied during processing, then the composite particles can be distributed and processed, but the surface coating is damaged and optical effects are lost
Solution Approach 1:
The surface coating is segmented into two distinct material phases: quartz and layered silicate. The quartz component provides mechanical robustness and resistance to shear forces, while the layered silicate maintains the optical properties. This segmentation allows the particle to withstand processing shear forces without losing its optical effect.
3Ease of manufacture
If a single material is used for the surface coating, then the manufacturing process is simplified, but the ability to provide both dispersibility and optical characteristics is limited
Solution Approach 1:
The surface coating is constructed as a composite material consisting of quartz and layered silicate. This composite structure combines the dispersibility benefits of hydrophilic quartz with the optical properties of hydrophobic layered silicate, achieving dual functionality that a single material cannot provide.
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 composite particles maintain desired optical characteristics and dispersibility in resin matrices, resisting high shear forces and ensuring uniform distribution, preventing color shifts and maintaining brilliance in mineral cast parts and composite workpieces.
Implementation Method 1
the surface of the composite particle has at least one hydrophilic region and at least one hydrophobic region
Data Source
AI summary
The invention relates to composite particles, comprising a carrier particle and an at least partial surface coating, the carrier particle comprising a quartz and a layered silicate and the surface of the composite particle having at least one hydrophilic region and at least one hydrophobic region. The invention also relates to a method for producing composite particles, comprising the steps:a) providing carrier particles, comprising a quartz and a layered silicate,b) introducing the carrier particles into a mixing device,c) charging the carrier particles with a coating composition,d) coating the carrier particles with the coating composition by mixing the carrier particles with the coating composition, with the introduction of shear energy,e) subjecting the coated carrier particles to temperature.In addition, the invention relates to a mineral cast part or to a composite workpiece which comprises the above-described composite particles.