Titanium Dioxide Talc Composite Pigment
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Solution Overview
Problem
The high demand and limited availability of titanium dioxide, a widely used white pigment, lead to increased costs and environmental impact, while attempts to reduce its proportion with extenders often compromise the quality and optical properties of formulations due to changes in particle size and surface area, requiring complex recipe adjustments.
Innovation Solution
A white pigment composite is produced by comminuting titanium dioxide and pigment substitute particles to a maximum 10% reduction in size before physisorptive connection, using mechanical fastening methods like pressing and rolling, ensuring a permanent connection without chemical bonding, allowing the composite to maintain optical qualities and withstand shear forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If extenders such as carbonates, quartz and silicates are added to reduce titanium dioxide proportion, then cost is reduced, but quality and optical properties of the formulation deteriorate
Solution Approach 1:
The invention creates a composite material where titanium dioxide particles are permanently attached to extender particles, forming a unified structure that functions as a single pigment system. This composite approach allows the extender to support the titanium dioxide in a way that maintains optical properties while reducing overall titanium dioxide content, thereby resolving the contradiction between cost reduction and quality maintenance
Solution Approach 2:
The invention applies different properties to different parts of the pigment system: titanium dioxide particles provide the optical properties (whiteness, UV resistance, opacity) while extender particles provide structural support and cost reduction. By locally assigning functions to different particle types within the composite, the system achieves both cost efficiency and quality preservation
2Quantity of substance
If extenders are added to reduce titanium dioxide proportion, then cost is reduced, but recipe adjustments become complex
Solution Approach 1:
The invention merges the extender particles with titanium dioxide particles into a single composite pigment system through permanent attachment. This merging eliminates the need for separate recipe adjustments for extenders, as the composite functions as a unified unit that can be directly incorporated into formulations without complex modifications, thereby reducing recipe complexity while maintaining titanium dioxide reduction
3Reliability
If titanium dioxide particles are connected to pigment substitute particles through physisorption with mechanical fastening, then optical properties are maintained, but production process complexity increases
Solution Approach 1:
The invention performs preliminary comminution of both titanium dioxide and extender particles to reduce their size to a maximum of 10 micrometers before the physisorption and mechanical fastening process. This preliminary size reduction facilitates the subsequent attachment process by ensuring compatible particle sizes and surfaces, thereby enabling the complex physisorption mechanism to proceed more efficiently and justifying the increased production complexity through improved optical property maintenance
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 allows for a significant reduction in titanium dioxide usage without altering the product's optical properties, maintaining consistency across various applications and formulations, thus realizing a cost advantage while avoiding the need for extensive recipe adjustments.
Implementation Method 1
the titanium dioxide particles are physisorptively and permanently connected to the pigment substitute particles by mechanically fastening the titanium dioxide particles to the pigment substitute particles
Implementation Method 2
for pressing, pressing or rolling the particles of titanium dioxide into the particles of the pigment substitute a mill with a stress speed the particles are operated at a maximum of 10 m/s
Data Source
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AI summary
The invention relates to a method for producing a white pigment composite based on titanium dioxide particles, wherein talc is added to the titanium dioxide as a pigment substitute particle, and the titanium dioxide particles are physisorptively and permanently bonded to the pigment substitute particles by mechanical attachment of the titanium dioxide particles to the pigment substitute particles.