Boron Nitride Reflective Composition for UV Light
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Solution Overview
Problem
Existing UV reflective compositions do not achieve sufficient reflectivity for UV light, particularly in the deep UV range, and often require costly and environmentally harmful materials.
Innovation Solution
A UV light reflective composition comprising a polysiloxane or polysiloxane derivative matrix with boron nitride particles of average sizes between 0.2 and 0.7 μm, which provides high reflectivity without the need for binders or curing, allowing for a cost-effective and environmentally friendly solution with adjustable boron nitride content and optional metal oxide inclusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If aluminum particles are used as reflective material, then UV light reflection is achieved to about 85%, but the reflectivity is insufficient for deep UV range and additional chemicals or complex manufacturing processes are required
Solution Approach 1:
The patent changes the particle size parameter of boron nitride to a specific range (0.2-0.7 μm) to optimize UV reflection efficiency. This parameter optimization enables high reflectivity without requiring additional chemicals or complex manufacturing processes, directly resolving the contradiction between improving reflectivity and reducing manufacturing complexity
Solution Approach 2:
The patent creates a composite material system consisting of boron nitride particles dispersed in a transparent resin matrix. This composite structure achieves superior UV reflection performance (over 90% in deep UV range) while maintaining simple manufacturing processes, eliminating the need for additional chemicals or complex procedures
2Illumination intensity
If larger particle size is used, then easier processing is achieved, but reflectivity decreases
Solution Approach 1:
The patent identifies and optimizes the particle size parameter to a specific range (0.2-0.7 μm) that simultaneously achieves high UV reflectivity and ease of processing. This optimized parameter range resolves the contradiction by finding the sweet spot where both reflectivity and processability are maximized
Solution Approach 2:
The patent uses boron nitride particles as a substitute for traditional aluminum reflective particles. By copying the functional role of aluminum but using boron nitride with optimized particle size, the invention achieves superior reflectivity while maintaining or improving ease of manufacture
3Illumination intensity
If boron nitride content is increased to improve reflectivity, then UV reflection efficiency increases, but weight content and cost increase
Solution Approach 1:
The patent optimizes the particle size parameter of boron nitride (0.2-0.7 μm) to maximize reflection efficiency per unit mass. This parameter optimization allows achieving over 90% UV reflectivity with reduced boron nitride content compared to conventional solutions, resolving the contradiction between reflectivity improvement and quantity reduction
Solution Approach 2:
The patent employs smaller, more efficient boron nitride particles that provide superior reflectivity at lower concentrations. This approach effectively replaces the need for high quantities of reflective material, reducing both weight content and associated costs while maintaining or improving performance
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 achieves over 90% reflectivity in the UV and deep UV range, is easier to produce, and maintains performance when exposed to UV light, making it suitable for UV light emitting arrangements and photo reactors with improved efficiency and reduced environmental impact.
Implementation Method 1
UV light reflective particles comprising boron nitride, said particles being dispersed in the transmissive matrix
Implementation Method 2
dispersed in the transmissive matrix
Data Source
AI summary
The present invention relates to a UV light reflective composition comprising a light transmissive matrix comprising a silicone resin, and UV light reflective particles comprising boron nitride, the particles being dispersed in the transmissive matrix. The light reflective particles of the UV light reflective composition has an average particle size within the range of from 0.2 to 0.7 μm. An advantage of the present invention is that it provides a highly light reflective composition, especially in the UV range.