Surface-Modified Boron Nitride for Thermal Conductivity
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Solution Overview
Problem
Inorganic nitrides, such as boron nitride, face challenges in achieving improved dispersibility within organic substances when used as thermally conductive materials, which hinders their thermal conductivity performance.
Innovation Solution
Surface modification of inorganic nitrides using compounds represented by General Formula (I), which include hydroxyl, carboxylic acid, or sulfonic acid groups, and aromatic hydrocarbon rings, enhances their dispersibility and thermal conductivity by forming a well-dispersed state within organic matrices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If inorganic nitride is mixed with organic substance as thermally conductive material, then thermal conductivity is improved, but dispersibility is insufficient
Solution Approach 1:
The surface properties of inorganic nitride particles are modified by introducing specific functional groups (carboxylic acid, hydroxyl, or amino groups) through surface treatment with compounds containing these groups. This changes the surface parameters of the inorganic nitride to improve compatibility and dispersibility with organic substances while maintaining thermal conductivity.
Solution Approach 2:
The patent creates a composite system where inorganic nitride particles with modified surfaces are combined with organic substances. The surface-modified inorganic nitride forms a composite material that exhibits both improved dispersibility in the organic matrix and maintained thermal conductivity, resolving the contradiction between these two properties.
2Stability of the object's composition
If surface of inorganic nitride is modified to improve dispersibility, then affinity with organic substance is improved, but thermal conductivity may be compromised
Solution Approach 1:
The modification is applied locally only to the surface of the inorganic nitride particles, leaving the bulk properties intact. The surface is treated with specific compounds to introduce functional groups that improve dispersibility, while the core inorganic nitride structure that provides thermal conductivity remains unchanged. This local modification resolves the contradiction by affecting only the interface properties.
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 surface-modified inorganic nitrides exhibit enhanced dispersibility and thermal conductivity, leading to improved thermally conductive properties, especially when combined with polymerizable monomers that exhibit liquid crystallinity, forming a conductive path and aligning liquid crystal components for increased heat dissipation.
Implementation Method 1
a compound which is represented by General Formula (I) and is adsorbed onto a surface of the inorganic nitride
Data Source
AI summary
An object of the present invention is to provide a surface-modified inorganic nitride having excellent dispersibility. Furthermore, another object of the present invention is to provide a composition, a thermally conductive material, and a device with a thermally conductive layer which contain the surface-modified inorganic nitride.The surface-modified inorganic nitride of the present invention includes an inorganic nitride, and a compound which is represented by General Formula (I) and is adsorbed onto a surface of the inorganic nitride.