Surface Modified Abrasive Particles for Bond Strength
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Solution Overview
Problem
The industry faces challenges in achieving improved bond strength between abrasive particles and organic bond materials in abrasive articles, which affects the performance of these articles.
Innovation Solution
Surface modified abrasive particles with a core abrasive particle and a coating of dopamine, tyrosine, dihydroxyphenylalanine, norepinephrine, epinephrine, normetanephrine, 3,4-dihydroxyphenylacetic acid, tannic acid, or pyrogallic acid are used, enhancing the interaction with organic bond components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional abrasive particles are used without surface modification, then the manufacturing process is simple, but the bond strength between abrasive particles and organic bond materials is insufficient
Solution Approach 1:
The patent applies preliminary action by pre-modifying the surface of abrasive particles with coating materials (such as silanes, oxides, or organic compounds) before incorporating them into the organic bond composite. This advance surface treatment creates reactive groups or improved surface energy on the abrasive particles, enabling stronger chemical or physical bonding with the organic bond materials, thereby resolving the contradiction between bond strength and process complexity.
Solution Approach 2:
The patent employs composite materials by combining abrasive particles with surface coatings (forming a core-shell structure) and integrating them into an organic bond matrix. The composite abrasive particle consists of a core abrasive material and a surface coating layer that acts as an interface enhancer, creating a multi-layer composite structure that improves bond strength while maintaining the abrasive functionality.
2Reliability
If surface modified abrasive particles are used, then the bond strength and flexure strength are improved, but the manufacturing complexity increases
Solution Approach 1:
The surface modification is performed as a preliminary step before composite fabrication, allowing the abrasive particles to be pre-coated with bonding-enhancing materials. This advance preparation ensures that when the particles are later incorporated into the organic bond matrix, they immediately provide improved flexure strength and reliability without requiring complex in-situ modification processes.
Solution Approach 2:
The patent applies parameter changes by modifying surface energy, surface chemistry, or surface morphology parameters of the abrasive particles through coating treatments. These parameter changes enhance the interfacial adhesion between abrasive particles and organic bond materials, leading to improved flexure strength and reliability of the final composite product.
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 modification significantly improves the flexure strength of abrasive articles by increasing the bond strength between abrasive particles and organic bond materials, leading to enhanced performance.
Implementation Method 1
a coating functionally connected to a surface of the core abrasive particle
Data Source
AI summary
A surface modified abrasive particle may include a core abrasive particle and a coating functionally connected to a surface of the core abrasive particle. The core abrasive particle may have a median particle size of at least about 0.06 microns. The coating may include a compound selected from the group consisting of dopamine, tyrosine, dihydroxyphenylalanine, norepinephrine, epinephrine, normetanephrine, 3,4-dihydroxyphenylacetic acid, tannic acid, pyrogallic acid or combinations thereof.