Curable Composition for Abrasive Articles
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Solution Overview
Problem
Existing abrasive articles face challenges in retaining abrasive particles effectively, especially at high temperatures and on nonpolar substrates, due to limitations in binder adhesion and flexibility.
Innovation Solution
A curable composition comprising cyclic olefins capable of ring opening metathesis polymerization, ring opening metathesis polymerization catalysts, abrasive particles with surface hydroxyl groups, and a difunctional coupling agent, which forms a tough and cohesive binder that securely retains abrasive particles through crosslinking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polar thermosetting resins such as epoxy or phenolic binders are used to securely retain abrasive particles, then adhesion strength is improved, but adhesion to nonpolar substrates deteriorates and flexibility is reduced
Solution Approach 1:
The invention changes the chemical parameters of the binder system by using cyclic olefin monomers with different polarity characteristics and molecular structures. This allows optimization of adhesion properties for nonpolar substrates while maintaining particle retention strength, resolving the contradiction between strong adhesion and versatility.
Solution Approach 2:
The invention creates a composite binder system combining cyclic olefin monomers with specific functional groups that provide both strong adhesion to abrasive particles and compatibility with nonpolar substrates. This composite approach enables simultaneous achievement of strong retention and broad adaptability.
2Strength
If rigid binders such as epoxy or phenolic resins are used to retain abrasive particles, then particle retention is improved, but vibration tolerance and flexibility deteriorate
Solution Approach 1:
The invention modifies the mechanical parameters of the binder by selecting cyclic olefin monomers that produce polymers with appropriate rigidity-flexibility balance. This enables the binder to maintain particle retention while tolerating vibrations and flexing during abrasive operations.
3Strength
If conventional binders are used to secure abrasive particles, then initial adhesion is improved, but performance at high working temperatures deteriorates
Solution Approach 1:
The invention changes the thermal parameters of the binder system by using cyclic olefin monomers that form thermally stable polymer networks. This maintains adhesion strength at elevated working temperatures while preserving initial bonding 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 solution provides abrasive articles with enhanced adhesion, vibration tolerance, and flexibility, ensuring effective retention of abrasive particles even at high temperatures and on nonpolar substrates.
Implementation Method 1
at least one cyclic olefin capable of undergoing ring opening metathesis polymerization
Implementation Method 2
each Z independently represents a group that is chemically reactive with at least one of the surface hydroxyl groups of one of the abrasive particles thereby forming at least one covalent bond
Data Source
AI summary
A curable composition comprises at least one cyclic olefin capable of undergoing ring opening metathesis polymerization; at least one ring opening metathesis polymerization catalyst or precursor catalyst thereof; abrasive particles having surface hydroxyl groups; and a difunctional coupling agent represented by the structure Z-X-Z (I). Each Z independently represents a group that is chemically reactive with at least one of the surface hydroxyl groups of one of the abrasive particles thereby forming at least one covalent bond. X represents a divalent organic linking group have a number average molecular weight of 500 to 10000 grams per mole.