Modified Fillers for Elastomer Hysteresis and Abrasion
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Solution Overview
Problem
Existing elastomeric compositions face a challenge in simultaneously improving hysteresis and abrasion resistance, as fillers often enhance one property at the detriment of the other, necessitating the development of fillers that can improve both without significant compromise.
Innovation Solution
Modified fillers, such as carbon black and metal oxides, are treated with triazoles or pyrazoles, which are adsorbed or attached to enhance hysteresis and abrasion resistance in elastomeric compositions, utilizing chemical groups like triazoles, pyrazoles, and imidazoles to improve the properties of elastomeric materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filler surface chemistry is modified to improve elastomeric properties, then hysteresis and/or abrasion resistance can be enhanced, but the complexity of the compounding process increases
Solution Approach 1:
The patent applies preliminary action by pre-modifying filler surfaces with organic groups (triazoles, pyrazoles, imidazoles) before incorporating them into the elastomer matrix. This pre-functionalization of fillers ensures optimal interaction with the elastomer from the outset, simplifying the overall compounding process while achieving the desired performance improvements in hysteresis and abrasion resistance
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 modified fillers effectively improve both hysteresis and abrasion resistance in elastomeric compositions, achieving a balance between these properties without compromising one for the other, leading to enhanced performance in applications like tire manufacturing.
Implementation Method 1
The modified filler can be a filler having adsorbed thereon: (a) at least one triazole, such as 1,2,4 triazole; (b) at least one pyrazole; or any combinations thereof
Data Source
AI summary
Elastomeric compositions are described which have at least one functionalized elastomer and at least one modified filler which has adsorbed and/or attached chemical groups, such as a triazole and/or pyrazole thereon, or other modified fillers which are also described. Methods are further described to improve hysteresis and/or abrasion resistance in elastomeric compositions containing a functionalized elastomer using the modified fillers of the present invention.