Aircraft Tire Tread Blend Balancing Landing Wear and Thermal Stability
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Solution Overview
Problem
Aircraft tires face significant wear challenges during landings due to high pressure, load, and speed conditions, which existing rubber compositions based on natural rubber and carbon black struggle to adequately address, necessitating improved wear resistance while maintaining mechanical and thermal stability.
Innovation Solution
The development of an aircraft tire tread composition comprising a specific blend of isoprene elastomer, butadiene and styrenic copolymer functionalized with tin, and a reinforcing filler, which enhances wear resistance during landings without compromising mechanical and thermal properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural rubber and carbon black compositions are used in aircraft tire treads, then mechanical properties and thermal stability are maintained, but wear resistance during landing is insufficient
Solution Approach 1:
The patent uses a composite elastomeric matrix combining isoprene elastomer (15-75 pce) and butadiene-styrene copolymer functionalized with tin (25-85 pce) to achieve superior wear resistance while maintaining mechanical properties. This composite material approach resolves the contradiction by creating a synergistic blend where each component contributes specific properties: isoprene provides thermal stability and the copolymer enhances abrasion resistance.
Solution Approach 2:
The patent modifies the chemical composition parameters of the tread by incorporating tin-functionalized butadiene-styrene copolymer at specific concentrations (25-85 pce) alongside isoprene elastomer. This parameter change in the material composition enables improved wear resistance during landing while preserving the necessary mechanical strength and thermal stability through optimized formulation ratios.
2Reliability
If natural rubber and carbon black compositions are used in aircraft tire treads, then thermal stability is maintained, but wear resistance during landing is insufficient
Solution Approach 1:
The patent employs a composite elastomeric matrix combining isoprene elastomer (15-75 pce) and butadiene-styrene copolymer functionalized with tin (25-85 pce) to achieve superior wear resistance while maintaining mechanical properties. This composite material approach resolves the contradiction by creating a synergistic blend where each component contributes specific properties: isoprene provides thermal stability and the copolymer enhances abrasion resistance.
3Reliability
If existing rubber compositions are used, then manufacturing simplicity is maintained, but wear resistance during landing is insufficient
Solution Approach 1:
The patent modifies the chemical composition parameters of the tread by incorporating tin-functionalized butadiene-styrene copolymer at specific concentrations (25-85 pce) alongside isoprene elastomer. This parameter change in the material composition enables improved wear resistance during landing while preserving the necessary mechanical strength and thermal stability through optimized formulation ratios.
Data Source
AI summary
The present invention relates to tyres for equipping aircraft and having an improved resistance to wear. The tread of said tyres comprises a composition made from at least one reinforcing filler, a cross-linking system and an elastomer matrix comprising 15 to 75 parts per hundred parts of elastomer, phr, of isoprene elastomer, and 25 to 85 phr of a tin-functionalised styrene-butadiene copolymer, the total concentration of isoprene elastomer and of tin-functionalised styrene-butadiene copolymer being in the range from 45 to 100 phr.