Antistatic Airless Tire Composition for High-Speed Durability
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Solution Overview
Problem
Non-pneumatic tires face challenges in maintaining high-speed durability while effectively eliminating static electricity from vehicles.
Innovation Solution
An airless tire design featuring an annular tread portion with a conductive ground-contact surface, an annular inner circumferential portion connected to a conductive wheel, and a spoke portion formed from resin or elastomer containing an antistatic agent, which is blended in specific amounts to ensure conductivity and durability, allowing for static electricity discharge to the road surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional non-pneumatic tire materials are used, then the tire structure is simple and easy to manufacture, but the tire cannot effectively eliminate static electricity while maintaining high-speed durability
Solution Approach 1:
The patent changes the chemical composition parameters of the tire material by incorporating antistatic agents (polymer-based or surfactant-based) at specific concentrations (0.5 to 20% by mass per 100% by mass of base component). This parameter modification enables the material to simultaneously achieve static electricity elimination functionality and maintain high-speed durability through optimized compositional ratios
Solution Approach 2:
The patent creates a composite material system by combining base resin or elastomer components with antistatic agents. This composite approach integrates the structural properties of the base material with the electrostatic dissipation properties of the antistatic agent, achieving both durability and static electricity elimination functions in a unified material system
2Reliability
If antistatic agents are added to the resin or elastomer, then the static electricity elimination function is improved, but the material properties may deteriorate
Solution Approach 1:
The patent optimizes the concentration parameter of antistatic agents within a specific range (0.5 to 20% by mass per 100% by mass of base component). This parameter optimization ensures sufficient antistatic functionality while preventing excessive addition that would compromise the physical properties and structural integrity of the base resin or elastomer material
Solution Approach 2:
The patent applies antistatic agents specifically to the resin or elastomer components that require electrostatic dissipation functionality, rather than uniformly throughout the entire tire structure. This localized application ensures antistatic performance where needed while preserving the mechanical properties of other structural components
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 tire maintains high-speed durability and effectively eliminates static electricity from vehicles by using polymer-based or surfactant-based antistatic agents, suppressing bleed-out and enhancing adhesiveness, thus ensuring long-term antistatic functionality and physical property retention.
Implementation Method 1
the inner circumferential portion which is disposed inward of the tread portion in a tire radial direction and comes into contact with a wheel having conductivity
Implementation Method 2
the antistatic agent is a polymer-based antistatic agent or surfactant-based antistatic agent
Implementation Method 3
suppressing bleed-out and enhancing adhesiveness
Data Source
AI summary
It is possible to maintain high-speed durability while having a function of eliminating static electricity of a vehicle. An airless tire 1 includes a tread portion 2, an inner circumferential portion 3 which comes into contact with a wheel 5 having conductivity, and a spoke portion 4 which connects the tread portion 2 and the inner circumferential portion 3. The tread portion 2 includes a first portion 2A having conductivity, and a second portion 2B in contact with the first portion 2A. The second portion 2B, the spoke portion 4, and the inner circumferential portion 3 are formed from a resin or elastomer. The resin or elastomer contains an antistatic agent. The antistatic agent is a polymer-based antistatic agent or surfactant-based antistatic agent. The antistatic agent is blended in an amount of 0.5 to 20% by mass per 100% by mass of a base component of the resin or elastomer.