Sulphur-Linkable Rubber Compound Abrasion Chip Resistance
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Solution Overview
Problem
Existing rubber compounds face a conflict between abrasion resistance and 'chip & chunk' resistance, as increasing carbon black concentration enhances abrasion resistance but decreases elongation at break, thereby reducing cut resistance and leading to material loss in vehicle tires.
Innovation Solution
A sulfur-crosslinkable rubber mixture containing specific diene rubbers and carbon black A with an iodine adsorption number of 100 to 140 g/kg and a DBP number of 50 to 75 ml/100 g, which maintains high elongation at break while providing high abrasion and 'chip & chunk' resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the concentration of conventional carbon blacks is increased to improve abrasion resistance, then abrasion resistance is improved, but elongation at break decreases, reducing cut resistance and chip & chunk resistance
Solution Approach 1:
The patent applies parameter changes by selecting carbon black with specific physical parameters (iodine adsorption number of 100-140 g/kg and DBP number of 50-75 ml/100g) that differ from conventional carbon blacks. This parameter optimization allows achieving high abrasion resistance while maintaining sufficient elongation at break, thereby resolving the contradiction between abrasion resistance and chip & chunk resistance
Solution Approach 2:
The patent uses composite materials by combining specific diene rubbers (such as SBR, BR, NR, or IR) with carbon black A having the specified parameters. This composite formulation achieves a synergistic effect where the rubber matrix provides elasticity and the optimized carbon black provides reinforcement, resulting in both high abrasion resistance and maintained elongation at break
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 rubber mixture achieves high abrasion resistance and improved crack propagation resistance with maintained or improved tire properties, enhancing durability and service life of vehicle tires.
Implementation Method 1
an iodine adsorption number according to ASTM D 1510 of 100 to 140 g/kg
Implementation Method 2
a DBP number according to ASTM D2414 of 50 to 75 ml/100 g
Implementation Method 3
Sulphur-crosslinkable rubber compound, vulcanizate of the rubber compound
Data Source
AI summary
The invention relates to a sulfur-curable rubber compound, its vulcanizate, and a vehicle tire. The rubber compound according to the invention contains at least the following components: - at least one diene rubber and - 3 to 200 phr of at least one carbon black A, which has an iodine adsorption value according to ASTM D 1510 of 85 to 145 g/kg and a DBP value according to ASTM D 2414 of 50 to 75 ml/100 g. The vehicle tire according to the invention comprises at least one vulcanizate of the rubber compound according to the invention in at least one component.