Wear-Resistant Rubber Composition for Mining Equipment
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Solution Overview
Problem
Wear-resistant rubber compositions for mining equipment and shock absorption systems face challenges in maintaining durability and efficiency due to high wear rates and inadequate cross-linking density, leading to increased operational costs and reduced performance.
Innovation Solution
A wear-resistant rubber composition comprising hydroxy-terminated polybutadiene, natural rubber, polymerization accelerants, sulfur, and silica with a cross-linking density of at least 30×10−5 moles/cm3, which includes additional components like antiozonants, vulcanization inhibitors, and carbon black to enhance wear resistance and processing properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rubber compositions are used in mining equipment, then manufacturing costs are reduced, but wear resistance is insufficient leading to frequent replacements
Solution Approach 1:
The patent changes the chemical composition parameters of the rubber by incorporating specific ratios of natural rubber (20-70 wt%), polybutadiene (10-40 wt%), and hydroxy-terminated polybutadiene (1-10 wt%), along with optimized cross-linking agents and fillers, to achieve superior wear resistance while maintaining cost-effectiveness
Solution Approach 2:
The patent creates a composite rubber material combining multiple rubber types (natural rubber, polybutadiene, hydroxy-terminated polybutadiene) with reinforcing fillers (silica, carbon black) and cross-linking agents to produce a material with enhanced wear resistance properties that neither component could achieve alone
2Reliability
If cross-linking density is increased to improve wear resistance, then material durability is enhanced, but processing difficulty increases
Solution Approach 1:
The patent incorporates cross-linking agents and accelerators in the rubber compound formulation before vulcanization, allowing the cross-linking process to occur uniformly during curing. This preliminary preparation ensures adequate cross-linking density is achieved without requiring additional post-processing steps or excessive curing conditions that would complicate manufacturing
3Duration of action of stationary object
If equipment wear resistance is improved, then replacement frequency is reduced, but initial material costs increase
Solution Approach 1:
The patent optimizes the formulation parameters to use cost-effective natural rubber as the primary component (20-70 wt%) while incorporating smaller amounts of higher-performance but more expensive components like polybutadiene and hydroxy-terminated polybutadiene (1-10 wt%), achieving extended equipment lifespan at moderate material cost
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 composition significantly reduces wear rates by up to 30% over 24 weeks, improving the lifespan of mining equipment and shock absorption systems while maintaining effective cross-linking density and processing requirements.
Implementation Method 1
structures such as bridges and buildings require a shock absorber and/or damper to damp shock impulses, thereby dissipating kinetic energy created through movement of the structures themselves or the environment surrounding the structures
Implementation Method 2
at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 30×10−5 moles/cm3
Data Source
AI summary
This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 30×10−5 moles/cm3.