Multilayer Hose Bonding Layer for Abrasion-Resistant Sheaths
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Solution Overview
Problem
Existing multilayered tubes or hoses face challenges in achieving a strong and durable bond between the abrasion resistant sheath and the force bearing sheath, which affects their longevity and mechanical stability, while also being cost-efficient.
Innovation Solution
A multilayered tube or hose design that includes a force bearing sheath, an abrasion resistant sheath, and an adhesion promoting layer between them, composed of a specific mixture of acrylonitrile butadiene rubber, styrene butadiene rubber, ethylene propylene diene monomer, carbon black, calcium magnesium carbonate, zinc oxide, magnesium-aluminium hydroxycarbonate, resin package blend, and a vulcanizing agent, to enhance bonding strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a multilayered design with different materials for force bearing sheath and abrasion resistant sheath is used, then abrasion resistance and flexibility are improved, but bonding strength between sheaths deteriorates
Solution Approach 1:
An adhesion promoting layer is introduced as an intermediary between the force bearing sheath and the abrasion resistant sheath. This layer comprises a specific composition of rubber materials (acrylonitrile butadiene rubber, styrene butadiene rubber, and ethylene propylene diene monomer) combined with fillers and a vulcanizing agent, creating a bonding interface that adheres to both adjacent sheaths and prevents delamination while maintaining the distinct material properties of each sheath.
Solution Approach 2:
The adhesion promoting layer utilizes a composite material system combining multiple rubber types (acrylonitrile butadiene rubber, styrene butadiene rubber, ethylene propylene diene monomer) with fillers (carbon black, calcium magnesium carbonate, zinc oxide, magnesium-aluminium hydroxycarbonate) and a vulcanizing agent. This composite formulation provides both adhesive bonding capability and mechanical compatibility with the adjacent sheaths.
2Object-affected harmful factors
If standard metal tubes are used for high abrasive resistance, then abrasion resistance is improved, but weight and cost increase
Solution Approach 1:
The abrasion resistant sheath is constructed from plastic material (such as thermoplastic polyurethane) combined with an adhesion promoting layer containing multiple rubber components and fillers. This composite plastic-rubber structure achieves high abrasive resistance comparable to metal while maintaining the lightweight advantage of plastic materials.
3Weight of moving object
If plastic material is used for lightweight and cost-effectiveness, then weight and cost are reduced, but abrasive resistance deteriorates
Solution Approach 1:
The adhesion promoting layer combines multiple rubber materials (acrylonitrile butadiene rubber, styrene butadiene rubber, ethylene propylene diene monomer) with reinforcing fillers (carbon black, calcium magnesium carbonate, zinc oxide, magnesium-aluminium hydroxycarbonate) to create a composite structure that significantly enhances the abrasive resistance of the plastic-based abrasion resistant sheath while maintaining lightweight properties.
4Strength
If adhesion promoting layer with specific composition is used, then bonding strength is improved, but device complexity increases
Solution Approach 1:
A single adhesion promoting layer with a specifically formulated composition serves as the intermediary between the force bearing sheath and the abrasion resistant sheath. This unified layer, comprising multiple rubber materials and fillers in defined proportions, provides comprehensive bonding functionality without requiring multiple separate bonding layers or complex assembly steps.
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 proposed design significantly improves the bonding force and longevity of the multilayered tube or hose, reducing the risk of delamination and extending the lifespan of the hose while maintaining cost-effectiveness.
Implementation Method 1
an adhesion promoting layer that is arranged between the force bearing sheath and the abrasion resistant sheath and that increases the bonding force between the force bearing sheath and the abrasion resistant sheath
Implementation Method 2
a vulcanizing agent
Data Source
AI summary
The disclosure relates to tube or hose (1, 10) including a plurality of coaxially arranged sheaths (2, 3, 4, 5, 6, 7, 8, 12, 13) that are bonded together. The multilayered tube or hose (1, 10) includes at least: a force bearing sheath (2), an abrasion resistant sheath (12), and an adhesion promoting layer (13) that is arranged between the force bearing sheath (2) and the abrasion resistant sheath (12) and that increases the bonding force between said force bearing sheath (2) and said abrasion resistant sheath (12). The adhesion promoting layer (13) includes a mixture of 55 to 85 parts of acrylonitrile butadiene rubber, 5 to 25 parts of styrene butadiene rubber, 5 to 25 parts of ethylene propylene diene monomer, 75 to 125 parts of carbon black N990, 30 to 90 parts of calcium magnesium carbonate, 5 to 15 parts of zinc oxide, 5 to 25 parts of magnesium-aluminium hydroxycarbonate, 20 to 95 parts of resin package blend, 2 to 10 parts of N-(1.3-dimethylbutyl)-N′-phenyl-p-phenylendiamine, 5 to 15 parts of triallyl cyanurate, and 0.5 to 5 parts of a vulcanizing agent.