Magnetic Core-Shell Particles for Composite Pipe Bonding
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Solution Overview
Problem
The production of composite pipes for transporting corrosive fluids and gases is energy-intensive due to the need to heat the inner bonding tape layer to high temperatures, which can lead to increased costs and potential warping of the pipe shape.
Innovation Solution
A composition comprising a thermoplastic polymer, particles with a magnetic core and silicon dioxide shell, and structural fibers, where the particles are subjected to a magnetic field to raise the temperature of the tape to the melting point of the thermoplastic polymer, reducing the need for high-temperature heating and minimizing pipe distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire pipe is heated to soften and/or melt the inner bonding tape layer, then the tape bonds to adjacent core and shell layers, but energy consumption increases and production costs increase
Solution Approach 1:
The patent applies local quality by incorporating magnetic particles specifically within the bonding tape layer rather than heating the entire pipe. This allows localized heating only where bonding is needed, reducing overall energy consumption while maintaining effective bonding between the tape and adjacent core and shell layers
Solution Approach 2:
The patent replaces the conventional thermal heating system with a magnetic field-based heating system. By using magnetic particles embedded in the bonding tape, the system utilizes magnetic field energy to generate heat locally within the tape layer, substituting the need for conventional external heating mechanisms that would require heating the entire pipe structure
2Reliability
If the pipe is heated from both inside and outside for very large diameter pipes, then the bonding tape softens and bonds, but energy consumption and production costs further increase
Solution Approach 1:
The patent replaces the complex dual-side heating system with a simpler magnetic field application system. The magnetic particles within the bonding tape generate heat internally when exposed to a magnetic field, eliminating the need for complex heating apparatus that would require heating from both inside and outside of large diameter pipes
Solution Approach 2:
The bonding tape contains magnetic particles that enable it to heat itself when exposed to a magnetic field. This self-heating capability eliminates the need for external heating systems and reduces production complexity, as the tape automatically reaches the required temperature for bonding without requiring complex heating infrastructure
3Reliability
If temperatures much higher than needed are applied to raise the temperature of the inner bonding tape layer, then the tape bonds, but the core and/or shell layers are subjected to excessive temperatures increasing production costs
Solution Approach 1:
The patent applies local quality by concentrating the heating effect specifically within the bonding tape layer through embedded magnetic particles. This allows precise temperature control at the bonding interface without subjecting the core and shell layers to excessive temperatures, as the magnetic heating is localized to where the particles are embedded
Solution Approach 2:
The patent replaces conventional external heating systems with magnetic field-based internal heating. This substitution enables precise temperature control within the bonding tape layer, as the magnetic particles generate heat only where needed and can be controlled by adjusting the magnetic field parameters, preventing overheating of adjacent layers
4Reliability
If high temperatures are applied to bond the bonding tape layer, then bonding is achieved, but the pipe shape may warp leading to waste product
Solution Approach 1:
The patent applies local quality by limiting the heating effect to the bonding tape layer through embedded magnetic particles. This localized heating approach prevents excessive temperature exposure to the rest of the pipe structure, thereby maintaining pipe shape accuracy and preventing warping while still achieving effective bonding at the tape interface
Solution Approach 2:
The patent replaces conventional external heating systems with magnetic field-based internal heating. This substitution provides better temperature control and localization, reducing the risk of pipe shape warping. The magnetic particles generate heat only within the bonding tape, minimizing thermal exposure to the pipe's structural layers and maintaining manufacturing precision
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
This method allows for efficient bonding of the tape layers at lower temperatures, reducing energy consumption and production costs while maintaining pipe integrity, and enabling the production of composite pipes suitable for high-pressure fluid conveyance.
Implementation Method 1
the particles are subjected to a magnetic field to raise the temperature of the tape to the melting point of the thermoplastic polymer
Data Source
AI summary
A composition comprising: (a) a thermoplastic polymer; (b) a plurality of particles, each said particle comprising (i) a core comprising one or more magnetic materials and (ii) a shell comprising silicon dioxide; and (c) structural fibers, wherein the composition comprises particles (b) in an amount from 1 to 30 wt % based on the weight of the thermoplastic polymer (a) is provided. Further provided is a tape comprising the composition, a pipe comprising the tape and a method of making such pipe.