Crosslinked Polyphenyl Polymer Coating for Harsh Environments
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Solution Overview
Problem
Equipment components in harsh environments such as oil or gas wells, geothermal boreholes, and refineries face degradation due to high temperatures and corrosive conditions, leading to structural integrity issues and poor dimensional stability.
Innovation Solution
A crosslinked polymer coating is applied to substrates using polyphenyl polymers like polyphenylene sulfide, polyphenylsulfone, and self-reinforced polyphenylene, which provides a durable, thermally and chemically stable barrier with enhanced mechanical properties and resistance to corrosion and peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If plastic or metal components are used in harsh environments, then equipment can function in oil and gas wells, but the components suffer degradation from high temperature and corrosive conditions
Solution Approach 1:
The patent applies composite materials by combining polymer particles with crosslinking agents to create a crosslinked polymer coating. This composite structure integrates the benefits of polymer flexibility with crosslinked network strength, providing both environmental adaptability and structural reliability in harsh downhole conditions.
Solution Approach 2:
The patent changes the chemical parameter of the polymer by introducing crosslinks between polymer chains. This parameter change transforms the polymer from a linear structure to a three-dimensional crosslinked network, significantly improving thermal stability and chemical resistance while maintaining mechanical properties.
2Quantity of substance
If conventional polymer coatings are applied to substrates, then coverage is achieved, but the coatings lack durability and resistance to peeling under thermal and chemical exposure
Solution Approach 1:
The coating is formulated as a composite system containing polymer particles, crosslinking agents, and optional fillers or modifiers. This composite composition enables the coating to achieve complete substrate coverage while developing strong adhesion through crosslinked bonding that resists thermal and chemical degradation.
Solution Approach 2:
The coating undergoes a chemical parameter change during application where the polymer chains form crosslinked bonds. This transformation occurs when the coating is heated or cured, changing the polymer from a soluble state to an insoluble crosslinked network that firmly adheres to the substrate and resists peeling.
3Temperature
If high temperature resistance is improved through material selection, then thermal stability increases, but manufacturing complexity and process difficulty increase
Solution Approach 1:
The patent achieves thermal stability through a controlled parameter change - crosslinking the polymer coating in situ. The coating is applied in a simple manner as a spray or dip coating, then undergoes crosslinking when heated to the substrate's curing temperature or through chemical crosslinking agents, providing high temperature resistance without complicating the application process.
Solution Approach 2:
The coating system is designed to self-crosslink either through thermal activation during substrate curing or through moisture-induced crosslinking of reactive groups. This self-service mechanism eliminates the need for separate crosslinking equipment or complex manufacturing processes, maintaining ease of manufacture while achieving thermal stability.
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 crosslinked polymer coating effectively protects substrates from environmental damage, maintaining mechanical properties at elevated temperatures and providing superior chemical resistance, barrier properties, and scratch resistance, while ensuring strong adhesion and prolonged substrate integrity.
Implementation Method 1
impacting a substrate with a plurality of particles such that the particles adhere to the substrate
Implementation Method 2
crosslinking the particles in the overlayer to coat the substrate with a crosslinked polymer coating
Data Source
AI summary
A method for coating a substrate includes impacting a substrate with a plurality of particles such that the particles adhere to the substrate, bonding the particles to the substrate to form an overlayer, and crosslinking the particles in the overlayer to coat the substrate with a crosslinked polymer coating. The particles comprise a polyphenyl polymer. An article includes a substrate and a crosslinked polymer coating bonded to the substrate. The crosslinked polymer coating is a product of crosslinking polyphenylene sulfide, polyphenylsulfone, self-reinforced polyphenylene, or a combination thereof on a surface of the substrate.