Polyurea-Coated RTR Pipe Structure for Impact and UV Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing reinforced thermosetting resin pipes (RTR) are susceptible to impact damage, especially when buried, making it difficult to detect and repair leaks, and lack resistance to UV degradation, necessitating a non-metallic pipe with improved impact and abrasion resistance for both underground and aboveground applications.
Innovation Solution
A multi-layer RTR pipe design featuring a core layer of thermosetting resin and fibers, with an outer polyurea-based layer providing impact and UV resistance, manufactured through a process involving resin impregnation, winding, and partial curing followed by polyurea application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforced thermosetting resin pipes are used for underground and aboveground applications, then they provide structural strength and chemical resistance, but they are susceptible to impact damage and UV degradation
Solution Approach 1:
The patent applies composite materials by combining the thermosetting resin pipe with an external polyurea-based layer. This composite structure integrates the structural strength of the RTR pipe with the impact resistance and UV protection of the polyurea coating, creating a multi-functional piping system that addresses both mechanical strength and environmental resistance requirements.
Solution Approach 2:
The patent implements local quality by applying the polyurea-based protective layer specifically to the external surface of the pipe that is exposed to impact and UV conditions. This targeted approach provides enhanced protection only where needed (the external surface facing environmental hazards) while maintaining the original pipe structure and properties in the core, optimizing both protection and material efficiency.
2Object-affected harmful factors
If the pipe is buried underground, then it is protected from UV damage, but it becomes difficult to detect and repair leaks and impact damage
Solution Approach 1:
The patent utilizes color changes by incorporating visually distinct colors into the polyurea-based external layer. This allows the coating to serve as a visual indicator system where different colors can mark specific sections, potential leak areas, or damage zones, making underground pipes detectable and locatable without excavation, thus solving the detection difficulty while maintaining UV protection.
3Object-affected harmful factors
If a protective outer layer is added to improve impact resistance, then the pipe gains better protection, but the complexity of the manufacturing process increases
Solution Approach 1:
The patent applies preliminary action by preparing the external surface of the RTR pipe with specific surface treatments or primers before applying the polyurea-based layer. This preliminary preparation ensures optimal adhesion and performance of the protective coating, reducing the need for complex multi-step processes or repeated applications, thereby simplifying the overall manufacturing while achieving superior impact resistance.
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 polyurea-based layer enhances impact resistance and UV protection, maintaining structural integrity and enabling effective detection and repair of damage, suitable for both underground and aboveground use without compromising joint integrity.
Implementation Method 1
The polyurea-based layer enhances impact resistance
Implementation Method 2
The polyurea-based layer enhances impact resistance and UV protection
Data Source
AI summary
This disclosure describes a reinforced thermosetting resin piping system that is protected from external impact and UV damage by an outer polyurea-based layer. The embodiments described herein can be favorably used for underground and aboveground applications. In some implementations, an RTR pipe includes a core layer that includes a resin and fibers, an outer layer that includes a polyurea-based layer, and an interface layer between the core layer and the outer layer. The methods described herein also outline the process of producing the pipe structure.