Hemp-Winding Composite Pipe for Corrosion-Resistant Irrigation
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Solution Overview
Problem
Current pipes used for agricultural irrigation and building ventilation, such as cement, PVC, polyethylene, and glass reinforced plastics, face issues like low strength, high energy consumption, environmental pollution, and poor corrosion resistance, making them inefficient and harmful.
Innovation Solution
A hemp-winding composite pipe is developed with a lining layer, a reinforcement layer of continuously connected hemp basts, and an external protective layer, utilizing hemp basts treated through a winding process to create a lightweight, strong, and environmentally friendly pipe with improved production efficiency and reduced pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional materials like cement, glass fiber, or metal are used for pipe reinforcement, then strength and rigidity are improved, but production complexity and environmental harm increase
Solution Approach 1:
The patent uses hemp bast fibers combined with resin to create a composite reinforcement layer that provides the necessary strength and rigidity while avoiding the complexity of glass fiber processing and metal manufacturing. The hemp bast composite achieves structural reinforcement with simpler, more environmentally friendly materials.
2Ease of manufacture
If synthetic petrochemical materials like PVC or polyethylene are used, then ease of manufacture is improved, but environmental pollution and resource consumption worsen
Solution Approach 1:
The patent transitions from synthetic petrochemical materials to natural hemp bast fibers, fundamentally changing the material parameter from synthetic to natural origin. This substitution maintains manufacturability through resin bonding while eliminating the environmental pollution and resource depletion associated with petroleum-based plastics.
3Strength
If thin-wall iron pipes are used, then strength is improved, but corrosion resistance and environmental friendliness worsen
Solution Approach 1:
The patent creates a composite structure where hemp bast fibers provide tensile strength while the resin matrix provides corrosion resistance. This composite approach achieves the necessary strength without using iron or steel, thereby eliminating corrosion issues and improving environmental compatibility.
4Ease of manufacture
If discontinuous fiber reinforcement is used, then ease of manufacture is improved, but production efficiency and structural integrity worsen
Solution Approach 1:
The patent employs continuously connected hemp basts in the reinforcement layer, ensuring continuous load transfer and structural integrity. This continuous fiber arrangement maintains high production efficiency by enabling streamlined manufacturing processes while achieving superior structural performance compared to discontinuous fibers.
Data Source
AI summary
A hemp-winding composite pipe including a lining layer, a reinforcement layer winding on the lining layer, and an external protective layer, in that order from the inside to the outside in the radial direction. The reinforcement layer is a hemp bast layer, including continuously connected hemp basts.