Thermosetting Bamboo-Wood Composite Pipe Multi-Layer Design
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Solution Overview
Problem
Current pipes used for agricultural irrigation and water drainage, such as cement, organic plastics, glass reinforced plastics, and thin-wall iron pipes, face issues like low strength, insufficient rigidity, high material costs, and poor corrosion resistance, with bamboo fiber composite pipes being expensive and heavy, making them difficult to transport and install.
Innovation Solution
A thermosetting bamboo-wood composite pipe is developed with a multi-layer structure comprising an inner liner layer, a reinforcement layer of wound bamboo strips, a structural layer of planed veneer or two-ply board, and an outer protection layer, utilizing fast-growing trees and amino resin to achieve high strength, low weight, and corrosion resistance while reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bamboo fiber composite pipes are used, then strength and corrosion resistance are improved, but weight increases and transportation becomes difficult
Solution Approach 1:
The pipe is divided into multiple functional layers: inner liner layer (smooth surface), reinforcement layer (bamboo strips for strength), structural layer (wooden veneer for rigidity), and outer protection layer (corrosion resistance). Each layer contributes specific properties while maintaining overall light weight through optimized material distribution.
Solution Approach 2:
The invention uses composite materials combining bamboo strips, wooden veneer, and resin binders to create a multi-layer structure that achieves high strength-to-weight ratio. The composite structure allows optimization of each layer's thickness and material properties to balance strength requirements with weight reduction.
2Strength
If glass reinforced plastics pipes are used, then strength is improved, but production complexity and harmful waste increase
Solution Approach 1:
The invention changes the material parameters from glass fibers to natural bamboo strips and wooden veneer, and uses environmentally friendly resin binders instead of traditional glass reinforced plastic materials. This parameter change simplifies production by using readily available natural materials and reduces harmful waste generation.
Solution Approach 2:
The invention uses inexpensive natural materials (bamboo strips and wooden veneer) that are readily available and easy to process, replacing expensive glass reinforced plastics. The materials are processed into thin layers that are bonded together, creating a cost-effective alternative with reduced production complexity.
3Duration of action of stationary object
If cement pipes are used, then durability is improved, but weight increases and strength decreases
Solution Approach 1:
The invention creates a composite structure combining bamboo strips (for tensile strength), wooden veneer (for rigidity and dimensional stability), and resin binders (for bonding and durability). This composite approach achieves high strength while maintaining light weight, unlike dense cement pipes that are durable but weak and heavy.
Solution Approach 2:
Different layers are assigned specific functions: the inner liner layer provides smooth flow surface, the reinforcement layer (bamboo strips) provides tensile strength, the structural layer (wooden veneer) provides rigidity, and the outer protection layer provides corrosion resistance. This local quality optimization achieves overall durability without the need for dense cement material.
4Strength
If bamboo-sand composite pipes are used, then strength is improved, but weight increases and installation becomes difficult
Solution Approach 1:
The pipe structure is segmented into thin layers (inner liner, reinforcement, structural, and outer protection layers) that can be manufactured separately and assembled efficiently. This segmentation reduces the overall weight compared to dense bamboo-sand composites while maintaining strength through the optimized multi-layer configuration.
Solution Approach 2:
The invention changes the material composition from heavy bamboo-sand mixture to a multi-layer structure with bamboo strips and thin wooden veneers bonded with resin. This parameter change in material distribution and bonding method achieves high strength with reduced weight, improving ease of transportation and installation.
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 composite pipe offers improved strength, rigidity, and corrosion resistance, reducing material costs and transportation challenges, while being environmentally friendly and energy-efficient, making it suitable for various applications including agricultural irrigation and water drainage.
Implementation Method 1
a certain amount of an amino resin is simultaneously added
Data Source
AI summary
A composite pipe including an inner liner layer, a reinforcement layer, a structural layer, and an outer protection layer. The inner liner layer, the reinforcement layer, the structural layer, and the outer protection layer are arranged in that order from the inside out along the radial direction of the pipe. The reinforcement layer includes wound bamboo strips; the structural layer includes a wound planed board; and the reinforcement layer and the structural layer are sandwiched between the inner liner layer and the outer protection layer.