Bamboo-Straw Composite Pipe Structure for Lightweight Rigidity
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Solution Overview
Problem
Current pipes used in agricultural irrigation, water supply, and building ventilation, such as cement, PVC, polyethylene, polypropylene, and FRP pipes, are heavy, weak, environmentally unfriendly, energy-intensive, or prone to corrosion, failing to provide a suitable solution for rigidity, strength, and cost-effectiveness.
Innovation Solution
A composite pipe made from bamboo fiber and straw, featuring a layered structure with a bamboo fiber reinforced layer, a straw reinforced layer, and an outer protective layer, utilizing natural and inorganic fillers to enhance strength and stiffness, while being environmentally friendly and cost-effective, utilizing idle resources to reduce production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If cement pipes are used, then durability is improved, but weight increases and strength decreases
Solution Approach 1:
The patent uses a composite structure combining bamboo fiber reinforced concrete and straw reinforced concrete in layers. This composite material approach achieves durability through the concrete layers while the bamboo and straw reinforcement provides tensile strength and reduces overall weight compared to traditional cement pipes.
2Ease of manufacture
If polyvinyl chloride pipes are used, then ease of manufacture is improved, but rigidity and strength decrease
Solution Approach 1:
The patent combines organic reinforcement (bamboo fiber and straw) with concrete matrix to create a composite pipe that achieves high rigidity and strength. The layered composite structure with steel wire mesh further enhances mechanical properties while maintaining ease of manufacturing through standardized production processes.
3Strength
If FRP pipes are used, then strength is improved, but energy consumption increases
Solution Approach 1:
The patent changes the material parameters by using locally available natural materials (bamboo and straw) instead of energy-intensive FRP materials. The bamboo fiber and straw reinforcement provide sufficient strength for agricultural applications while requiring minimal processing energy, thus reducing overall energy consumption.
4Weight of stationary object
If thin iron pipes are used, then weight is reduced, but corrosion resistance decreases
Solution Approach 1:
The patent uses a composite structure where bamboo fiber reinforced concrete and straw reinforced concrete provide corrosion resistance. The concrete matrix protects the organic reinforcement from moisture and chemical exposure, achieving reliable corrosion resistance while keeping the pipe lightweight compared to traditional cement pipes.
Data Source
AI summary
A composite pipe, including, successively, from the inside out in the radial direction of the composite pipe: an inner liner layer; a reinforced layer; and an outer protective layer. The reinforced layer includes a bamboo fiber reinforced layer and a straw reinforced layer. The bamboo fiber reinforced layer includes a plurality of bamboo strip layers. Each bamboo strip layer includes winding bamboo strips. The straw reinforced layer includes a plurality of straw layers. Each straw layer includes winding stems of straw.