Fiber Composite Vibration Damping via Carbon Nanotube Resin Layers
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Solution Overview
Problem
High molecular fiber composite materials used in robotic arms face challenges with brittleness and insufficient vibration damping, leading to prolonged vibration decay times that affect productivity.
Innovation Solution
A fiber composite material is developed with a hollow tube structure composed of fiber prepreg layers and composite resin layers containing multi-layered carbon nanotubes with reactive functional groups, where the layer ratio of composite resin to fiber prepreg layers is optimized between 1:4 to 1:7, enhancing vibration damping while maintaining material hardness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high molecular fiber composite material is used to achieve high strength and light weight, then mechanical strength is improved, but vibration damping characteristic deteriorates leading to prolonged vibration decay time
Solution Approach 1:
The patent applies composite materials by combining fiber prepreg layers with composite resin layers containing multi-layered carbon nanotubes. This creates a hybrid structure that leverages the high strength of fibers and the vibration damping properties of carbon nanotubes, resolving the contradiction between mechanical strength and vibration decay time
Solution Approach 2:
The patent implements local quality by introducing composite resin layers with carbon nanotubes at specific positions between fiber prepreg layers. The layer ratio is optimized to 1:4 to 1:7, placing damping-enhancing material only where needed to reduce vibration without compromising overall structural strength
2Productivity
If composite resin layer with carbon nanotubes is increased to improve vibration damping, then vibration damping characteristic is improved, but material hardness deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the layer ratio of composite resin layers to fiber prepreg layers within 1:4 to 1:7. This specific ratio range ensures sufficient vibration damping from carbon nanotubes while maintaining adequate material hardness through the fiber reinforcement
Solution Approach 2:
The patent uses composite materials by combining fiber prepreg layers with composite resin layers containing multi-layered carbon nanotubes. This creates a balanced hybrid structure that achieves both vibration damping improvement and material hardness maintenance
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 optimized layer ratio significantly increases vibration damping efficiency, reducing vibration decay times and maintaining material strength, thus improving productivity and performance.
Implementation Method 1
a fiber composite material with vibration damping characteristic
Implementation Method 2
the extent of vibration damping is still insufficient
Implementation Method 3
each of the multi-layered carbon nanotubes has reactive functional groups containing an amine group, a carboxyl group, a hydroxyl group or an acyl chloride group on its surface
Data Source
AI summary
A fiber composite and manufacturing method thereof are provided. The fiber composite material includes: a plurality of fiber prepreg layers each including a first resin and fibers impregnated with the first resin; and at least one composite resin layer disposed between two of the fiber prepreg layers and including multi-layered carbon nanotubes and a second resin, wherein the surface of the multi-layered carbon nanotube has reactive functional groups containing an amine group, a carboxyl group, a hydroxyl group or an acyl chloride group, wherein the at least one composite resin layer and the fiber prepreg layers together form a hollow tube and the layer ratio of the at least one composite resin film layer to the fiber prepreg layers is 1:4 to 1:7.