Single-Cavity Multi-Runner for Graphene Fiber Orientation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat-conducting sheets fail to meet the increased heat dissipation requirements due to unsatisfactory oriented alignment and heat-conducting performance of graphene fibers, which is exacerbated by the use of single-cavity extrusion molding equipment.
Innovation Solution
A single-cavity multi-runner extrusion molding equipment with inclined molding cavities, flow channels, and a pressing device is used to achieve oriented arrangement of graphene fibers, enhancing their alignment and heat conductivity through a series of extrusion and contraction processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-cavity extrusion molding equipment is used, then device complexity is reduced, but oriented alignment of graphene fibers deteriorates
Solution Approach 1:
The single extrusion cavity is segmented into multiple independent runners (first runner, second runner, third runner, fourth runner) that divide the flow channel into separate streams. This segmentation allows graphene fibers in each runner to align independently along the extrusion direction, improving overall oriented alignment while maintaining a relatively simple single-cavity structure.
Solution Approach 2:
The invention introduces a multi-dimensional flow path structure within the single cavity, with runners arranged in different spatial orientations and positions. This dimensional arrangement creates multiple flow streams that enhance fiber alignment through extended flow paths and directional control, transforming the simple single-cavity design into a sophisticated multi-path system.
2Device complexity
If single-cavity extrusion molding equipment is used, then device complexity is reduced, but heat-conducting performance deteriorates
Solution Approach 1:
The single cavity is divided into multiple runners that create separate flow channels for the heat-conducting mixture. This segmentation ensures more uniform distribution of graphene fibers throughout the extruded product, creating consistent thermal pathways and improving overall heat-conducting performance while avoiding the need for multiple complex cavities.
Solution Approach 2:
Different regions of the single cavity are optimized with specific runner configurations, gate positions, and flow channel dimensions to ensure uniform material distribution and fiber alignment throughout the extruded product. This local optimization of flow paths enhances thermal conductivity throughout the entire product structure.
3Manufacturing precision
If flow channels are divided using baffle plates, then oriented arrangement of graphene fibers is improved, but device complexity increases
Solution Approach 1:
Baffle plates are strategically positioned within the single cavity to segment the flow into multiple runners. These plates create distinct flow paths that guide the heat-conducting mixture and graphene fibers in specific directions, enhancing oriented arrangement through controlled flow separation while using simple planar structures rather than complex three-dimensional features.
Solution Approach 2:
The baffle plates are designed to pre-establish flow patterns and fiber alignment directions before the material reaches the extrusion points. By creating preliminary flow channels and directional guidance structures within the cavity, the system prepares the material for optimal fiber orientation during the extrusion process, reducing the need for post-processing alignment.
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 equipment significantly improves the oriented arrangement of graphene fibers, leading to enhanced heat conductivity in heat-conducting sheets, as demonstrated by increased orientation ratios under varying extrusion pressures and flow channel configurations.
Implementation Method 1
a pressing device, wherein the pressing device is connected to the first inlet and includes a casing, wherein an oil pressing cavity, and a material pressing cavity are arranged in the casing
Implementation Method 2
a first molding cavity, wherein the first molding cavity is arranged in an inclined manner, a second inlet is arranged at the high position end of the first molding cavity, a second outlet is arranged at the low position end of the first molding cavity
Implementation Method 3
the inner wall of the second molding cavity is contracted gradually from the third inlet to the third outlet
Implementation Method 4
the inner wall of the first extrusion cavity is provided with a first area of rough surface and a first area of smooth surface
Data Source
AI summary
A single-cavity multi-runner applied to oriented arrangement extrusion molding equipment of graphene fibers includes a first extrusion cavity, the first extrusion cavity includes a first inlet and a first outlet arranged opposite to each other; a first molding cavity, the first molding cavity is arranged in an inclined manner, a second inlet is arranged at the high position end, a second outlet is arranged at the low position end of the first molding cavity, and the second inlet is connected to the first outlet; flow channels, the flow channels are formed by dividing the first molding cavity using baffle plates arranged horizontally and along the flowing direction of a heat-conducting mixture; a second molding cavity, the second molding cavity includes a third inlet and a third outlet arranged opposite to each other, the third inlet is connected to the outflow end of the flow channels.