Far-Infrared Ray Radiation Sheet with Carbon Fiber and Graphite
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Solution Overview
Problem
Conventional far-infrared ray radiation sheets have poor heat generation efficiency, leading to long temperature rise times, rapid temperature drops, and increased electricity usage due to frequent power cycling, along with temperature unevenness and localized 'stuffy heat' generation.
Innovation Solution
A far-infrared ray radiation sheet incorporating high heat conductivity carbon fiber, first graphite for reduced contact resistance, and second graphite forming a conductive network, with electrodes and organic compound layers to enhance heat generation and diffusion, reducing temperature unevenness and electricity usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional far-infrared ray radiation sheets use basic heating materials, then the structure is simple, but heat generation efficiency is poor and temperature rise time is long
Solution Approach 1:
The patent changes the material parameters by incorporating carbon fiber and graphite particles with specific physical properties (high heat conductivity, specific surface area) into the heating sheet composition, transforming it from a conventional heating material to a high-efficiency far-infrared radiating material that rapidly generates heat and maintains temperature
Solution Approach 2:
The patent creates a composite material system combining carbon fiber, graphite particles, and binder resin, where each component contributes specific properties: carbon fiber provides structural framework and electrical conductivity, graphite particles enhance heat conductivity and far-infrared radiation, and binder resin holds the structure together, achieving synergistic heating performance
2Reliability
If conventional heating sheets lack sufficient heat conductivity, then material selection is easier, but temperature-keeping performance is poor and temperature drops rapidly
Solution Approach 1:
The patent modifies the thermal conductivity parameter of the heating sheet by incorporating graphite particles and carbon fiber, which have inherently high thermal conductivity, enabling the sheet to rapidly conduct and distribute heat throughout its structure, thereby maintaining stable temperature and preventing rapid temperature drops
Solution Approach 2:
The patent creates local high-conductivity zones within the heating sheet structure by distributing graphite particles and carbon fiber throughout the binder resin matrix, ensuring that heat is efficiently conducted locally and distributed uniformly across the entire sheet area, improving overall temperature stability
3Manufacturing precision
If conventional far-infrared ray radiation sheets have uniform material distribution, then manufacturing is simpler, but temperature unevenness occurs and localized heat rises happen
Solution Approach 1:
The patent employs local quality by strategically distributing carbon fiber and graphite particles throughout the binder resin matrix, creating regions with optimized thermal and electrical properties that work together to eliminate temperature unevenness and prevent localized heat accumulation, achieving uniform temperature distribution across the heating sheet
Solution Approach 2:
The patent optimizes the compositional parameters of the heating sheet by controlling the ratios and distribution of carbon fiber, graphite particles, and binder resin, transforming the material structure to achieve uniform heat distribution and eliminate temperature variations while maintaining manufacturing feasibility
4Loss of energy
If conventional heating sheets have poor heat diffusion, then heat concentration is higher, but stuffy heat is generated and local temperature rises occur
Solution Approach 1:
The patent applies local quality by creating a network of high thermal conductivity pathways through the strategic placement of carbon fiber and graphite particles within the binder resin, enabling efficient heat diffusion throughout the heating sheet structure, preventing heat concentration and eliminating stuffy heat generation while maintaining energy efficiency
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 solution achieves high heat generation efficiency, improved temperature-keeping performance, reduced electricity consumption, and minimized temperature unevenness, effectively suppressing localized heat rises and 'stuffy heat' generation.
Implementation Method 1
carbon fiber exhibiting high heat conductivity
Implementation Method 2
first graphite exhibiting high heat conductivity, second graphite that forms a conductive network
Implementation Method 3
radiates far-infrared rays by applying current to the electrodes
Implementation Method 4
far-infrared ray radiation sheet that radiates far-infrared rays
Data Source
AI summary
Heat generation efficiency is increased; temperature-keeping performance is increased; heat unevenness is reduced; and a heat diffusion property is increased. Provided is a far-infrared ray radiation sheet 1 according to the present invention that is formed in a planar shape, that radiates far-infrared rays, the far-infrared ray radiation sheet comprising a heat generation type mixed paper 10 comprising a basic material, carbon fiber exhibiting high heat conductivity, first graphite exhibiting high heat conductivity, second graphite that forms a conductive network, and mixed paper formed by mixing the basic material, the carbon fiber, the first graphite and the second graphite; electrodes 21 provided to the heat generation type mixed paper 10; and prepregs 11 laminated on the heat generation type mixed paper 10, wherein the far-infrared rays are radiated by applying current to the electrodes 21.