Conductive Thermoplastic Elastomer via Carbon Nanotube Dispersion
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Solution Overview
Problem
Full vulcanized thermoplastic elastomers prepared by traditional methods lack conductivity, limiting their application in conductive requirements despite having improved mechanical and chemical properties.
Innovation Solution
Incorporating a small amount of carbon nanotubes into the blending process of thermoplastic plastics and rubber particles with crosslinking structures, where carbon nanotubes are dispersed in the continuous plastic phase and distributed between rubber particles, allowing for effective conductivity without compromising the material's original properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional full vulcanized thermoplastic elastomer is prepared by dynamic vulcanization of thermoplastic elastomer and rigid thermoplastic plastics, then the strength, elasticity, heat resistance and compressive permanent deformation resistance are improved, but the material lacks conductivity which limits its application in conductive requirements
Solution Approach 1:
The patent combines full vulcanized thermoplastic elastomer with carbon nanotubes to create a composite material that integrates the mechanical strength and elasticity of the elastomer with the electrical conductivity of carbon nanotubes, resolving the contradiction between mechanical reliability and conductive adaptability
2Adaptability or versatility
If a large amount of conductive filler is added to achieve conductivity, then the conductivity is improved, but the mechanical properties of the material are compromised
Solution Approach 1:
The patent changes the parameter of conductive filler concentration to an optimal low level (0.1-5 phr) and combines it with the percolation network effect of carbon nanotubes, achieving conductivity while maintaining mechanical properties by avoiding excessive filler addition
3Adaptability or versatility
If carbon nanotubes are dispersed in the continuous plastic phase and distributed between rubber particles, then effective conductivity is achieved with minimal carbon nanotube usage, but the dispersion and distribution control becomes more challenging
Solution Approach 1:
The patent performs preliminary dispersion of carbon nanotubes in the plastic matrix before final compound formation, ensuring uniform distribution between rubber particles and effective conductivity with minimal filler content, thereby controlling the dispersion quality in advance
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 resulting conductive full vulcanized thermoplastic elastomers exhibit good conductivity with minimal impact on their mechanical properties, using a simple blending process and low amounts of carbon nanotubes, suitable for applications requiring static resistance and electromagnetic interference resistance.
Implementation Method 1
Incorporating a small amount of carbon nanotubes into the blending process of thermoplastic plastics and rubber particles with crosslinking structures, where carbon nanotubes are dispersed in the continuous plastic phase and distributed between rubber particles, allowing for effective conductivity
Data Source
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AI summary
The invention provides a conductive full vulcanized thermoplastic elastomer and its preparation method, and relates to the technical field of full vulcanized thermoplastic elastomer. The full vulcanized thermoplastic elastomer is obtained by melt-blending components including rubber particles having crosslinking structure with mean particle diameter of 0.02 to 1µm, carbon nanotubes as conductive fillers and thermoplastic plastics once, wherein the weight ratio of the rubber particles and the thermoplastic plastics is from 30:70 to 75:25 and the content of conductive fillers is from 0.3 to 10 weight parts based on the total weight of rubber particles and thermoplastic plastics of 100 weight parts. The resulting conductive full vulcanized thermoplastic elastomers have low content of conductive fillers and excellent combination performances. It can be prepared by conventional rubber processing methods and can be used to produce electronic production equipment, means, electronic instrument, instrument housing and decorative materials of clean production workshop having static resistance, electro magnetic interference resistance and clean requirement.