Conductive Resin Composition Using Compatibilizer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing conductive resin compositions face challenges in achieving high conductivity, heat resistance, and antistatic properties while maintaining compatibility between components, with previous methods often resulting in reduced mechanical properties or contamination issues due to the use of conductive fillers or dyes.
Innovation Solution
A conductive resin composition comprising a polyolefin resin, a compatibilizer such as modified polyolefin grafted with ethylene acrylate or dicarboxylic acid, and polyaniline nanofibers with specific dimensions, which are melt-compounded to enhance compatibility and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive dyes such as carbon black are mixed with polymer resin to achieve conductivity, then electrostatic dispersibility or conductivity can be improved, but the amount of conductive dyes added must be greatly increased and compatibility with the polymer resin deteriorates
Solution Approach 1:
The patent uses silane-modified polyethylene as a compatibilizer that acts as an intermediary between the conductive carbon structures and the polyolefin resin. This compatibilizer has both polar groups that interact with carbon structures and non-polar groups that are compatible with polyolefin, thereby improving electrostatic dispersibility without sacrificing polymer resin compatibility
Solution Approach 2:
The patent creates a composite material system consisting of polyolefin resin, silane-modified polyethylene compatibilizer, and conductive carbon structures. This multi-component composite achieves synergistic effects where the compatibilizer enhances the interface between dissimilar materials, allowing low amounts of conductive filler to achieve desired conductivity while maintaining material compatibility
2Reliability
If the amount of conductive fillers is increased to achieve required conductivity and electromagnetic radiation absorption properties, then conductivity improves, but mechanical properties of polymer resin materials are deteriorated
Solution Approach 1:
The patent changes the chemical parameters of the polymer system by introducing silane-modified polyethylene with specific functional groups. This parameter change in the polymer chemistry allows effective conductive filler dispersion at low concentrations, achieving required conductivity without exceeding filler content thresholds that would compromise mechanical properties
Solution Approach 2:
The silane-modified polyethylene serves as a mediator that enables effective stress transfer between the conductive filler particles and the polymer matrix. This intermediary prevents filler aggregation and maintains polymer chain continuity, thereby preserving mechanical properties even with conductive filler addition
3Reliability
If conductive carbon structures such as carbon nanotubes, carbon fibers, and graphene are added to polymer resins to achieve high conductivity, then conductivity improves, but compatibility with polymer resins is not high and heat resistance cannot be satisfied together with conductivity
Solution Approach 1:
The patent applies local quality modification by functionalizing the surface of conductive carbon structures with silane groups. This creates localized polar regions on the carbon surface that interact with the silane-modified polyethylene, improving interfacial compatibility without altering the bulk conductive properties of the carbon structures
Solution Approach 2:
The silane-modified polyethylene acts as a molecular bridge between the non-polar polyolefin resin and the polar conductive carbon structures. The compatibilizer's dual-character chemistry (both polar and non-polar groups) enables it to simultaneously interact with both material types, resolving the compatibility issue
Data Source
AI summary
Disclosed herein is a conductive resin composition. The conductive resin composition includes a polyolefin resin, a specific compatibilizer, and polyaniline nanofibers. The conductive resin composition may provide a resin molded article having high conductivity and heat resistance together with excellent antistatic properties while securing high compatibility between respective components.