Conductive Cellulose Resin Composition
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Solution Overview
Problem
Conductive resin compositions that utilize carbon nanotubes and conductive polymers often suffer from low conductivity, high production costs, and environmental concerns due to greenhouse gas emissions during incineration, and require additional components like iron or cobalt, which complicate moldability and residue issues.
Innovation Solution
A conductive cellulose-based resin composition is developed using aliphatic cellulose ester as the matrix resin with carbon materials like single-walled or multi-walled carbon nanotubes, single-layer or multi-layer graphene, and fullerene, achieving high conductivity without additional components and minimizing greenhouse gas emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of carbon material is increased to enhance conductivity, then conductivity is improved, but moldability is remarkably reduced
Solution Approach 1:
The patent changes the chemical composition parameters of the matrix resin by using cellulose acetate with specific acetyl substitution degrees (2.2-2.6) and controlled molecular weight distribution (polydispersity 2.0-10.0). This parameter optimization allows the resin to maintain excellent moldability even with 1-80 parts by weight of carbon material, while achieving high conductivity through effective carbon material dispersion.
2Reliability
If conductive polymers or third components (iron, cobalt) are added to achieve high conductivity, then conductivity is improved, but production cost increases and environmental harm is generated
Solution Approach 1:
The patent extracts and eliminates harmful components (conductive polymers like poly-3-hexylthiophene, polypyrrole, polyaniline, and third components like iron or cobalt) from the composition. By using only cellulose acetate as the matrix resin and carbon material as the conductive filler, the invention achieves high conductivity without generating SOx, NOx, or metal oxide emissions during incineration.
Solution Approach 2:
The patent replaces expensive conductive polymers and third components with a cost-effective combination of cellulose acetate and carbon material. Cellulose acetate is a biodegradable, environmentally friendly material that can be easily disposed of without generating harmful emissions, while still achieving the desired conductivity function.
3Reliability
If conductive polymers or third components are used to achieve high conductivity, then conductivity is improved, but production cost increases
Solution Approach 1:
The patent replaces expensive conductive polymers and third components with a cost-effective combination of cellulose acetate and carbon material. Cellulose acetate is a biodegradable, environmentally friendly material that can be easily disposed of without generating harmful emissions, while still achieving the desired conductivity function.
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 cellulose-based resin composition exhibits high conductivity, maintains excellent moldability, and reduces environmental impact by eliminating SOx and NOx emissions during incineration, while being cost-effective and easily laminated with other materials.
Implementation Method 1
a resin composition having high conductivity can be obtained by using an aliphatic cellulose ester as a matrix resin and dispersing a carbon material such as a carbon nanotube thereinto
Data Source
AI summary
Problem to be Solved It is intended to provide a conductive resin composition that exhibits high conductivity even without being supplemented with a special resin or a third component, and a molded article obtained from the resin composition. Solution The conductive cellulose-based resin composition of the present invention comprises (A) an aliphatic cellulose ester and (B) at least one carbon material selected from the group consisting of a single-walled carbon nanotube, a multi-walled carbon nanotube, single-layer graphene, multi-layer graphene, fullerene, and carbon black. The volume resistivity of this conductive cellulose-based resin composition is, for example, 10-3 to 20 Ω·cm, preferably 10-3 to 1 Ω·cm. The content of the carbon material (B) is, for example, 0.5 to 80% by weight of the whole conductive cellulose-based resin composition.