Modified Carbon Black Grafting for Insulated Light-Shielding Laminates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Carbon black particles in copper clad laminates face challenges in stable dispersion due to small size, large surface area, and agglomeration, affecting insulation performance and increasing costs with graphene-based solutions.
Innovation Solution
A modified carbon black with an acyl chloride group grafted onto its surface using an alcohol polymer, enhancing dispersion and maintaining insulation while providing light-shielding properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If carbon black is added to copper clad laminate for light-shielding, then light-shielding property is improved, but insulation performance deteriorates due to electrical conductivity of carbon black
Solution Approach 1:
An alcohol polymer is introduced as an intermediary substance that coats the carbon black particles. This polymer layer acts as a barrier that prevents direct electrical contact between carbon black particles while allowing the particles to maintain their light-shielding function. The polymer mediator effectively decouples the electrical conductivity property from the light-shielding property, enabling one function without the harmful side effect of the other.
Solution Approach 2:
The invention creates a composite material system consisting of carbon black particles coated with alcohol polymer. This composite structure combines the light-shielding properties of carbon black with the insulating properties of the polymer coating, achieving a material that exhibits both desired functions simultaneously. The composite approach allows the system to leverage the strengths of different materials while mitigating their individual weaknesses.
2Illumination intensity
If carbon black particles are used for light-shielding, then light-shielding effect is achieved, but stable dispersion is difficult due to small particle size, large specific surface area, and easy agglomeration
Solution Approach 1:
The alcohol polymer serves as a mediating substance that adsorbs onto the surface of carbon black particles, providing steric hindrance and electrostatic repulsion that prevents particle agglomeration. This polymer intermediary maintains particle separation and ensures stable dispersion in the copper clad laminate matrix, addressing the dispersion stability issue while preserving the light-shielding effect.
Solution Approach 2:
The invention changes the surface properties of carbon black particles by coating them with alcohol polymer. This modification alters parameters such as surface charge, surface energy, and hydrophilicity, which fundamentally change the interaction between particles and the surrounding medium, thereby improving dispersion stability without compromising the light-shielding capability.
3Reliability
If graphene is used to reduce light transmittance while maintaining insulation, then insulation performance is maintained, but cost increases due to high price of graphene
Solution Approach 1:
The invention replaces expensive graphene with carbon black, which is a much cheaper and more readily available material. By using the alcohol polymer coating strategy, the patent achieves the same functional outcomes (insulation and light-shielding) with a cost-effective alternative, making the solution economically viable for industrial applications.
Solution Approach 2:
The invention changes the material selection from high-cost graphene to low-cost carbon black, fundamentally altering the cost parameter while maintaining performance through surface modification. This parameter change in material choice, combined with the polymer coating approach, achieves cost reduction without sacrificing the required insulation and light-shielding properties.
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 modified carbon black achieves stable dispersion and maintains excellent insulation and light-shielding properties in copper clad laminates at a lower cost.
Implementation Method 1
the modified group is formed by reacting and grafting a modified polymer with the acyl chloride group
Implementation Method 2
absorb natural light from outside well, thereby improving the clarity and resolution of the LED display
Data Source
AI summary
The present invention relates to modified carbon black and a production method therefor, a resin composition and copper clad laminate. The modified carbon black comprises carbon black and a modified group; the surface of the carbon black has an acyl chloride group; the modified group is formed by a modified macromolecule and the acyl chloride group undergoing a grafting reaction; and the modified macromolecule is an alcohol macromolecule.