Black Liquid Crystalline Polymer Composition for Heat-Resistant Cookware
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional metal foodstuff articles are heavy, corrosive, and noisy, while high-performance polymers used in their place lack a black appearance, which is desirable for sleek products.
Innovation Solution
A liquid crystalline polymer composition incorporating carbon black particles to achieve a dark black appearance with good thermal and mechanical properties, characterized by a L* value of 30 or less, suitable for forming cookware and bakeware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional means are used to color liquid crystalline polymers, then the polymer maintains its inherent properties, but the desired black appearance cannot be achieved
Solution Approach 1:
The patent changes the chemical composition parameters of the liquid crystalline polymer by incorporating specific aromatic dicarboxylic acid units (terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid) and aromatic diol units to achieve inherent black coloration. This compositional parameter change allows the polymer to naturally exhibit black appearance without requiring additional conventional coloring processes.
Solution Approach 2:
The patent creates a composite liquid crystalline polymer system by combining multiple monomer units with specific functional groups and structural characteristics. The composite structure of aromatic dicarboxylic acid units and aromatic diol units in controlled molar ratios produces both the desired black color and maintains the polymer's high-performance properties including heat resistance and mechanical strength.
2Strength
If metal materials are used for foodstuff articles, then strength and thermal conductivity are improved, but weight and corrosiveness increase
Solution Approach 1:
The patent changes the material composition from traditional metals to a specifically formulated liquid crystalline polymer with aromatic dicarboxylic acid and aromatic diol units. This compositional parameter change reduces density and weight while maintaining mechanical strength through the rigid aromatic structure and controlled molecular weight (intrinsic viscosity 6-20 dL/g).
Solution Approach 2:
The patent employs a composite polymer system combining aromatic dicarboxylic acid units (providing structural rigidity and strength) with aromatic diol units (providing flexibility and processability). This composite structure achieves metal-like mechanical properties while eliminating metal drawbacks including weight, corrosion, and noise.
3Weight of moving object
If liquid crystalline polymer is used for foodstuff articles, then weight and corrosiveness are reduced, but black appearance cannot be achieved
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating specific ratios of terephthalic acid (10-50 mol%), isophthalic acid (10-50 mol%), and 2,6-naphthalenedicarboxylic acid (20-60 mol%) units. These compositional changes inherently produce black coloration while maintaining the lightweight polymer structure, eliminating the need for heavy metal pigments or complex coloring processes.
Solution Approach 2:
The patent creates a composite polymer system where aromatic dicarboxylic acid units provide both structural integrity and black coloration through their conjugated aromatic systems. The combination with aromatic diol units maintains processability and formability while the overall composite structure achieves both lightweight properties and desired black appearance.
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 composition provides a black appearance with high heat resistance, maintaining mechanical integrity and thermal stability, suitable for high-temperature applications without blistering, making it suitable for food preparation and storage.
Implementation Method 1
a black pigment that includes a plurality of carbon black particles
Data Source
AI summary
A shaped part that is formed from a polymer composition that contains a liquid crystalline polymer and a black pigment is provided. By selectively controlling the type and relative concentration of these components, the polymer composition and shaped parts formed therefrom can have a dark black appearance, and yet still exhibit good thermal and mechanical properties at high temperatures.