Aromatic Amide Oligomer Flow Aid for High Performance Polymers
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Solution Overview
Problem
High performance thermoplastic polymers like polyetherimide and polyetheretherketone exhibit poor melt flow properties, making processing difficult and limiting their thermo-mechanical properties in final products.
Innovation Solution
A polymer composition combining high performance polymers with aromatic amide oligomers that reduce viscosity and enhance mechanical properties by hydrogen bonding, improving melt flow and thermo-mechanical properties without reacting with the polymer backbone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high performance thermoplastic polymers are used to achieve high glass transition temperature and resistance to warp, then heat resistance is improved, but melt flow properties deteriorate making processing difficult
Solution Approach 1:
The patent changes the chemical structure parameters of the polymer by introducing aromatic amide oligomers with specific molecular weights and functional groups. This modifies the polymer's physical properties, reducing melt viscosity while preserving the high glass transition temperature, thus resolving the contradiction between heat resistance and processability
Solution Approach 2:
The patent creates a composite material system by combining high performance thermoplastic polymers with aromatic amide oligomers. The oligomers act as modifiers that improve melt flow properties without compromising the thermal performance of the base polymer, enabling both heat resistance and ease of manufacturing
2Strength
If high performance thermoplastic polymers are used to achieve required tensile and flexural properties, then mechanical strength is improved, but melt flow properties deteriorate
Solution Approach 1:
The patent modifies the molecular weight parameters of the polymer system by incorporating oligomers with controlled molecular weights. This changes the rheological behavior and melt flow characteristics while maintaining or enhancing mechanical strength properties, resolving the contradiction between strength and processability
3Strength
If high performance thermoplastic polymers are used to achieve impact strength, then durability is improved, but melt flow properties deteriorate
Solution Approach 1:
The patent develops a composite polymer system where aromatic amide oligomers are integrated with high performance thermoplastics. The oligomers enhance impact strength through energy dissipation mechanisms while simultaneously improving melt flow, thus resolving the contradiction between durability and manufacturability
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 polymer composition achieves reduced melt viscosity and improved tensile, flexural, and impact strength, along with enhanced heat distortion temperature, facilitating easier processing and better final product properties.
Implementation Method 1
aromatic amide oligomers that reduce viscosity and enhance mechanical properties by hydrogen bonding
Data Source
AI summary
A polymer composition that contains at least one high performance polymer and at least one aromatic amide oligomer is provided. The oligomer can serve as a flow aid that lowers the overall viscosity of the polymer matrix under shear.