Polymeric Composite Textured Surface
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Solution Overview
Problem
There is a need for tailored and multifunctional polymer composites with enhanced properties, particularly those that maintain transparency, toughness, or flexibility, while also providing additional functionalities such as photocatalytic or bactericidal properties, and these should be achievable through low-cost, high-volume sustainable methods.
Innovation Solution
A composite comprising a textured surface with a plurality of protrusions and a bulk portion, both made of a polymeric matrix with particles concentrated in the textured surface, where the polymer is a thermoplastic polymer, and the particles are distributed between 1 nm and 100 µm in size. This composite is created using a process involving a thermoplastic polymer, a stable dispersion of particles, and imprinting with micrometric and nanometric patterns to form a reinforced micro/nanostructured surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If particles are distributed uniformly throughout the polymeric matrix, then the composite achieves good mechanical reinforcement, but the transparency and flexibility of the polymeric matrix deteriorate
Solution Approach 1:
The patent applies local quality by concentrating particles specifically in the textured surface region rather than distributing them uniformly throughout the bulk polymeric matrix. This localized particle distribution provides mechanical reinforcement and functional properties (such as photocatalytic or bactericidal activity) at the surface where they are most needed, while preserving the transparency, flexibility, and other desirable properties of the bulk polymeric matrix.
2Adaptability or versatility
If multifunctional properties are added to polymer composites, then the functional performance is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent merges multiple functions into a single composite material system. The polymeric matrix provides structural support and flexibility, the textured surface morphology provides super-repellency and anti-reflective properties, and the dispersed particles provide photocatalytic and bactericidal functions. This integration of multiple functionalities into one material reduces the need for separate coating layers or functional components, thereby simplifying manufacturing processes.
Solution Approach 2:
The patent employs composite materials by combining a polymeric matrix with dispersed particles (such as metal, metal oxide, or ceramic particles) and a textured surface morphology. This composite structure enables the material to exhibit multiple functions simultaneously: the polymeric matrix provides flexibility and transparency, the textured surface provides super-repellency and anti-reflective properties, and the particles provide photocatalytic and bactericidal activities.
3Productivity
If high-volume production methods are used, then productivity is improved, but the ability to maintain enhanced functional properties deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-forming the textured surface morphology on the polymeric matrix before particle incorporation, or by using master batches that pre-disperse particles in the polymer. This preliminary preparation ensures that when high-volume production occurs through extrusion or injection molding, the functional properties are consistently maintained without requiring complex post-processing steps that would reduce productivity.
Data Source
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AI summary
The present invention relates to a composite having a textured surface with a plurality of protrusions and a bulk portion. The composite of the invention comprises a polymeric matrix and particles, being the major amount of particles concentrated into the textured surface. The composite of the invention can be used as a structural coating, super-repellent material, antireflective material, or antimicrobial material among others.