Honeycomb Composite with Polymeric Foam for Low Density Strength
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Solution Overview
Problem
Polymeric structural composites often increase the weight and density of building materials, which is a concern for applications where lightweight yet strong materials are needed.
Innovation Solution
A composite material comprising a structural support with cavities filled with a polymeric foam, where the foam has a density less than 5 pcf and the composite material achieves a compressive strength of at least 60 psi, using materials like polyurethane or polyvinylchloride with optional inorganic fillers, and methods such as pinch-roller thermoforming or thermoform stamping to prepare the composite.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polymeric structural composites are used to provide strength and structural integrity, then the compressive strength is improved, but the weight and density increase
Solution Approach 1:
The patent utilizes a honeycomb structural support comprising a network of interconnected cells with walls forming a porous framework. This porous structure provides high strength-to-weight ratio by distributing loads across the cellular architecture while maintaining low density, directly addressing the contradiction between compressive strength and weight
Solution Approach 2:
The patent creates a composite material system combining the honeycomb structural support (providing structural integrity and strength) with polymeric foam filling material (providing lightweight cushioning and additional strength). This composite approach allows optimization of both strength and weight characteristics by combining materials with complementary properties
2Strength
If polymeric structural composites are used to provide structural integrity, then the compressive strength is improved, but the density increases
Solution Approach 1:
The honeycomb structural support with its cellular porous structure provides high compressive strength relative to its low density. The interconnected walls and cells create an efficient load-bearing architecture that maintains strength while minimizing material quantity and density
Solution Approach 2:
The composite of honeycomb structure and polymeric foam creates a material system where the overall density is controlled by the proportion and properties of each component, allowing optimization of strength-to-density ratio for specific applications
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 composite material achieves a balance of low density and high compressive strength, making it suitable for use in place of traditional materials like lumber or plywood, with densities ranging from 1 pcf to 20 pcf and compressive strengths up to 200 psi, suitable for various building applications.
Implementation Method 1
a polymeric foam filling the plurality of cavities; wherein the polymeric foam has a density less than 5 pcf
Implementation Method 2
covering the structural support with a polymer mixture comprising a blowing agent, such that the polymer mixture foams to fill the cavities
Data Source
AI summary
Composite materials that include a structural support are described, wherein the structural support defines a plurality of cavities at least partially filled with a polymeric foam. The polymeric foam may have a density less than 5 pcf and/or the composite material may have a compressive strength of at least 60 psi.