Thermoplastic Composite Flame Retardancy Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current composite materials used in industries such as building and construction, automotive, and recreational vehicles often fail to simultaneously provide adequate flame retardancy and noise reduction, necessitating the development of materials that can meet both performance criteria.
Innovation Solution
The development of lightweight reinforced thermoplastic composite articles featuring a porous core layer with a random arrangement of reinforcing fibers held by a thermoplastic material, incorporating a flame retardant agent and an open cell skin for noise reduction, which can achieve a noise reduction coefficient of at least 0.5 and a flame spread index of less than 25, as tested by ASTM standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional composite materials are used, then structural strength is provided, but flame retardancy and noise reduction performance are insufficient
Solution Approach 1:
The patent applies composite materials by combining a porous core layer made of thermoplastic material with reinforcing fibers and flame retardant agents, integrated with an open cell skin layer. This multi-layer composite structure simultaneously provides structural strength, flame retardancy through chemical agents, and noise reduction through acoustic absorption properties of the porous and open cell structures.
Solution Approach 2:
The patent utilizes porous materials by incorporating a porous core layer with controlled porosity that enables noise absorption while maintaining structural integrity. The porous structure allows sound waves to penetrate and be absorbed by the thermoplastic matrix and reinforcing fibers, achieving noise reduction without sacrificing strength or flame retardancy.
2Reliability
If flame retardant agents are added to achieve flame spread index less than 25, then flame retardancy is improved, but material complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated core layer that combines thermoplastic material, reinforcing fibers, and flame retardant agents. This consolidation eliminates the need for separate flame retardant treatments or coatings, reducing overall material complexity while achieving the required flame spread resistance of less than 25.
Solution Approach 2:
The patent applies parameter changes by optimizing the concentration and distribution of flame retardant agents within the thermoplastic matrix to achieve the target flame spread index. By adjusting material composition parameters and processing conditions, the patent achieves effective flame retardancy without excessive complexity in material formulation.
3Object-affected harmful factors
If open cell skin with high open surface area is used to achieve noise reduction coefficient of at least 0.85, then noise reduction is improved, but structural strength may be compromised
Solution Approach 1:
The patent applies segmentation by dividing the composite structure into distinct functional layers: a porous core layer for structural support and strength, and an open cell skin layer for noise reduction. This segmentation allows each layer to be optimized for its specific function—the core layer maintains structural integrity while the open cell skin achieves high noise reduction coefficients of at least 0.85 through its perforated structure with open surface area of at least 10%.
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
These composite articles effectively combine flame retardancy and noise reduction, meeting stringent industry standards while maintaining a lightweight and cost-effective profile, suitable for various applications including ceiling tiles, cubicle wall panels, and recreational vehicle interiors.
Implementation Method 1
the porous core layer comprising a web of open celled structures comprising a random arrangement of a plurality of reinforcing fibers held together by a thermoplastic material
Implementation Method 2
the porous core layer comprises a flame retardant agent
Implementation Method 3
wherein the composite article comprises a flame spread index of less than 25 and a smoke development index of less than 150
Data Source
AI summary
A thermoplastic composite article comprising a porous core layer and an open cell skin disposed on a first surface of the core layer is described. The composite article comprises a noise reduction coefficient of at least 0.5 as tested by ASTM C423-17 and a flame spread index of less than 25 and a smoke development index of less than 150 as tested by ASTM E84 dated 2009.