Multi-layered Fibrous Thermoacoustic Insulation
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Solution Overview
Problem
Current materials used in industries such as automotive and construction lack effective thermoacoustic insulation, thermal resistance, and sound absorption while maintaining structural integrity at elevated temperatures, often being costly, brittle, and limited in adaptability across various applications.
Innovation Solution
A multi-layered fibrous material comprising lofted fibrous layers and nonwoven layers with metallic layers, designed for thermoacoustic applications, providing thermal insulation, sound absorption, and structural support across a wide temperature range, with adjustable properties for different applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional foams (open cell polyurethane, elastomeric foams) are used for thermal insulation, then thermal insulation performance is improved, but temperature resistance deteriorates (only survive up to 120-150°C)
Solution Approach 1:
The patent uses a composite structure combining inorganic fibers (glass, mineral, ceramic) with organic binders to create a material that achieves both thermal insulation and high temperature resistance. The inorganic fibers provide thermal stability up to 600-800°C while the organic binder matrix provides thermal insulation properties, resolving the contradiction between insulation performance and temperature resistance.
Solution Approach 2:
The patent employs porous fibrous structures with controlled porosity to achieve thermal insulation. The porous structure traps air and reduces thermal conduction, while the inorganic fiber framework maintains structural integrity at elevated temperatures. This porous composite approach enables simultaneous achievement of insulation and heat resistance.
2Reliability
If fiberglass or melamine foam are used when temperatures exceed 150°C, then temperature resistance is improved, but cost increases and handling difficulty increases
Solution Approach 1:
The patent modifies the physical and chemical parameters of the fibrous material by controlling fiber diameter, binder composition, and density to achieve optimal balance between temperature resistance and ease of handling. The inorganic fiber content and binder ratio are adjusted to provide high-temperature stability while maintaining flexibility and ease of installation, avoiding the brittleness of traditional high-temperature materials.
3Object-affected harmful factors
If alternative materials are used to replace conventional foams, then fire resistance is improved, but acoustic absorption performance deteriorates
Solution Approach 1:
The patent creates a composite material where inorganic fibers provide fire resistance and acoustic insulation, while organic binders and air pockets contribute to acoustic absorption. The combination achieves both fire safety and acoustic performance, as the porous structure absorbs sound while the inorganic framework prevents combustion.
Solution Approach 2:
The patent applies different material properties to different regions of the insulation system. The inorganic fiber network provides fire resistance throughout, while the organic binder distribution and pore structure are optimized for acoustic absorption. This localized optimization of material qualities enables simultaneous fire safety and acoustic performance.
4Reliability
If materials are made more robust to meet demanding standards, then reliability is improved, but adaptability deteriorates (limited to specific applications)
Solution Approach 1:
The patent designs a universal fibrous insulation material that can be applied across multiple industries and applications. The inorganic fiber composite structure provides consistent performance in thermal insulation, fire resistance, and acoustic absorption, making it suitable for automotive, construction, and industrial applications without requiring application-specific material formulations.
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 solution effectively maintains temperature and noise levels, absorbs excessive heat, and maintains structural integrity at elevated temperatures, being adaptable for various industrial applications while being fireproof and cost-effective.
Implementation Method 1
absorbs external heat to substantially prevent amplitude of temperature of the item or within the compartment
Implementation Method 2
configured for thermoacoustic applications to thermally insulate an item or compartment
Implementation Method 3
substantially prevents noise fluctuation radiated by the item or out of the compartment
Implementation Method 4
one or more layers that reflect heat while still maintaining improved sound absorption
Data Source
AI summary
An article comprising: (a) one or more lofted fibrous material layers comprising a lofted fibrous material; and (b) one or more nonwoven layers having a fibrous matrix; wherein the article is configured for thermoacoustic applications to thermally insulate an item or compartment; and wherein the article absorbs external heat to substantially prevent amplitude of temperature of the item or within the compartment and also substantially prevents noise fluctuation radiated by the item or out of the compartment. The article may also include one or more metallic layers disposed on one or more exterior surfaces of the article, wherein the one or more metallic layers are aluminum laminated glass cloth, aluminum foil, stainless steel, or a combination thereof. Additionally, the one or more metallic layers may also be embossed, micro-perforated, or a combination thereof.