Thermal-Insulated Wall Panel Lofted Scrim Laminate
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Solution Overview
Problem
Thermal-insulating properties of polyurethane foam cores in insulated cargo vehicles degrade due to gas migration, moisture intrusion, and UV degradation, leading to increased thermal conductivity and reduced insulation efficiency over time.
Innovation Solution
A thermal insulated composite wall panel is developed using a laminate liner panel with a gas impermeable barrier layer and structural polymer resin, combined with a lofted scrim layer to enhance bonding with the insulated core, thereby preventing gas migration and UV degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional liner panel is used, then the initial thermal insulation performance is achieved, but thermal degradation occurs over time due to gas migration and moisture intrusion
Solution Approach 1:
The liner panel is constructed as a composite laminate structure comprising multiple layers including a gas-permeable layer, a gas-impermeable layer, and a UV-resistant layer. This composite structure combines the advantages of each material type to achieve both initial thermal performance and long-term stability by preventing gas migration, moisture intrusion, and UV degradation simultaneously.
Solution Approach 2:
The liner panel is divided into functionally distinct layers, each addressing a specific degradation mechanism. The gas-permeable layer allows controlled gas exchange, the gas-impermeable layer blocks moisture and gas migration, and the UV-resistant layer protects against ultraviolet degradation. This segmentation enables targeted protection against different failure modes.
2Stability of the object's composition
If a gas impermeable barrier layer is added to prevent gas migration, then thermal stability is improved, but the complexity of the liner panel construction increases
Solution Approach 1:
Multiple functional requirements (gas permeability, gas impermeability, UV resistance) are merged into a single integrated laminate structure. The layers are bonded together to form one cohesive component that performs multiple protective functions simultaneously, reducing the need for separate components and simplifying installation while maintaining the gas barrier function.
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 significantly reduces thermal degradation, maintaining low thermal conductivity and improving the long-term insulation performance of the cargo compartments by preventing gas leakage and moisture intrusion.
Implementation Method 1
a gas impermeable barrier layer and structural polymer resin, combined with a lofted scrim layer to enhance bonding with the insulated core, thereby preventing gas migration
Implementation Method 2
a lofted scrim layer to enhance bonding with the insulated core
Data Source
AI summary
A thermal insulated composite wall panel for use in insulated trailers, containers and insulated compartments, including a first liner panel, a second liner panel having a layer of fibers and at least one structural polymer resin layer disposed coplanar to and bonded with the layer of fibers, thereby forming a laminate liner panel, and an insulated core layer disposed intermediate to and bonded with the first and the second liner panels. The layer of fibers is adjacent the insulated core layer and is lofted prior to being bonded to the insulated core layer.