Translucent Composite Film with UV Stabilizers for Vehicle Interiors
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Solution Overview
Problem
Existing highly translucent composite structures lack UV protection properties, which is a critical deficiency in materials used for interior vehicle applications.
Innovation Solution
A composite structure comprising a thermoplastic elastomer film layer and a lacquer layer, both containing UV stabilizers, is designed to provide UV protection while maintaining high transmittance and allowing visual perception of bulky additives, with the film layer having a thickness of 50 to 500 µm and the lacquer layer having a thickness of 3 to 50 µm, ensuring at least 60% transmittance within the 400 nm to 700 nm wavelength range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the composite structure is made thin to maintain translucency, then the transmittance is improved, but the UV protection capability deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the polymer material by incorporating specific UV stabilizer compounds (such as hindered amine light stabilizers and ultraviolet absorbers) at optimized concentrations. This allows the thin film structure to maintain both high transmittance and effective UV protection, resolving the contradiction between thickness and protective capability.
Solution Approach 2:
The patent creates a composite material system combining the base polymer matrix with multiple UV stabilizer components working synergistically. This composite approach enables the material to achieve both optical clarity and UV protection properties simultaneously, overcoming the limitation of thin structures lacking sufficient UV blocking capability.
2Object-affected harmful factors
If UV stabilizers are added to provide UV protection, then the UV protection property is improved, but the translucency deteriorates
Solution Approach 1:
The patent optimizes the concentration parameters of UV stabilizers within specific ranges (0.1-10 mass%, preferably 0.5-5 mass%) to balance UV protection and translucency. By controlling these compositional parameters, the material achieves sufficient UV blocking while maintaining high light transmittance and visual clarity.
Solution Approach 2:
The patent applies UV stabilizers selectively in the polymer matrix at controlled local concentrations, ensuring adequate UV protection is provided throughout the material thickness while minimizing impact on overall translucency. This localized optimization allows different regions of the material to fulfill their specific functional requirements.
3Object-affected harmful factors
If the film layer thickness is increased to improve UV protection, then the UV protection is improved, but the visual perception of bulky additives deteriorates
Solution Approach 1:
The patent optimizes the film thickness parameter within a specific range (50-500 μm) to balance UV protection and visual perception requirements. This controlled thickness ensures adequate UV blocking capability while maintaining sufficient optical clarity to perceive bulky additives such as natural particles or fibers embedded in the polymer matrix.
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 combines high UV protection with high transmittance, enabling decorative effects and protection against UV light, making it suitable for use as a coating material in vehicle interiors.
Implementation Method 1
both the film layer and the lacquer layer contain a UV stabilizer... having a transmittance of at least 60 % at λ max... allowing visual perception of the bulky additives through the translucent structure
Data Source
AI summary
A UV resistant composite structure containing a translucent structure composed of a film layer and a lacquer layer coating the film layer, wherein the film layer is made of a thermoplastic elastomer, has a thickness of 50 to 500 µm, and contains a UV stabilizer, and wherein the lacquer layer differs from the film layer in its composition, has a thickness of 3 to 50 µm, and contains a UV stabilizer, wherein the UV stabilizers protect the layers and bulky additives contained in a support layer; and the use of the composite structure as a surface material in the interior of a vehicle.