Metallized textiles and process for manufacturing same
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Solution Overview
Problem
Current sun protection textiles struggle to achieve high solar radiation reflection indices (Rs >= 70%) while maintaining fire resistance classifications of M0 or A2s1d0 without using halogenated compounds, due to the presence of organic binders which hinder adhesion and flame retardancy.
Innovation Solution
A metallized textile with an inorganic fiber layer and a metallic layer separated by a polymeric intermediate layer, where the coupling polymer forms chemical bonds with both the textile and metal layers, incorporating flame retardant agents to ensure secure adhesion and fire resistance without halogen compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an organic binder is used to deposit metal particles or aluminum layer on the textile surface, then the metal adhesion is improved, but the fire resistance classification deteriorates (cannot achieve M0 or A2s1d0)
Solution Approach 1:
The patent introduces a silane coupling agent as an intermediary substance between the organic binder and the metal particles/layer. The silane coupling agent has dual functionality: it bonds chemically to the organic binder molecules and also forms strong chemical bonds with the metal surface. This intermediary layer enables secure metal adhesion while allowing the use of halogen-free flame retardant additives in the organic binder formulation, thus achieving both good adhesion and M0/A2s1d0 fire classification.
2Reliability
If halogenated compounds are used to achieve M0 or A2s1d0 fire classification, then the fire resistance is improved, but the environmental safety and non-toxicity deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters of the binder formulation by replacing halogenated flame retardant compounds with halogen-free alternatives. This parameter change is made possible by introducing silane coupling agents that provide sufficient adhesion strength without requiring toxic halogenated substances. The silane coupling agent enables the use of environmentally friendly, non-toxic flame retardant additives while maintaining M0 or A2s1d0 fire classification and secure metal adhesion.
3Reliability
If a polymeric intermediate layer with flame retardant agents is used, then the fire resistance is improved, but the metal adhesion may deteriorate
Solution Approach 1:
The silane coupling agent acts as a mediator within the polymeric intermediate layer, bridging the organic binder and metal surface. The silane molecules have reactive groups that bond to both the polymer matrix and the metal oxide surface, creating strong chemical bonds. This allows the polymeric layer with halogen-free flame retardant agents to maintain both fire resistance (M0/A2s1d0 classification) and secure metal adhesion, overcoming the typical trade-off between these two properties.
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 achieves Rs indices greater than or equal to 70% with secure metal adhesion and fire classifications of M0 or A2s1d0, mitigating the limitations of existing technologies by using a polymeric intermediate layer with reactive functions and flame retardant agents.
Implementation Method 1
the coupling polymer forms chemical bonds with both the textile and metal layers
Implementation Method 2
The greater the value of Rs, the higher the performance of a blind. This value of Rs is essentially a function of the outside surface state of the blind.
Implementation Method 3
incorporating flame retardant agents to ensure secure adhesion and fire resistance without halogen compounds
Data Source
AI summary
The present invention provides a textile metallized on at least one of its faces comprising a textile layer of inorganic fibers and a metallic layer, the textile being characterized in that the connection between the textile layer and the metallic layer is provided by a polymeric intermediate layer formed by a matrix having at least one coupling polymer in which at least one flame retardant agent is distributed, said coupling polymer being bonded by chemical bonds firstly to the textile layer and secondly to the metallic layer. The present invention also provides the method of fabricating this metallized textile.