Dual-Rubber Folding Wall Sheet for Flame Resistance and Flexibility
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Solution Overview
Problem
Existing folding wall technologies face challenges in balancing high flame resistance, color stability, and cost-effectiveness, as silicone rubber coatings provide superior flame resistance and color stability but are expensive, while organic elastomer coatings are cheaper but less flexible and prone to color changes, especially when exposed to weather and sunlight.
Innovation Solution
A sheet material for folding walls featuring a reinforcement element coated on one side with silicone rubber and the other side with organic rubber, such as CSM, where the silicone rubber is vulcanized first, followed by vulcanization of the organic rubber layer, allowing for a combination of high flame resistance and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcement element is coated with silicone rubber, then flame resistance and color stability are improved, but manufacturing cost increases
Solution Approach 1:
The patent applies different coating materials to different sides of the reinforcement element based on local requirements. The exterior side (exposed to weather and fire) receives silicone rubber coating for flame resistance and color stability, while the interior side receives organic elastomer coating for flexibility and cost-effectiveness. This local differentiation resolves the contradiction by providing high performance only where needed.
Solution Approach 2:
The patent creates a composite structure with a reinforcement element having dual coatings of different material types (silicone rubber on one side, organic elastomer on the other). This composite approach combines the advantages of both materials - the flame resistance of silicone rubber where required and the flexibility and lower cost of organic elastomer where sufficient, thereby resolving the cost-performance contradiction.
2Ease of manufacture
If a reinforcement element is coated with organic elastomer, then manufacturing cost is reduced, but flame resistance and color stability deteriorate
Solution Approach 1:
The patent applies different coating materials to different sides of the reinforcement element based on local requirements. The exterior side (exposed to weather and fire) receives silicone rubber coating for flame resistance and color stability, while the interior side receives organic elastomer coating for flexibility and cost-effectiveness. This local differentiation resolves the contradiction by providing high performance only where needed.
Solution Approach 2:
The patent creates a composite structure with a reinforcement element having dual coatings of different material types (silicone rubber on one side, organic elastomer on the other). This composite approach combines the advantages of both materials - the flame resistance of silicone rubber where required and the flexibility and lower cost of organic elastomer where sufficient, thereby resolving the cost-performance contradiction.
3Stability of the object's composition
If a reinforcement element is coated with silicone rubber, then color stability is improved, but flexibility is reduced
Solution Approach 1:
The patent applies different coating materials to different sides of the reinforcement element based on local requirements. The exterior side (exposed to weather and fire) receives silicone rubber coating for flame resistance and color stability, while the interior side receives organic elastomer coating for flexibility and cost-effectiveness. This local differentiation resolves the contradiction by providing high performance only where needed.
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 high flame resistance and color stability on the exterior while meeting interior requirements, ensuring the folding wall remains flexible over a wide temperature range and retains its color, thus addressing the limitations of single-coating technologies.
Implementation Method 1
After applying the coating, curing takes place to produce the respective elastomer, whereby the process of vulcanization occurs at elevated temperature through the commercially available crosslinking agents that are present in the blend ingredients.
Implementation Method 2
After applying the coating, curing takes place to produce the respective elastomer, whereby the process of vulcanization occurs at elevated temperature through the commercially available crosslinking agents that are present in the blend ingredients.
Data Source
AI summary
The subject of this invention is a sheet of material for the manufacture of a folding wall of a transition between two articulated vehicle units, as well as the folding wall of a passenger boarding bridge or passenger stairs, wherein the sheet material has at least one reinforcement element, with the reinforcement element is coated on both sides with a plastic layer, wherein the at least one reinforcement element has on one side a coating based on a silicone rubber and on the other side a coating based on an organic rubber.