Fire Protection Coating with Vapor Barrier for Extended Thermal Shielding
Solution Overview
Problem
Existing fire protection coatings fail to maintain a temperature below 100°C for a sufficient duration, especially for equipment like suspended pipes, and are ineffective at high temperatures, such as those found in pipes with hot fluids, limiting their usability.
Innovation Solution
A fire protection coating system combining a superinsulating material like silica aerogel or polyurethane aerogel with an endothermic material containing heat-releaseable water, such as metal oxides or magnesium hydroxide, and a vapor barrier to prevent steam infiltration, ensuring the superinsulating material remains effective and maintains the temperature below 100°C for over an hour.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If endothermic material is used to limit temperature rise to 100°C, then temperature control is improved, but the protection duration is insufficient and the system becomes ineffective at high temperatures
Solution Approach 1:
The patent combines three distinct materials into a composite fire protection coating: thermal insulation material (for heat resistance), endothermic material (for temperature control through phase change), and vapor barrier material (for steam containment). This composite structure allows each material to perform its specific function, achieving both extended protection duration and sustained temperature control below 100°C for over one hour.
2Duration of action of moving object
If thicker protection layers are used to extend protection duration, then duration is improved, but the system becomes too bulky and loses flexibility
Solution Approach 1:
The patent applies different materials with specific local functions at different positions within the coating structure. The thermal insulation material provides heat resistance, the endothermic material provides temperature control through phase change at specific locations, and the vapor barrier provides steam containment. This localized functional distribution achieves extended protection duration without requiring uniform thickness increases throughout the entire coating.
Solution Approach 2:
The endothermic material utilizes phase transitions (such as melting or decomposition) to absorb heat and maintain temperature control. This phase change mechanism provides extended protection duration in a compact form, avoiding the need for thick protection layers while sustaining temperature control below 100°C for over one hour.
3Stability of the object's composition
If vapor barrier is added to prevent steam infiltration, then insulation integrity is improved, but the device complexity increases
Solution Approach 1:
The patent merges the vapor barrier function with the existing multi-layer coating structure by integrating it as an additional layer among the thermal insulation material and endothermic material. This unified approach maintains insulation integrity by preventing steam infiltration while avoiding separate complex systems, as the vapor barrier operates as part of the integrated fire protection coating.
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 system effectively maintains a temperature below 100°C for an extended period by preventing steam infiltration and maintaining insulation integrity, reducing the thickness and mass of the protection while ensuring the endothermic material's effectiveness, even at high temperatures.
Implementation Method 1
endothermic material releasing water thus makes it possible to limit the temperature rise to 100°C
Implementation Method 2
endothermic system comprising an endothermic glue applied between layers of fibrous material
Implementation Method 3
a vapor barrier to prevent steam infiltration, ensuring the superinsulating material remains effective
Implementation Method 4
superinsulating material like silica aerogel or polyurethane aerogel with an endothermic material
Data Source
Figure 1~2
Figure 3A
Figure 3B
AI summary
Fire protection coating comprising one or more layers of thermal insulating material (2) in contact with the device to be protected (1) one or more layers of endothermic material (4a, 4b) covering the thermal insulating material and a vapor barrier (3) disposed between said thermal insulating material and endothermic material.