Heat Storage Composition Flame Retardance via Gas Generation Temperature
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Solution Overview
Problem
Existing heat storage members, such as those containing paraffin, lack sufficient slow flame retardance, which is essential for preventing the expansion of combustion in heat storage compositions.
Innovation Solution
A heat storage composition comprising paraffin as the heat storage material and a flame retardant, specifically diammonium hydrogen phosphate, ammonium dihydrogen phosphate, or trimethyl phosphate, with a gas generation temperature of 100°C or higher, is developed to enhance slow flame retardance and ignition resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flame retardant is added to improve ignition resistance, then slow flame retardance deteriorates
Solution Approach 1:
The invention changes the key parameter of gas generation temperature of the flame retardant. By selecting flame retardants with a gas generation temperature of 100°C or higher (higher than the heat storage material's melting point), the invention achieves both improved ignition resistance and slow flame retardance. This parameter change resolves the contradiction by ensuring the flame retardant remains stable during normal heat storage operation while activating effectively during combustion events.
Solution Approach 2:
The invention creates a composite heat storage composition combining heat storage material (paraffin with melting point 40-60°C) and flame retardant (with gas generation temperature 100°C or higher) in specific proportions. This composite material approach allows the system to exhibit both good ignition resistance and slow flame retardance simultaneously, resolving the contradiction between these two flame safety properties.
2Object-affected harmful factors
If the gas generation temperature of the flame retardant is higher than the melting point of the heat storage material, then slow flame retardance improves, but ignition resistance deteriorates
Solution Approach 1:
The invention optimizes the gas generation temperature parameter of the flame retardant to be 100°C or higher, which is higher than the heat storage material's melting point (40-60°C). This specific parameter setting resolves the contradiction by achieving the right balance: the flame retardant remains stable during heat storage (improving slow flame retardance) while still providing effective ignition resistance due to its flame retardant 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 composition effectively suppresses combustion expansion by generating a flame extinguishing gas at a lower temperature than the heat storage material, thereby improving slow flame retardance and ignition resistance.
Implementation Method 1
a flame retardant, in which a gas generation temperature Tr of the flame retardant is lower than a gas generation temperature Ta of a specific composition
Implementation Method 2
a heat storage material, and a flame retardant
Implementation Method 3
The heat storage member includes a heat storage material that functions as a material that can store heat generated outside a heat storage layer
Data Source
AI summary
An object of the present invention is to provide a heat storage composition excellent in slow flame retardance and a heat storage member excellent in the slow flame retardance. Another object of the present invention is to provide an electronic device including a heat storage member, and a manufacturing method of a heat storage member.The heat storage composition according to an embodiment of the present invention contains a heat storage material and a flame retardant, in which a specific condition A is satisfied. The heat storage member according to an embodiment of the present invention contains a heat storage material and a flame retardant, in which a specific condition C is satisfied.