Fluorine-Free Foam Extinguishing Agent Formulation
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Solution Overview
Problem
Current fire extinguishing methods using synthetic short-chain fluorocarbons pose ecological threats and lack stability, necessitating the development of a fluorine-free, environmentally friendly, and efficient foam extinguishing agent with improved spreadability and fuel vapor blocking ability.
Innovation Solution
A compound fluorine-free foam extinguishing agent comprising alkyl glycoside, polysiloxane quaternary ammonium salt, and silicon dioxide, prepared by a method involving controlled temperature and stirring to create a stable, high-expansion foam with enhanced fire extinguishing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluorocarbon surfactants are used to improve fire extinguishing effect, then fire extinguishing performance is improved, but ecological harm increases
Solution Approach 1:
The patent removes fluorocarbon components from the foam extinguishing agent formulation. The invention specifically develops a fluorine-free foam agent using alternative surfactants (alkyl polyglucoside and organosilicon surfactant) to eliminate the ecological harm associated with fluorocarbons while maintaining fire extinguishing effectiveness.
Solution Approach 2:
The patent changes the chemical composition parameters by replacing fluorocarbon surfactants with a combination of alkyl polyglucoside and organosilicon surfactants. This parameter change transforms the formulation from harmful fluorocarbon-based to eco-friendly alternative-based, achieving both ecological safety and effective fire suppression.
2Reliability
If organosilicon surfactant is used to improve spreadability and fuel vapor blocking ability, then foam performance is improved, but foam stability is insufficient
Solution Approach 1:
The patent employs a composite surfactant system combining alkyl polyglucoside (non-ionic surfactant) and organosilicon surfactant (cationic surfactant). This composite approach creates synergistic effects where the combination provides both the spreadability and fuel vapor blocking ability from the organosilicon component while the alkyl polyglucoside contributes to foam stability, resolving the contradiction between performance and stability.
Solution Approach 2:
The invention merges two different types of surfactants with complementary properties into a single foam agent formulation. The alkyl polyglucoside provides foam stability and environmental friendliness, while the organosilicon surfactant provides spreadability and fuel vapor blocking, achieving a balance of all required properties through combination.
3Object-affected harmful factors
If conventional hydrocarbon foam is used, then environmental friendliness is maintained, but fire extinguishing effect is insufficient compared to fluorocarbon foam
Solution Approach 1:
The patent develops a composite foam agent that combines alkyl polyglucoside and organosilicon surfactant to achieve fire extinguishing performance comparable to fluorocarbon foam. The organosilicon component specifically enhances fire suppression capability through its lipophobic flexible siloxane tail chains that effectively block fuel vapor, while maintaining environmental friendliness by eliminating fluorocarbons.
Solution Approach 2:
The invention changes the surfactant composition parameters from conventional hydrocarbon-based systems to a specialized combination of alkyl polyglucoside and organosilicon surfactants. This parameter change enables the foam to achieve both environmental compatibility and high fire extinguishing effectiveness, surpassing conventional hydrocarbon foam performance.
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 a high-stability, high-expansion, and environmentally friendly fire extinguishing foam with improved spreadability and fuel vapor blocking ability, demonstrating superior fire extinguishing performance and safety.
Implementation Method 1
spreading rapidly on the surface of a liquid fuel to form a foam layer and block fuel vapor from entering a flame
Implementation Method 2
absorbing heat by water vaporization and drainage to reduce the temperature at the surface of the fuel
Implementation Method 3
In-situ adsorption and modification of SiO2 nanoparticles by a surfactant is the first step to improve the stability of the foam
Data Source
AI summary
The present invention discloses a compound fluorine-free foam extinguishing agent and a preparation method therefor, comprising components of the following parts by weight: 6-8 parts of alkyl glycoside, 10-14 parts of polysiloxane quaternary ammonium salt, 0.5-1 part of silicon dioxide and 60-65 parts of water. The compound fluorine-free foam extinguishing agent prepared by the present invention has a high stability, a high expansion, an obvious fire extinguishing effect and a higher environment-friendliness. The polysiloxane quaternary ammonium salt contains hydrophobic polysiloxane long chains, has a high temperature resistance, and collaborates with the alkyl glycoside to be adsorbed on the surface of silicon dioxide particles, which improves the stability of the silicon dioxide in a solution and reduces the surface tension of the solution. The preparation method of the present invention is reasonable; by controlling the temperature and adjusting the stirring time of each component, the alkyl glycoside, the polysiloxane quaternary ammonium salt and silicon dioxide nanoparticles are fully and evenly mixed. In addition, the materials are cheap, and the resultants are safe to the environment, therefore, the present invention is a fluorine-free foam extinguishing agent with low cost and high environment-friendliness.