Aerosol Composition Fire Safety Emulsification
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Solution Overview
Problem
Current aerosol compositions face inefficiencies in emulsifying aqueous concentrates and liquefied gases, requiring shaking devices and posing safety concerns due to the inflammability of liquefied gases.
Innovation Solution
An aerosol composition comprising 10-60 wt% aqueous concentrate with a surfactant and water, and 40-90 wt% liquefied gas, where the liquefied gas includes a heavy hydrofluoroolefin and a light liquefied gas, achieving easy emulsification and enhanced fire safety by forming sherbet, foam-cracking sounds, or independent soap bubble foams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If aqueous concentrate and liquefied gas are emulsified by shaking in an aerosol container, then emulsification is achieved, but production efficiency deteriorates due to requiring removal from production line and use of shaking devices
Solution Approach 1:
The aqueous concentrate is pre-mixed with a water-soluble polymer and surfactant before filling into the aerosol container. This preliminary preparation of the aqueous phase allows for spontaneous emulsification with the liquefied gas upon filling, eliminating the need for post-filling shaking operations and external emulsification devices, thereby improving production efficiency while maintaining stable emulsion formation
2Ease of operation
If liquefied gas is used in aerosol composition, then propellant function is achieved, but fire safety deteriorates due to inflammability of liquefied gas
Solution Approach 1:
A water-soluble polymer acts as an intermediary substance that forms a protective aqueous matrix around the liquefied gas. This polymer-based medium suppresses the inflammability of the liquefied gas by creating a physical barrier and diluting the gas within the aqueous concentrate, thereby maintaining propellant functionality while significantly improving fire safety
Solution Approach 2:
The invention changes the physical state and concentration parameters of the liquefied gas within the aerosol composition. By controlling the amount of liquefied gas (40-90 wt%) and its distribution within the aqueous concentrate, the system maintains sufficient propellant pressure while reducing the overall flammability risk through proper composition ratios
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 ensures efficient emulsification and high fire safety, with the formation of stable foams that adhere well to surfaces, effectively suppressing flame elongation and adhering suspended matters, while being safe to use.
Implementation Method 1
an aerosol composition which is high in fire safety and assures easy emulsification of an aqueous concentrate and a liquefied gas
Implementation Method 2
when this aerosol composition is sprayed, foams emitting a foam-cracking sound are formed
Data Source
AI summary
There is provided an aerosol composition which is high in fire safety and assures easy emulsification of an aqueous concentrate and a liquefied gas. The aerosol composition comprises 10 to 60 wt% of an aqueous concentrate and 40 to 90 wt% of a liquefied gas, and is obtained by emulsifying the aqueous concentrate and the liquefied gas, wherein the liquefied gas comprises a heavy liquefied gas (a) having a liquid density at 20°C of from 1.15 to 1.30 (g/ml).