The 6% AFFF/AR formulation is plagued by three prevalent industrial challenges including disproportionate component proportioning, poor system compatibility and insufficient stability: low dosage leads to slow spreading performance, inadequate sealing capacity and high fire re-ignition rate; high dosage triggers antagonistic reactions with alcohol-resistant additives and hydrocarbon surfactants, resulting in brittle foam, shortened drainage time and failed foam stabilization. In addition, stratification and precipitation tend to occur during storage under high and low temperatures, accompanied by foam breakdown at high temperature and freezing coagulation at low temperature. The formulation also suffers from insufficient anti-solvent breakdown resistance and thermal fire resistance against fires involving polar solvents, failing to meet the long-term fire protection requirements for hazardous chemicals.

Compound proportions are optimized targeting the antagonism drawbacks of the system to balance surface activity, foam stabilization, alcohol resistance and storage stability for mass production compliance:Fluorocarbon Surfactant 1158: 2.2% (optimal balanced dosage)Anionic/Nonionic Composite Hydrocarbon Surfactant: 18.5%Polymeric Alcohol-Resistant Foam Stabilizer: 6.5%Polyol Composite Antifreeze Agent: 28.0%Silicone Wetting Enhancer: 1.2%Anticorrosive Chelating Agent: 0.6%Deionized Water: Balance

A high-activity compound foam stabilizing system blended with Hydrocarbon using 1158 is adopted to eliminate defects from excessive or insufficient dosing. The system surface tension is reduced to 16–18 mN/m with interfacial tension ≤3 mN/m and consistently qualified spreading coefficient, generating uniform and compact foam to eliminate film peeling, film shrinkage and foam brittleness.

Combining the polymeric alcohol-resistant molecular structure with the film-forming advantage of fluorocarbon components, a dual protection system consisting of water film isolation and heat-insulating foam is constructed. It drastically improves the penetration resistance against polar solvents such as methanol, ethanol and acetone with remarkably prolonged breakdown resistance duration and greatly enhanced high-temperature anti-flashback and anti-reignition performance.

Formulation of polyol antifreeze and chelating stabilizing components eliminates ionic interference and temperature sensitivity, enabling stable storage ranging from -25℃ to 55℃ without stratification, precipitation or foam rupture and negligible performance degradation under ambient storage conditions.

Dosing trace silicone additives boosts wetting and spreading capacity on liquid surfaces and residual oil surfaces under variable temperatures to eliminate blind spots during fire suppression.

Foam expansion ratio: 7.5–8.2; 25% drainage time ≥4.5 min; fire extinguishing time for standard pan fuel fire ≤60 s; compliant high/low-temperature storage and excellent long-term storage stability; free of PFOS/PFOA residues and in line with environmental and fire protection specifications.

Raw materials are added sequentially below 40℃: water-soluble additives are dissolved first, followed by fluorocarbon 1158, and the surfactant synergistic compound system is introduced last. Homogenization is performed under constant stirring speed of 300–400 r/min. Finished product quality inspection centers on surface tension, drainage time and spreading performance as core test parameters.