Potassium Perfluorobutanesulfonate: The "Invisible Guardian" for Flame Retardancy and Antistatic Properties of Engineering Plastics

With the rapid development of electrical and electronic equipment, automotive lightweighting and semiconductor packaging, the flame retardant and antistatic properties of engineering plastics have become critical thresholds for product safety. Polycarbonate (PC) is widely used in electronic housings, optical devices and automotive interiors due to its excellent transparency and mechanical strength. However, it has limited inherent flame retardancy. Traditional halogen-based flame retardants can improve flame resistance but usually compromise the transparency of materials and may release toxic hydrogen halide gases during combustion. Achieving efficient flame retardancy while maintaining the original transparency of materials has long been an unsolved technical contradiction in the engineering plastics industry. The emergence of perfluoroanionic surfactants provides a brand-new solution to this challenge, delivering dual functions of flame retardancy and antistatic performance at an extremely low dosage without impairing the optical properties of the substrate.

Potassium perfluorobutanesulfonate is a perfluoroanionic surfactant that features the general properties of fluorosurfactants, including low surface tension and high thermal stability. As a special additive for flame retardant and antistatic modification of engineering plastics, it exhibits outstanding performance in polycarbonate systems and is regarded as one of the best available flame retardants for PC materials. In addition, it is compatible with various transparent resins such as polystyrene, polyimide, polyester and polyamide. It can improve the flame retardant rating and transparency of materials simultaneously, realizing a win-win effect of "flame retardancy and high transparency".

Test Item	Quality Standard
Purity	≥ 99%
Appearance	Crystalline white powder
pH Value	5 ~ 7
Water Content	≤ 500 ppm
Sulfate Content	≤ 10 ppm
Free Fluorine	≤ 20 ppm
Calcium Content	≤ 30 ppm
Iron Content	≤ 5 ppm
Sodium Content	≤ 35 ppm
Particle Size (HS Grade)	75 ~ 180 μm
Particle Size (HSM Grade)	37 ~ 75 μm

The product is available in two particle size grades to adapt to different processing technologies. The HS grade is suitable for conventional compounding and extrusion processes, while the finer particle size distribution of the HSM grade facilitates uniform dispersion, making it ideal for precision injection molding scenarios with high dispersion requirements. The high purity of ≥99% and strictly controlled metal ion content (Ca ≤ 30 ppm, Fe ≤ 5 ppm, Na ≤ 35 ppm) ensure the reliability of materials in impurity-sensitive applications such as semiconductors and precision electronics.

Electrical and Electronic Industry: PC housings and connectors can achieve a V-0 flame retardant rating while maintaining high transparency, meeting the dual requirements of safety and aesthetics for consumer electronics and industrial equipment.

Automotive Industry: Against the backdrop of automotive lightweighting, PC/ABS alloys are widely used in automotive interiors and lighting systems. The low dosage requirement of potassium perfluorobutanesulfonate avoids degradation of material mechanical properties and endows products with long-term antistatic performance to reduce dust adsorption.

Semiconductors and Precision Electronics: The ultra-fine particle size of the HSM grade ensures uniform dispersion in high-performance resins such as polyimide, and the low metal ion content meets the cleanliness requirements of chip packaging environments.

Optical Materials: When compounded with transparent resins including PET and PS, the product causes no increase in haze after flame retardant treatment, applicable to high-transmittance-sensitive components such as optical lenses and display panels.

Containing a perfluoroalkyl sulfonate (PFAS) structure, this product is categorized as a persistent organic pollutant. Its production, application and waste disposal must strictly comply with local PFAS regulatory standards, including EU REACH, US TSCA and relevant Chinese industry specifications. Operators shall wear protective gloves and goggles to avoid inhalation of dust, and the product shall be hermetically sealed after opening to prevent moisture absorption. It may decompose to produce toxic gases such as hydrogen fluoride at high temperatures (>200°C), so sufficient ventilation must be ensured during processing.