Application Mechanism and Supporting Process Formula of 1630 Fluorocarbon Surfactant, a Special Wetting Agent for Automotive Films
#Industry News
·2026-05-12 18:42:24
The original base coils dedicated to automotive color change films, paint protection films and functional protective films have a constant measured surface tension range of 30–45mN/m under normal conditions, posing high difficulty in adaptation and matching. Conventional universal wetting additives and basic supporting coating stock solutions have an excessively high surface tension threshold, failing to achieve self-adhesion and leveling coating. During mass production construction and on-site film laminating & coating processes, surface defects such as shrinkage cavities, pinholes, pitted surfaces, orange peel texture and partial missing coating & substrate exposure frequently occur, resulting in high loss from large-scale rework and repair.
After quantitatively adding 1630 fluorocarbon surfactant to modify and prepare the coating working fluid, the highly active and dense fluorocarbon hydrophobic segments of the product can undergo rapid directional migration, accurately accumulating and anchoring at the gas-liquid two-phase interface of the system and the liquid-solid bonding interface between the coating and film substrate. It rapidly reduces the dynamic surface tension of the entire coating working fluid to below the critical adhesion surface energy threshold of automotive film substrates. Relying on the natural difference in interfacial tension, it realizes overall self-leveling, automatic adhesion and spreading, as well as full coverage wetting and bonding without dead angles. It fundamentally solves frequent industrial process pain points in automotive film coating construction including substrate poor wetting, local spot shrinkage cavities, uneven coating thickness and batch apparent color difference fluctuation from the source of formula design. It is applicable to full-scenario construction conditions such as assembly line high-speed roller coating, manual curtain coating and precision spray coating.
During the whole process of warehousing & turnover, slitting & cutting and on-site construction & lamination of finished automotive film substrates, the surface is prone to adsorb and retain hidden interfacial impurities such as thin free air layers, trace oil and dust generated in workshop processing, and tiny water molecules condensed from ambient moisture. Impurity barrier directly forms a micro hollow gap interlayer between coating resin and film substrate, damaging the integrated bonding structure. In the later stage, durability failure problems such as coating loosening, edge warping, overall delamination and peeling, and glue detachment caused by rain erosion are highly likely to occur.
1630 fluorocarbon surfactant features excellent interfacial displacement and permeation activity. It can quickly penetrate the surface hidden impurity film layer, fully displace and remove residual air, light oil stains and condensed micro moisture at the substrate bonding interface, completely eliminating micro hollow barrier gaps and effectively expanding the physical contact area between coating functional resin and the substrate. Meanwhile, the hydrophilic active polar end groups of the product can accurately connect and anchor with the active polar groups on the surface of automotive film substrates, forming a stable and high-strength hydrogen bond composite structure, and bidirectionally enhancing interfacial composite adhesion and interlayer bonding stability. It comprehensively avoids delamination and glue detachment risks of automotive films under long-term outdoor service, car washing scouring and alternating high-low temperature conditions, and simultaneously improves the overall compactness of the cured composite coating, as well as comprehensive physical protection properties including surface scratch resistance, hard object scratch resistance and wear resistance.
1630 fluorocarbon surfactant boasts fast interfacial adsorption response rate and strong compatibility. It can rapidly destroy the stable structure of dynamic bubble elastic film in the coating system, and achieve synergistic efficiency with special defoamers and polymer leveling agents in the supporting system. It efficiently eliminates hidden defects such as microbubbles, closed bubbles, through pinholes and fine pits generated in all process links including workshop mechanical mixing, high-speed coating rolling, and normal/high temperature curing film formation, ensuring a flat, transparent and high-gloss surface texture of the film.
The core skeleton fluorocarbon chemical bond features extreme chemical inertness, UV aging resistance, acid and alkali corrosion resistance, and stability against alternating high and low temperatures. After the coating is fully cured and film-formed, it can construct an ultra-thin, uniform and dense protective barrier layer on the outermost surface of automotive films, strongly blocking direct outdoor ultraviolet radiation, acid rain corrosion, dust and oil adhesion, and oxidative damage from high-temperature exposure. It greatly improves the stain resistance, easy-to-clean performance, long-term yellowing resistance, aging resistance and full-range weather resistance of finished automotive films, effectively extending the actual outdoor service life of fully paved automotive films and reducing later operation, maintenance and replacement costs.
Core Application Scenarios: Full vehicle paving of new energy vehicles, indoor and outdoor general protective films, environmentally friendly assembly line mass production coating; working conditions with low odor, low VOC and compliance with environmental protection standards
Water-based polyurethane/acrylic composite functional resin: 40%–60%. As the core film-forming skeleton raw material, it determines the basic toughness, bonding strength and protective substrate performance of the coating.
High-purity deionized water: 30%–50%. An environmentally friendly and odorless dispersing and diluting medium that adjusts the suitable viscosity of coating working fluid and adapts to high-speed assembly line automatic construction.
1630 Fluorocarbon Surfactant: 0.1%–0.2%. The core main wetting functional additive, which accurately adapts to low surface energy film materials, undertakes multiple core functions including overall wetting, interfacial bonding and weather resistance enhancement. The optimal dosage is strictly controlled to ensure cost performance and process stability.
Fatty alcohol polyoxyethylene ether: 0.3%–0.8%. An auxiliary synergistic wetting and modifying additive that further optimizes the dynamic leveling performance of the system, improves compatibility for low-temperature construction and prevents additive delamination and precipitation.
Polyether modified silicone special leveling agent, food-grade environmentally friendly organic silicon defoamer, special film-forming antifreeze and maintenance additive: Added in appropriate amounts as required, fine-tuned according to on-site workshop temperature and humidity conditions to stabilize the coating process indicators of all batches.
Core Application Scenarios: Outdoor high-frequency service conditions, renovation and paving of old vehicles, full vehicle film pasting in harsh high-low temperature regions; working conditions requiring strong weather resistance, high wear resistance, high adhesion and high strength
Solvent-based acrylic/high-purity fluorocarbon composite resin: 50%–70%. A high-strength weather-resistant film-forming main material that builds a tough impact-resistant and corrosion-resistant integrated composite protective coating system.
Special composite balanced mixed solvent: 20%–35%. Dissolves polymer resin evenly, accurately adjusts the construction viscosity suitable for spraying and roller coating, with balanced volatilization and no residual defects.
1630 Fluorocarbon Surfactant: 0.05%–0.15%. Recognized as the optimal dosage range in the industry. It features low dosage and high activity, providing multiple empowerments including powerful wetting, interfacial anti-delamination and long-term weather resistance, without affecting the curing reaction rate of the solvent system.
Low-foam acetylenic diol wetting additive, high-gloss pure acrylic leveling agent, supporting curing agent with precise proportion: Added in quantitative proportion as required to ensure rapid curing, high-gloss flat film formation and strong interlayer adhesion, adapting to harsh all-weather outdoor service requirements.
