Rheology Modifier

In the microscopic world of materials science, there is an "industrial MSG" (monosodium glutamate). Though invisible to the naked eye, it profoundly alters the performance of many products. This is fumed silica. Today, we will focus on the star product of Zhengzhou Gesee New Materials Co., Ltd. — K380 (a hydrophilic fumed silica with a specific surface area of 380 m²/g) — and explore how this high-performance material excels in various fields.   Meet K380: More Than Just "High Surface Area" K380 is a nano-scale hydrophilic fumed silica produced by Zhengzhou Gesee through a high-temperature hydrolysis process. Its core parameter—a specific surface area of 380 m²/g—means it has an extremely fine primary particle size (about 7 nm) and high surface energy. Compared to conventional products with a surface area of 200 m²/g (like AEROSIL 200), K380 is finer and stronger, which allows it to provide more significant thickening and thixotropic effects in applications. In the global market, K380 has well-known "benchmark models," such as Evonik's AEROSIL® 380, Cabot's EH-5, and WACKER's T40. The emergence of Zhengzhou Gesee K380 aims to provide the market with a high-quality, cost-effective domestic alternative.   The "Rheology Master" for Paints and Inks For high-end coatings, especially UV-curable coatings and waterborne industrial anti-corrosion coatings, preventing sagging during application and sedimentation during storage are two major challenges. Thanks to its high specific surface area, K380 is rich in silanol groups on its surface. After dispersion in the system, these silanol groups form hydrogen bonds, building a strong three-dimensional network structure.   At rest: The network structure is robust, increasing the system's viscosity and effectively preventing the settling of pigments and fillers. During application: When subjected to shear forces (such as spraying or brushing), the network structure breaks down, viscosity drops instantly, ensuring good leveling. Upon recovery: When the shear force ceases, the network rebuilds quickly, preventing the wet film from sagging. Research shows that adding hydrophilic fumed silica to UV plastic coatings can significantly increase viscosity at low shear rates—an area where K380 excels. In two-component waterborne acrylic systems, an appropriate amount of hydrophilic product can significantly enhance the system's thixotropy and salt spray resistance.   The "Reinforcing Pillar" for Adhesives and Sealants In the field of silicone rubber and adhesives, K380 is an indispensable reinforcing filler. Especially for addition-curing liquid silicone rubber (HCR/LSR) requiring high transparency, the nano-scale particle size of K380 is much smaller than the wavelength of visible light. Therefore, it can greatly enhance the material's tear and tensile strength without affecting transparency. In cable compounds and unsaturated polyester resins, K380 also provides reinforcement and thixotropic control through its three-dimensional network structure, ensuring the uniformity of cable compounds and the non-sagging properties of resins on vertical surfaces.   The "Stability Guardian" for Complex Systems Agricultural ChemicalsIn modern agrochemical formulations, whether for Suspension Concentrates (SC) or Oil-based Suspension Concentrates (OD), physical stability is key. K380 can act as an efficient anti-settling agent and rheology modifier. It prevents the active ingredient particles from aggregating or sedimenting during storage, ensuring that farmers only need a slight shake before use to restore uniformity and guarantee efficacy. Powder ProductsFor powdered substances, such as food additives or fire extinguishing agents, K380 can act as a flow aid and anti-caking agent. Its nanoparticles attach to the surface of the host powder, acting like "ball bearings" to reduce inter-particle friction, or absorbing excess moisture to prevent caking, thus maintaining good flowability.   Why Choose Zhengzhou Gesee K380? In the context of global supply chain diversification, domestic high-performance materials are ushering in a springtime. K380 is benchmarked against international standards, possessing a stable high specific surface area of 380 m²/g, ensuring the reliability of its thickening and reinforcing properties. Meanwhile, as a local brand, Zhengzhou Gesee can provide faster technical responses and a stable supply guarantee, helping enterprises reduce procurement costs and enhance market competitiveness   Conclusion From the sealants in precision electronic components to the anti-corrosion coatings on large machinery, and even in agrochemicals that ensure food security, Zhengzhou Gesee K380, with its nano-scale size and micro-scale efficacy, silently guards every innovation in modern industry. If you are looking for a hydrophilic fumed silica that combines high performance with economy, K380 is undoubtedly a trustworthy choice.      

For decades, AEROSIL® 200 has been one of the most recognized hydrophilic fumed silica grades in the global specialty chemicals market. Known for its excellent thickening efficiency, rheology control, and reinforcement performance, it has become a preferred choice across industries such as coatings, adhesives, sealants, silicone rubber, inks, and composites. However, many manufacturers today are actively looking for cost-effective alternatives to AEROSIL 200 due to rising material costs, longer supply chains, and the need for more flexible sourcing options. At Zhengzhou Gesee New Materials Co., Ltd., we developed GESEESIL A200 as a high-performance replacement solution designed to match the key characteristics of AEROSIL 200 while offering competitive commercial value. Why Are Buyers Looking for Alternatives to AEROSIL 200? While AEROSIL 200 has long set the benchmark for hydrophilic fumed silica, many downstream manufacturers are now facing practical challenges: Increasing procurement costs Supply fluctuations in some regional markets Longer international lead times Limited sourcing flexibility For formulators, switching to an alternative is not only about price reduction. It is about finding a product that can deliver comparable rheological performance, stable quality, and reliable technical consistency. That is where GESEESIL A200 offers a practical solution. What Makes GESEESIL A200 Comparable? GESEESIL A200 is a hydrophilic fumed silica with a specific surface area of approximately 200 m²/g, engineered to provide performance characteristics similar to AEROSIL 200 in demanding industrial formulations. Typical benchmark values for this class are around 180–220 m²/g BET surface area with high SiO₂ purity and strong dispersibility. It provides: Excellent thickening efficiency Strong anti-settling performance Effective thixotropic control Good dispersibility in resin systems Reliable reinforcement in silicone elastomers Consistent batch-to-batch stability These properties make it suitable for direct evaluation in existing formulations with minimal reformulation effort. Typical Applications GESEESIL A200 performs well in a wide range of industrial systems, including: Coatings and Paints Improves sag resistance, suspension stability, and flow control while enhancing storage stability. Adhesives and Sealants Provides viscosity adjustment and anti-slump properties for easier processing and improved application consistency. Silicone Rubber Acts as a reinforcing filler to improve tensile strength and mechanical performance. Printing Inks Helps control rheology and improves pigment suspension behavior. Composite and Resin Systems Enhances structural consistency while reducing filler sedimentation during storage. Performance Meets Cost Efficiency For many manufacturers, qualification of a new raw material depends on balancing technical performance with overall production economics. GESEESIL A200 offers: Competitive pricing compared with premium imported grades Stable export supply Flexible packaging solutions Technical support for product evaluation Faster response and customized cooperation options This allows manufacturers to optimize production cost without sacrificing product quality. How to Evaluate a Replacement Successfully When replacing AEROSIL 200, we recommend evaluating: Viscosity build-up behavior Dispersion efficiency Thixotropic recovery Reinforcement effect Final product appearance Long-term storage stability Our technical team can provide sample support and application guidance to help customers complete validation efficiently. Looking for a Reliable AEROSIL 200 Alternative? If your company is evaluating alternatives to imported fumed silica grades, GESEESIL A200 offers a practical balance of performance, consistency, and cost advantage. At Zhengzhou Gesee New Materials Co., Ltd., we are committed to supplying high-quality fumed silica solutions for global industrial customers. Contact us today to request technical data, samples, or application support.