Application areas


Bringing material performance to real-world applications
Investment casting
Investment casting, also known as "lost-wax casting," is one of the earliest applications of silica sol. As a binder, it holds together refractory material particles—such as zircon sand—to form a robust mold shell. Zhenghe silica sol boasts excellent stability, minimal impurities, and uniform particle size, resulting in high mold-shell strength that can withstand both the erosive forces of molten metal at high temperatures and the static pressure exerted by the liquid. Additionally, castings produced using this method exhibit precise dimensions and exceptionally smooth surfaces, significantly enhancing the quality and accuracy of precision-cast parts. After solidification, the mold shell can be easily removed, leaving behind flawless finished products.
Model Recommendations: JN-830, JN-1430, SK Quick-Drying Silica Sol

Investment casting

Coatings and Coating Materials
Silica sol is an important inorganic nanomaterial, featuring a large specific surface area, strong adsorption capacity, high temperature resistance, water resistance, and good film-forming properties. It can be used as an auxiliary film-forming substance in coatings. Silica sol can be used alone or in combination with organic emulsions to prepare various functional coatings.
Model recommendation: JN30. Customization is available based on customer requirements.

Coatings and Coating Materials

Textile Industry
In the textile industry, silica sol is mainly used for fabric finishing. Through the sol-gel reaction of silica sol, a transparent and adhesive non-metallic oxide film is formed on the surface of the textile. This silica film has a good adsorption and curing effect on other auxiliaries used in textiles (such as polyvinyl alcohol, carboxymethyl cellulose, natural starch, dyes, etc.), thereby improving the textile production efficiency.
Model recommendations: SD-3040, JN-1430A, JN-30

Textile Industry

The paper-making industry
Due to the large specific surface area and high reactivity of silica sol, it can form strong chemical bonds with cationic surfactants and pulp fibers, effectively enhancing retention and drainage. This improves the retention rate of fine fibers and fillers, as well as the dewatering performance of the pulp. Additionally, silica sol creates nanoscale pores on the surface of the base paper, providing excellent color-fixing effects and significantly enhancing the clarity of colored patterns. It also boosts the paper's tensile strength, tear resistance, and burst resistance, while simultaneously making the paper surface smoother, reducing fiber shedding and powdering, and ultimately improving print quality.
Model Recommendations: TS-515, JN-30, SD-5040, SD-10050, SD-12040

The paper-making industry

Petrochemicals
As a catalyst support in petrochemical applications, silica sol exhibits excellent thermal stability, enabling it to withstand the high-temperature conditions encountered during catalytic reactions. Its high specific surface area provides an extensive dispersion platform for active components, significantly enhancing catalytic efficiency and accelerating chemical reactions.
Model Recommendations: JN-30, JN-40, SW-25, SD-8040, SD-10050, SD-12040, Low-Sodium Silica Sol

Petrochemicals

Electronics and Semiconductor Industry
The purity requirement for silica sol is extremely high (high-purity silica sol).
CMP polishing slurry: Used for precision chemical-mechanical polishing of surfaces such as silicon wafers, integrated circuits, storage hard drives, and optical glass, delivering ultra-flat, damage-free surfaces.
Electronic packaging materials: Used as a filler to enhance the heat resistance and mechanical strength of encapsulating materials such as epoxy resins.
Model recommendations: SD-10040, SD-12040, SD-8040, SD-5040, JN-30, JN-1430A—customization available based on customer-specific requirements.

Electronics and Semiconductor Industry

Refractory materials
As an inorganic binder, it can enhance the strength, high-temperature resistance, and thermal shock resistance of refractory products, making it widely used in high-temperature operational environments such as alumina-silica refractory fiber products, unshaped refractory materials, metallurgy, and building materials industries.
Model Recommendations: JN-30, JN-40, Ammonia-Type Silica Sol, Low-Sodium Silica Sol

Refractory materials

Daily-use cosmetics
As a functional additive that enhances dispersibility and skin-feel experience, it is used in facial masks, foundation liquids, and pressed powders, as well as serving as an abrasive and thickening agent in toothpaste, among other applications.
Model Recommendations: JN-830, JN-30, JN-1430A

Daily-use cosmetics

Building materials
As an additive for cement and concrete, it can enhance their strength and durability.
Model Recommendations: JN-30; Customization available upon customer request based on specific requirements.

Building materials

Food and Medicine
As a clarifying agent (used in beer, juices, etc.), anti-caking agent (used in powdered foods), and drug carrier. The silica sol used in these applications must be food-grade or pharmaceutical-grade.
Used in soy sauce brewing, it effectively adsorbs various impurities in the soy sauce, significantly enhancing its clarity while also preventing secondary sedimentation and the proliferation of microorganisms. Compared to natural sedimentation filtration, it enables impurities to be separated more thoroughly—and in a much shorter time frame.
Adding acidic silica sol to the solution after beer fermentation causes impure ions to form aggregates, which can then be removed, resulting in a clear and translucent product.
Model Recommendations: JN-30, SD-5040, SD-10050, SW-30

Food and Medicine