During the construction of epoxy floor coatings, screen printing inks, and UV-curable inks, which are solvent-free or have high solid content systems, mechanical stirring, pump circulation, and high-speed coating operations often introduce air bubbles, resulting in surface defects such as pinholes, shrinkage cavities, and fish eyes on the coating, which seriously affect the appearance and protective performance of the products. Traditional solvent-containing defoamers can quickly break the bubbles, but their volatile organic compound emissions are contrary to the environmental protection formula trend. Moreover, in solvent-free and high-viscosity systems, there are often compatibility issues or insufficient defoaming efficiency problems. Our company's product defoamer 29300, as a 100% solid content compound defoamer containing hydrophobic particle polysiloxane, with its excellent defoaming and anti-defoaming performance and high active content formulation design, demonstrates significant application value in the defoaming field of solvent-free/oil-based systems, providing efficient and environmentally friendly foam control solutions for customers in various industries.


I. Core Physical and Chemical Properties of the Product


Product defoamer 29300 is a semi-transparent to turbid liquid, with a non-volatile content higher than 98% at 150 degrees Celsius for three hours, and a viscosity of 200 to 500 millipascal-seconds. This product is a 100% solid content compound defoamer containing hydrophobic particles and polysiloxane complexes, specifically designed for oil-based systems and solvent-free systems. Its high active content means that a small amount of addition can achieve significant defoaming and anti-defoaming effects, providing higher efficiency and economy for formula design.


II. Core Performance Advantages


Product defoamer 29300, with its unique hydrophobic particle composite polysiloxane structure, exhibits the following core performance advantages in various solvent-free and oil-based systems:


Excellent defoaming and long-lasting anti-defoaming performance. The product contains hydrophobic particles and polysiloxane complexes, combining the functions of rapid defoaming and long-term suppression of foam regeneration, especially suitable for high-viscosity construction systems such as epoxy floor coatings and high-dynamic systems such as high-speed printing inks.


High active content and economic addition amount. The product is 100% solid content, with an addition amount of only 0.05% to 1% of the total formula, achieving the desired defoaming effect, significantly reducing the cost of additives and potential impact on other formula performances.


Compatible with solvent-free and oil-based systems. The product is specifically designed for solvent-free systems and oil-based systems, widely applicable to epoxy floor coatings, screen printing inks, UV-curable inks, and unsaturated polyester systems, etc.


III. Wide Application Areas


Product defoamer 29300, with its multi-functional performance combination, can play an important role in the following key application areas, including:


1. Epoxy floor coatings. During the construction of solvent-free or high-solid content epoxy floor coatings, the product can quickly eliminate air bubbles introduced during stirring and construction, ensuring a smooth and glossy surface of the floor coating without pinhole defects, meeting the requirements for appearance and durability.


2. Screen printing inks. In the screen printing process, the product can effectively eliminate air bubbles in the ink, avoiding defects such as white spots and sand holes in the printed patterns, ensuring the clarity and adhesion of the printed products.


3. UV-curable inks. In the formulation of UV-curable inks, the product can provide excellent defoaming performance without affecting the curing rate and coating adhesion, ensuring the flatness and glossiness of the cured film layer.


4. Unsaturated polyester systems. The product is suitable for unsaturated polyester resin and its composite material systems, effectively eliminating air bubbles during the molding process, avoiding defects such as pinholes and bubbles on the product surface, improving the structural density and mechanical properties of the product.


IV. Application Methods and Process Suggestions


The recommended dosage is 0.05% to 1% of the total formula. When used in transparent systems, the compatibility should be examined to ensure that it does not affect the transparency and gloss of the coating. Due to the high activity content of the product, it can be diluted to 10% with aliphatic or aromatic solvents in advance before being added, which is beneficial for its uniform dispersion in the system. Since hydrophobic particles are prone to precipitation, it is recommended to use up the diluted product immediately. This product has thixotropic properties. If left for a long time or stored at low temperatures, the viscosity may increase, which is a normal phenomenon. It is recommended to stir evenly before operation to facilitate use.


V. Packaging Specifications and Storage Conditions


Product defoamer 29300 is provided in 25-liter plastic drums or 200-liter plastic drums. Customization can also be done according to customer requirements. It is transported as non-hazardous chemicals, stored in a cool and dry place, sealed for preservation, and has a shelf life of 12 months. When the storage time exceeds the shelf life, the relevant properties of the product need to be rechecked before use.


VI. Quality Assurance and Market Value


Product defoamer 29300 has established a strict quality control system during production. Key indicators such as product appearance, non-volatile content, and viscosity are tested throughout the process to ensure consistency and reliability between batches. As industries such as solventless coatings, UV-curable inks, and composite materials continue to develop towards environmental protection and high performance, the demand for high-activity additives with both efficient defoaming and long-lasting inhibition functions is steadily increasing. This product, with its high-activity content design of 100% solid content, optimized defoaming performance for solventless/oil-based systems, and flexible addition methods, is becoming an important defoaming additive option in fields such as epoxy flooring, screen printing inks, and UV-curable inks, providing strong product support for promoting product quality improvement and process optimization in related industries.