A Comprehensive Guide to Polysilazane Resin

"Polysilazane resin: a revolutionary coating material that forms an ultra-high hardness, superhydrophobic protective film on substrate surfaces, withstanding temperatures up to 1800℃, combining excellent chemical stability with the ability to penetrate and reinforce porous substrates. From industrial equipment to electronic components, it redefines cross-industry protection standards." Polysilazane resin is a high-performance polymer with a silicon-nitrogen bond main chain structure. When applied to various substrate surfaces, it can be cured at room temperature or by heat to form a transparent protective film with both ultra-high hardness and excellent hydrophobicity, significantly extending the service life of the substrate. Its unique -NH- active groups in its molecular structure can react efficiently with the -OH groups on the substrate surface, giving the coating an extremely strong bond between the coating and the substrate. This excellent adhesion is not only evident on conventional metal and glass surfaces, but also overcomes the interfacial challenges of difficult-to-adhere materials such as ceramics, various plastics, and graphite, achieving broad and reliable bonding.

This product exhibits comprehensive high-performance characteristics after curing, with its core advantages reflected in the following dimensions:

Exceptional High-Temperature Resistance: The product's theoretical temperature limit reaches 1800℃. Under high-temperature environments, it undergoes a subtle chemical transformation, converting into ceramic materials such as SiCN, SiCNO, or silicon dioxide. The cured coating achieves extremely high hardness, exceeding 8H, providing top-tier wear and scratch resistance.

Excellent Chemical Stability: It exhibits strong resistance to harsh chemical environments such as acids, alkalis, high-energy radiation, and salt spray corrosion. Its dielectric strength is not less than 10V/mm, making it an ideal choice for electronic insulation applications.

Wide Versatility: It can be used directly as a high-performance coating, as a precursor for advanced ceramics, and as a special binder. When compounded with other resin systems, it can significantly enhance the overall performance ceiling of the base resin.

Superior Insulation and Barrier Properties: Possessing excellent insulation, oxidation resistance, gas barrier properties, and radiation resistance, it has irreplaceable value in applications such as electronic component insulation, moisture protection encapsulation, and as a gas barrier film for electronic components.

Excellent Permeability and Reinforcing Effect: For porous materials such as cement and concrete substrates, this product exhibits significant reinforcing and sealing effects, strengthening the matrix structure.

Application Areas: Cross-Industry Solutions

This product demonstrates extremely broad industry applicability. It can be physically blended with most resins that do not chemically conflict, such as acrylic resins, silicone resins, polyurethanes, and epoxy resins, to create more balanced or superior performance mixtures. Therefore, it can be widely used in the following scenarios:

Industrial Protection: Surface treatment and long-term protection for ships, chemical pipelines, nuclear power facilities, and various industrial components.

Electronics and New Energy: Particularly suitable for the special protection needs of electronic and electrical products and new energy battery components.

Functional Coatings: Can be used as a film-forming substance for anti-corrosion coatings, inorganic coatings, heat-resistant coatings, ceramic coatings, and special inks. The resulting coating film possesses excellent waterproof, fireproof, and corrosion-resistant properties, and exhibits excellent resistance to alcohols, ketones, and many other organic solvents.

Application Guidelines and Operating Procedures

Application Methods: This product supports various mature processes including roller coating, spraying, curtain coating, dip coating, and spin coating. Key Points for Application:

Before application, ensure proper personal protective equipment is used, such as gloves and a mask.

Substrate pretreatment is crucial. Sandblasting and acid pickling are recommended to ensure the surface is free of grease, dust, and other contaminants that may affect adhesion.

For two-component systems, ensure uniform mixing to guarantee full performance.

Controlling film thickness is critical; adhere to the principle of "better thin than thick." The dry film thickness should not exceed 40 micrometers.

Select appropriate curing conditions (room temperature or heating) based on the product model and performance requirements. Dilution and Compatibility: This product has good compatibility with non-protic organic solvents (such as alkanes, aromatic hydrocarbons, ethers, ketones, esters, etc.). It is particularly important to note that this product is extremely sensitive to water; contact with moisture will trigger a curing reaction. Furthermore, it will react with other protic substances such as acids, alkalis, and alcohols. Suitable thinner types: ① Esters: such as ethyl acetate, dimethyl carbonate, etc. ② Alkanes: such as xylene, trimethylbenzene, n-hexane, etc. ③ Ethers: Ether solvents without alcohol hydroxyl groups must be used. Instructions for use:

Application methods include roller coating, spraying, curtain coating, dip coating, and spin coating.

Dilution with water is strictly prohibited. Various polar or non-polar drying solvents can be used for dilution.

Tools should be cleaned immediately after application using solvents such as ethanol or solvent oil for rapid cleaning.

To remove cured coatings, ordinary solvents are ineffective. Soaking in a strong alkaline solution (such as a 10% sodium hydroxide aqueous solution) for at least 5 hours can achieve removal.

The container lid should be replaced at all times during use to avoid prolonged exposure of the material to air.

Remaining material must be tightly sealed. If used in a humid environment, it is recommended to purge the container with nitrogen gas for protection after use.

For formulations requiring extremely high temperature resistance, the coated material needs to be heated to at least 550°C to ensure complete conversion of the polymer to a ceramic structure. Storage Conditions: The product should be stored in a cool, dry, and well-ventilated place, avoiding direct sunlight. The shelf life of the unopened product is one year. After opening, the usable period is affected by protective measures; under well-sealed, cool, and dry storage conditions, its usable period can be up to six months or more.

Safety and Environmental Requirements

This product must be handled by professionally trained personnel.

The product must be stored in a cool, dry environment; the recommended ambient temperature is below 25°C.

Uncured polysilazane resin must not be placed near fire, humid air, or water.

All application operations must be carried out in a well-ventilated, dry environment. Personnel must wear full protective gear, including gloves, masks, and safety goggles. In case of accidental ingestion or suspected excessive contact, seek immediate medical attention.