Polyurethane Casting Release Agent

Polyurethane casting release agents possess high tensile strength, making them resistant to polishing during frequent contact with molded resins. This is particularly true when the resin contains abrasive mineral fillers or glass fiber reinforcements. Polyurethane casting release agents are chemically resistant and do not dissolve when exposed to various chemical components of resins, especially styrene and amines. They also exhibit heat and stress resistance, minimizing decomposition or wear. These agents adhere to the mold without transferring to the processed parts, ensuring no interference with painting or other secondary processing operations.

Usage Instructions for Polyurethane Casting Release Agent:

1. Dilute the product with water at a ratio of 1:5.

2. Clean the template thoroughly before application.

3. Stir the product evenly and apply it to the template using a spray gun or brush.

Precautions for Polyurethane Casting Release Agent:

1. The product is highly lubricating; handle with care during application to prevent leaks and slips.

2. Avoid application on rainy days, but once dried, it is rain-resistant.

3. Do not store under direct sunlight.

Features of Polyurethane Casting Release Agent:

The coating is hard, glossy, and full-bodied, offering water resistance, wear resistance, rust prevention, and corrosion protection. It is especially suitable for projects requiring strict protection of templates and high-quality concrete appearance. It delivers excellent comprehensive benefits. Its features include:

Protecting the template and extending its service life. The coating provides outstanding anti-corrosion and anti-rust properties, ensuring the template remains rust-free even when stored outdoors or in damp conditions.

Enhancing the appearance of concrete, showcasing its natural color and achieving a "fair-faced concrete" effect. The finished concrete resembles marble, with a smooth, uniform surface, fine texture, and gloss, free from contamination. This elevates the aesthetic quality of concrete products, making it the preferred material for high-quality projects.

The coating surface is smooth, naturally forming an enamel-like layer that facilitates easy demolding and cleaning, improving work efficiency.

It is wear-resistant and has strong adhesion, allowing for multiple reuses.

Wide applicability for steel, wood, bamboo, and other types of molds.

6、Simple application; one coat is sufficient. Coverage: 15–20 square meters per kilogram.

The mixing ratio of polyurethane casting release agent to water typically ranges from 1:3 to 1:10, adjustable based on actual needs. For example, the dilution ratio can be flexibly adjusted according to the complexity of the castings and on-site conditions. Generally, the more complex the casting, the lower the dilution ratio.

The main components of polyurethane casting release agent include wax, stearic acid, vegetable oil, emulsifying aids, potassium hydroxide, etc., produced through heating, melting, and emulsification processes. It is characterized by safe operation, minimal environmental pollution, low health risks, excellent release performance, and biodegradability.

When using polyurethane casting release agent, it is recommended to dilute it with tap water and stir thoroughly. Determine the appropriate dilution ratio based on the complexity of the castings and on-site conditions. For complex castings, it is advisable to spray a uniform layer of diluted solution onto the mold after each demolding to ensure easy release in subsequent casting operations.