Precast formwork release agent

Precast Form Release Agent

Precast form release agent has strong adhesion, allowing it to adhere preferentially to the mold without transferring to the molded part. It can also modify the resin surface, improving resin flowability and enhancing surface quality. It is widely used for demolding in molds, silicone rubber, plastics, and other products.

Precast form release agent is mainly suitable for demolding various concrete products such as bridges, tunnels, highways, high-speed railways, subways, buildings, precast components, double T-beams, partition panels, flues, composite slabs, stairs, subway segments, inspection wells, cement pipes, wind turbine towers, curb stones, trench covers, hexagonal blocks, precast U-shaped channels, leak plates, flower pots, imitation wood piles, and more. Customized solutions are provided, backed by extensive sales experience and strong communication skills, earning the trust of customers. Free samples are available upon submission of information.

Precast form release agent refers to a substance applied to construction templates before concrete pouring to prevent the template from sticking to the concrete surface, facilitate easy demolding, and avoid affecting the smoothness of the concrete surface. Its primary function is to form a film between the template and the concrete surface, isolating the two, hence it is also known as a parting agent.

Main Uses of Precast Form Release Agent:

Widely used in various steel templates, wooden templates, bamboo plywood, plastic boards, and concrete surfaces in concrete engineering.

Advantages of Precast Form Release Agent:

1. Quick film formation, waterproof冲刷 protection for templates, no residue; waterproof and rust-proof.

2. Excellent isolation performance, resulting in clean, smooth, and uncontaminated concrete surfaces.

3. Easy demolding. After demolding, the surface remains smooth and even, with neat edges and no damage.

The basic formulation of precast form release agent typically includes the following main components:

Base materials: such as paraffin, stearic acid, vegetable oil, emulsified wax liquid, methyl silicone oil emulsion, modified silicone oil emulsion, etc.

Emulsifier: Used to evenly disperse the base materials in water, forming a stable emulsion.

Water: Serves as the carrier, usually constituting the majority of the formulation.

Additives: Such as preservatives, mildew inhibitors, etc., used to improve the stability and service life of the precast form release agent.

Specific Formulation Example:

Paraffin, stearic acid, vegetable oil, co-emulsifier, potassium hydroxide, etc.

Heat paraffin, stearic acid, co-emulsifier, and auxiliary oily raw materials to 60–80°C until melted. Then heat water, alkaline agents, and auxiliary aqueous raw materials to 80–90°C. Slowly add the aqueous phase to the oil phase under vigorous stirring, stir until room temperature, and obtain a white oil-in-water emulsion.

Polyurethane Precast Form Release Agent:

Formulation includes emulsified wax liquid 10%–15%, methyl silicone oil emulsion 15%–20%, modified silicone oil emulsion 5%–8%, deionized water 50%–55%, emulsifier 4.5%–6%, additives 0.5%–1%, preservative 0.3%–0.5%.

Functions and Characteristics of Components:

Base materials: Such as paraffin and silicone oil, primarily provide lubrication and demolding effects.

Emulsifier: Helps evenly disperse base materials in water, forming a stable emulsion.

Water: Acts as a diluent, reducing costs and facilitating easy cleaning.

Additives: Improve the stability and service life of the precast form release agent.

Characteristics: Precast form release agent features strong adhesion, no residue, waterproofing, rust resistance, and more.