How to prevent moisture caused by steam penetration in cold storage projects

How to prevent moisture caused by steam penetration in cold storage projects

Under normal circumstances, excessive air humidity causes rapid growth of mold, moldy food, and corrosion of cold storage building materials. Therefore, the moisture-proof of cold storage projects is also particularly important. In order to prevent dampness caused by steam penetration, Hefei Cold Storage Equipment Co., Ltd., a common practice is to use both sides as a moisture-proof layer on the floor of the cold storage project. The more commonly used moisture-proof materials are as follows:

　　 One, asphalt

　　 has very good waterproof performance and adhesion, is one of the main waterproof materials in okmarts.com, two commonly used petroleum pitch and tar pitch.

　　1. Petroleum asphalt: light oil and heavy oil are distilled from petroleum, and the remaining gelatinous substance is soft asphalt. By blowing in air, the soft asphalt is oxidized and hardened to obtain petroleum asphalt. Asphalt becomes soft and sticky when exposed to heat, and becomes hard and brittle when exposed to cold

2. Tar pitch: it is a product obtained by decomposition and distillation of coal, wood, etc., also known as asphalt. It is generally a black solid at room temperature. It is brittle in winter and soft in summer. It has high water resistance and antimicrobial properties. It is often used Under construction.

　　 Two, linoleum

　　 Asphalt linoleum is made by impregnating base paper with low softening point petroleum pitch, then covering both sides of the oil paper with high softening point petroleum pitch and sprinkling with talc or mica flakes. The heavier the linoleum, the stronger its impermeability and the greater the tensile strength. Guangzhou Cold Storage Equipment Co., Ltd. uses petroleum pitch for pasting linoleum, not pitch martellite, which is prone to aging and has greater vapor permeability than petroleum pitch.

　　 Three, asphalt plastic waterproof material

　　 It is made by mixing tar pitch, polyvinyl chloride, talc, and dibutyl phthalate. This kind of coil has a high degree of impermeability, sufficient strength, strong ductility, heat resistance up to 150°C, not brittle and cracked at a temperature of -15°C to -20°C, and has high corrosion resistance , Is one of the new waterproof and moisture-proof materials.

　　 Four, plastic film

　　 Polyethylene film is better, with small specific gravity, non-toxicity, low air permeability and water absorption; mechanical properties, flexibility, impact resistance and cold resistance are all good, suitable for moisture and vapor barrier materials.