Performance Characteristics of Polyurethane Cable Trays

◆ High toughness and transverse strength. Without adding transverse felt or fiberglass cloth reinforcement, the transverse bending strength can still reach up to 100 MPa, far exceeding that of unsaturated resin systems (approximately 20 MPa);

◆ Weather resistance is superior to unsaturated resin systems;

◆ Polyurethane composite cable trays are made from raw materials consisting of two-component polyurethane and glass fiber. The production process involves closed feeding and thermosetting molding. The main material is a polyurethane pultrusion system developed by Bayer MaterialScience (China) Co., Ltd., which originates from Germany. This material does not contain styrene solvent (a toxic chemical), and no solvent volatilization or styrene emissions occur during production.

◆ The glass fiber content in polyurethane pultrusion can reach up to 83%. While achieving the same performance indicators, the thickness of the product is about half that of unsaturated resin systems;

◆ Polyurethane cable trays exhibit excellent tensile properties, impact resistance, and corrosion resistance. Compared to other resins such as unsaturated polyester and vinyl ester, polyurethane comprehensively enhances the physical properties of the product. The strength and stiffness of polyurethane are 2-5 times higher than those of unsaturated polyester resin;

◆ Polyurethane products possess outstanding toughness. Processed and punched edges show very few or even no microcracks. The surface is smooth and fine, with high rigidity and low porosity, which facilitates subsequent processing such as drilling, machining, and assembly. Compared to pultruded products made from unsaturated polyester, vinyl ester, and other resins, polyurethane pultrusion offers significant advantages in terms of on-site construction convenience and service life;

◆ The products offer advantages such as corrosion resistance, flame retardancy, insulation, lightweight, and more.

Application Areas of Polyurethane Cable Trays

Polyurethane composite cable trays are primarily used for the protection of power and communication cables during the construction of highways, ports, airports, and other engineering projects.