What does flame retardant cold bending on PVC electrical pipes mean?

"Flame retardant cold bending" on PVC electrical pipes: dual performance to protect the safety of electricity In the electrical wiring of home decoration and construction projects, PVC electrical pipes are the "safety guardians" hidden under the wall and ground. It not only bears the basic function of protecting wires and cables, but also the technical parameters such as "flame retardant cold bending" marked on its surface imply the core performance of electricity safety and construction convenience. This article will disassemble the deep meaning of these two keywords from the perspective of technical principles and practical applications. 1. "Flame retardant": self-extinguishing in 30 seconds to build a fire defense line "Flame retardant" is the core safety attribute of PVC electrical pipes. Its technical standards are derived from the mandatory requirements of the state for plastic pipes for construction (such as GB/T 14823.2 "Conduit for electrical installation, special requirements"). In layman's terms, "self-extinguishing within 30 seconds of leaving the fire" is a visual description of the flame retardant performance: when the pipe is burned by an open flame, the flame will self-extinguish within 30 seconds, and will not produce continuous combustion or dripping flammable molten droplets, thereby inhibiting the spread of the fire.

The realization of this performance depends on the flame retardant added to the pipe formula (such as aluminum hydroxide, antimony trioxide, etc.). These components interrupt the combustion chain reaction through multiple mechanisms such as heat absorption and cooling, oxygen isolation, and suppression of combustible gas generation. For example, when the flame touches the surface of the pipe, the flame retardant will promote the rapid carbonization of the material surface, forming a dense thermal insulation layer and preventing the flame from penetrating into the inner layer.

In practical applications, flame retardant performance is particularly important: whether it is a hidden pipe hidden in the wall in a home decoration or a complex wiring scene in a commercial building, once the wire sparks due to short circuit, overload, etc., the flame retardant pipe can effectively delay the spread of the fire and buy precious time for personnel evacuation and fire rescue. Especially in fire-prone areas such as ceilings and kitchens, choosing an electrical pipe with a flame retardant grade that meets the standard is equivalent to installing a "firewall" for electricity safety. 2. "Cold bending": operating at room temperature, remodeling the convenience of construction "Cold bending" refers to the characteristics of PVC electrical pipes that do not need to be heated and can be bent directly into the required arc by special tools (such as pipe bending springs) at room temperature. Traditional pipes (such as metal pipes, ordinary plastic pipes) often need to be heated and softened or with the help of professional equipment when bending, and the cold bending performance of PVC electrical pipes completely simplifies the construction process: the construction staff only need to insert the spring into the part of the pipe that needs to be bent, and manually apply force to form a smooth arc. The bending angle can reach 90 or less, and there will be no wrinkles, cracks or pipe diameter narrowing inside the pipe.

The technical basis of this feature lies in the balance of flexibility and rigidity in the pipe formula. High-quality PVC electrical pipe by adding plasticizer, improve the molecular structure, so that the material at room temperature not only maintain enough rigidity to support the wire protection, but also have moderate elasticity, to ensure that the molecular chain is not destroyed when bending. At the same time, the cold bending process of the pipe impact resistance and compressive strength is not affected, after bending can still withstand long-term use of external pressure (such as wall settlement, weight compression). In-depth analysis of the core technology of AD PVC electrical pipe flame retardant cold bending: through the GB/T 14823.2 certified flame retardant formula to achieve 30 seconds from the fire self-extinguishing, using plasticized modification technology implementation of room temperature 90 bending construction. To understand the AD electrical pipe in the wall pre-embedded, ceiling wiring in the fire resistance and compression advantages, to obtain the construction technical specifications, please call 17399989993, Hubei area can make an appointment for engineering guidance.