Overview
TuoZhen Cable Fireproof Coating is an advanced intumescent material engineered to protect electrical cables from fire damage. When exposed to high temperatures, it swells to form a thick, insulating char layer that shields cables from flames and heat, maintaining circuit integrity for critical evacuation and emergency systems. The coating is widely recognized in Asia for compliance with GB 28374-2012 and other international fire safety standards. Developed for both new installations and retrofits, it is suitable for diverse environments including high-rise buildings, industrial complexes, and underground transit systems. Its formulation balances fire resistance with minimal smoke emission, addressing both safety and environmental concerns.
Physical and Chemical Properties
The coating typically appears as a viscous liquid or paste, with water-based or solvent-based variants offering different application advantages. Key technical parameters include a density range of 1.2–1.5 g/cm³ and a char expansion ratio of 10–30 times its original thickness when exposed to temperatures above 200°C. Chemically, it contains a synergistic blend of flame retardants (e.g., ammonium polyphosphate), carbonizing agents, and binding resins. This composition ensures stable performance under humidity (up to 95% RH) and resists corrosion to underlying cables. The cured coating exhibits strong adhesion to PVC, XLPE, and other common cable sheathing materials.
Main Applications
Primary use cases include fire protection for power and communication cables in commercial buildings (e.g., data centers, hospitals), transportation hubs (airports, subway tunnels), and energy facilities (oil refineries, nuclear plants). It is particularly critical for vertical cable runs where flame spread risk is highest. The coating is also specified for offshore platforms and ships due to its resistance to salt spray. In retrofit projects, it provides a cost-effective alternative to full cable replacement while upgrading fire safety. Some formulations are rated for up to 3 hours of fire resistance, exceeding minimum regulatory requirements in most jurisdictions.
Safety and Storage
While non-hazardous after curing, uncured material requires standard chemical handling precautions: use nitrile gloves, goggles, and ensure adequate ventilation during application. Spills should be contained and cleaned with absorbent materials. Storage life is typically 12 months in unopened containers at room temperature (5–35°C). Freezing can irreversibly damage water-based formulations. Bulk procurement should coordinate with project timelines to avoid extended storage. Disposal follows local regulations for polymer-containing materials, with incineration only in approved facilities.
B2B Procurement Guide
When sourcing, verify third-party test reports for relevant standards (e.g., UL 94, BS 476). Large-scale projects should request batch testing certificates. Key procurement metrics include coverage rate (typically 1–1.5 kg/m² per layer) and drying time (2–8 hours depending on humidity). For international buyers, confirm whether the supplier provides documentation in English and supports LC payment terms. MOQs usually start at 200 kg, with bulk discounts available above 5 tons. Lead times vary from 7–30 days depending on customization needs (e.g., color matching for aesthetic requirements in visible installations).
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