GB12441-2018

Finishing fire resistant coating

饰面型防火涂料

GB 12441-2018 es una norma nacional china obligatoria vigente: Finishing fire resistant coating. Sector: Química. Enfoque: Seguridad de productos. Entrada en vigor: 1 sept 2018.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to all types of finishing fire resistant coatings used on combustible substrates such as wood, fiberboard, and paperboard. It covers coatings that provide decorative finishes and expand to form an insulating layer when exposed to fire. Manufacturers of both water-based and solvent-based fireproof coatings must comply with this standard. It is not applicable to structural fireproofing materials or intumescent coatings for steel.

Requisitos técnicos

GB 12441-2018 specifies comprehensive technical requirements for finishing fire resistant coatings, categorized into physical, chemical, and fire performance parameters. The standard mandates specific limits for in-container state, fineness, drying time, adhesion, flexibility, and impact resistance. Additionally, it sets strict criteria for water resistance and moisture and heat resistance to ensure durability in various environmental conditions. The core fire performance requirements include fire resistance time, difficult flammability, mass loss, and char volume. These parameters are critical for evaluating the coating's ability to protect combustible substrates. Compliance with the mandatory clauses regarding technical specifications and inspection rules is essential for market access. The standard also classifies products by dispersion medium into water-based (S) and solvent-based (R) types, each with specific packaging and storage requirements. GB/T 9750 is referenced for packaging marks, ensuring proper identification and safe transportation.

Métodos de ensayo

The standard outlines specific testing methodologies to verify compliance. Physical and chemical properties are tested using methods referenced from GB/T 1720, GB/T 1728, and GB/T 1731, among others. Fire performance is evaluated using the large board burning method (Appendix A) to determine fire resistance time, and the small chamber burning method (Appendix B) to measure mass loss and char volume. Furthermore, the difficult flammability test is conducted according to GB/T 8625. Manufacturers must ensure their products undergo these rigorous tests to meet the mandatory inspection rules.

Preguntas frecuentes

What products are regulated under GB 12441-2018?

GB 12441-2018 regulates finishing fire resistant coatings applied to combustible substrates like wood and fiberboard. This includes both water-based and solvent-based coatings that expand to form an insulating layer when exposed to fire.

Are there any mandatory clauses in GB 12441-2018?

Yes, clauses 5.2 (technical requirements), 8.1 (marking), and Chapter 7 (inspection rules) are mandatory. Compliance with these sections is legally required for products sold in the Chinese market.

How does GB 12441-2018 differ from the 2005 version?

The 2018 version introduces product classification and model numbering. It also modifies some physical and chemical performance indicators, replaces the tunnel burning method with the difficult flammability test (referencing GB/T 8625), and updates the inspection rules.

The summary above provides a high-level overview of GB 12441-2018. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 12441-2018 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: C82
ICS: 13.220.20
Organismo competente: National Fire and Rescue Administration
Comité técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relaciones

Sustituye a:GB 12441-2005