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When a fire alarm sounds, ordinary materials may instantly become accelerants, but one type of board can transform into a "fire-fighting hero"-fire-retardant plywood! With its outstanding flame-retardant properties, it has successfully risen to the top of the building materials industry, becoming a guardian of life and property. Behind ensuring the safety performance of fire-retardant plywood, the national standard GB/T 18101-2024 "Fire-retardant Plywood" plays a crucial role. As an industry leader, TBB (Tubao.com) participated in the formulation of this standard, leveraging its years of professional experience and technological expertise. This standard is not only a "measuring stick" for the quality of fire-retardant plywood but also embodies TBB's unwavering pursuit of safety.
Chapter 01
Combustion performance
A comparison of the "fire resistance levels" in the materials industry
In the world of building materials, fire resistance determines status! National standards classify materials into four levels:
| grade | name | Skill characteristics | Risk Index |
|---|---|---|---|
| Grade A | non-combustible materials |
The flame couldn't burn it at all, there was no open flame. |
★ |
| B1 level | Flame-retardant materials |
It has its own "fireproof barrier," slows the spread of fire, and extinguishes it once the fire is withdrawn.
|
★★ |
| B2 level | combustible materials |
It ignites immediately upon contact with fire and can easily fan the flames. |
★★★ |
| B3 level | Flammable materials |
It ignites easily and can be considered a fire accelerator. |
★★★★ |
Among these, fire-retardant plywood that achieves a B1 rating is the most noteworthy! It must meet two crucial indicators: a fire growth rate index (FIGRA) of 0.4 MJ ≤ 250 W/s and a total heat release (THR) of 600 seconds ≤ 15 MJ. Simply put, it ignites slowly and releases less heat, buying precious time for escape!
Chapter 02
Smoke production characteristics
Fire Smoke Maker Classification
Did you know? 80% of fire-related injuries and deaths are caused by smoke! Based on their smoke-producing capacity, materials are further divided into three levels:
| grade | Require | explain | |
|---|---|---|---|
| S1 level |
Flue gas formation rate index (SMOGRA) ≤ 30 m²/s²
|
The rate of smoke generation is low, and the total amount of smoke generated is also relatively low, so it hardly affects visibility. |
|
|
The total flue gas generation (TSP) over 600 seconds was ≤50 m².
|
|||
|
S2 level |
Flue gas formation rate index (SMOGRA) ≤ 180 m²/s²
|
The amount of smoke is moderate and will cause slight visual interference. |
|
|
The total flue gas generation (TSP) over 600 seconds was ≤200 m². |
|||
| S3 level |
S2 not reached |
Smoke instantly filled the air, with a high rate of smoke generation and a high total amount of smoke produced, turning the scene into a chaotic maze where you couldn't see your hand in front of your face. |
|
S1 grade fire-retardant plywood acts like a "smoke insulator," ensuring that escape routes remain clear during a fire.
Chapter 03
Toxicity of smoke
The Invisible "Deadly Killer"
More terrifying than the smoke itself are the "poisonous assassins" lurking within it! The toxicity of smoke can be categorized into three main groups:
| grade | Require | explain |
|---|---|---|
| t0 |
Reaching Level 1 Safety (ZA1) |
The smoke has relatively low toxicity and poses little threat to human health. |
| t1 | Reaching Level 3 (ZA3) of Quasi-Safety |
The flue gas may contain a certain amount of toxic components, but it has not reached a highly dangerous level.
|
| t2 |
Not up to Level 3 (ZA3) safety threshold |
The flue gas may contain a large number of toxic components, posing a serious threat to human health. |
In the life-or-death race against time during a fire, choosing the right materials is like adding armor to your defenses! TBB's fire-retardant plywood has successfully defied the odds thanks to its cutting-edge technology! It employs a dual flame-retardant process of "impregnation + adhesive layer," allowing the flame retardant to penetrate into the pores of the wood. After authoritative testing, TBB's fire-retardant plywood has directly obtained three major certifications:
Combustion performance: B1 grade
Smoke production characteristics: S1 level
Smoke toxicity: t1 level
Whether for home renovations or commercial spaces, choosing this is like getting insurance for your safety!
After reading this, are you still hesitant about choosing fire-resistant materials? Remember: in the face of a fire, a difference of 0.1 seconds can determine life or death! Choosing fire-retardant plywood that meets the GB/T 18101-2024 standard, especially all-rounders like TBB, is the most robust protection for life!