根據巖棉板密度、厚度以及使用環境的不同而有所變化。以下是一些具體信息：

　　It varies depending on the density, thickness, and usage environment of the rock wool board. Here are some specific information:

　　一般耐火極限 ：

　　General fire resistance limit:

　　巖棉板的耐火極限通常在1-2小時之間。板材越厚、密度越高，其耐火性能越好。

　　The fire resistance limit of rock wool board is usually between 1-2 hours. The thicker and denser the board, the better its fire resistance performance.

　　影響因素 ：

　　Influencing factors:

　　巖棉板的耐火極限還受到火災等級的影響。在火災等級較低的情況下，耐火極限時間會相應延長。

　　The fire resistance limit of rock wool board is also affected by the fire level. In cases of low fire severity, the fire resistance limit time will be correspondingly extended.

　　表面涂層也會影響巖棉板的耐火性能。如果表面涂有防火涂料或涂料，可以進一步提高其耐火性能。

　　The surface coating can also affect the fire resistance of rock wool board. If the surface is coated with fireproof paint or coating, its fire resistance performance can be further improved.

　　具體范圍 ：

　　Specific scope:

　　有些巖棉板的耐火極限在1.5-3小時之間，防火性能較好的巖棉板甚至可以達到5小時。

　　The fire resistance limit of some rock wool boards is between 1.5-3 hours, and rock wool boards with better fire resistance can even reach 5 hours.

　　然而，也有巖棉板的耐火極限時間較短，可能只有1小時左右。

　　However, there are also rock wool boards with a shorter fire resistance limit time, possibly only about 1 hour.

　　使用建議 ：

　　Usage suggestion:

　　在選擇巖棉板時，應綜合考慮其耐火極限時間以及其他性能指標，以確保滿足實際需求。

　　When choosing rock wool board, its fire resistance limit time and other performance indicators should be comprehensively considered to ensure that it meets actual needs.

　　使用過程中，應按照相關規定進行安裝和使用，以保障其安全性能和耐久性。

　　During use, installation and use should be carried out in accordance with relevant regulations to ensure its safety performance and durability.

　　綜上所述，巖棉板的耐火極限在1-5小時之間，具體取決于其密度、厚度、表面涂層以及使用環境。在選擇和使用巖棉板時，應選擇質量可靠的產品，并嚴格按照規定進行安裝和使用，以確保其防火性能和安全性能。

　　In summary, the fire resistance limit of rock wool board is between 1-5 hours, depending on its density, thickness, surface coating, and usage environment. When selecting and using rock wool board, reliable products should be chosen, and installation and use should be strictly carried out in accordance with regulations to ensure its fire resistance and safety performance.

　　本文由濟南巖棉板為您提供，我們的網站是：http://www.km6lz.com我們將以全心全意的熱情為您提供服務，歡迎您的訪問！

　　This article is provided by Jinan rock wool board for you. Our website is: http://www.km6lz.com We will provide you with wholehearted enthusiasm and welcome your visit!