1. Feature
Perlite fire door core is consisting of expanded perlite and inorganic glue. With the chatacters of light(kow bulk density), high hydrophobe rate , high strength, low thermal conductivity and easy-to use, Hydrophobel perlite board/ tiles are widely used in roof, wall, barns  as core of wooden fire door and steel fire door.

2. Main performance

1) Thermal conductivity: 0.03 ~ 0.076 W/(m.k)   

2) Temperature-resistance : 1300 () 
3) Compressive strength: 0.35-0.8(Mpa)                 

3) Sound-absorption coefficient: 0.03-0.8
4) Density: 200 ~ 300 (kg/m3)                        

5) Wet expansion rate(% )≤0.25

6) Wet expansion rate(%) ≤0.25                         

7) Anti- bend intensity ≥8Mpa