High temperature calcium silicate core is a kind of inorganic material with stable physical and chemical performance. With the characteristics of high resistant temperature, low thermal conductivity, very good effect of insulation for fire and sound, lightweight and high specific strength. The core will never deformed and will not send out any irritant smoke and gas when burned and high temperature. Free from asbestos, is a pure green building material. So it’s very suitable for fireproof and sound insulation door. This kind of material had already widely used as the cores of fireproof and sound insulation doors in various field. The limited fire resistance is up to 90 min,even more than 120 min.This product have exported to USA, Canada and Japan, etc. And have already earned more honors from the customers.

Physical Performance	Unit	Core for steel door	Core for wood door
Bulk Density	Kg/m3	260 – 340	270 - 350
Flexural Strength	Mpa	≥0.6	≥0.7
Thermal Cond.	W/m.k	≤0.068	≤0.072
Temp. limited	℃	1250	1250
Linear Shrinkage (1000℃×3h)	%	≤2	≤2
Soundproof Coeffecient	db		≥30

Length × Width (mm)	1080x950   1060x930
Thickness (mm)	30 - 60
Tolerance (mm)	Length, width ±3, Thickness ±0.5

*According to the requirement of customer, we can make some special proceeding, such as making tenon and groove, joint together, etc.

*The high temperature adhesive for sticking core material & the high temperature glue for laminating core material with MDF, plywood and steel panel are also available here.