Vermiculite Insulation Board

Product Introduction：
Vermiculite Insulation board, commonly known as insulation board or refractory board, is a new type of insulation material. It is a board made of expanded vermiculite and a certain amount of adhesive, which is hot pressed or cold pressed.
 
Product Highlights:
- High temperature resistance, excellent fire resistance
- Perfect sound insulation performance
- Environmental protection, even heating up to 1200 ℃ does not produce harmful gases to human health

-Application:
Vermiculite insulation board is widely used abroad in fields such as construction, shipbuilding, metallurgy, power, aerospace, etc.

Technical Data:
 

Item	Index
Length & width	1200×1000 mm
Thickness	10-50mm
Density	350kg/m³-1250kg/m³

 
 

Specifications		VM-450		VM-550		VM-1100		VM-1250
Features		Index	Unit	Index	Unit	Index	Unit	Index	Unit
Maximum service temperature		1100	°C	1100	°C	1100	°C	1100	°C
Bulk density		450	Kg/m3	550	Kg/m3	1100	Kg/m3	1250	Kg/m3
Cold crushing strength		2.5	MPa	3.5	MPa	8.5	MPa	8.5	MPa
Modulus of rupture		0.3	MPa	1.2	MPa	2.5	MPa	2.5	MPa
Linear reheat shrinkage after 12 hours at 1000°℃		1.0	%	1.0	%	1.5	%	1.5	%
Total porosity		80	%	76	%	53	%	55	%
Coefficient of reversible thermal expansion at 20°℃ to 750°℃		11	X10-6K-1	11	X10-6K-1	10	X10-6K-1	10	X10-6K-1
Resistance to thermal shock		>30	Cycles	>30	Cycles	>30	Cycles	>30	Cycles
Thermal conductivity	Mean temperature
	200℃	0.10	W/(m×K)	0.10	W/(m×K)	0.09	W/(m×K)	0.08	W/(m×K)
	400℃	0.11	W/(m×K)	0.12	W/(m×K)	0.15	W/(m×K)	0.14	W/(m×K)
	600℃	0.13	W/(m×K)	0.13	W/(m×K)	0.19	W/(m×K)	0.18	W/(m×K)
	800℃	0.16	W/(m×K)	0.17	W/(m×K)	0.21	W/(m×K)	0.20	W/(m×K)
Chemical		Index	Unit	Index	Unit	Index	Unit	Index	Unit
SiO2		51	%	49	%	50	%	52	%
TiO2		1.6	%	1.7	%	2.5	%	1.6	%
Fe2O3		3.6	%	3.6	%	4.7	%	3.6	%
Al2O3		24	%	26	%	23	%	23	%
MgO		8.9	%	8.8	%	8.9	%	8.9	%
CaO		1.5	%	1.5	%	1.5	%	1.5	%
Na2O		0.2	%	0.2	%	0.2	%	0.2	%
K20		5.6	%	5.6	%	5.6	%	5.6	%
LOI  at 1,025℃		6.0	%	4.0	%	3.0	%	2.8	%