Graphite Polystyrene Board

1200 (length) * 600 (width) * thickness (3CM-30CM)
20kg-25kg/m³
Graphite polystyrene (SEPS) board, the full name is graphite molded polystyrene foam board for insulation, commonly known as "black foam" or "blackboard", referred to as SEPS. It is a new type of polystyrene insulation board and a highly flame-retardant polystyrene insulation material developed by BASF of Germany. Its production process is to add 5%-50% by mass of expanded graphite and 2%-20% of phosphoric acid compounds as flame retardants to expandable polystyrene (EPS), and prepare expanded PS particles by suspension polymerization. Graphite is introduced into expandable polystyrene (EPS) to make it have better flame retardant properties while maintaining excellent thermal insulation properties. At present, the country is promoting the introduction of national standards for SEPS boards, which will be extremely beneficial to the market promotion of highly flame-retardant SEPS insulation boards.

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Graphite polystyrene board solves the key flame retardant problem, and the thermal insulation performance is greatly improved: the problem that ordinary polystyrene board has always been criticized is poor fire resistance and poor thermal insulation performance. But because of its low price, it has always been favored by the market. Graphite polystyrene board solves the problems of fire resistance and poor thermal insulation performance of ordinary polystyrene board, but the price is basically the same as that of ordinary polystyrene board. Therefore, the future market prospects are bright. The main raw material of graphite polystyrene board is also styrene. Graphite polystyrene board is expected to compete and replace polyurethane insulation board in the mid-to-high-end market, and it can be considered that it is expected to bring incremental demand for styrene.
Material advantages Material Disadvantages Price Analysis Thermal conductivity (W/m.k) Polystyrene foam board EPS (70mm) The production process is mature, the raw material styrene is easily available and the price is low Poor fireproof performance, low strength, easy to deform, poor thermal insulation B1 grade 26 yuan/m², system cost 86 yuan/m²; B2 grade polystyrene board 22 yuan/cubic meter, system cost 80 yuan/m² 0.028-0.041, medium thermal conductivity Extruded polystyrene board XPS (60mm) Mature technology, high compression resistance, better thermal insulation than EPS Poor flame retardant effect, slow curing, poor dimensional stability B1 grade extruded board 54 yuan/m², system cost 125 yuan/m²; B2 grade extruded board 38 yuan/m², system cost 98 yuan/m Graphite polystyrene board SEPS (50mm) The thermal insulation capacity is at least 30% higher than that of ordinary EPS, and the fire resistance reaches the flame-retardant Bl level. With the same thermal insulation effect, the cost is lower than EPS. The compressive strength is lower than that of XPS board, and compressive strength is not the main evaluation index of thermal insulation materials. 25 yuan/m², system cost 85 yuan/m² (Note: Currently, graphite polystyrene boards are rarely used in China, and the system cost is an estimated data) ≤0.032, low thermal conductivity Rock wool (90mm) Good fire resistance, no burning Poor insulation effect, high energy consumption in raw material production, and high pollution 135-180/m², system cost is 180-190 yuan/m² 0.065-0.090, high thermal conductivity Polyurethane sheet (40mm) Good thermal insulation performance and good stability The price is higher than EPS, the domestic start is late, and the current output is small B1 grade board 70 yuan/m², system cost 160 yuan/m²; B2 grade board 60 yuan/m², system cost 130 yuan/m² 0.017-0.025, the thermal conductivity is the lowest among all organic and inorganic insulation materials Polyurethane spray (40mm) Thin thickness, low thermal conductivity, strong adhesion to the wall The price is higher than EPS, the domestic start is late, the spraying material is easy to disperse, and it is not suitable for the renovation of existing buildings. B1 spraying 62/m², system cost 155-165 yuan/m²; B2 spraying 44 yuan/m², system cost 125-130 yuan/m² Phenolic foam board (50mm) Good fire resistance, corrosion resistance, good thermal insulation effect Easy to break, easy to fall off, release formaldehyde, high price The material cost is high, the system cost is 160 yuan / m² 0.02-0.029, thermal conductivity is very low, close to polyurethane

	Material advantages	Material Disadvantages	Price Analysis	Thermal conductivity (W/m.k)
Polystyrene foam board EPS (70mm)	The production process is mature, the raw material styrene is easily available and the price is low	Poor fireproof performance, low strength, easy to deform, poor thermal insulation	B1 grade 26 yuan/m², system cost 86 yuan/m²; B2 grade polystyrene board 22 yuan/cubic meter, system cost 80 yuan/m²	0.028-0.041, medium thermal conductivity
Extruded polystyrene board XPS (60mm)	Mature technology, high compression resistance, better thermal insulation than EPS	Poor flame retardant effect, slow curing, poor dimensional stability	B1 grade extruded board 54 yuan/m², system cost 125 yuan/m²; B2 grade extruded board 38 yuan/m², system cost 98 yuan/m	0.028-0.041, medium thermal conductivity
Graphite polystyrene board SEPS (50mm)	The thermal insulation capacity is at least 30% higher than that of ordinary EPS, and the fire resistance reaches the flame-retardant Bl level. With the same thermal insulation effect, the cost is lower than EPS.	The compressive strength is lower than that of XPS board, and compressive strength is not the main evaluation index of thermal insulation materials.	25 yuan/m², system cost 85 yuan/m² (Note: Currently, graphite polystyrene boards are rarely used in China, and the system cost is an estimated data)	≤0.032, low thermal conductivity
Rock wool (90mm)	Good fire resistance, no burning	Poor insulation effect, high energy consumption in raw material production, and high pollution	135-180/m², system cost is 180-190 yuan/m²	0.065-0.090, high thermal conductivity
Polyurethane sheet (40mm)	Good thermal insulation performance and good stability	The price is higher than EPS, the domestic start is late, and the current output is small	B1 grade board 70 yuan/m², system cost 160 yuan/m²; B2 grade board 60 yuan/m², system cost 130 yuan/m²	0.017-0.025, the thermal conductivity is the lowest among all organic and inorganic insulation materials
Polyurethane spray (40mm)	Thin thickness, low thermal conductivity, strong adhesion to the wall	The price is higher than EPS, the domestic start is late, the spraying material is easy to disperse, and it is not suitable for the renovation of existing buildings.	B1 spraying 62/m², system cost 155-165 yuan/m²; B2 spraying 44 yuan/m², system cost 125-130 yuan/m²
Phenolic foam board (50mm)	Good fire resistance, corrosion resistance, good thermal insulation effect	Easy to break, easy to fall off, release formaldehyde, high price	The material cost is high, the system cost is 160 yuan / m²	0.02-0.029, thermal conductivity is very low, close to polyurethane