SXPS is a non-standard abbreviation of extruded polystyrene foam board (XPS). The general name of the industry is XPS insulation board, and its full name is "Extruded Polystyrene Foam Board". This material is a hard insulation board made of polystyrene resin as the main raw material, which is extruded and foamed at high temperature to form a closed cell honeycomb structure. It has excellent thermal insulation, compression resistance, moisture resistance, and durability, and is widely used in the fields of building energy conservation and industrial insulation.

Core performance parameters (according to the national standard GB/T 30595-2024)

|Performance indicators | Typical range | Standard basis|

|Thermal conductivity | 0.022-0.032 W/(m · K) | ≤ 0.030 W/(m · K) (with skin)|

|Compressive strength | 0.1-34 MPa | 150-700 kPa (conventional); The non removable template type can reach up to 34 MPa|

|Water absorption rate | ≤ 1.0% (v/v) | Closed cell structure achieves extremely low water absorption|

|Density | 28-55 kg/m ³ | High density type is used for heavy-duty scenarios (such as cold storage and roadbeds)|

|Combustion performance | B1 level (flame retardant) or A level (partially modified) | National standard B1 level is a mandatory requirement for building exterior walls; Sanyi New Materials and other manufacturers launch A-level fire-resistant products|

|Operating temperature | -50 ℃~70 ℃ (conventional); Partially up to 350 ℃ (composite type) | Cold storage specific type with low temperature resistance, non removable template type with high temperature resistance|

|Dimensional stability | No significant deformation after long-term use | Closed cell structure resistant to moisture and heat aging, with a lifespan of 30-50 years|

Note: "SXPS" is actually a misnomer in the market for "Graphite XPS". Adding graphite can further reduce the thermal conductivity to 0.022 W/(m · K) and improve insulation efficiency.

Typical application scenarios

Building exterior wall insulation: thin plastering system, integrated insulation and decoration board, suitable for residential and public construction projects, meeting energy-saving standards of over 65%.

Roof and underfloor heating system: High compression type is used for roof slope making, underfloor heating cushion layer, and to withstand pedestrian and furniture loads.

Cold storage and refrigerated transportation: Maintain structural stability at -50 ℃ low temperature environment, with moisture-proof performance to prevent frosting.

Transportation engineering: Permafrost isolation layer for highways, airport runways, and railway roadbeds to prevent pavement cracking caused by thermal expansion and contraction.

Non dismantling template integrated system: combined with concrete pouring, realizing the integration of "insulation+structure+fire prevention", and improving construction efficiency by more than 50%.

Note: The price is the market price of the single board, excluding transportation, installation, and auxiliary materials. Hebei, Shandong, and Jiangsu are industrial concentration areas, and local enterprises can provide rapid response services.

Key Tips for Construction and Selection

Prioritize the use of skin panels: enhance the adhesion between the skin and mortar to reduce the risk of hollowing.

Avoid contact with PVC: XPS may be corroded by certain solvents and needs to be isolated during construction.

Cold storage applications require a moisture-proof layer: even if XPS has a low water absorption rate, it is still recommended to add a vapor barrier film in long-term high humidity environments.

The non dismantling template requires structural calculation: products with compressive strength exceeding 100 MPa are suitable for load-bearing walls, not ordinary insulation layers.

Shandong Huaneng Insulation Materials Co., Ltd. is a pipeline insulation manufacturer in Linyi. As an integrated insulation and decoration manufacturer in Shandong, our main products include integrated insulation and decoration, pipeline insulation, exterior wall insulation materials, extruded polystyrene board, thermosetting polystyrene board, and rubber insulation. If you need it, you can contact us by phone.

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