Explosion-proof board is a refractory and explosion-proof material made of reinforced fiber cement board as the base material, with a surface composite of galvanized steel. It belongs to industrial protective materials and is mainly used in explosion-hazardous areas in the chemical, power, pharmaceutical, and other fields. It is suitable for use in explosion-proof partitions, ceilings, smoke exhaust ducts, and steel structure protection systems [1]. Its standard specification is 1200×2400mm, with a common thickness of 9.5mm. It adopts a sandwich composite structure, with the surface galvanized steel plate featuring a hole design to enhance bonding strength, and the interlayer fiber cement board can withstand high temperature and high pressure.

This product boasts core performance characteristics such as fire resistance (with a limit of up to 4 hours), explosion resistance, and impact resistance. Additionally, it possesses moisture resistance, lightweight, and sound absorption capabilities. During construction, it is fixed using a steel joist framework, laid with staggered joints, and installed with self-tapping screws, complemented by rock wool filling to enhance structural stability. The product has passed multiple explosion resistance, combustion, and impact tests, meeting Class A fire protection standards. It can be customized for use in explosion protection projects in hazardous goods warehouses, laboratories, transportation tunnels, and other scenarios

Structural and material explosion-proof boards (also known as blast-resistant boards or explosion-proof pressure relief boards) are a type of building protective panel specifically designed for areas with potential explosion hazards. Their core structure typically adopts a sandwich-like composite construction [4], combining high strength with fire resistance and blast resistance.

The mainstream explosion-proof board adopts a composite structure: the upper and lower layers are punched 0.5mm thick galvanized steel plates, and the middle layer is 8.5mm or 9.5mm thick fiber-reinforced cement board (or reinforced fiber cement board) [4]. The perforated design helps to enhance the composite strength between the steel plate and the cement board, and facilitates water evaporation.

Its base material primarily consists of siliceous materials, calcareous materials, and reinforcing fibers, and is produced through processes such as pulping, molding, autoclaving, drying, and sanding. A common product specification is 1200mm*2400mm with a thickness of 9.5mm. Taking this specification as an example, the weight of a fiber cement composite steel plate of this thickness is approximately 22 kilograms per square meter.

With technological advancements, new composite materials are continuously emerging, such as nano-ceramic coated plates and carbon fiber-metal laminated structures.

Explosion-proof panels are widely used in high-risk industrial fields, such as petrochemicals, nuclear power, military, offshore oil platforms, power transformer rooms, pharmaceuticals, warehousing, and energy ; public and transportation facilities, such as commercial buildings, airports, railways, subways, and highway tunnels; as well as specific parts of buildings, such as production workshops, warehouses, pump rooms, skirt explosion-resistant walls, lightweight explosion venting walls/roofs, explosion-proof ceilings, cable conduit protection, and equipment enclosures.