Polyurethane Foam Filling Piece for Hydraulic Support

Features:

Polyurethane foaming filling piece can prevent materials such as coal, coal gangue falling into the needling of hydraulic support’s big pillar, ensuring normal raise and fall and swing the hydraulic support, helping normal repair and maintenance of hydraulic support, and plays a good role to ensure coal mine safety, high production and efficiency.

The product has good flexibility, surface strength and impact toughness, with direct molding and on-site installation available.

The core layer has good toughness and excellent compression deformation performance, guarantee the pillar swing easily, and can restore elastic deformation in time. The core heart’s average density: 0.*5 g/cm3, tensile strength: **0 KPa, elongation: **5%, 4% compression strength value: *8 KPa, compression deformation: 8% or less.

Good impact resistances, high tear strength, and good elasticity. The crust is about 1.**2 mm thick, under which is porous structure. Crust density is 1.**1.2 g/cm3, whose mechanical energy is equal to olefin plastic cortex, and puncture resistance better than same-type plastic products. The tensile strength of crust: ***0 KPa, breakage elongation: **0%, tear strength: 5.2 kN/m.