Polyurethane Foam Combined Polyether for Mining

Overview

This combined polyether is a fully formulated polyol component for rigid polyurethane foam used in coal mines and tunnels for reinforcing broken strata, sealing and filling voids, and stopping air or water leakage. It contains polyether polyols together with catalysts, foam stabilizers and blowing agents, and is foamed by mixing with polymeric MDI at the ratio given in the technical data sheet.

Also known as

Combined polyether; Polyol premix (polyol side of a two-component rigid foam system)

Specifications

Test items	Specifications
Appearance	Brown red transparent liquid
Viscosity (25℃) /mPa·s	200-350
Density (25℃) /(g/cm³)	1.04±0.20
Hydroxyl value /(mgKOH/g)	350±50
Water content /%	1.45-2.5

Applications

• Reinforcement of loose or fractured rock in mines and tunnels
• Sealing, plugging and void filling
• Air-leak and water-leak control

Packaging

220 kg/drum; 1000 kg/IBC.

Storage

Store sealed in a cool, dry and ventilated place at 15–25 ℃, away from heat and direct sunlight. Mix well before use.