The underground working environment of coal mines is harsh and complicated. Long-standing difficulties for underground operation and maintenance include coal bunker blockage, material wall adhesion, equipment abrasion as well as potential fire safety hazards. Conventional steel liner plates suffer from poor wear resistance, frequent coal accumulation and caking, and lack flame-retardant and anti-static capabilities, making them unsuitable for high-risk underground working conditions with gas and coal dust.

Flame-retardant and anti-static liner plates for underground coal mines feature self-extinguishing performance once the flame is removed and prevent coal adhesion and blockage inside coal bunkers. Relying on excellent modified material properties, they effectively address various pain points in underground coal bunker operation and maintenance, and are applicable to all types of underground coal storage and conveying equipment.

Manufactured with ultra-high molecular weight polyethylene (UHMWPE) as the base material and an eco-friendly dual-modification formula, flame-retardant and anti-static liner plates boast core dual safety performance of flame retardancy and static resistance. Open-flame torch tests verify that the plates suppress combustion rapidly when exposed to fire and self-extinguish immediately after the flame source is removed, without molten dripping or sustained combustion. This greatly mitigates fire risks triggered by underground coal dust and gas, fully complying with safety operation codes for underground coal mines. Meanwhile, the plates steadily conduct static electricity away to prevent static accumulation and spark generation, eliminating potential explosion dangers.

In terms of practical performance, flame-retardant and anti-static liner plates possess outstanding self-lubricating properties with ultra-smooth non-stick surfaces. They fundamentally resolve the problems of wet coal adhesion, caking and wall sticking, drastically reducing frequent coal bunker blockages and manual bunker-cleaning work, as well as lowering safety risks in maintenance. Furthermore, the plates deliver exceptional wear and corrosion resistance. They withstand long-term scouring and abrasion from coal, resist damp underground conditions and acid-alkali corrosion, and achieve a far longer service life than traditional steel plates.

This article is compiled and sorted out by Henan Jinhang Engineering Plastics Co., Ltd. (www.upeplastic.cn), Editor-in-Charge: Jinhang. The company specializes in the R&D and production of flame-retardant and anti-static liner plates. Reproduction is permitted with clear source attribution.