Special Material for Coal Mining Pipe
Special purpose material for production of HDPE coal mine pipe
Product introduction
It is a new-type product which is developed and produced with various functional additives added into the polyethylene resin through adopting new process and new formula. The material not only possesses excellent physical & mechanical property, but also possesses excellent flame resistant & antistatic properties and good processing property. Coal mining pipes manufactured with the material have good property of smooth inner and outer surface. The material widely applies to the production of pipes used for underground coal mine use water drainage, air supply, guniting and gas drainage, etc. Technical index of the material conforms to MT558.1-2005.
Technique Data
Item Name | Unit | Index | Typical Value |
Melt flow rate (MFR) | g/10min | 0.2-1.0 | 0.3 |
Tensile strength | Mpa | ≥12 | 19 |
Elongation at break | % | ≥450 | 650 |
Density | g/cm33 | ≤1.15 | 1.06 |
Oxygen index | % | ≥24.5 | 30 |
surface resistance | ΩΩΩ | ≤1×106 | 1×104 |
Oxidative induction time(OIT) | min | ≥40 | 60 |
Process technique
Processing temperature of the special purpose material for plastic coal mining pipe is generally kept between 150-180°C. Pipes manufactured with the material possess fine appearance, good physical property and excellent flame resistant & antistatic properties.
Storage, packaging and transportation
The material is particle resins and generally packed in 25kg standard bags. In order to ensure the material finally possess excellent combination properties, it should be stored in clean places and impurity shall be avoided during transportation.
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Special Material for Coal Mining Pipe