The invention discloses a three-layer co-
extrusion PVC-M tubular product for
coal mine, characterized in that the tubular product comprises an antistatic inner layer, an antistatic outer layer and a PVC-M interlayer, wherein the antistatic inner and outer layer compositions comprise the following ingredients: 100 weight parts of PVC resin, 0.8-1.2 weight parts of heat stabilizer, 4-8 weight parts of
toughening agent, 1.3-2.0 weight parts of lubricating agent, 5-10 weight parts of flow modifier, and 6 weight parts of nano conductive
carbon black; the PVC-M interlayer composition comprises the following ingredients: 100 weight parts of PVC resin, 1.0-1.5 weight parts of heat stabilizer, 10-15 weight parts of
toughening agent, 2.1-3.5 weight parts of lubricating agent, and 0-5 weight parts of filling agent. According to the invention, the composition of the tubular product has high strength, the
shock resistance of the tubular product can be comparable to that of
polyethylene antistatic tubular products for
coal mine, the modulus reaches to 2231MPa, the tensile strength reaches to 46.3Mpa, the
impact strength of the simple-supported beam reaches to 97.6Mpa, the
mechanical property shows
toughness and balance and permanent antistatic property, thus the requirements of the tubular product for
coal mine are satisfied.