Development Of Mine Used Carbon Fiber Composite PA6Impeller

The production of Coal mine excavate, aeration, power transmission or inspect usually faced with the explosive gas, coal dust environment. mine safety technology of mandatory standards demand the polymer production must have flame retarded and antistatic(electric conduction) in Our country. It should also be able to meet the requirements of the use of mechanical properties. Extracting fan plastic impeller used in coal mine、Mine rescue chamber ventilation impeller impeller material such as mine. have the characteristics of conductive. The ordinary glass fiber enhanced impeller material has brought new problems. The existing Impeller material is aselection of solid or liquid conductive functional additives.flame retardant used together. There are often against the weakening effect of conductive and flame retardant. It is difficult to reach the surface resistivity of less than106of the minimum requirement. Even a serious reduction of material mechanical propertier.Carbon fibers have high tensile strength, modulus, and has excellent conductivity. Widely application in many high technology fields. but with the application of safety products rarely reported in underground coal mine. Application of domestic high strength carbon fiber, with bromnated flame retardant system. Preparation of carbon fibers by melt granulation extrudingprocess of PA Composites. By adding silane coupling agent KH550, and optimization of screw thread combination, to enhance the binding capacity of carbon fiber with resin and fiber length control. The surface resistivity of carbon fiber composite materials was significantly lower. Up to103Ω orders of magnitude. To avoid Ordinary materials’surface resistivity to less106Ω. At the same time, the tensile strength of carbon fiber composite material is more than100MPa, full meet the minimum requirements for the impeller is greater than60MPa.This paper studies the process of carbon fiber composite material injection molded products of mine impeller. Verify that the barrel temperature of250℃compared with, At230℃of impeller finish better, more not easy to appear black shot mark. At the same time, the tensile stress of9900N impeller, the temperature of250℃impeller under tensile stress8000N better, Using the method of orthogonal experiment, effects of injection pressure, molding speed and melt pressure, affect the appearance, speed and holding pressure on the product and the warping of. Confirm the molding process conditions suitable. In accordance with the provisions of the enterprise standard,The performance of the molding impeller overspeed, impact resistance, tensile strength and thermal stability for verification, confirmation. confirmation In comparison with ordinary nylon impeller, carbon fiber composite impeller at a temperature of80℃, environment humidity of90%, to maintain a continuous28days thermal stability test can reach the standard requirements of strength. While the ordinary nylon material impeller serious deformation. This is to safeguard the security environment of underground coal mine, the miner’s life has an important role to guarantee.