Polyolefin/halloysite nanotube composite master batch as well as preparation method and application thereof

The invention relates to a preparation method of a halloysite nanotube containing composite master batch, which comprises the steps of: adding a halloysite nanotube in a high-speed mixer or kneading machine, then adding a dispersing agent, a wetting agent, an antioxidant, a heat stabilizing agent, a coupling agent and polyolefine resin in sequence, mixing at high speed or kneading for 1-5min at a temperature of 160-210 DEG C; and 2, feeding a mixture into a double-screw extruder for extruding, chopping and drying to obtain the polyolefin/halloysite nanotube composite master batch, wherein the heating temperature of the dual-screw extruder is 180-240 DEG C. The method provided by the invention adopts a high-speed mixing and kneading method, and the coupling agent is added in the mixture and plays a compatibility action with other components to ensure that the halloysite nanotube is better dispersed in polyolefine; and the mechanical property of the polyolefine is improved. The polyolefine composite master batch prepared by using the method can be used as a low-cost composite master batch and used for plastic modification or fiber modification.