Ultrahigh molecular weight ultrafine particle size polyethylene and its production method and application

摘要

The present invention relates to ultrahigh molecular weight ultrafine particle polyethylene and its production method and application. The polyethylene has a viscosity average molecular weight (Mv) exceeding 1 × 10 6, and the polyethylene is spherical or spherical, and the average particle size is 10 ˜100 μm, standard deviation is 2 μm-15 μm, and bulk density is 0.1 g / mL to 0.3 g / mL. Graft polyethylene can be produced by adopting the above polyethylene as a base polyethylene by a solid phase graft method; a glass fiber reinforced polyethylene composition comprising the polyethylene and glass fiber, and a sheet material or a tube produced therefrom are also obtained; Fibers and membranes can be made from soluble ultra high molecular weight ultra fine particle size polyethylene; and soluble ultra high molecular weight ultra fine particle size polyethylene. The above method can be industrialized due to simple steps, easy control, low cost, and high reproducibility. Since the polyethylene of the present invention has both an ultra high molecular weight and an ultra fine particle size range, it is particularly suitable for processing applications, and has greatly expanded the application field and application range of ultra high molecular weight polyethylene.