White carbon black/bast fiber/polymer composite material with block structure

The invention provides a white carbon black/bast fiber/polymer composite material with a block structure. The composite material is prepared from the following raw materials in parts by weight: 100 parts of low-density polyethylene (LDPE), 10 parts of bast fibers, 5-20 parts of gaseous white carbon black and 0.5-2.0 parts of coating assistant. According to the white carbon black/bast fiber/polymer composite material with the block structure, surfaces of the bast fibers are directly coated with the gaseous white carbon black by using the coating assistant, and the white carbon black and the bast fibers are not required to be subjected to coupling agent treatment separately and then thermoplastic polymer matrix adding separately, so that the process flow is simple, and the prepared composite material has the special block structure, i.e., the bast fibers coated with the white carbon black form fiber bundle blocks of about 50 to 100 microns and are dispersed into thermoplastic polymer matrixes. 本发明提出种具有嵌块结构的白炭黑/