The invention discloses a light-weight, high-
toughness and low-water-absorption-ratio
ultra high molecular weight polyethylene (UHMWPE) / nylon 6 micro-foaming
composite material and a preparation method thereof. The
composite material is prepared from 97 to 99 weight percent of a
polyamide composite material and 1 to 3 weight percent of a chemical
foaming agent, wherein the
polyamide composite material is prepared from the following components in parts by weight: 53 to 82 parts of PA6 (
Polyamide 6), 6 to 12 parts of a compatilizer, 10 to 30 parts of UHMWPE, 3 to 5 parts of a modified inorganicnucleating agent, 0.2 to 0.4 part of an
antioxidant, 0.5 to 1 part of a
lubricant and 0 to 2 parts of other auxiliary agents. According to the light-weight, high-
toughness and low-water-absorption-ratio
ultra high molecular weight polyethylene / nylon 6 micro-foaming composite material, HDPE (High-density
Polyethylene)-g-GMA (
Glycidyl Methacrylate) is used as an interface bulking agent so that the interface
binding force between the UHMWPE and the PA6 is enhanced, the
impact strength of the PA6 is improved and the water
absorption ratio of the PA6 is reduced; meanwhile, three-phase chain sections are mutually entwisted so that the melt strength of the PA6 is improved; the modified inorganic nucleating agent is subjected to chemical
grafting modification through KH550 and GMA and the heterogeneous
nucleation effect is remarkable; a dense
bubble nucleation point is formed and the micro-foaming material with dense, fine and smooth bubble pores is obtained; the material has the characteristics of light weight, high
impact strength, low water
absorption ratio,
high wear resistance and the like; foaming is realized through direct injection molding and a technology is simple; the material is widely applied to a lightweight technology of automobiles, household appliances,
electronics and electrical appliances and the like.