▎ 摘　　要

NOVELTY - Use of liquid metal containing substance as surface modifier, is claimed. USE - The substance containing liquid metal is useful as surface modifying agent for improving dispersibility of filler in polymer matrix, where the complex material is widely used in traffic, building, electronic power and energy fields. ADVANTAGE - The liquid metal can improve the functionality of materials: electrical conductivity, dielectric, magnetic conductivity, thermal conductivity, photothermal, medical, etc., improves the dispersion of related materials when used in complex. The liquid metal realizes the functional modification of materials (e.g. filler) through a simple "one-step method", without solvents and by-products, and without post-treatment. It is a new technology with simple production and strong versatility, and a small amount of liquid metal introduction not only solves the problem that traditional surface modification methods cannot provide functional gains, but also improves the dispersion of fillers. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) method for improving dispersibility of filler in a polymer matrix comprising modifying the filler with a substance containing liquid metal, and mixing the filler and the substance containing liquid metal by mechanical force to obtain a corresponding modified filler, adding modified filler to the polymer matrix to improve the dispersion of the filler in the matrix, where, the volume ratio of the liquid metal-containing substance to the filler is: 85-99.99 pts. vol. filler, and 15-0.01 pts. vol. liquid metal, further, the volume ratio of the modified filler to the polymer matrix is: 0.01-99 pts. vol. modified filler, and 99.99-1 pts. vol. polymer matrix, further the modified treatment refers to acidification treatment or hydrogen peroxide treatment; (2) modified material, where it is prepared by adding a substance containing liquid metal to the filler, and then adopting a processing method of mechanical mixing to obtain the corresponding modified material; (3) method for improving dielectric constant of a filler comprising modifying the filler with a substance containing liquid metal, and mixing the filler and the substance containing liquid metal by mechanical force to obtain a corresponding modified filler, where, the filler includes barium titanate, barium zirconate titanate, barium strontium titanate, Mxene and/or molybdenum disulfide; (4) method for improving filler electromagnetic shielding performance comprising using the substance containing liquid metal to modify the filler, mixing the filler and the substance containing liquid metal by mechanical force to obtain the corresponding modified filler, where the volume ratio of the liquid metal-containing substance to the filler is: 0.01-15.00:99.99-85, further, the filler includes aluminum oxide, magnesium oxide, zinc oxide, titanium dioxide, ferric oxide, ferroferric oxide, vanadium pentoxide, silicon dioxide, nickel hydroxide, calcium carbonate, montmorillonite, mica, bentonite, boron nitride, silicon carbide, aluminum nitride, silicon nitride, barium titanate, barium zirconate titanate, barium strontium titanate, Mxene and/or molybdenum disulfide; and (5) amphiphilic filler comprising a filler and a surface modifier, and the volume ratio of the liquid metal-containing substance to the filler is: 0.01-15.00:99.99-85, where, the surface modifier is a substance containing liquid metal, the filler includes aluminum oxide, magnesium oxide, zinc oxide, titanium dioxide, ferric oxide, ferric oxide, vanadium pentoxide, silicon dioxide, nickel hydroxide, calcium carbonate, montmorillonite, mica, bentonite, nitrogen Boron oxide, silicon carbide, aluminum nitride, silicon nitride, barium titanate, barium zirconate titanate, barium strontium titanate, Mxene, expanded graphite, graphene oxide, carbon nanotubes, copper, iron, nickel, silver, magnesium, zinc, tungsten, lithium, sodium, manganese, stainless steel, rubidium iron boron and/or samarium cobalt.