Anti-aging geocell material and preparation method thereof

Abstract

The invention discloses an anti-aging geocell material. The high-density polyethylene material is prepared from the following raw materials in parts by weight: 70 to 85 parts of high-density polyethylene, 7 to 16 parts of ethylene-vinyl acetate copolymer, 2 to 6 parts of basalt fiber, 3 to 8 parts of nano zinc oxide, 0.2 to 1 part of ultraviolet absorbent, 0.3 to 1 part of antioxidant, 2 to 6 parts of interfacial compatibilizer and 0.3 to 1 part of processing aid. The ultraviolet absorbent is at least one of a hindered amine ultraviolet absorbent, benzotriazole UVP and dihydroxy benzophenone UV531; the antioxidant is a mixture of a hindered phenol main antioxidant and a phosphite ester auxiliary antioxidant, and the mass ratio of the hindered phenol main antioxidant to the phosphite esterauxiliary antioxidant is 1:(0.2-0.4). The aging-resistant geocell material disclosed by the invention is long in oxidation induction time and excellent in aging resistance; the tensile strength is high and the mechanical property is good. The geocell material is high in cantilever beam notch impact strength and good in impact resistance, is high in the bending modulus and has good comprehensive mechanical property.

Description

technical field [0001] The invention relates to the technical field of functional polymer materials, in particular to an aging-resistant geocell material and a preparation method thereof. Background technique [0002] Geocell is a kind of geosynthetic material with three-dimensional network structure, unique three-dimensional structure, which can effectively restrain the filling in the grid, and form a stable structural layer together with the filling, showing that other planar geosynthetics The incomparable engineering effect is being widely used in weak roadbed reinforcement, slope protection, retaining wall construction and other projects. [0003] The polyolefin geocell product is a geosynthetic material with a three-dimensional honeycomb structure, which is made of modified polyolefin as raw material, extruded, cut, and then ultrasonically welded. Due to the long production process of geocells, many molding processes, and complex and changeable application environments...

AI Technical Summary

Problems solved by technology

[0012] 1. The aging resistance is poor, and it is easier to age when used outdoors in engineering, and the service life is short;

[0013] 2. The notched impact strength of the cantilever beam is low; the tensile strength is low; the flexural modulus is small; the comprehensive mechanical properties are poor (poor physical and mechanical properties);

[0014] 3. Poor low temperature resistance; poor high temperature resistance;

[0015] 4. At the ultrasonic welding place, the polyolefin geocell material has a poor degree of fusion and is easily damaged in a low temperature or high temperature environment;

[0016] In summary, the polyolefin geocell materials currently used have poor comprehensive performance, are easily damaged, have limited use environments, and have a short service life.