High-temperature-resistant geocell material and preparation method thereof

Abstract

The invention discloses a high-temperature-resistant geocell material which is prepared from the following raw materials in parts by weight: 55-70 parts of high-density polyethylene, 6-13 parts of anethylene-vinyl acetate copolymer, 7-15 parts of polyamide 6, 2-5 parts of silane coupling agent graft modified nano graphene oxide, 6-10 parts of a nano reinforcing filler, 4-8 parts of an interface compatibilizer, 0.2-1 part of an ultraviolet absorbent, 0.3-1 part of an antioxidant and 0.4-1 part of a processing aid. The nano reinforcing filler is nano basic magnesium sulfate whiskers. The interfacial compatibilizer is at least two of maleic anhydride grafted polyethylene, a silane coupling agent KH560 and an aluminate coupling agent DL-411. The high-temperature-resistant geocell material disclosed by the invention is high in thermal deformation temperature under a load and has excellent high-temperature resistance; a cantilever beam is high in notch impact strength and good in impact resistance; the tensile strength is high and the mechanical property is good; the bending modulus is high; and the comprehensive mechanical property is good.

Description

technical field [0001] The invention relates to the technical field of functional polymer materials, in particular to a high-temperature 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 en...

AI Technical Summary

Problems solved by technology

[0012] 1. Poor high temperature resistance;

[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 aging resistance;

[0015] 4. At the place of ultrasonic welding, the polyolefin geocell material has poor fusion degree and is easy to be damaged;

[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.

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