Geogrid flame-retardant polyethylene material for preventing alga attachment for long term and preparation method of material

Abstract

The invention discloses a geogrid flame-retardant polyethylene material for preventing alga attachment for a long term. Nano-magnesium hydroxide is taken as a flame retardant after the surface of nano-magnesium hydroxide is silane-modified, therefore, the hydrophobicity of magnesium hydrate is improved to a certain degree, the compatibility of magnesium hydrate in a polymer is improved, and the effects of improving the material mechanical property and the flame retardance are achieved; red phosphorus is encapsulated, therefore, the problems that red phosphorus is prone to moisture absorption and poor in safety are solved, encapsulated modified red phosphorus is heated to generate phosphoric acid and metaphosphoric acid, then a strong dehydrating agent polymetaphosphate is generated, decomposition of magnesium hydroxide is accelerated, and a synergistic flame retardant effect is achieved. In addition, the surface of inorganic filler fluorapatite powder is chemically modified, therefore, the compatibility of the powder in the polymer is improved, and the mechanical strength and the wear resistance of the product are improved; the polyethylene material prepared through compatibility with other effective auxiliaries is good in flame retardance, a finished product prepared by applying the polyethylene material into a geogrid material can prevent alga attachment when the finished product is used in a humid environment and has the long-term property, and the valid time can be up to ten years.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant polyethylene material for long-term anti-algae adhesion geogrid and a manufacturing method thereof. Background technique [0002] Plastic geogrid is made of polypropylene (PP) or high-density polyethylene (HDPE) with additives added to the extruder, heated and melted, and then extruded by a special rotating head under the pushing action of the screw. Mesh new plastic engineering material. Among them, high-density polyethylene geogrid has the characteristics of light weight, high strength, corrosion resistance and impact resistance, and long service life. It is often used in various aspects such as highways, railways, docks, coal mine false roofs, and building safety. However, high-density polyethylene is a flammable material, and it is not easy to extinguish after being caught on fire, which affects the application of high-density polyethylene geogrid...

AI Technical Summary

Problems solved by technology

From the perspective of environmental protection, it is commonly used to add inorganic fillers to high-density polyethylene, such as calcium carbonate, talcum powder, glass beads, mica, etc., although it can improve the strength, rigidity, and dimensional stability of the material. However, The relative density of these inorganic fillers is relatively high, adding to the polymer makes the relative density of the prepared composite material high, resulting in the decline of some mechanical property parameters of HDPE, and the compatibility between the inorganic filler and the organic polyethylene is not good, and the surface of the inorganic material needs to be carried out. Modification can be better compounded with the matrix, the preparation process is more complicated, and the cost is higher