Anti-flaming polyethylene material for impact-resisting wear-resisting geogrid and manufacturing method thereof

Abstract

The invention discloses an anti-flaming polyethylene material for an impact-resisting wear-resisting geogrid. After the surface of nano-magnesium hydroxide is modified by silane, nano-magnesium hydroxide is used as a flame retardant, the hydrophobicity of magnesium hydrate is improved to a certain degree, the compatibility of magnesium hydrate in a polymer is improved, the effect of improving material mechanics and flame retardance is achieved, the problems that red phosphorus is likely to absorb moisture and poor in safety are relieved by carrying out encapsulation modification on red phosphorus, the red phosphorus subjected to encapsulation modification is heated to form phosphoric acid and metaphosphoric acid, then, the strong dehydrating agent polymetaphosphate is formed, decomposition of magnesium hydrate is accelerated, and a synergistic flame retardant effect is achieved. The surface of inorganic filler sepiolite powder is chemically modified, the compatibility of inorganic filler sepiolite powder in the polymer is improved, the mechanical strength and wear resistance of the product are improved, other effective additives are also adopted in a compatible mode, and the obtained polyethylene material has the characteristics of being good in flame retardance, good in machinable property, low in cost and simple in processing process, and has the advantages of being good in anti-impact toughness, resistant to high temperature and the like when applied to geogrid materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant polyethylene material for impact-resistant and wear-resistant geogrids 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 ...

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