Modified polyurethane resin composite material for artificial grass and preparation method thereof

Abstract

The invention relates to a modified polyurethane resin composite material for artificial grass and a preparation method thereof. The composite material is prepared from the following raw materials inparts by weight: 20-30 parts of a modified polyurethane resin matrix and 70-80 parts of continuous fibers. The modified polyurethane resin matrix is prepared by the following method: mixing isocyanateand polyether alcohol for reaction to obtain a component A; uniformly mixing 4, 4'-diamino-3, 3'-difluorodiphenylmethane with polyether alcohol to obtain a component B; uniformly mixing the componentA and the component B, and adding alpha-methacrylic acid and dibutyltin dilaurate for reaction to obtain a modified polyurethane resin matrix. Compared with the prior art, the polyurethane resin matrix is modified through formula design, so that the elasticity, the toughness, the strength, the wear resistance and the ductility of the composite material are greatly improved, and the composite material can be used for manufacturing artificial grass.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a modified polyurethane resin composite material for artificial grass and a preparation method thereof. Background technique [0002] Artificial turf was born in the United States in the 1960s. It is a artificial lawn made of non-living plastic chemical fiber products as raw materials. Unlike natural turf, it does not need to consume resources such as fertilizers and water necessary for growth. It can meet the needs of high-intensity sports 24 hours a day, and has simple maintenance, rapid drainage, and excellent site flatness. Artificial turf is widely used in special venues for hockey, baseball, and rugby, public practice fields for sports such as football, tennis, and golf, or as ground pavement to beautify the indoor environment. [0003] At present, the main material used to construct artificial turf is polymer, which is due to the excellent physical, chemical and mech...

AI Technical Summary

Problems solved by technology

Unsaturated polyester has poor mechanical properties and cannot be used in some occasions that require high mechanical properties, and the curing agent is peroxide, which is flammable and explosive, and processing has certain dangers

Epoxy resin is a high-performance resin, but its price is expensive, its curing speed is slow, and because of its high cross-linking, the material is hard and brittle, and its toughness is insufficient

[0005] Patent CN102639314A discloses a pultrusion resin system comprising (a) a di- or polyisocyanate, (b) a compound having at least two isocyanate-reactive groups, (c) a catalyst, (d) a functional A polyacid with a degree greater than or equal to 2 and optionally (e) other auxiliaries and additives, wherein the polyacid has a boiling point of at least 200°C at standard pressure and is soluble in a solvent having at least two isocyanate-reactive However, the performance of composite materials is not ideal when pultrusion is used to prepare artificial grass, and its elasticity, toughness, strength, wear resistance and ductility are not good.

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