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

A technology of polyurethane resin and artificial turf, which is applied in the field of polyurethane materials, can solve problems such as slow curing speed, inability to apply to occasions with high mechanical performance requirements, hard and brittle materials, etc., and achieve the effect of improving elasticity

Inactive Publication Date: 2020-05-19
云南孚道体育设施科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A modified polyurethane resin composite material for artificial turf, prepared through the following steps:

[0032] (1) Preparation of modified polyurethane resin matrix

[0033] The isocyanate and polyether alcohol with a molar ratio of 6:1 were continuously stirred at 70°C for 4 hours in a nitrogen atmosphere to obtain component A; the 4,4'-diamino- Mix 3,3'-difluorodiphenylmethane and polyether alcohol evenly to obtain component B. When mixing, first melt 4,4'-diamino-3,3'-difluorodiphenylmethane at 120°C , and then mixed evenly with polyether alcohol; mix A component with a mass ratio of 0.6:1 and B component evenly, and add α-methacrylic acid accounting for 20% of the total mass of A component and B component, accounting for A Dibutyltin dilaurate with a total mass of 0.1% of component B and component B was reacted in an oven at 90°C for 4 hours to obtain a modified polyurethane resin matrix, wherein the polyether alcohol was polyether diol, and the isocyanate wa...

Embodiment 2

[0036] A modified polyurethane resin composite material for artificial turf, prepared through the following steps:

[0037] (1) Preparation of modified polyurethane resin matrix

[0038] The isocyanate and polyether alcohol with a molar ratio of 9:1 were continuously stirred at 80°C for 3 hours in a nitrogen atmosphere to obtain component A; the 4,4'-diamino- Mix 3,3'-difluorodiphenylmethane and polyether alcohol evenly to obtain component B. When mixing, first melt 4,4'-diamino-3,3'-difluorodiphenylmethane at 140°C , and then mixed with polyether alcohol; mix the A component and B component with a mass ratio of 0.9:1, and add α-methacrylic acid accounting for 30% of the total mass of A component and B component, accounting for A Dibutyltin dilaurate with 0.15% of the total mass of component B and component B was reacted in an oven at 150°C for 2 hours to obtain a modified polyurethane resin matrix. Wherein, the polyether alcohol is polyether diol, and the isocyanate is isop...

Embodiment 3

[0041] A modified polyurethane resin composite material for artificial turf, prepared through the following steps:

[0042] (1) Preparation of modified polyurethane resin matrix

[0043] The isocyanate and polyether alcohol with a molar ratio of 8:1 were continuously stirred at 75°C for 3 hours in a nitrogen atmosphere to obtain component A; the 4,4'-diamino- Mix 3,3'-difluorodiphenylmethane and polyether alcohol evenly to obtain component B. When mixing, first melt 4,4'-diamino-3,3'-difluorodiphenylmethane at 130°C , and then mixed with polyether alcohol evenly; mix A component and B component with a mass ratio of 0.8:1, and add α-methacrylic acid accounting for 25% of the total mass of A component and B component, accounting for A Dibutyltin dilaurate with 0.12% of the total mass of component B and component B was reacted in an oven at 100°C for 3 hours to obtain a modified polyurethane resin matrix. Wherein, the polyether alcohol is polyether diol, and the isocyanate is d...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K7/06C08G18/66C08G18/48C08G18/32
CPCC08K7/06C08G18/6685C08G18/48C08G18/3814C08L75/08
Inventor 张青
Owner 云南孚道体育设施科技有限公司
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