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Preparation method of sprayed surface layer of environment-friendly polyurethane plastic track

A plastic runway and polyurethane technology, applied in polyurea/polyurethane coatings, coatings, roads, etc., can solve the problem that the comprehensive physical properties of the runway cannot fully meet the requirements of national standards, the polyurethane plastic runway is easy to foam, and the service life of the plastic runway is short, etc. problems, achieve the effect of eliminating the environmental threat of heavy metals, excellent curing effect, and low residual monomer content

Inactive Publication Date: 2014-03-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use effect of the existing environment-friendly drier is not ideal, the prepared polyurethane plastic runway is easy to foam, the comprehensive physical properties of the runway cannot fully meet the requirements of the national standard, and the key properties such as hardness and strength are far behind the traditional polyurethane runway materials , causing the service life of the plastic runway to be short and the use effect to be compromised

Method used

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  • Preparation method of sprayed surface layer of environment-friendly polyurethane plastic track
  • Preparation method of sprayed surface layer of environment-friendly polyurethane plastic track
  • Preparation method of sprayed surface layer of environment-friendly polyurethane plastic track

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The raw material of the sprayed surface layer of an environment-friendly polyurethane plastic runway consists of component A, component B and an inert amine drier component. The proportioning ratio of raw materials of the present embodiment is as shown in table 1:

[0031] Table 1

[0032]

[0033] Drier component: N,N-dimethylcyclohexylamine, accounting for 0.5% of the mass of component B.

[0034] Preparation method of component A: Add the mixed polyether polyol N210 and N220 components into the reactor according to the formula, stir and heat up to 120°C, vacuum dehydrate until the mass fraction of water is 0.05%, cool down to 50°C, add TDI, Slowly raise the temperature to 60°C, stir at a constant temperature of 500r / min for 10 minutes, then continue to raise the temperature to 80°C, keep the constant temperature for 2 hours, cool down to 40°C, seal the storage tank, and set aside.

[0035] Preparation method of component B: put the above materials into the mixin...

Embodiment 2

[0038] The raw material of the sprayed surface layer of an environment-friendly polyurethane plastic runway consists of component A, component B and an inert amine drier component. The proportioning ratio of raw materials of the present embodiment is as shown in Table 2:

[0039] Table 2

[0040]

[0041] Drier component: N,N-dimethylcyclohexylamine, accounting for 0.3% of the mass of component B.

[0042] Preparation method of component A: Add the mixed polyether polyol MDI, N210, and N220 components into the reaction kettle according to the formula, stir and heat up to 130°C, vacuum dehydrate until the mass fraction of water is 0.04%, cool down to 50°C, add TDI, slowly raise the temperature to 60°C, stir at a constant temperature of 550r / min for 12 minutes, then continue to raise the temperature to 82°C, keep the constant temperature for 2.5 hours, cool down to 40°C, seal the storage tank, and set aside.

[0043] Preparation method of component B: put the above material...

Embodiment 3

[0046] The raw material of the sprayed surface layer of an environment-friendly polyurethane plastic runway consists of component A, component B and an inert amine drier component. The proportioning ratio of raw materials of the present embodiment is as shown in table 3:

[0047] table 3

[0048]

[0049] Drier component: N,N-dimethylcyclohexylamine, accounting for 0.5% of the mass of component B.

[0050]Preparation method of component A: Add the mixed polyether polyol N220 and N320 components into the reactor according to the formula, stir and heat up to 110°C, vacuum dehydrate until the mass fraction of water is 0.04%, cool down to 50°C, add TDI, Slowly raise the temperature to 60°C, stir at a constant temperature of 600r / min for 10 minutes, then continue to raise the temperature to 80°C, keep the constant temperature for 2 hours, cool down to 40°C and seal the storage tank for later use.

[0051] Preparation method of component B: put the above materials into the mixi...

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Abstract

The invention discloses a preparation method of a sprayed surface layer of an environment-friendly polyurethane plastic track. The method comprises the steps of preparing a component A: adding polyether polyol into a reaction kettle, stirring and heating to 80-160 DEG C, dehydrating, cooling to 40-50 DEG C, adding isocyanate, stirring, and performing constant-temperature reaction at 80-85 DEG C for 2-4 hours; preparing a component B: uniformly mixing polyether polyol, a chain extender, a plasticizer, an ultraviolet light absorber anti-mildew agent, a thixotropic agent, a silane coupling agent and filler, shearing at a high speed, milling, and performing vacuum heating at 60-70 DEG C for 1-3 hours; mixing the component A and component B at a mass ratio of 1:(3-5.5); adding an inert amine dryer; stirring uniformly and spraying on the bottom layer of the polyurethane track. By adopting the method disclosed by the invention, the specific pungent smell of a conventional polyurethane track is avoided, the foaming effect is reduced, the usability of the track is improved, and the service life of the track is prolonged.

Description

technical field [0001] The invention relates to the field of sprayed surface layers of polyurethane plastic runways, in particular to a method for preparing the sprayed surface layers of polyurethane plastic runways with a novel inert amine drier. Background technique [0002] In recent years, my country's polyurethane track and field plastic materials have entered a stage of rapid development. The pavement of polyurethane plastic track and field fields and courts is developing towards popularization and widening. The scope of pavement has expanded from professional sports venues to large, medium and primary schools. The environmental performance of materials is also increasingly concerned. The polyurethane runway has the characteristics of good flatness, high compressive strength, appropriate hardness and elasticity, and stable physical properties. However, in the drying and curing process of the traditional polyurethane track, lead naphthenate, zinc naphthenate, zinc isooc...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C08G18/66C08G18/48C08G18/16E01C13/06
Inventor 黄洪徐绍君司徒粤
Owner SOUTH CHINA UNIV OF TECH
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