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Environmental protection weeping plastic track

A plastic track, environmentally friendly technology, applied in the direction of roads, roads, adhesives, etc., can solve the problems of unreachable tensile strength and elongation, exceeding the standard, etc.

Inactive Publication Date: 2004-12-08
上海康达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this one-component PU binder, if TDI is used as raw material, the free TDI will exceed the standard; if only MDI (diphenylmethane diisocyanate) is used, the plastic track made of it will performance, especially the tensile strength and elongation cannot meet the requirements of the national standard GB / T14833-93), and these runway adhesives and construction also use harmful chemicals such as toluene solvents and heavy metal catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] One-component PU binder preparation

[0032] React 61 parts of polypropylene glycol ethers with molecular weights of 1000 and 2000, 37 parts of TDI and other mixed polyisocyanates and 1.2 parts of butanediol at 85°C for 4 hours, add an appropriate amount of additives after the reaction, and cool to room temperature for later use. The detected NCO content is 9%, and the free TDI content is 0.2%.

Embodiment 2

[0034] red paste preparation

[0035] Grind 12.5 parts of plasticizer and 28.2 parts of iron red into color paste, add 38.6 parts of dehydrated polypropylene glycol ether (molecular weight is 400 and 2000), 19 parts of low molecular polyols, 125 parts of solvent gasoline, 6.3 parts of rheological additives, Stir an appropriate amount of additives at high speed for 1 hour until dipped with a glass rod and does not flow.

Embodiment 3

[0037] Preparation of red PU spray paste

[0038] 200 parts of the PU binder of Example 1, 100 parts of the red paste of Example 2, 300 parts of φ1.5mm red EPDM colloids, and 3 parts of catalyst, and stir evenly to form the water-permeable runway surface layer spray colloids. Make it into a 4-5mm thick rubber block and cure it at 70°C for 24 hours. The test results are shown in Table 1:

[0039] Hardness Shore A

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Abstract

An environment protective and water penetrative plastic trick involves a polymer material, consisting of adhesive, pigment for spraying adhesive, catalyst for carboxylic salt, black waste rubber granules, and color EPDM granules. It is constructed by: making mono-component polyurethane as primary agent to bind recovered rubber granules; mixing with catalyst and stirring uniformly; mechanically spreading; curing at atmosphere - 70 deg.C to form a plastic layer with thickness of 4 - 10mm; and then spreading well-mixed polyurethane adhesive, color EPMD granules and catalyst to form a top plastic layer, finally curing to form the said trick with a plastic layer and a cement substrate. The construction are not only available for tricks, but also for other pavements with low cost, high strength, large extension rate, and good penetration. It can be constructed mechanically and effectively with good flatness.

Description

1. Technical field: [0001] The present invention relates to a kind of polymer synthetic material, more specifically refers to an environment-friendly water-permeable plastic runway, which is suitable for building plastic runways in stadiums, and is also suitable for other plastic sports fields and ground pavement, with low cost, high strength, extended High rate, air permeability and water seepage, all physical properties have reached national standards, can be mechanized construction, high efficiency, good flatness, no grain drop. 2. Background technology: [0002] At present, most plastic runways in China use two-component polyurethane (PU), which belongs to the TDI-MOCA-heavy metal catalyst system. Therefore, it is determined that the harmful substances in this runway raw material are the free TDI (toluene diisocyanate) content and the heavy metal HG (mercury or lead) content that exceed the national limit requirements for harmful substances (GB / 18582, 18583-2001), as fo...

Claims

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Application Information

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IPC IPC(8): C04B41/48C09J175/04E01C13/06
CPCC04B41/009C04B2111/0075C04B41/4884
Inventor 王国梁姚其胜陆企亭
Owner 上海康达新材料科技有限公司
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