Cast-in-situ type polyurethane micro-foaming runway surface layer and construction technology thereof

Abstract

The invention discloses a cast-in-situ type polyurethane micro-foaming runway surface layer and a construction technology thereof, and particularly relates to the field of sports materials. The cast-in-situ type polyurethane micro-foam runway surface layer comprises an elastic layer, and the elastic layer is prepared from a component A and a component B in a reaction mode, wherein the component Ais prepared from the following adopted main materials in parts by weight: 10-20 parts of polyether polyol, 10-20 parts of a diluent and 60-70 parts of HDI tripolymer, and the component B is prepared from the following adopted main materials in parts by weight: 20-30 parts of polycarbonate diol (PCDL), 5-10 parts of a chain extender, namely dimethylolpropionic acid (DMPN), 20-30 parts of MDI, 2-10parts of triethylamine (TEA), 10-30 parts of deionized water, 5-10 parts of a pigment, 20-25 parts of a filter and 0.1-0.2 part of an additive. By correspondingly preparing the component A and the component B, prepared polyurethane glue and a polyurethane sizing agent are mixed and stirred, a water-based polyurethane foaming body is obtained by adding a foaming agent, a foam stabilizing agent anda thickener, inert gas is introduced in the stirring process, the foaming rate of the elastic layer is increased, an uniformly-dispersed microporous structure is quickly formed, the effect of buffering impact force is achieved, the impact absorption property and the overall performance of the surface layer structure can be improved, the quality is stable, and construction is convenient.

Description

technical field [0001] The invention relates to the field of sports materials, in particular to a cast-in-place polyurethane micro-foamed track surface and a construction process thereof. Background technique [0002] The surface layer of the synthetic material sports field must meet the requirements of the relevant physical and mechanical properties and durability performance stipulated by the International Federation of Athletic Associations and national standards. The impact absorption performance of the surface material made by the cast-in-place process from the all-plastic type and the mixed type has been difficult to meet the standard (except for the breathable type and the composite type). The prefabrication process adopts a special structural form, that is, irregular regular holes are made at the bottom of the rubber coil. This structure can release the surface layer well when it is subjected to external impact force, and buffer the external impact force, so that th...

AI Technical Summary

Problems solved by technology

[0004] But a kind of water-based polyurethane synthetic material plastic runway provided in the above-mentioned technical scheme still has many disadvantages in actual use, such as the impact absorption performance needs to be improved, the waterproof effect is not good, and the cost of ETPU particles is very high in addition, and the particle proportion is very small. Construction is very difficult

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