Ventilated polyurethane plastic race-track surface layer cementing material

Abstract

The invention discloses a ventilated polyurethane plastic race-track surface layer cementing material, and belongs to the technical field of race-track construction. The ventilated polyurethane plastic race-track surface layer cementing material consists of a component I and a component II at the mass ratio of 1:(3-4), wherein the component I is prepolymer containing isocyanate end group prepared from environment-friendly polyisocyanate, polyether glycol and an addition agent by reacting in a reaction kettle for 3 to 4 hours at the temperature of 70 to 80 DEG C, and the component II comprises polyether glycol with three functionalities, inorganic filler, pigment, a plasticizing agent, a curing agent, an antioxygen, an ultraviolet light absorber and the like. The obtained plastic race-track has the advantages that surface particles are not easy to fall out, the surface is smooth, the quality of the plastic race-track is improved, the service life of the plastic race-track is prolonged, the qualification rate of the plastic race-track is increased to more than 95% as compared with the conventional 82%, the production cost and the use cost are reduced. Moreover all of the used raw materials are environmental protection materials, and belongs to environment friendly materials, the environmental pollution is avoided, and security is provided for the health safety of sporters.

Description

technical field [0001] The invention belongs to the technical field of runway construction, and in particular relates to a breathable polyurethane plastic runway surface layer adhesive material with good shock resistance and durability. Background technique [0002] The plastic runway is composed of polyurethane prepolymer, mixed polyether, pigments, additives, etc. The plastic runway has the advantages of good flatness, high compressive strength, appropriate hardness and elasticity, and is widely used in schools, gymnasiums and other places. At present, the line drawing paint of the plastic runway on the market is basically ordinary polyurethane enamel paint. This white paint will have serious yellowing phenomenon under the sun's irradiation. Usually, the yellowing will be obvious 2 to 3 days after the line is drawn, and This kind of line drawing paint is usually oil-based paint, which contains a large amount of organic solvents, which volatilize into the air, pollute the ...

AI Technical Summary

Problems solved by technology

At present, the line drawing paint of the plastic runway on the market is basically ordinary polyurethane enamel paint. This white paint will have serious yellowing phenomenon under the sun's irradiation. Usually, the yellowing will be obvious 2 to 3 days after the line is drawn, and This kind of line drawing paint is usually oil-based paint, which contains a large amount of organic solvents, which volatilize into the air, pollute the atmosphere and cause harm to the human body, and the plastic runway used is easy to age due to the use of raw materials, glued materials and improper proportions. As a result, the surface layer of the plastic runway has problems such as shedding of particles and poor flatness. The plastic runway has a short service life and needs to be repaired or replaced frequently, which not only increases the cost, but also brings great inconvenience to users.