Method for laying elastic layer at bottom of composite plastic track on basis of EPDM

Abstract

The invention discloses a method for laying an elastic layer at the bottom of a composite plastic track on the basis of EPDM. The method comprises the following steps of: step 1), base surface treatment, step 2), coating of a waterproof primer, step 3), installing of a frame mold, step 4), laying of the elastic layer, and 5) repairing of the surface of the elastic layer. The method has the advantages of simple process, high bonding degree and long service life. The impurities in the pores on the surface of the base surface can be completely removed by pickling, in this way, the waterproof primer will penetrate completely into the pores of the surface, and interpenetrating bond is formed to avoid delamination and bubble formation. By repairing the surface of the elastic layer, the problem that the overall flatness of the elastic layer is reduced because the elastic layer is laid down can be effectively solved. The elastic layer is more perfectly attached to a surface layer, and the problem of hollowness due to gaps is avoided. The safety guarantee is provided for training of athletes.

Description

technical field [0001] The invention relates to the technical field of laying a plastic runway, in particular to a laying method based on an elastic layer at the bottom of an EPDM composite plastic runway. Background technique [0002] The plastic track is also called the all-weather track and field track. It is composed of polyurethane prepolymer, mixed polyether, waste tire rubber, EPDM rubber particles or PU particles, pigments, additives, and fillers. The plastic runway has the characteristics of high compressive strength, appropriate hardness and elasticity, and stable physical properties, which is conducive to the performance of athletes' speed and technology, effectively improving sports performance and reducing the rate of falls. The plastic runway is composed of polyurethane rubber and other materials. It has certain elasticity and color, and has certain anti-ultraviolet ability and aging resistance. It is internationally recognized as the best all-weather outdoor s...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the elastic layer at the bottom of the plastic track is not used to measure the flatness of the surface when it is laid, resulting in waves after the surface layer is laid, which not only affects the training of athletes, but also tends to fall off due to the low fit Layer problems seriously affect the overall quality and service life of the plastic runway