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A kind of etpu prefabricated material and the method for using this prefabricated material to prepare runway

A runway, carbon dioxide technology, used in roads, roads, pavements, etc., can solve problems such as weak elasticity, and achieve the effects of improving speed, maintaining consistency, improving elasticity and anti-aging performance

Active Publication Date: 2021-11-02
张健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its elasticity has a more obvious trend of weakening over time.

Method used

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  • A kind of etpu prefabricated material and the method for using this prefabricated material to prepare runway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: plate preparation

[0021] S1, preparing TPU particles;

[0022] S2, introduce TPU particles, carbon dioxide or nitrogen and polycarboxylic acid into the closed system, and operate according to the parameters described in Table 1;

[0023] S3. After 3 hours of treatment, perform a pressure relief operation to obtain ETPU;

[0024] S4, ETPU is prepared plate;

[0025] S5, carry out the toxicity test according to GB / T 26572-2011 for the plate obtained, get Table 2;

[0026] S6, directly according to GB36246-2018, carry out the detection of physical property for the plate obtained and obtain Table 3;

[0027] S7. Continuously impact the obtained plate with an average pressure of 300kPa (circular reciprocating metal plate pressing), the degree of deformation of the impact is 3cm (need to be controlled below 1 / 2 of the total thickness of the plate), and the number of impacts is set The vertical deformation was measured after 60000 cycles and then allowing t...

Embodiment 2

[0035] Example 2: Use the board obtained in Example 1 to make a runway, apply primer on the base layer, then bond the ETPU prefabricated board to the base layer to form an elastic layer, and then set a strengthening layer on the elastic layer. The reinforcement layer is prepared according to the following method: the reinforcement layer is formed by mixing polyurethane A material and polyurethane B material in a mass ratio of 1:3, and then laying on the middle layer. The reinforcing layer can also be sprayed with a spraying machine after mixing EPDM particles and polyurethane paint in a mass ratio of 1:0.8-2, preferably 1:1.

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Abstract

An ETPU prefabricated material and a method for preparing a runway using the prefabricated material are prepared according to the following method: impregnating TPU particles in an environment of supercritical carbon dioxide, and then performing foaming treatment; Add polycarboxylic acid to it. This application adds polycarboxylic acid to the supercritical fluid, because polycarboxylic acid has good reactivity, so in the process of TPU generating ETPU, polycarboxylic acid can form bond inside, after forming bond, there are two aspects Advantages: On the one hand, when there is a lot of supercritical fluid, the amount of polycarboxylic acid is also large, so the possibility of forming bonds is also large, and the bonds in this case can avoid the formation of isolated cavities; on the other hand , On the whole, due to the formation of cross-linked substances due to the internal secondary reaction, the overall elasticity and anti-aging performance are improved.

Description

technical field [0001] The present application relates to an ETPU prefabricated material and a method for preparing a runway using the prefabricated material. 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 good flatness, high compressive strength, appropriate hardness and elasticity, and stable physical properties. It is conducive to athletes' speed and technical performance, 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 sports floor material. [0003] For the pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/12C08L75/04C08K5/092E01C13/00
CPCC08J9/0023C08J9/122C08J2203/06C08J2203/08C08J2375/04E01C13/00
Inventor 张健
Owner 张健