Thermoplastic polyurethane foaming body sports field

A technology for thermoplastic polyurethane and sports venues, applied in coatings, buildings, roads, etc., can solve the problems of no restrictions on the use of toxic and hazardous substances or potentially toxic and hazardous substances, and achieve excellent rebound and compression recovery, good elasticity, The effect of suitable mechanical properties

Pending Publication Date: 2017-10-17
NINGBO GMF TECH
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fact is that so far in my country there is no limit standard and toxicity evaluation index for the release of toxic and harmful substances from plasti

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermoplastic polyurethane foaming body sports field
  • Thermoplastic polyurethane foaming body sports field
  • Thermoplastic polyurethane foaming body sports field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put the MDI-type thermoplastic polyurethane prepared by 4,4-MDI into a high-pressure reactor, feed carbon dioxide and pressurize, so that the pressure reaches 13Mpa and the temperature is 40°C. After 3 hours, quickly release the pressure and quickly put it into a foaming equipment heated to 100 ° C, and foam for 5 minutes to obtain ETPU. The density of ETPU at this time is 0.18g / cm 3 , the rebound rate is 30%, and the 50-degree compression set is 20%. Mix ETPU and MDI polyurethane adhesive at a mass ratio of 6:1, stir evenly, pour into the paver, pave with a thickness of 10mm, and cure and maintain for 24 hours. Use MDI polyurethane slurry and EPDM particles with an equivalent particle size of 1-3mm to mix evenly, pour it into the spraying machine, tilt the spray gun to 60 degrees to spray in the same direction, wait for 24 hours after spraying, and then spray again in the opposite direction. Spray it to the surface layer with a thickness of 2.5mm, and maintain it for...

Embodiment 2

[0032] Put 2,4-MDI and 4,4-MDI in a mass ratio of 1:1 to form an MDI-type thermoplastic polyurethane as a raw material, put it into a high-pressure reactor, feed carbon dioxide and pressurize, so that the pressure reaches 13Mpa, and the temperature is 40 ℃, at this time the carbon dioxide is in a supercritical state. In this state, the pressure is kept and infiltrated for 3 hours. After the pressure is released quickly, it is quickly put into the foaming equipment heated to 100 ℃, and foamed for 5 minutes to obtain ETPU. The density of ETPU at this time is 0.18g / cm 3 , the rebound rate is 30%, and the 50-degree compression set is 20%. Mix ETPU and MDI polyurethane adhesive at a mass ratio of 6:1, stir evenly, pour into the paver, pave with a thickness of 10mm, and cure and maintain for 24 hours. Use MDI polyurethane slurry and EPDM particles with an equivalent particle size of 1-3mm to mix evenly, pour it into the spraying machine, tilt the spray gun to 60 degrees to spray in...

Embodiment 3

[0035]Put 2,4-MDI and 4,4-MDI in a mass ratio of 1:1.5 to form an MDI-type thermoplastic polyurethane as a raw material, put it into a high-pressure reactor, feed carbon dioxide and pressurize, so that the pressure reaches 13Mpa and the temperature is 40 ℃, at this time the carbon dioxide is in a supercritical state. In this state, the pressure is kept and infiltrated for 3 hours. After the pressure is released quickly, it is quickly put into the foaming equipment heated to 100 ℃, and foamed for 5 minutes to obtain ETPU. The density of ETPU at this time is 0.18g / cm 3 , the rebound rate is 30%, and the 50-degree compression set is 20%. Mix ETPU and MDI polyurethane adhesive at a mass ratio of 6:1, stir evenly, pour into the paver, pave with a thickness of 10mm, and cure and maintain for 24 hours. Use MDI polyurethane slurry and EPDM particles with an equivalent particle size of 1-3mm to mix evenly, pour it into the spraying machine, tilt the spray gun to 60 degrees to spray in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of floors and relates to a sports field, in particular to a thermoplastic polyurethane foaming body sports field. The sports field is of a double-layer structure, namely a bottom layer and a surface layer; the bottom layer with the thickness being 9-13 mm is paved by mixing thermoplastic polyurethane foaming particles with an adhesive; and the surface layer with the thickness being 2.5-4 mm is formed by spraying breathable slurry doped with EPDM particles. The sports field is good in elasticity, impact force is absorbed, and moderate elasticity and rebound force are achieved so that physical power consumption can be reduced; foot impact force is moderately absorbed, and sports damage is reduced; and permanent deformation performance of the sports field is good, deformation cannot occur after long-term use, and the situation that the sports field cannot restore elasticity due to the heavy weight of track and field equipment is avoided.

Description

technical field [0001] The invention relates to sports fields, in particular to a thermoplastic polyurethane foam sports field, which belongs to the technical field of floors. Background technique [0002] The plastic runway material is composed of polyurethane prepolymer, mixed polyether, waste tire rubber or PU particles, pigments, additives, fillers to form the bottom layer, and EPDM rubber particles as the surface layer. 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. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E01C13/06C08J9/36C08J9/12C08L75/04
CPCC08J9/122C08J9/365C08J2203/06C08J2375/04C08J2423/16C08J2475/04E01C13/065
Inventor 秦柳高晗张聪许袁
Owner NINGBO GMF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap