Thermoplastic vulcanized foamed beads, preparation method and application

A thermoplastic vulcanization and foaming bead technology, used in applications, shoe soles, clothing, etc., can solve the problems of easy yellowing, non-wear resistance, easy water absorption, etc., to improve yellowing resistance, improve comfort, and reduce costs. Effect

Inactive Publication Date: 2018-05-18
晋江市辉燕塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention develops a high wear resistance, softness, yellowing resistance, environmental protection and high performance aiming at the disadvantages of non-abrasion resistance, easy yellowing, easy water absorption, easy breakage, unfavorable environmental protection and other shortcomings of the shoe midsole materials currently on the market. Expanded bead with thermoplastic vulcanizate and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Formula: 70 parts of polyester TPU, 30 parts of CPE

[0024] Process: Set the temperature of the kneader to 170°C, add CPE and TPU in sequence according to the proportion (dry in a vacuum oven at 90°C for 2 hours before use), add 3 parts of 5000 mesh talc powder after melting, and the UV absorber is UV- 3 0.3 parts, mixed evenly and added 0.25 parts of odorless DCP as a cross-linking agent, discharged after the torque was balanced, and pressed into tablets with a mill. Set the temperature of the extruder to 170°C in the first section, 180°C in the second section, and 190°C in the third section, add the kneaded film to melt, and water-cut granulation. The thermoplastic vulcanizate particle sample is placed in the reaction kettle, and CO 2 、Temperature 130℃, pressure 8MPa, after saturation for 30min, quickly release the pressure to obtain thermoplastic vulcanizate foamed beads, the density of foamed beads is 0.15±0.04g / cm 3 , and then put the foamed beads into the mold ...

Embodiment 2

[0027] Formula: TPU 70 parts, CSM 30 parts

[0028] Process: Weigh TPU / CSM of required quality according to the ratio, 3 parts of nano titanium dioxide, 0.3 part of DCP, and 0.3 part of UV-3. The temperature from the barrel to the head of the twin-screw extruder is 100-190°C. Put TPU / CSM nano-titanium dioxide and UV-3 into the extruder, mix evenly and add odorless DCP, dynamic vulcanization, water cutting granulation after extrusion, to obtain thermoplastic vulcanizate particles, put the thermoplastic vulcanizate particle samples into the reaction kettle, feed carbon dioxide, temperature 133°C, pressure 10MPa, after saturation for 30min, quickly release the pressure to obtain Thermoplastic vulcanizate expanded beads. Foam bead density 0.13±0.04g / cm 3 , and then put the foamed beads into the mold and pass through the water vapor for thermocompression molding, the steam pressure is 0.24MPa, and the foamed shoe midsole is obtained.

[0029] Basic properties: density is 0.2g / cm...

Embodiment 3

[0031] Formula: TPU 80 parts, CSM 20 parts

[0032] Process: Set the temperature of the kneader to 180°C, add TPU (dried in a vacuum oven at 90°C for 2 hours before use) and CSM, add 2 parts of nano-silica and 0.3 parts of UV-3 after melting, and mix evenly Add 1 part of cross-linking agent TRA, discharge the material after the torque is balanced, and press into tablets with the mill. Set the temperature of the extruder to 160°C in the first section, 175°C in the second section, and 190°C in the third section, add the kneaded film to melt and extrude, and water-cut granulation. The thermoplastic vulcanizate particle sample is placed in the reaction kettle, and CO 2 , temperature 130°C, pressure 15MPa, after saturation for 30 minutes, release the pressure quickly to obtain thermoplastic vulcanizate foamed beads. Foam bead density 0.16±0.04g / cm 3 , and then put the foamed beads into the mold and pass through water vapor for hot pressing, the steam pressure is 0.2MPa, and the ...

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Abstract

The invention relates to thermoplastic vulcanized foamed beads, preparation method and application. The thermoplastic vulcanized foamed beads are prepared from, by mass, 100 parts of a thermoplastic vulcanized material, 0.1-5 parts of a cross-linking agent, 1-3 parts of a nucleating agent and 0.1-0.3 part of an ultraviolet absorbing agent. The thermoplastic vulcanized foamed beads prepared according to the method are high in abrasion resistance, flexibility, resilience, yellowing resistance, aging resistance, environmental friendliness, nontoxicity, recoverability, softness, light weight and slip resistance. The preparation method has advantages that safety and nontoxicity are achieved, so that true environmental friendliness is realized; in addition, simplicity, safety and easiness in realization of continuous industrial production are realized.

Description

technical field [0001] The invention relates to a thermoplastic vulcanized foamed bead, in particular to a thermoplastic vulcanized foamed bead for shoe midsoles, a preparation method and application. Background technique: [0002] Foam materials for shoe soles are required to have good wear resistance, resilience, softness, fatigue resistance, and anti-slip properties. At present, the midsole of EVA blended and foamed shoes has a high density, insufficient elasticity, large compression set, poor anti-slip performance, hardening phenomenon in winter, and difficult recycling after cross-linking, which is not conducive to environmental protection; BASF in Germany TPU resin as raw material, using physical foaming technology, successfully developed non-crosslinked TPU foam bead material (ETPU), and applied to shoe sole materials, with good processability, low compression set, high resilience, weather resistance . However, the yellowing resistance and anti-skid property of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L23/28C08L23/34C08K3/34C08K5/14C08K3/36C08J9/12A43B13/04
CPCA43B13/04C08J9/122C08J2203/06C08J2375/06C08J2423/28C08J2423/34C08K3/34C08K3/36C08K5/14
Inventor 丁安辉丁明灿
Owner 晋江市辉燕塑胶有限公司
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