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CN-118496655-B - Caprolactone copolymerized foaming material, preparation method and sole

CN118496655BCN 118496655 BCN118496655 BCN 118496655BCN-118496655-B

Abstract

The invention discloses a caprolactone copolymerized foaming material, a preparation method and a sole, wherein the caprolactone copolymerized foaming material is prepared from the following components in parts by mass by a supercritical foaming mode, namely 90-95 parts of thermoplastic polyurethane, 1-3 parts of antioxidant, 0.1-0.5 part of plasticizer, 0.5-2 parts of ultraviolet absorbent, 1-4 parts of hydrolysis inhibitor and 2-5 parts of filler, wherein the thermoplastic polyurethane is prepared from the following components in parts by mass, 5-10 parts of butanediol, 8-15 parts of dihydrated oxalic acid, 2-5 parts of caprolactone, 6-10 parts of hexamethylene diisocyanate and 1-3 parts of neopentyl glycol. The material has light weight and excellent supporting and damping properties.

Inventors

  • DONG BIN
  • ZHU SHUANGHONG
  • SU JIAMING
  • Jiao Ticheng
  • Bei Zonglei

Assignees

  • 安踏（中国）有限公司

Dates

Publication Date
20260505
Application Date
20240530

Claims (9)

  1. 1. The caprolactone copolymerized foaming material is characterized by being prepared from the following components in parts by mass through a supercritical foaming mode: The thermoplastic polyurethane is prepared from the following components in parts by mass:
  2. 2. The caprolactone copolymer foam material as claimed in claim 1, wherein the antioxidant comprises the following components, by mass, 0.05-0.10 parts of 2, 6-di-tert-butyl-p-cresol, 0.6-2.0 parts of triethylene glycol ether-bis (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate and 0.35-0.90 parts of didodecyl thiodipropionate.
  3. 3. A caprolactone co-foaming material as claimed in claim 2, wherein the plasticiser is triphenyl phosphate.
  4. 4. A caprolactone co-foaming material as claimed in claim 3 wherein the uv absorber is N- (2-ethoxyphenyl) -N' - (2-ethylbenzene) - β -ethanediamide.
  5. 5. The caprolactone co-polymer foam of claim 4 wherein the anti-hydrolysis agent is polycarbodiimide.
  6. 6. The caprolactone co-polymer foam of claim 5 wherein the filler is silica.
  7. 7. A method for preparing a caprolactone copolymer foam material, which is characterized in that the caprolactone copolymer foam material is prepared by the following steps based on the components of the caprolactone copolymer foam material as defined in any one of claims 1 to 6: Step one, obtaining thermoplastic polyurethane by adopting a bulk polymerization mode according to components corresponding to the thermoplastic polyurethane; Step two, mixing the thermoplastic polyurethane obtained in the step one with other components to obtain a mixed material; step three, injecting the mixed materials into a mould, and foaming the mixed materials in a supercritical foaming mode; and fourthly, cooling and demolding after foaming is completed, and obtaining the caprolactone copolymerized foaming material.
  8. 8. The method for preparing a caprolactone-copolymerized foaming material as claimed in claim 7, wherein in the third step, the supercritical foaming condition is that the volume ratio of nitrogen to carbon dioxide is 75% -80% and 20% -25%, the pressure in the boosting stage is 12-14MPa, the temperature is 175-185 ℃, and the dwell time is 90-110min.
  9. 9. A sole made of the caprolactone copolymer foam material prepared by the method for preparing the caprolactone copolymer foam material according to claim 7 or 8.

Description

Caprolactone copolymerized foaming material, preparation method and sole Technical Field The invention relates to the technical field of copolymerized foaming materials, in particular to a caprolactone copolymerized foaming material, a preparation method and a sole. Background In racing, there is a high demand for shoes that are both lightweight enough and excellent in support and cushioning. Only shoes with this property can ensure that the optimum state of motion is maintained during running at high speeds. The soles of the prior racing shoes are generally made of foaming materials obtained by foaming original blanks by a supercritical foaming technology, and the materials of the original blanks are generally EVA, and the materials have lighter weight but are difficult to consider other key performances. Disclosure of Invention The invention aims to overcome the defects or problems in the prior art and provide a caprolactone copolymerized foaming material, a preparation method and a sole, wherein the caprolactone copolymerized foaming material has light weight and excellent supporting and cushioning properties. In order to achieve the above purpose, the present invention adopts the following technical scheme: The technical scheme I is that the caprolactone copolymerized foaming material is prepared from the following components, by mass, 90-95 parts of thermoplastic polyurethane, 1-3 parts of an antioxidant, 0.1-0.5 part of a plasticizer, 0.5-2 parts of an ultraviolet absorber, 1-4 parts of an anti-hydrolysis agent, and 2-5 parts of a filler in a supercritical foaming mode, wherein the thermoplastic polyurethane is prepared from the following components, by mass, 5-10 parts of butanediol, 8-15 parts of oxalic acid dihydrate, 2-5 parts of caprolactone, 6-10 parts of hexamethylene diisocyanate and 1-3 parts of neopentyl glycol. Based on the technical scheme I, the antioxidant comprises, by mass, 0.05-0.10 part of 2, 6-di-tert-butyl-p-cresol, 0.6-2.0 parts of triethylene glycol ether-di (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate and 0.35-0.90 part of didodecyl thiodipropionate. According to a third technical scheme based on the second technical scheme, the plasticizer is triphenyl phosphate. Based on the technical scheme IV of the technical scheme III, the ultraviolet absorbent is N- (2-ethoxyphenyl) -N' - (2-ethylbenzene) -beta-ethanediamide. According to the fifth technical scheme, the anti-hydrolysis agent is polycarbodiimide. Based on the technical scheme III, the filler is silicon dioxide. In addition, the invention also provides a technical scheme seven, which is based on the components of the caprolactone copolymer foaming material in any one of the first to sixth technical schemes, and the method comprises the following steps of firstly obtaining thermoplastic polyurethane in a bulk polymerization mode according to the components corresponding to the thermoplastic polyurethane, secondly mixing the thermoplastic polyurethane obtained in the first step with other components to obtain a mixed material, thirdly injecting the mixed material into a mould, foaming in a supercritical foaming mode, and fourthly cooling and demoulding after foaming is completed to obtain the caprolactone copolymer foaming material. In the third step, the supercritical foaming condition is that the volume ratio of nitrogen to carbon dioxide is 75-80 percent and 20-25 percent, the pressure in the boosting stage is 12-14MPa, the temperature is 175-185 ℃, and the pressure maintaining time is 90-110min. In addition, the invention also provides a technical scheme III, which is characterized in that the sole is made of the caprolactone copolymer foam material prepared by the preparation method of the caprolactone copolymer foam material in the technical scheme seven or eight. As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art: The caprolactone copolymerized foaming material provided by the invention adopts the innovatively developed thermoplastic polyurethane as a main base material, the components of the thermoplastic polyurethane mainly comprise butanediol, glycol dihydrate, caprolactone, hexamethylene diisocyanate and neopentyl glycol, wherein the butanediol is used as a soft segment component to provide flexibility and low temperature resistance, the glycol dihydrate is used as a hard segment component to enhance the rigidity and wear resistance of the material, and the specific component proportion is combined, so that the prepared thermoplastic polyurethane has balanced soft and hard segments, the thermoplastic polyurethane is ensured to have good elasticity and enough structural strength, simultaneously, the caprolactone and the neopentyl glycol are used as chain extenders to increase the molecular weight of the thermoplastic polyurethane, the strength and the stability of the material are improved, the hexamethylene diisocyanate is