Light-weight wear-resisting thermoplastic elastomer foaming sole material

A thermoplastic elastic and lightweight technology, applied in the field of shoe sole materials, to achieve the effect of saving energy, reducing production costs, and expanding the scope of application

Inactive Publication Date: 2010-10-20
CHINA LEATHER & FOOTWEAR IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention aims at the shortcomings of existing SBS foaming materials, and aims to provide a thermoplastic elastomer shoe so

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1:

[0033] The composition (mass ratio) is: 100 parts of SBS, 40 parts of naphthenic oil, 15 parts of calcium carbonate, 1.5 parts of AC, 3.0 parts of zinc oxide, 1.0 part of zinc stearate, and 1.0 part of crosslinking agent DCP.

[0034] The materials are weighed according to the above proportions, pre-mixed uniformly by a mixer, then blended and granulated in an extruder, and then molded and foamed at 160°C to 170°C, and the density of the foamed material was measured to be 0.40 g / cm 3 . The wear resistance of the sample was tested according to GB / T 3903.2-1994 after being placed at room temperature of 22.0 °C for 24 hours, and the wear scar length was 9.4 mm.

Example Embodiment

[0035] Example 2:

[0036] The composition (mass ratio) is: 100 parts of SBS, 40 parts of naphthenic oil, 5 parts of high-foaming resin additives, 1.5 parts of AC, 3.0 parts of zinc oxide, 15 parts of calcium carbonate, 1.0 parts of zinc stearate, and cross-linking agent DCP 1.0 servings.

[0037] The materials are weighed according to the above proportions, pre-mixed uniformly with a mixer, then blended and granulated in an extruder or in an internal mixer, and then molded and foamed at 150°C to 170°C, and the foaming was measured. The density of the material is 0.21g / cm 3 . After placing the sample at room temperature of 22.0 °C for 24 hours, the wear resistance was tested according to the GB / T 3903.2-1994 standard, and the wear scar length was 12.7 mm.

Example

[0038] Examples 3 to 6

[0039] The components and contents of the required raw materials and the preparation method are shown in Table 1, and the manufacturing process thereof is similar to that of Examples 1 and 2.

[0040] Table 1

[0041] component

[0042] component

[0043]It can be seen from the comparison between Example 1 and Example 2 that adding a high-foaming resin assistant α-methylstyrene copolymer to the SBS foaming system can greatly improve the foaming ratio of SBS, and the density is significantly reduced (from 0.40g / g / g). cm 3 reduced to 0.21g / cm 3 ). However, the density of the foamed material decreased, resulting in a severe deterioration of its wear resistance (wear scar length from 9.4 mm to 12.7 mm).

[0044] In order to improve the wear resistance of the material, the polymer wear resistance modifier UHMWPE was added, and two processing techniques were used to prepare the foamed material. By comparing Example 3 and Example 4, i...

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Abstract

The invention relates to a sole material, in particular to a thermoplastic elastomer foaming sole material which is added with alpha-methyl styrol copolymer serving as a high foaming resin aid and ultrahigh molecular weight polyethylene (UHMWPE) serving as a macromolecular wear-resisting modifier. The thermoplastic elastomer foaming sole material comprises the following components: styrol-butadiene-styrene block copolymer (SBS), softening oil, alpha-methyl styrol copolymer, UHMWPE, fillings, a parting agent, a foaming agent, a foaming aid and a cross-linking agent. The foaming material with high foaming (the density of the foaming material is between 0.30 and 0.50g/cm<3>) and excellent wear-resisting performance (the length of grinding crack is between 5.0 and 9.0 millimeters) is prepared by adding the UHMWPE and the alpha-methyl styrol copolymer into the SBS, the softening oil, the fillings and the like. In a mixed formula, other components and content are also adjusted, and a preparation process of the foaming material is adjusted and improved; and thus the foaming multiplying power of the sole material and the wear-resisting performance of soles are improved greatly, the production cost is reduced obviously, the environment is protected, and the energy is saved.

Description

(1) Technical field [0001] The invention relates to a shoe sole material, in particular to a thermoplastic elastomer foamed shoe sole material added with α-methylstyrene copolymer and ultra-high molecular weight polyethylene. (2) Background technology [0002] With the development of science and technology and the progress of society, people's living standards are constantly improving. Improving the quality and performance of various shoes and making wearers safer and more comfortable is the ultimate goal and direction of the development of the entire shoe industry. According to literature reports, for every 100 grams of shoe weight, the wearer's physical energy consumption will increase by 1%. In order to reduce physical energy consumption and improve wearing comfort, lightweight foam materials have become the main direction of research and development of shoe sole materials. [0003] Materials suitable for shoe soles include rubber, thermoplastic elastomers, plastics, etc...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/06C08K13/02C08K3/26C08K3/34C08K3/36C08K5/098C08K5/14C08J9/10C08J9/08A43B13/04
Inventor 常素芹钟宁庆陈之东
Owner CHINA LEATHER & FOOTWEAR IND RES INST
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