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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 sole material with light weight, good wear resistance, low production cost, environmental protection and energy saving and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 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 parts of zinc stearate, and 1.0 parts of crosslinking agent DCP.

[0034] Weigh the ingredients according to the above ratio, use a mixer to pre-mix evenly, blend and granulate in the extruder, and then mold and foam at 160°C to 170°C. The measured density of the foamed material is 0.40 g / cm 3 . The wear resistance of the sample was tested according to the GB / T 3903.2-1994 standard after being placed at room temperature at 22.0°C for 24 hours, and the wear scar length was 9.4mm.

Embodiment 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, crosslinking agent DCP 1.0 copies.

[0037] Weigh the ingredients according to the above ratio, use a mixer to pre-mix evenly, blend and granulate in an extruder or an internal mixer, and then mold and foam at 150°C to 170°C, and the foaming is measured. The density of the material is 0.21g / cm 3 . The wear resistance of the sample was tested according to the GB / T 3903.2-1994 standard after being placed at room temperature 22.0°C for 24 hours, and the wear scar length was 12.7mm.

Embodiment 3～6

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

[0040] Table 1

[0041] components

Example 3

Example 4

Example 5

Example 6

SBS

100

100

100

100

naphthenic oil

35

35

40

40

UHMWPE

25

25

25

25

α-Methylstyrene copolymer

5

5

5

5

[0042] components

Example 3

Example 4

Example 5

Example 6

calcium carbonate

0

0

10

10

talcum powder

15

15

0

0

AC

1.0

1.0

1.5

1.5

sodium bicarbonate

0.2

0.2

0

0

Zinc oxide

2.5

2.5

3.0

3.0

Zinc stearate

1.5

1.5

1.0

1.0

Cross-linking agent DCP

1.0

1.0

1.0

1.0

Process con...

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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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