Crack-resistant rubber sole and production method thereof

A technology for rubber soles and rubber substrates, which can be used in shoe soles, footwear, applications, etc., can solve problems such as cracks and flex cracks, poor fit of midsoles, etc., and achieve the effect of simple preparation methods

Active Publication Date: 2019-06-25
FUJIAN DONGXIE RUBBER PLASTIC INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an anti-crack rubber sole and a preparation method thereof. The anti-crack rubber sole provided by the present invention can effectively solve the problem of rubber soles due to lamination o

Method used

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  • Crack-resistant rubber sole and production method thereof
  • Crack-resistant rubber sole and production method thereof
  • Crack-resistant rubber sole and production method thereof

Examples

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preparation example Construction

[0061] The present invention also provides a preparation method of the crack-resistant rubber sole described in the above technical solution, comprising the following steps:

[0062] a) Mix the rubber matrix, white carbon black, zinc oxide, lubricant, white smoke activator, p-phenylenediamine anti-aging agent, rubber protective wax, thiourea anti-aging agent, phenolic anti-aging agent and functional additives evenly, Carry out kneading, blanking obtains base material;

[0063] b) After kneading the base material obtained in step a), slice it and let it stand, then add insoluble sulfur and a rubber vulcanization accelerator and mix evenly, and finally release the sheet in sheet form to obtain a crack-resistant rubber sole.

[0064] In the present invention, the rubber matrix, white carbon black, zinc oxide, lubricant, white smoke activator, p-phenylenediamine anti-aging agent, rubber protective wax, thiourea anti-aging agent, phenolic anti-aging agent and functional auxiliary ...

Embodiment 1

[0076] The formula quantity of the raw materials used in Example 1 is shown in Table 1.

[0077] The formula quantity of raw material used in table 1 embodiment 1

[0078] raw material

parts by weight

Butadiene rubber

35

natural rubber

23.8

SBR

10

white mineral oil

5

Silica

15

Zinc oxide

3

stearic acid

0.2

Diethylene glycol

1.5

Anti-ozone protective wax

1

Di-n-octylthiourea

4

insoluble sulfur

1

N-tert-butyl-2-benzothiazole sulfenamide

0.5

[0079] (1) Butadiene rubber, natural rubber, styrene-butadiene rubber, white mineral oil, white carbon black, zinc oxide, stearic acid, diethylene glycol, anti-ozone protective wax and di-n-octyl thiourea in the above raw materials are The formula amounts in Table 1 were mixed evenly, mixed with an internal mixer at 120° C. for 20 minutes, and then cut to obtain the base material.

[0080] (2) After the ...

Embodiment 2

[0082] The formulation amount of the raw materials used in Example 2 is shown in Table 2.

[0083] The formula quantity of raw material used in table 2 embodiment 2

[0084] raw material

parts by weight

Butadiene rubber

45

natural rubber

10

Nitrile rubber

10

Silica

25

Zinc oxide

4

Plasticizer A

1.5

polyethylene glycol

2

Microcrystalline Wax

1.2

Difurfurylthiourea

3.8

insoluble sulfur

0.7

dibenzothiazole disulfide

1

[0085] (1) Butadiene rubber, natural rubber, nitrile rubber, white carbon black, zinc oxide, plasticizer A, polyethylene glycol, microcrystalline wax and difurfuryl thiourea in the above-mentioned raw materials are according to the formula in table 2 Mix the formula amount evenly, knead at 120°C for 20 minutes with an internal mixer, and then cut to obtain the base material.

[0086] (2) After the base material obtained in step (1) is op...

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Abstract

The invention provides a crack-resistant rubber sole. The crack-resistant rubber sole is produced from, by weight, 45-80 parts of a rubber matrix, 5-45 parts of white carbon black, 3-5 parts of zinc oxide, 0.2-1.5 parts of a lubricant, 1.5-3 parts of a white smoke activator, 0-1.5 parts of a p-phenylenediamine antioxidant, 0.4-1.2 parts of rubber protecting wax, 0.5-4 parts of a thiourea antioxidant, 0-1.5 parts of a phenolic antioxidant, 0.7-1.5 parts of insoluble sulfur, 0.5-2 parts of a rubber vulcanization accelerator and 0-17.5 parts of a functional assistant; and the thiourea antioxidantis one or more of di-n-octyl thiourea, di-n-butyl thiourea, tributyl thiourea, dialkyl thiourea, difurfuryl thiourea, 2-imidazolidinethione and diethylthiourea. The crack-resistant rubber sole can effectively solve the problems of cracking, caused by lasting mechanical stress generated by lamination of the rubber sole, and flex cracking, also can solve the problem of poor adhesion of traditionalrubber soles to an EVA midsole, and can meet the requirements for basic physical properties of shoe materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more specifically relates to a crack-resistant rubber sole and a preparation method thereof. Background technique [0002] Rubber soles are made by mixing natural rubber, synthetic rubber and other additives. At present, they can achieve the wear-resistant and anti-skid effects required by shoe outsoles. However, with the intensification of competition in the industry and the diversification of finished shoe designs, the problem of cracking of rubber soles came up unexpectedly. Specifically, due to the industry competition of finished shoes, the rubber content of rubber soles is getting lower and lower, while the content of inorganic fillers is getting higher and higher, which inevitably leads to poor crack resistance of the soles. On the other hand, with the diversification of the shape design requirements of finished shoes, the fitting of rubber soles and EVA midsoles has gradual...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08L7/00C08L9/06C08L9/02C08L11/00C08L91/06C08K3/36C08K3/22C08K5/09C08K5/06C08K5/47C08K13/02A43B13/04
Inventor 林维生卓东贤
Owner FUJIAN DONGXIE RUBBER PLASTIC INDAL
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