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Apex on all-steel radial tire and tire with the same

A radial tire and apex technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problem of inability to match tire curing speed, improve anti-vulcanization reversion performance, prolong service life, and improve thermal stability. performance effect

Inactive Publication Date: 2013-06-05
BEIJING RES & DESIGN INST OF RUBBER IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cannot match the overall cure rate of the tire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The upper apex rubber of industrial and mining all-steel truck radial tires is composed of the components in the following table 1:

[0027] Table 1

[0028] Natural rubber NR 100 Carbon black N330 45 Zinc oxide 4 stearic acid 2 Antiaging agent 3.5 Aromatic oil 3.75 insoluble sulfur 3.14 Accelerator CZ 0.65

[0029] The physical properties of the apex on the industrial and mining type all-steel radial truck tire produced according to this method are shown in Table 2 below:

[0030] Table 2

[0031] Tear strength (kN / m) 88 300% modulus stress (MPa) 9.26 500% modulus stress (MPa) 20.2 Tensile strength (MPa) 26.9 Elongation at break% 602 permanent deformation 33 Number of times of flexion when the flexion reaches level 6: 10,000 times 12

Embodiment 2

[0033] The upper apex rubber of industrial and mining all-steel radial truck tires is composed of the following three components:

[0034] table 3

[0035] Natural rubber NR 100 Carbon black N330 50 Zinc oxide 4.5 stearic acid 2 Antiaging agent 3.5 Sulfurized anti-reversion agent 2 Aromatic oil 2 insoluble sulfur 3.14 Accelerator CZ 0.7

[0036] The physical properties of the apex on the industrial and mining type all-steel radial truck tire produced according to this method are shown in Table 4 below:

[0037] Table 4

[0038] Tear strength (kN / m) 60 300% modulus stress (MPa) 11 500% modulus stress (MPa) 22.4 Tensile strength (MPa) 24.7 Elongation at break% 542 permanent deformation 30 Number of times of flexion when the flexion reaches level 6: 10,000 times 19.5

Embodiment 3

[0040] The upper apex rubber of industrial and mining all-steel radial truck tires is composed of the following 5 components:

[0041] table 5

[0042] Natural rubber NR 80 Butadiene rubber 9000 20 Carbon black N326 50 Zinc oxide 4.5 stearic acid 2 Antiaging agent 3.5 Sulfurized anti-reversion agent 2 Aromatic oil 2 insoluble sulfur 2.8 Accelerator CZ 0.8

[0043] The physical properties of the apex on the industrial and mining type all-steel radial truck tire produced according to this method are shown in Table 6 below:

[0044] Table 6

[0045] Tear strength (kN / m) 58 300% modulus stress (MPa) 10.8 500% modulus stress (MPa) 22.3 Tensile strength (MPa) 23.7 Elongation at break% 529 permanent deformation 18 Number of times of flexion when the flexion reaches level 6: 10,000 times 43.5

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PUM

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Abstract

The invention relates to apex on an all-steel radial tire and the all-steel raidal tire with the apex. The apex on the all-steel radial tire comprises a rubber component containing natural rubber or natural rubber and butadiene rubber and a mixed stuffing based on 100 weight parts of rubber components and containing 25-65 weight parts of reinforcement carbon black. The rubber component based on 100 weight parts further comprises the following auxiliary materials, by weight 2.0-5.5 parts of zinc oxide, 1-3 parts of stearic acid, 1-5 parts of anti-aging agent, 0.5-5.0 parts of vulcanization anti-reversion agent, 1-6 parts of aromatic oil, 1-5 parts of insoluble sulfur, and 0.2-1.2 parts of accelerant CZ. The apex prepared from the above formula has good elsasticity modulus, good flexing resistance, a good performance of resisting crack growth, and good adhesiveness with carcass ply, and is especially appropriate for industrial and mining type all-steel truck radical tires.

Description

[0001] technical field [0002] The invention relates to an upper apex rubber for all-steel radial tires, in particular to an upper apex rubber for industrial and mining type all-steel truck radial tires, and also relates to an industrial and mining type all-steel truck radial tire using the upper apex rubber. Background technique [0003] The standing wave phenomenon will appear in the tire under normal operation conditions, and the repeated appearance of the standing wave will cause the tire to be damaged. Strengthening the rigidity of the tire bead is considered to be an effective way to suppress the standing wave phenomenon. The structure of the radial tire is unique. From the analysis of tire driving mechanics, the part that bears the greatest load is the belt layer, followed by the bead part, and the most important part of the bead part is the apex rubber core, which is located at the upper end of the bead ring. Filling, positioning, and stress bearing. From the prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K5/47C08K3/04B60C1/00
Inventor 何晓玫武文奎李文东蔡庆石滨张伟
Owner BEIJING RES & DESIGN INST OF RUBBER IND