Rubber composition for tire side of all-steel giant project tire and all-steel giant project tire

A rubber composition, engineering tire technology, applied in the direction of tire sidewalls, special tires, tire parts, etc., can solve the problems of complex components and unsatisfactory effects, and achieve excellent ozone resistance, flexural crack resistance and cutting resistance. The effect of mouth growth performance

Inactive Publication Date: 2010-01-06
HAOHUA SOUTH CHINAGUILIN RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber composition of the invention can reduce the weight of the tire, reduce the rolling resistance of the tire, and have better handling stability without reducing the durability; however, the selected components of the invention are more complicated and the selected The rubber composition and its proportioning amount are only suitable for the rubber composition for the tire sidewall of passenger cars, but for the rubber composition for the sidewall of the all-steel giant engineering tire with harsh driving conditions, its effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 15 parts of chlorobutyl rubber;

[0035] 85 parts of natural rubber;

[0036] 45 parts of N330 reinforcing carbon black;

[0037] 5 parts aromatic oil;

[0038] 3 parts of stearic acid;

[0039] Active zinc oxide 4 parts;

[0040] 2 parts of antioxidant A;

[0041] Anti-aging agent RD 2 parts

[0042] 1 part microcrystalline wax;

[0043] 1.5 parts of sulfur;

[0044] Accelerator DM 0.8 parts;

[0045] 0.4 parts of magnesium oxide;

[0046] Anti-scorch agent CTP 0.1 part.

[0047] The all-steel giant engineering tire sidewall compound prepared by the above-mentioned formula according to the conventional preparation method has a hardness of 50-58 Shore A, a tensile strength of 16.0-22.0Mpa, and an elongation at break of 550-500Mpa. 650%, flex crack grade ≤ 6 / 300,000 times.

Embodiment 2

[0049] 30 parts of chlorobutyl rubber;

[0050] 50 parts of natural rubber;

[0051]Butadiene rubber 20 parts;

[0052] 30 parts of N330 reinforcing carbon black;

[0053] 25 parts of N539 reinforcing carbon black;

[0054] 8 parts naphthenic oil;

[0055] 2 parts stearic acid;

[0056] 3 parts of zinc oxide;

[0057] Anti-aging agent 4020 1 part;

[0058] Anti-aging agent RD 1 part

[0059] 2 parts microcrystalline wax;

[0060] 1.0 parts of sulfur;

[0061] Accelerator DM 1 part;

[0062] 0.6 parts of magnesium oxide;

[0063] Anti-scorch agent NA 0.3 parts.

[0064] The all-steel giant engineering tire sidewall compound prepared by the above formula according to the conventional preparation method has a hardness of 52-62 Shore A, a tensile strength of 15.0-20.0Mpa, and an elongation at break of 500- 600%, flex crack grade ≤ 6 / 300,000 times.

Embodiment 3

[0066] 20 parts of chlorobutyl rubber;

[0067] 55 parts of natural rubber;

[0068] 25 parts of styrene-butadiene rubber;

[0069] 60 parts of N539 reinforcing carbon black;

[0070] 10 parts of paraffin oil;

[0071] 1.5 parts of stearic acid;

[0072] Active zinc oxide 5 parts;

[0073] Anti-aging agent RD 1 part;

[0074] Anti-aging agent 4010NA 1 part;

[0075] 1.8 parts of microcrystalline wax;

[0076] 0.5 parts of sulfur;

[0077] Accelerator DM 1.5 parts;

[0078] 0.5 parts of magnesium oxide;

[0079] Anti-scorch agent NA 0.2 parts.

[0080] The all-steel giant engineering tire sidewall compound prepared by the above formula according to the conventional preparation method has a hardness of 52-60 Shore A, a tensile strength of 15-20Mpa, and an elongation at break of 500-600 %, flex crack grade ≤ 6 / 300,000 times.

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Abstract

The invention discloses a rubber composition for a tire side of an all-steel giant project tire and an all-steel giant project tire using the composition. The rubber composition for the tire side comprises the following components: (a) 100 parts by weight of rubber component and (b) 40-70 parts by weight of reinforcing black carbon according to 100 parts by weight of (a), wherein the rubber component also comprises 10-50 parts by weight of butyl chloride rubber and the balance of natural rubber or the composition of cis-butadiene rubber and / or styrene-butadiene rubber and the natural rubber. The composition can be also matched with common rubber composition compounding agent. The tire side designed and manufactured according to the prescription has favorable resistance of ozone, thermo-oxidative ageing, yield cracking and crack increase, and the tire side glue has the hardness of 50 Chore A-62 Chore A, the tensile strength of 15 MPa-25 MPa and the yield cracking grade small than or equal to 6 grades / 300,000 times.

Description

(1) Technical field: [0001] The invention relates to a rubber composition for sidewalls, in particular to a rubber composition for sidewalls of all-steel giant engineering tires; the invention also relates to all-steel giant engineering tires using the rubber composition on the sidewalls. (two) background technology: [0002] Under normal road conditions, the sidewall of the tire will continuously deform. The sidewall is subjected to continuous excessive flexing, and it will crack under such conditions. In addition to flexion cracking, the sidewall is also subjected to atmospheric chemical effects, such as ozone erosion, etc., which will lead to corrosion and corrosion of the sidewall. Degradation, therefore, the rubber composition for tire sidewalls is required to have better aging resistance and flex cracking resistance. For the all-steel giant OTR tires that are mainly used in various large-scale mine transportation sites, due to the harsh driving conditions, the sidewal...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L23/28C08L9/00C08L9/06C08K3/04B60C1/00B60C13/00
Inventor 何桂德周胜许光明
Owner HAOHUA SOUTH CHINAGUILIN RUBBER
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