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All-steel giant-scale engineering tyre side glue and all-steel giant-scale engineering tyre using the same

A technology of engineering tires and sidewall rubber, which is applied to special tires, tire parts, transportation and packaging, etc., can solve the problems of unrealized formulation, accelerated delamination of inner rubber and outer rubber, and reduced tire service life. Achieve excellent anti-ozone effect

Inactive Publication Date: 2008-02-06
HAOHUA SOUTH CHINAGUILIN RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, when the EPDM rubber used in the inner layer is 1 part by weight, the characteristics of the EPDM rubber itself are insignificant in the whole composition, and it is difficult to play a role, and has no practical significance; When the EPDM rubber used in the inner layer is 90 parts by weight, it has a great negative impact on the molding effect of the tire, and even cannot be molded, so that the formula cannot be realized.
Moreover, the sidewall of the tire is made of multiple layers of sidewall rubber. Since the tire rotates rapidly while bearing the load, it will generate a lot of heat, which will promote the aging of the inner layer rubber and the outer layer rubber, thereby accelerating the aging of the inner layer rubber. Delamination of the outer layer rubber reduces the service life of the tire
At present, there is no public report on the application of EPDM rubber to the sidewall compound of single-ply all-steel giant engineering tires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In the actual production process of all-steel giant engineering tires, other processes can be carried out according to existing or other achievable methods, but the formula and method provided by the present invention are adopted when making sidewall rubber, and the steps are as follows:

[0031] 1) 12Kg EPDM rubber, 108Kg natural rubber, 60Kg N330 reinforcing carbon black, 14Kg aromatic oil, 3.6Kg zinc oxide, 3.0Kg stearic acid, 1.8Kg antioxidant 4020, 1.8Kg antioxidant RD, 2.4Kg The microcrystalline wax is put into a rubber internal mixer with a volume of 270 liters and a rotor speed of 20-40 rpm, and mixed at a speed of 40 rpm at 155-165°C for 3.5-4 minutes to obtain rubber compound A;

[0032] 2) Mix 1.2Kg sulfur, 1.4Kg accelerator NOBS, 0.2Kg N-cyclohexylthiophthalimide anti-scorch agent with compound A, and mix it in a rubber mixer at 105°C at 20 rpm Mixing at a speed of 1 / min for 4 minutes produces the all-steel giant engineering tire sidewall rubber containing EPD...

Embodiment 2

[0035] In the actual production process of all-steel giant engineering tires, other processes can be carried out according to existing or other achievable methods, but the formula and method provided by the present invention are adopted when making sidewall rubber, and the steps are as follows:

[0036] 1) 14Kg EPDM rubber, 12Kg butadiene rubber, 12Kg styrene-butadiene rubber, 82Kg natural rubber, 60Kg N550 reinforcing carbon black, 12Kg engine oil, 4.8Kg zinc oxide, 2.4Kg stearic acid, 1.8Kg antioxidant 4010Na , 1.8Kg anti-aging agent RD, 2.5Kg microcrystalline wax into a rubber internal mixer with a volume of 270 liters and a rotor speed of 20-40 rpm, at 155-165°C at a speed of 40 rpm for 4 minutes Mixing obtains rubber compound A;

[0037] 2) Mix 1.2Kg sulfur, 1.6Kg accelerator NOBS, 0.25Kg N-cyclohexylthiophthalimide anti-scorch agent with compound A, and mix it in a rubber mixer at 105°C at 20 rpm Mixing at a speed of 1 / min for 4.5 minutes can produce the all-steel giant...

Embodiment 3

[0040] In the actual production process of all-steel giant engineering tires, other processes can be carried out according to existing or other achievable methods, but the formula and method provided by the present invention are adopted when making sidewall rubber, and the steps are as follows:

[0041] 1) 12Kg EPDM rubber, 96.0Kg natural rubber, 12Kg butadiene rubber, 63KgN375 reinforcing carbon black, 16Kg aromatic oil, 4.2Kg zinc oxide, 2.4Kg stearic acid, 2.4Kg anti-aging agent 4020, 1.8Kg anti-aging Agent RD and 2.8Kg microcrystalline wax are put into a rubber internal mixer with a volume of 270 liters and a rotor speed of 20-40 rpm, and mixed for 4.5 minutes at a speed of 40 rpm at 155-165°C to obtain mixing Glue A;

[0042] 2) Mix 1.38Kg of sulfur, 1.4Kg of accelerator NS, 0.3Kg of N-cyclohexylthiophthalimide anti-scorch agent with compound A, and mix it in a rubber mixer at 105°C at 20 rpm Mixing at a speed of 1 / min for 4.5 minutes can produce the all-steel giant engi...

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Abstract

The present invention relates to a tyre side rubber with perfect ozone resistance, thermo-oxidative ageing resistance and flex crack resistance, applying ethylene -propylene-diene rubber in single-layer huge full steel engineering tyre; the invention also relates to the full steel huge engineering tyre using the tyre side rubber. The full steel huge engineering tyre using the tyre side rubber of the present invention comprises usable sulfur and / or sulfur rubber mixture, the rubber mixture comprises: a. 10-30 parts by weight of ethylene -propylene-diene rubber; b. 50-90 parts by weight of caoutchouc; c. 0-20 parts by weight of butadiene rubber and / or styrene butadiene rubber; and the total content of the ethylene -propylene-diene rubber, caoutchouc, butadiene rubber and / or styrene butadiene rubber is 100 parts by weight compositions. The tyre side rubber produced according to the formula has perfect ozone resistance, thermo-oxidative ageing resistance and flex crack resistance, the rigidity of the rubber material of the tyre side rubber is 55-70 Shore A, the tension intensity is 15-25 Mpa, the flex crack resistance grade is less than or equal to 6 grade / 300000 times.

Description

(1) Technical field: [0001] The invention relates to a sidewall rubber, in particular to a sidewall rubber of an all-steel giant engineering tire, and also relates to an all-steel giant engineering tire using the sidewall rubber. (two) background technology: [0002] In the current radial tires, the sidewall of the tire has no other skeleton materials except one or two nylon ply reinforcement layers on the carcass ply, and the rest are rubber layers. Therefore, the sidewall of the tire is the The weakest part, and the sidewall is the most protruding part of the tire, which bears the greatest load. Therefore, the sidewall of the tire is prone to cracks, which greatly reduces the service life of the tire. In order to solve this problem, after repeated studies, researchers believe that the above problems can be solved by providing a reinforcing layer on the sidewall or by improving the formula of the sidewall rubber. Ethylene-propylene-diene rubber (EPDM) is the ASTM name of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K5/47B60C1/00C08L23/16C08L9/00C08L9/06C08K3/00C08K5/00
Inventor 何桂德周胜
Owner HAOHUA SOUTH CHINAGUILIN RUBBER
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