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Tire bead protective rubber with excellent flexibility

A flexible and excellent technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of tires and rims not tightly fitting, unusable, and inconvenient for drivers, so as to achieve good tire performance and improve flexibility The effect of stability and process stability

Inactive Publication Date: 2012-06-13
SICHUAN TYRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the assembly process of tires and rims, if the flexibility of the rubber material is low, the toe of the tire will be damaged, resulting in the lack of tight fit between the tire and the rim, and the decrease in the air pressure in the tire will affect the driving safety of the vehicle; if the toe is seriously damaged, the tire will be scrapped and cannot be used
We often find this phenomenon in tire maintenance stations, causing inconvenience to drivers, causing waste of resources, and even laying hidden dangers for safe driving of cars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Natural rubber grade SMR20 45.0

[0025] Butadiene rubber BR9000 55.0

[0026] Stearic acid 2.0

[0027] Zinc Oxide 5.0

[0028] Antiaging agent 4020 2.5

[0029] Antiaging agent RD 1.5

[0030] Protective Wax 1.2

[0031] Carbon black N375 56.0

[0032] Silica 8.0

[0033] Reinforcing resin grade PFM-C 8.5

[0034] Aromatic oil 3.5

[0035] Accelerator NS 1.4

[0036] Insoluble sulfur IS-6005 2.8

[0037] Anti-scorch agent CTP 0.3

[0038] In this embodiment, an intelligent mixing process with joint control of time, energy and power is used to manufacture the bead protection compound. The first stage of mixing and feeding sequence: natural rubber grade SMR20, butadiene rubber BR9000 are first added to the internal mixer for preliminary mixing, and then stearic acid, zinc oxide, antioxidant 4020, antioxidant RD, protective wax, reinforcement Resin grade PFM-C and carbon black, white carbon black compounding agent, finally add aromatic oil. The...

Embodiment 2

[0063] Natural rubber grade SMR20 58.0

[0064] Butadiene rubber BR9000 42.0

[0065] Stearic acid 2.0

[0066] Zinc Oxide 5.0

[0067] Antiaging agent 4020 2.5

[0068] Antiaging agent RD 1.5

[0069] Protective Wax 1.2

[0070] Carbon black N375 64.0

[0071] Silica 8.0

[0072] Reinforcing resin grade PFM-C 6.0

[0073] Aromatic oil 3.5

[0074] Accelerator NS 1.2

[0075] Insoluble sulfur IS-6005 2.8

[0076] Anti-scorch agent CTP 0.3

[0077] In this embodiment, an intelligent mixing process with joint control of time, energy and power is used to manufacture the bead protection compound. The first stage of mixing and feeding sequence: natural rubber grade SMR20, butadiene rubber BR9000 are first added to the internal mixer for preliminary mixing, and then stearic acid, zinc oxide, antioxidant 4020, antioxidant RD, protective wax, reinforcement Resin grade PFM-C and carbon black, white carbon black compounding agent, finally add aromatic oil. The...

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Abstract

The invention relates to a tire bead protective rubber material with excellent flexibility and a processing process thereof. According to the design scheme provided by the invention, the formation is mainly composed of the following components: natural rubber SMR20, butadiene rubber BR9000, stearic acid, zinc oxide, an antioxidant 4020, an antioxidant RD, protective wax, carbon black N375, white carbon black, reinforced resin PFM-C, aromatic hydrocarbon oil, an accelerating agent NS, an insoluble sulfur IS-6005 and a scorch retarder CTP (N-(cyclohexylthio) phthalimide). In the formation, a crude rubber system in which the natural rubber and the butadiene rubber coexist is adopted, and a novel material namely reinforced resin PFM-C is used; the rubber material is produced according to the formation, and the process is simple and convenient and is low in cost. The invention provides the tire bead protective rubber material with excellent flexibility for production of tires.

Description

[0001] Technical field [0002] The invention relates to a bead protection rubber material with excellent flexibility and a processing technology thereof, which is used in the production of passenger radial tires. Background technique [0003] The bead protective rubber is located at the rim of the tire. After the tire is assembled with the rim, it directly contacts the rim, and constantly feels and transmits the stress changes between the automotive mechanical parts and the tire, accompanied by frequent strains. This use performance requires that the bead protective rubber should have: small deformation, high hardness and strong flexibility, especially the requirements of flexibility. During the assembly process of the tire and the rim, if the flexibility of the rubber material is low, the toe of the tire will be damaged, causing the tire and the rim to not fit tightly. . We often find this phenomenon in the tire repair station, causing inconvenience to drivers, causing w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K5/09C08K3/22C08K3/04C08K3/36C08K3/06B60C1/00
Inventor 杨齐卿勤罗建刚李冬陈键高秋英刘晓庆余萍钟建武熊国华冯友林
Owner SICHUAN TYRE & RUBBER CO LTD
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