Formula for reducing tire bead protection rubber heat generation performance and compression deformation

A compression deformation and heat generation technology, which is applied in the field of formula for reducing the heat generation and compression deformation of bead protectors, can solve the problems of bead bulging, high heat generation and compression deformation, cracks, etc. Bulge, reduced dynamic heat generation and compression deformation, performance-enhancing effects

Inactive Publication Date: 2017-09-26
SICHUAN YUANXING RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally high heat generation and high compression deformation, and there may be bead bulging and crack accident risks during tire use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The formula for reducing the heat generation and compression deformation of the bead protector disclosed in this implementation includes: natural rubber: 100phr; N326 carbon black: 50phr; zinc oxide: 3phr; stearic acid: 2phr; RD: 1phr; reinforcing resin Sulfur: 4phr; N-cyclohexyl-2-benzothiazole sulfenamide: 1.0phr; Hexamethoxymethylmelamine resin: 1.0phr.

[0016] The rubber compound prepared by this formula is applied to the production of 155 / R12LT CR618 88 / 86N 8PR. After the laboratory durability running (implemented according to the FMVSS139 standard), the performance is improved by 8% and the failure point is not at the bead position.

Embodiment 2

[0018] The formula for reducing the heat generation and compression deformation of the bead protector disclosed in this implementation includes: natural rubber: 100phr; N326 carbon black: 40phr; zinc oxide: 4phr; stearic acid: 3phr; RD: 2phr; reinforcing resin Sulfur: 5phr; N-cyclohexyl-2-benzothiazole sulfenamide: 0.7phr; Hexamethoxymethylmelamine resin: 1.5phr.

[0019] The rubber compound prepared by this formula is applied to the production of 155 / R12LT CR618 88 / 86N 8PR. After the laboratory durability running (implemented according to the FMVSS139 standard), the performance is improved by 8% and the failure point is not at the bead position.

[0020] The specific performance is:

[0021] 1. The final fatigue temperature rise of the Goodrich compression heat generation test is reduced from the existing 33°C to 25°C.

[0022] 2. Under the test conditions of pressure 15Pa; temperature: 50°C; time: 6 hours, the compression deformation is reduced from 1.4% to 1.1%.

[0023] ...

Embodiment 3

[0026] The formula for reducing the heat generation and compression deformation of the bead protector disclosed in this implementation includes: natural rubber: 100phr; N326 carbon black: 55phr; zinc oxide: 5phr; stearic acid: 3phr; RD: 3phr; reinforcing resin Sulfur: 4phr; N-cyclohexyl-2-benzothiazole sulfenamide: 0.9phr; Hexamethoxymethylmelamine resin: 2phr.

[0027] The rubber compound prepared by this formula can promote the perfect cooperation between the tire bead protector and the rim under dynamic conditions, ensure the tire's durability and air retention performance are significantly improved, and reduce the possibility of bead bulges and tires during tire use. Risk of rip accidents.

[0028] After the prepared compound is applied to the production of 155 / R12LT CR618 88 / 86N 8PR, the performance of laboratory durability running (implemented according to FMVSS139 standard) is improved by 8% and the failure point is not at the bead position.

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PUM

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Abstract

The invention discloses a formula for reducing tire bead protection rubber heat generation performance and compression deformation. The formula comprises 100phr of natural rubber, 40 to 60phr of N326 carbon black, 2 to 5phr of zinc oxide, 1 to 3phr of stearic acid, 0 to 3phr of RD, 3 to 10phr of reinforcing resin, 3 to 5phr of sulphur, 0.5 to 1.0phr of N-cyclohexyl-2-benzothiazole sulfonamide and 1.0 to 2.0phr of hexamethoxymethyl melamine resin. The rubber prepared by the rubber formula provided by the invention has the advantages that the dynamic heat generation performance and compression deformation of the rubber material can be further reduced, so that the tire bead protection rubber and a wheel rim are perfectly matched in the dynamic state; the durable driving performance of the tire is ensured; the air preservation performance is obviously improved; the accident risks of tire ring bubbling and cracking possibly occurring in the use process of the tire are reduced.

Description

technical field [0001] The invention relates to the technical field of tire rubber formulations, in particular to a formulation for reducing heat build-up and compression deformation of tire lip protectors. Background technique [0002] The existing tire lip protection formula is mainly reflected in wear resistance, low heat generation and aging resistance. However, there are generally high heat build-up and high compression deformation, and there is a risk of bead bulging and crack accidents during tire use. Contents of the invention [0003] The invention overcomes the deficiencies of the prior art and provides a formula for reducing heat generation and compression deformation of bead protector rubber. It is expected to improve PCR / LTR radial full-size tire bead heat generation and compression deformation. It promotes the perfect cooperation between the tire bead protector and the rim in a dynamic state, ensures that the tire's durability and air retention are signific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L101/00C08K13/02C08K3/04C08K3/22C08K5/09C08K5/3437C08K3/06C08K5/47
CPCC08L7/00C08K2003/2296C08L2205/03C08L101/00C08K13/02C08K3/04C08K3/22C08K5/09C08K5/3437C08K3/06C08K5/47
Inventor 彭科
Owner SICHUAN YUANXING RUBBER
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