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Automotive rubber material, preparation method and application thereof

A technology for rubber materials and vehicles, applied in the field of rubber materials for vehicles and their preparation, can solve the problems of shortened service life, poor flexural fatigue resistance, etc. Effect

Active Publication Date: 2019-06-21
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, natural rubber is mostly used in the middle layer of automobile torsion beam hinges. Usually, the hardness of the rubber material in the middle layer is increased to increase the static stiffness of the torsion beam hinge to ensure the bearing capacity of the torsion beam hinge. , the flex fatigue resistance is poor, resulting in the failure of the torsion beam hinge due to the cracking of the middle layer rubber during the dynamic fatigue process, and the service life is greatly shortened

Method used

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  • Automotive rubber material, preparation method and application thereof
  • Automotive rubber material, preparation method and application thereof
  • Automotive rubber material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A rubber material for the hinged compression layer of an automobile torsion beam, the rubber material is prepared from the following raw materials in terms of parts by mass:

[0039]

[0040] The preparation method step of producing this rubber material is as follows:

[0041] 1) Preparation of natural rubber masterbatch:

[0042] Put 70 parts of natural rubber (national standard 10#) into the internal mixer, after mixing for 1 minute, add carbon black N339 (5 ​​parts) and carbon black N550 (5 parts), mix for 1 minute, add white carbon black 233 (3 parts) and coupling agent SI-69 (0.7 parts), after mixing for 0.5 minutes, lift the top plug to clean, continue to mix for 1 minute after cleaning, and then discharge the glue, not exceeding 150 °C.

[0043] 2) Preparation of Eucommia rubber masterbatch

[0044] Put Eucommia rubber (5 parts) into the internal mixer, after mixing for 1 minute, add carbon black N339 (5 ​​parts) and carbon black N550 (5 parts), mix for 1 mi...

Embodiment 2

[0057] A rubber material for vehicles, which is prepared from the following raw materials according to the parts by mass:

[0058]

[0059]

[0060] The preparation method step of producing this rubber material is as follows:

[0061] 1) Preparation of natural rubber masterbatch:

[0062] Put 85 parts of natural rubber (national standard 20#) into the internal mixer, after mixing for 1 minute, add carbon black N339 (25 parts), mix for 1 minute, add white carbon black 233 (8 parts) and coupling agent SI- 69 (0.8 parts), after mixing for 0.5 minutes, lift the top bolt to clean, continue to mix for 1 minute after cleaning, and then discharge the glue, not exceeding 150°C.

[0063] 2) Preparation of Eucommia rubber masterbatch

[0064] Put Eucommia rubber (15 parts) into the internal mixer, after mixing for 1 minute, add carbon black N339 (5 ​​parts), mix for 1 minute, add white carbon black 233 (2 parts) and coupling agent SI-69 (0.2 parts), after mixing for 0.5 minutes,...

Embodiment 3

[0075] A rubber material for vehicles, which is prepared from the following raw materials according to the parts by mass:

[0076]

[0077] The preparation method step of producing this rubber material is as follows:

[0078] 1) Preparation of natural rubber masterbatch: put 90 parts of natural rubber (national standard 10#) into the internal mixer, mix for 1 minute, add carbon black N339 (25 parts) and carbon black N550 (4 parts), and mix for 1 minute , add white carbon black 233 (6 parts) and coupling agent SI-69 (0.8 parts), after mixing for 0.5 minutes, lift the top plug to clean, continue mixing for 1 minute after cleaning, and then remove the glue, not exceeding 150 ° C.

[0079] 2) Preparation of Eucommia rubber masterbatch

[0080] Put 25 parts of eucommia rubber into the internal mixer, after mixing for 1 minute, add carbon black N339 (5 ​​parts) and carbon black N550 (1 part), mix for 1 minute, add white carbon black 233 (2 parts) and coupling Agent SI-69 (0.2 p...

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Abstract

The invention discloses an automotive rubber material, a preparation method and application thereof. The rubber material is prepared from the following raw materials in parts by weight: 70 to 110 parts of natural rubber, 5 to 45 parts of Eucommia ulmoides rubber, 20 to 60 parts of carbon black, 5 to 20 parts of white carbon black, 4 to 7 parts of a plasticizer, 1 to 5 parts of a coupling agent, 3to 8 parts of an anti-aging agent, 0.1 to 0.3 part of a scorch retarder, 5 to 7 parts of a vulcanizing activator, 1 to 1.5 parts of an accelerant and 2 to 4 parts of a vulcanizing agent. By using thecombination of natural rubber and Eucommia ulmoides rubber, the compound has the characteristics of excellent tensile strength, compressive strength, tension fatigue resistance, low heat generation rate and the like, and also has excellent flexural fatigue resistance.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a rubber material for automobiles and its preparation method and application. Background technique [0002] The automobile torsion beam hinge is mainly composed of a steel outer tube, a steel inner tube and a rubber layer in the middle. The steel outer tube is connected to the torsion beam, and the steel inner tube is connected to the metal bracket on the car body. The middle of the inner tube and the outer tube is filled with rubber. Used for connection and vibration damping between inner and outer pipes. Due to the long-term harsh working conditions of the automobile torsion beam hinge, the rubber material that acts as a vibration damper in the hinge is subject to long-term compression and large dynamic stress, and often fails due to dynamic fatigue during model development and customer use. Therefore, the rubber material used is required to have excellent flex fatigue res...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L91/06C08L91/00C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09C08K5/18C08K5/3437C08K5/548B29B7/00
Inventor 黄硕李明桓黄江玲
Owner DONGFENG MOTOR CORP HUBEI
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