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Rubber material, and preparation method and use thereof

A technology of rubber materials and natural rubber, which is applied in the field of its preparation and rubber materials, can solve problems such as poor mechanical strength, high damping coefficient, and short service life

Inactive Publication Date: 2017-07-11
JIANGSU LUOSHI DAMPING MEMBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the poor mechanical strength, poor elastic ductility, high damping coefficient and relatively narrow frequency range of vibration isolation in the prior art. , for the defects of poor NVH control efficiency, short service life, and poor high temperature resistance of traditional natural rubber compositions during the acceleration phase of multi-cylinder engine vehicles, a rubber material, its preparation method and use are provided

Method used

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  • Rubber material, and preparation method and use thereof
  • Rubber material, and preparation method and use thereof
  • Rubber material, and preparation method and use thereof

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Embodiment 1～6、 comparative example 1～2

[0092] The following table 1 is the raw material formula in each embodiment, wherein " / " indicates that this component is not added. Wherein Comparative Example 1 is a commonly used silicone rubber composition material for the tail end lug of an exhaust pipe, and Comparative Example 2 is a commonly used ethylene-propylene rubber composition material for an exhaust pipe tail end lug.

[0093] Table 1

[0094]

[0095]

[0096] Preparation:

[0097] The following steps are prepared in conjunction with the condition parameters in Table 2;

[0098] Step 1) Pre-masticate the natural rubber with a internal mixer, and use an open mixer to produce a sheet with a thickness of 3mm, and use it within 4-12 hours; Kneading to obtain mixture A;

[0099] Step 2) Continue to put the activator zinc oxide, the stearic acid, the diaryl secondary amine anti-aging agent, the dihydroquinoline anti-aging agent, the physical anti-aging agent and the Said silane coupling agent is mixed to ob...

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Abstract

The invention discloses a rubber material, and a preparation method and a use thereof. The rubber material comprises natural rubber, butadiene rubber, a diaryl secondary amine antioxidant, a dihydroquinoline antioxidant, a physical antioxidant, an activator zinc oxide, stearic acid, a silane coupling agent, carbon black, sulfur, 4,4'-dithiodimorpholine, tetramethylthiuram disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and an anti-scorching agent. The rubber material has the advantages of low damping coefficient, good mechanical strength, good elastic ductility and satisfactory temperature resistance. The preparation method of the rubber material has the advantages of simple steps, convenience in operation, and suitableness for industrial production. An exhaust system cold end hanger made of the rubber material has the advantages of large pulling strength, long service life, wide vibration isolation frequency, and excellent NVH control efficiency in the acceleration stage in the high speed (90 km / h or more) driving process of an automobile.

Description

technical field [0001] The invention specifically relates to a rubber material, its preparation method and application. Background technique [0002] Exhaust system is one of the important components of modern automobiles, which plays an important role in purifying exhaust emissions and absorbing engine exhaust excitation noise. As a load-bearing and vibration-isolation component of the exhaust system, the lifting lug suspends the exhaust system and isolates the transmission of vibration excitation from it to the body. The basic properties of the lifting lug include: reasonable dynamic and static stiffness; high enough breaking force and service life; sufficient temperature range. The manufacturing materials of the lifting lugs are mostly silicone rubber and EPDM rubber. Silicone rubber has a silicon-oxygen chain structure and has extremely high and low temperature resistance. The working temperature range is -60 to 300°C, and it is especially suitable for the high tempera...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L91/06C08K13/02C08K3/04C08K3/06C08K5/378C08K5/40C08K5/47
CPCC08L7/00C08L2201/08C08L2205/03C08L9/00C08L91/06C08K13/02C08K3/04C08K3/06C08K5/378C08K5/40C08K5/47
Inventor 黄开军
Owner JIANGSU LUOSHI DAMPING MEMBER CO LTD
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