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Epdm rubber composition for a muffler hanger with high thermal resistance and low dynamic ratio

A rubber composition and muffler technology, applied in mufflers, engine components, machines/engines, etc., can solve the problems of poor vibration isolation performance and driving area, improve physical properties and heat resistance conditions, etc., to improve vibration isolation performance and Heat resistance, reduction of customer complaints, improvement of physical properties

Inactive Publication Date: 2015-08-19
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although the above-mentioned developments provide rubber compositions with improved physical properties by mixing technology using EPDM substances, early vibration isolation performance and driving territories may be poor, and improvements in physical properties such as heat resistance conditions are limited

Method used

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  • Epdm rubber composition for a muffler hanger with high thermal resistance and low dynamic ratio
  • Epdm rubber composition for a muffler hanger with high thermal resistance and low dynamic ratio
  • Epdm rubber composition for a muffler hanger with high thermal resistance and low dynamic ratio

Examples

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Effect test

Embodiment 1 to 4 and comparative example 1 to 2

[0055] Using the materials listed in Table 1 and according to the composition described in Table 2, each EPDM rubber composition for a muffler hanger was prepared.

[0056] Here, a first EPDM comprising ethylene in an amount of about 70% by weight, diene in an amount of about 5% by weight, and oil in an amount of about 50% by weight was used. A second EPDM comprising an ethylene content of about 60% by weight, a diene content of about 5% by weight and no oil was used.

[0057] In Examples 1 to 4, each composition was prepared by mixing the first and second EPDMs in a weight ratio of about 8:2. In Comparative Example 1, only the first EPDM (type 1) was used as a raw material. In Comparative Example 2, a composition was prepared using the first and second EPDMs in a weight ratio of about 6:4.

[0058] As shown in Table 2, when the first EPDM includes oil in an amount of about 50% by weight, the content of pure rubber substances in the first EPDM corresponds to 50% by weight of...

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Abstract

Provided is an ethylene propylene diene monomer (EPDM) rubber composition for a muffler hanger with high thermal resistance and low dynamic ratio, thereby improving mechanical properties. The EPDM rubber composition of the present invention is prepared by blending two heterogeneous EPDMs having different EPDM rubber composition.

Description

technical field [0001] The invention relates to an ethylene-propylene-diene-diene (EPDM) rubber composition for muffler hangers with high heat resistance and low dynamic ratio. In particular, the EPDM rubber composition for a muffler hanger having high heat resistance and low dynamic ratio may have various improved properties or improved mechanical properties obtained by mixing two types of EPDM which may have heterogeneous properties. Background technique [0002] Muffler hangers for vehicles provide improved driving comfort by reducing vibration and noise generated in the underbody. [0003] However, as customers' demand for high-power vehicles increases, there is an increasing demand for gasoline direct injection (GDI) and turbo engine vehicles, and such vehicle engines may cause an increase in the ambient temperature of components around the exhaust system. Elevated exhaust system temperatures can accelerate the curing of the muffler hanger rubber unit and further cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09C08K5/40C08K5/14C08K5/47
CPCC08L2201/08C08L2205/03C08L2205/025C08L23/16C08K13/02C08K3/04C08K3/06C08K2003/2296C08K5/09C08K5/40C08K5/14C08K5/47C08L2312/00C08F210/18F01N13/08
Inventor 金浩东
Owner HYUNDAI MOTOR CO LTD