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Natural rubber composition material as well as preparation method and application thereof

A technology of natural rubber and composition, which is applied to natural rubber composition material and its preparation and application fields, can solve the problems of high frequency isolation and long service life, etc.

Inactive Publication Date: 2018-09-04
JIANGSU LUOSHI DAMPING MEMBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the materials used for engine mounts at this stage cannot simultaneously satisfy dynamic-to-static ratio below 1.4, mechanical strength not less than 24MPa, high-temperature creep of less than 3mm at 85°C for 168 hours (loading is equivalent to the force value of its shared engine load), and high-frequency Good shock isolation and long service life

Method used

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  • Natural rubber composition material as well as preparation method and application thereof
  • Natural rubber composition material as well as preparation method and application thereof
  • Natural rubber composition material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6、 comparative example 1 and comparative example 2

[0095] Table 1

[0096]

[0097]

[0098] "-" in Table 1 indicates that the dosage is "0".

Embodiment 1～6

[0100] Embodiments 1 to 6, the raw material components of each embodiment in Table 1 are obtained according to the following preparation steps to obtain the product of each embodiment (the parameters of each step are as shown in Table 2):

[0101] (1) the natural rubber is masticated in advance with a internal mixer, and the sheet is produced with an open mixer, the thickness of the sheet is 3mm, and it is used within 4-12 hours; the natural rubber and butadiene rubber are mixed with an internal mixer to obtain a mixture A;

[0102] (2) Continue to input activator zinc oxide, magnesium oxide, stearic acid, anti-aging agent, protective wax, tackifier mixing to internal mixer, get mixture B;

[0103] (3) continue to drop into internal mixer carbon black N774, precipitated white carbon black, plasticizer mixing, carry out deglue afterwards, sheet, obtain rubber premixed glue;

[0104] (4) Put the rubber premixed rubber to rest, then put the rubber premixed rubber after standing s...

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Abstract

The invention discloses a natural rubber composition material as well as a preparation method and application thereof. A raw material composition of the natural rubber composition material is preparedfrom the following components according to the parts by weight: 85-92 parts of natural rubber, 8-15 parts of butadiene rubber, 4-10 parts of activator A, 0.5-2 parts of activator B, 2-6 parts of anti-aging agent, 2-4 parts of protective wax, 1-3 parts of tackifier, 10-25 parts of carbon black, 3-8 parts of white carbon black, 1-1.4 parts of vulcanizing agent, 0.1-0.4 parts of accelerant A, and 1.2-2.5 parts of accelerant B. The natural rubber composition material prepared from the invention is low in damping coefficient, and excellent in mechanical property, and capable of improving the fatigue radiating feature of the material, relieving the fracture and damage of a rubber chain caused by the fatigue rapid heating, improving the durability life, improving the high temperature resistancefeature of the vulcanized rubber, and reducing the high temperature creep deformations of the vulcanized rubber. A prepared automobile engine suspension damping material NVH has the good control effect, and the service life of a road test reaches the standard.

Description

technical field [0001] The invention specifically relates to a natural rubber composition material and its preparation method and application. Background technique [0002] The piston movement of the engine, the torsional power transmission of the camshaft, etc. will generate noise, vibration and harshness excitation (commonly referred to as NVH in the field, namely Noise, Vibration, Harshness), that is, the engine itself is a source of vibration. The vibration of the engine is transmitted to the subframe and the car body through the engine mount, resulting in poor ride comfort. In addition, the engine is still a heating body, and its surrounding temperature is relatively high. As a support and vibration isolation function, the engine mount must meet the following functions: first, it can bear static and dynamic loads under all working conditions, and make the displacement of the engine assembly (ie engine) in all directions acceptable range, without interfering with the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L91/06C08K13/02C08K3/04C08K3/36C08K5/09C08K5/47C08K3/22
CPCC08K2003/2296C08L7/00C08L2201/08C08L2205/025C08L2205/035C08L9/00C08L91/06C08K13/02C08K3/04C08K3/36C08K5/09C08K5/47C08K3/22
Inventor 黄开军刘军周欣欣
Owner JIANGSU LUOSHI DAMPING MEMBER CO LTD
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