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Preparation method of fatigue-resistant rubber

A technology of anti-fatigue rubber and trans isoprene rubber, which is applied in the field of rubber, can solve the problems of increasing the service life of automobile suspension rubber, not being able to effectively play the role of suspension shock absorption, and permanent deformation of shock absorption suspension, etc., to achieve high Good physical properties and plasticity, good wear resistance and fatigue resistance, and low rolling resistance

Inactive Publication Date: 2019-11-01
LUSHAN COLLEGE OF GUANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The car suspension is connected to the car shock absorber and the car body. The suspension plays a role of shock absorption and buffering during the car movement. The fatigue life of the traditional pure natural rubber formula car suspension is generally 500,000 to 600,000 times (test conditions: load -1000~ 8500N, 3HZ), and the suspension is under long-term load, the shock-absorbing suspension is prone to permanent deformation, and it is prone to fatigue damage or large residual changes during the three-year warranty period (3 years or 10 kilometers) of the general car, which cannot be effective Play the role of suspension shock absorption; therefore, to prepare a test condition of load -1000 ~ 8500N, 3HZ, can greatly increase the service life of automobile suspension rubber, and reduce the cost of after-sales service is imminent

Method used

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  • Preparation method of fatigue-resistant rubber
  • Preparation method of fatigue-resistant rubber
  • Preparation method of fatigue-resistant rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method for fatigue-resistant rubber, comprising the steps of:

[0032] (1) Material preparation: According to the formula requirements, weigh in parts by weight: 80 parts of natural rubber, 10 parts of trans isoprene rubber, 10 parts of butadiene rubber, 5 parts of zinc oxide by indirect method, 2 parts of stearic acid, micro 2 parts of crystal wax, 2 parts of anti-aging agent RD, 5 parts of resin, 30 parts of carbon black, 10 parts of aromatic oil, 1 part of accelerator DM, 1 part of sulfur, spare;

[0033] (2) One-stage plastication: put natural rubber, butadiene rubber BR9000, and trans isoprene rubber into the feeding chamber through the feeding port and pass it into the mixing chamber, open the external temperature control cooling device to control the temperature: 90°C, and then adjust In the internal mixer, the rotor speed of the internal mixing chamber reaches 20rpm, and the top bolt is pressurized to 10MPa to start masticating, and the plasticizin...

Embodiment 2

[0038] A preparation method for fatigue-resistant rubber, comprising the steps of:

[0039] (1) Material preparation: According to the formula requirements, weigh in parts by weight: 60 parts of natural rubber, 30 parts of trans isoprene rubber, 10 parts of butadiene rubber, 4 parts of aluminum oxide, 4 parts of magnesium oxide, 2 parts of stearic acid 5 parts of refined paraffin, 5 parts of anti-aging agent 4010NA, 10 parts of resin, 60 parts of carbon black, 30 parts of 46# engine oil, 3 parts of accelerator CZ, 3 parts of sulfur, spare;

[0040] (2) One-stage plastication: put natural rubber, butadiene rubber BR9000, and trans isoprene rubber into the feeding chamber through the feeding port and pass it into the mixing chamber, open the external temperature control cooling device to control the temperature: 100°C, and then adjust The rotor speed of the internal mixing chamber in the internal mixer reaches 22rpm, and the top bolt is pressurized to 10MPa to start masticating,...

Embodiment 3

[0045] A preparation method for fatigue-resistant rubber, comprising the steps of:

[0046] (1) Material preparation: According to the formula requirements, weigh in parts by weight: 70 parts of natural rubber, 20 parts of trans isoprene rubber, 10 parts of butadiene rubber, 2 parts of zinc oxide by indirect method, 4 parts of magnesium oxide, stearin 2 parts of acid, 3 parts of anti-ozone wax, 2 parts of anti-aging agent RD and 2 parts of anti-aging agent 4010NA, 8 parts of resin, 45 parts of carbon black, 20 parts of paraffin oil, 1 part of accelerator DM and 1 part of accelerator CZ, 2 parts of sulfur, spare;

[0047] (2) One-stage plastication: Put natural rubber, butadiene rubber BR9000, and trans isoprene rubber into the feeding chamber through the feeding port and pass it into the mixing chamber, open the external temperature control cooling device to control the temperature: 95°C, and then adjust In the internal mixer, the rotor speed of the internal mixing chamber re...

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Abstract

The invention belongs to the technical field of rubber, and particularly relates to a preparation method of fatigue-resistant rubber, which comprises the following steps: (1) preparation of materials;(2) primary plastication; (3) secondary plastication; (4) rubber mixing; and (5) vulcanization: putting the rubber compound into a mold for vulcanization treatment, and pressurizing and preheating the mold for 5-10 minutes after the set temperature before each vulcanization treatment is reached, the vulcanization treatment conditions being 155 + / - 10 DEG C * 10-12 minutes, and the vulcanization pressure being 10-12 MPa, thereby finally obtaining the fatigue-resistant rubber. The rubber compound with low Mooney index and high processability can be obtained by adjusting the material selection and vulcanization system of the filling system and adopting a specific mixing method, the fatigue resistance of the automobile suspension rubber can be effectively improved, the suspension residual deformation is reduced, and the bonding strength of the rubber and an iron piece (insert) is improved. The rubber satisfies 800,000-900,000 times of test under the conditions that the load is 1000-8500Nat 3 Hz.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a preparation method of fatigue-resistant rubber. Background technique [0002] The car suspension is connected to the car shock absorber and the car body. The suspension plays a role of shock absorption and buffering during the car movement. The fatigue life of the traditional pure natural rubber formula car suspension is generally 500,000 to 600,000 times (test conditions: load -1000~ 8500N, 3HZ), and the suspension is under long-term load, the shock-absorbing suspension is prone to permanent deformation, and it is prone to fatigue damage or large residual changes during the three-year warranty period (3 years or 10 kilometers) of the general car, which cannot be effective Play the role of suspension shock absorption; therefore, to prepare a test condition of load -1000 ~ 8500N, 3HZ, can greatly increase the service life of automobile suspension rubber, and reduce the cost of af...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L91/06C08L101/00C08K13/02C08K3/04C08K3/06C08K5/09C08K3/22C08K5/18B29B7/74B29C35/02
CPCC08L7/00B29B7/7461B29C35/02C08L2205/035C08K2003/2296C08L9/00C08L91/06C08L101/00C08K13/02C08K3/04C08K3/06C08K5/09C08K3/22C08K5/18B29B7/823B29B7/286B29B7/183B29B7/7495
Inventor 潘宇倩覃朝兵梁航范才枝覃祖业林澎杨灵敏
Owner LUSHAN COLLEGE OF GUANGXI UNIV OF SCI & TECH
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