Wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber preparation method

An EPDM rubber and high damping technology, which is applied in the field of rubber preparation, can solve problems such as endangering safety, reducing operation accuracy, and uncontrollability, and achieves good processing performance and model fluidity, increased temperature range, and mixing Colloidal soft effect

Active Publication Date: 2013-02-20
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of modern industry, vibration and noise have become serious problems in various fields: it will reduce the operating accuracy and affect product quality; it will shorten the life of the product, making high-precision instruments unable to work normally; endangering safety, making equipment or structures Early damage; pollute the environment and affect human health, such as earthquakes and other shocks even cause great damage to human life and property
[0006] However, the glass transition temperature range of general homopolymers is relatively narrow, and the temperature range for effective damping is about ±10-15°C of the glass transition temperature (Tg). The use temperature range of the material is narrow and uncontrollable, so it cannot well meet the needs of actual use

Method used

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  • Wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber preparation method
  • Wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber preparation method
  • Wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of EPDM rubber with wide temperature range and high damping, comprising the steps of:

[0022] (1) The wide temperature range high damping EPDM rubber is composed of the following raw materials in parts by weight: EPDM rubber 100, dicumyl peroxide 3, zinc oxide 3, stearic acid 1;

[0023] (2) Add the raw materials in the above parts by weight into a torque rheometer, mix for 10 minutes at a temperature range of 100°C, and rotate at a speed of 100 rpm to obtain a mixed rubber;

[0024] (3) Put the above mixed rubber for 24 hours, then put it on a flat vulcanizer, and press it for 11 minutes under the temperature range of 160 ° C and 11 MPa pressure to obtain the required wide temperature range and high damping EPDM rubber;

[0025] A 2mm thick cuboid sample was prepared, and the dynamic mechanical test was carried out using a dynamic mechanical analyzer (DMA). Test conditions: frequency 5Hz, temperature -80°C to 200°C, heating rate 2°C / min, tensile...

Embodiment 2

[0027] (1) The wide temperature range high damping EPDM rubber is composed of the following raw materials in parts by weight: EPDM rubber 100, dicumyl peroxide 3, zinc oxide 3, stearic acid 1;

[0028] (2) Add the raw materials in the above parts by weight into a torque rheometer, mix for 10 minutes at a temperature range of 100°C, and rotate at a speed of 100 rpm to obtain a mixed rubber;

[0029] (3) Put the above mixed rubber for 24 hours, then place it on a flat vulcanizing machine, under the temperature range of 160 ℃, under the pressure of 11MPa and hot press for 2 minutes, you can get the required wide temperature range and high damping ternary B Propylene rubber;

[0030] A 2mm thick cuboid sample was prepared, and the dynamic mechanical test was carried out using a dynamic mechanical analyzer (DMA). Test conditions: frequency 5Hz, temperature -80°C to 200°C, heating rate 2°C / min, tensile mode, test results see figure 2 . The loss peak area (TA) is used to measure ...

Embodiment 3

[0032] (1) The wide temperature range high damping EPDM rubber is composed of the following raw materials in parts by weight: EPDM rubber 100, dicumyl peroxide 3, zinc oxide 3, stearic acid 1;

[0033] (2) Add the raw materials in the above parts by weight into a torque rheometer, mix for 10 minutes at a temperature range of 100°C, and rotate at a speed of 100 rpm to obtain a mixed rubber;

[0034] (3) Park the above compounded rubber for 24 hours, then place it on a flat vulcanizing machine, under-vulcanize and hot press for 5 minutes under the temperature range of 160°C and 11MPa pressure, and the required wide temperature range and high damping EPDM can be obtained rubber;

[0035] A 2mm thick cuboid sample was prepared, and the dynamic mechanical test was carried out using a dynamic mechanical analyzer (DMA). Test conditions: frequency 5Hz, temperature -80°C to 200°C, heating rate 2°C / min, tensile mode, test results see image 3 . The loss peak area (TA) is used to meas...

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Abstract

The present invention discloses a wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber preparation method. The wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber comprises the following raw materials: ethylene-propylene-diene-terpolymer rubber, dicumyl peroxide, zinc oxide and stearic acid. According to the present invention, reasonable matching of various raw materials is adopted, such that the rubber is easily mixed, and the obtained mixing rubber has characteristics of softness, good processing property and good model fluidity; and an undervulcanization technology means is adopted to increase a temperature range of the damping EPDM, and a damping performance of the damping material can be adjusted by changing the undervulcanization degree so as to meet different requirements.

Description

technical field [0001] The invention mainly relates to a method for preparing rubber, in particular to a method for preparing EPDM rubber with a wide temperature range and high damping. Background technique [0002] With the rapid development of modern industry, vibration and noise have become serious problems in various fields: it will reduce the operating accuracy and affect product quality; it will shorten the life of the product, making high-precision instruments unable to work normally; endangering safety, making equipment or structures Early damage; pollute the environment and affect human health, such as earthquakes and other shocks even cause great damage to human life and property. Therefore, the research and mastery of vibration control and noise control technology has become a major issue facing the industrial development of various countries. [0003] The most fundamental and best way to eliminate vibration and noise is to reduce or eliminate the vibration of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K5/14C08K3/22C08K5/09B29C35/02
Inventor 顾振张献田兴友包超薛萌王欢
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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