Preparation method of sound-absorbing rubber

A technology of rubber and nitrile rubber, which is applied in the field of rubber, can solve problems such as restricting automobile noise and noise control, and achieve good mechanical properties, high chemical stability, and good aging resistance

Inactive Publication Date: 2017-02-15
昆明云垦橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no rubber with good sound-absorbing properties that can be applied t

Method used

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  • Preparation method of sound-absorbing rubber

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[0014] The invention provides a method for preparing sound-absorbing rubber, which is characterized in that the method comprises: 100-150 parts by weight of nitrile rubber, 5-15 parts by weight of hollow glass microspheres, and 3-8 parts by weight of nanometer disulfide Molybdenum, 1-6 parts by weight of lanthanum oxide, 3-15 parts by weight of azodicarbonamide, 1-5 parts by weight of urea, 2-8 parts by weight of carbon nanotubes and 5-15 parts by weight of ternary ethyl The formula of propylene rubber puts the raw material of sound-absorbing rubber into an open mixer for mixing, and the mixed product is placed for 12-48 hours before re-milling, and the re-milled product is sent to a flat vulcanizing machine for pressure vulcanization and vulcanization in sequence. Pressure setting; preferably, the sound-absorbing rubber includes 120-140 parts by weight of nitrile rubber, 8-12 parts by weight of hollow glass microspheres, 4-6 parts by weight of nano molybdenum disulfide, 2-4 pa...

Embodiment 1

[0020] With the nitrile rubber of 100 parts by weight, the hollow glass microsphere of 5 parts by weight of 50 nanometers, the 2-thiol benzothiazole of 3 parts by weight, the lanthanum oxide of 1 part by weight, the azodicarbonamide of 3 parts by weight, 1 part by weight of urea, 2 parts by weight of carbon nanotubes and 5 parts by weight of EPDM rubber were placed in an open mill at 150°C for 3 minutes, and the product obtained by mixing was placed at 150°C for 12 hours. Re-smelting at 150° C. for 5 seconds at 5 MPa and 150° C. for pressure vulcanization on a flat vulcanizing machine. After depressurization to normal pressure, stabilize at 150° C. for 45 seconds to obtain Sound-absorbing rubber CL-1.

Embodiment 2

[0022] The nitrile rubber of 120 parts by weight, the hollow glass microspheres of 10 parts by weight of 200 nanometers, the dithiuram tetrasulfide of 5 parts by weight, the lanthanum oxide of 4 parts by weight, the azodicarbonamide of 8 parts by weight, the azodicarbonamide of 3 parts by weight 5 parts by weight of urea, 5 parts by weight of carbon nanotubes and 10 parts by weight of EPDM rubber were put into an open mill at 170°C and mixed for 10 minutes, and the product obtained by mixing was placed at 190°C for 24 hours. Remelting for 8 minutes, put the product obtained from the remilling into a flat vulcanizing machine, vulcanize under pressure at 10 MPa at 190°C for 20 seconds, release the pressure to normal pressure and stabilize at 190°C for 80 seconds to obtain sound-absorbing rubber CL-2.

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Abstract

The invention relates to a preparation method of sound-absorbing rubber, wherein the preparation method comprises the steps: according to the formula comprising 100-150 parts by weight of butadiene-acrylonitrile rubber, 5-15 parts by weight of hollow glass micro-beads, 3-8 parts by weight of nano molybdenum disulfide, 1-6 parts by weight of lanthanum oxide, 3-15 parts by weight of azodicarbonamide, 1-5 parts by weight of urea, 2-8 parts by weight of carbon nanotubes and 5-15 parts by weight of ethylene propylene diene monomer, adding the raw materials of the sound-absorbing rubber into an open mill, mixing, placing the product obtained from the mixing for 12-48 h, re-mixing, sending the product obtained from the re-mixing into a plate vulcanizing machine, and successively carrying out press vulcanization and press shaping. The sound-absorbing rubber has the advantages of good sound-absorbing performance, and large tensile strength.

Description

technical field [0001] The invention specifically relates to the field of rubber, and more specifically, relates to a preparation method of sound-absorbing rubber. Background technique [0002] With the rapid development of the economy, the number of automobiles is increasing day by day. As an important component of automobiles, the demand for tires is also increasing year by year, so the noise caused by tires will receive great attention and attention. At present, there is no rubber with good sound-absorbing properties that can be applied to tires, which seriously restricts the noise control to prevent car noise from the source. Contents of the invention [0003] In order to solve the above problems in the prior art, the present invention provides a method for preparing sound-absorbing rubber. The sound-absorbing rubber has excellent sound-absorbing performance and high tensile strength. [0004] The technical scheme adopted in the present invention is: [0005] A metho...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L23/16C08K13/04C08K7/28C08K3/30C08K3/22C08K7/24C08K5/23C08K5/21
CPCC08K2201/003C08K2201/011C08L9/02C08L23/16C08K13/04C08K7/28C08K2003/3009C08K2003/221C08K7/24C08K5/23C08K5/21
Inventor 李谨宏陈春明蒋立地
Owner 昆明云垦橡胶有限公司
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