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Natural rubber anti-vibration pad material and preparation method thereof

A technology of natural rubber and vibration damping pad, applied in the field of rubber materials, can solve the problems of affecting the vibration damping effect, large compressive stress, and the rubber is not resistant to ozone, etc., and achieves the suppression of the change of the cross-linking form, the low compression deformation rate, and the vulcanization speed. accelerated effect

Inactive Publication Date: 2016-11-23
安徽华润仪表线缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the vibration damping pad is relatively affected by the environmental climate because it is often exposed to the air.
At the same time, with the movement of the car, great pressure will be generated on the radial surface of the damping plate, which will easily cause deformation, aging or even cracking of the damping pad, thereby affecting the damping effect and causing the vehicle to vibrate. Even frequent replacement of shock absorbing pads will increase the cost and cause inconvenience to users
At the same time, the vibration damping pad made of rubber is easy to crack due to the heat generated by friction during use, which is not conducive to the service life of the rubber vibration damping pad.
[0004] Most of the vibration damping pads in the existing technology are made of neoprene or styrene-butadiene rubber or cis-butadiene rubber. The hardness of the rubber is relatively high, the compressive stress is relatively large, and the shock-absorbing effect is poor.
Because the above-mentioned rubber is not resistant to ozone and weather, and has poor compression set performance, poor aging resistance and weak vibration damping performance, it is difficult to apply to special working conditions.
For this reason, need a kind of rubber damping cushion that can solve the above-mentioned problem, and how to develop a kind of rubber damping cushion and preparation method thereof, make the damping buffer hardness of this damping cushion moderate, intensity is high, elongation rate is big , ozone aging resistance, weather aging resistance, moderate compressive stress value, in order to improve the balance, comfort and durability of automobile driving, this has become a technical problem to be solved urgently in this technical field

Method used

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  • Natural rubber anti-vibration pad material and preparation method thereof
  • Natural rubber anti-vibration pad material and preparation method thereof
  • Natural rubber anti-vibration pad material and preparation method thereof

Examples

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preparation example Construction

[0034] In the specific implementation process, refer to figure 1 , the preparation method of above-mentioned natural rubber damping cushion material comprises the steps:

[0035] S1. Put the natural rubber into the internal mixer and masticate evenly, then add light calcium, stearic acid, anti-aging agent, accelerator, vulcanization aid, carbon black, coumarone resin, and process oil in sequence, and mix evenly. Discharging, cooling to obtain masterbatch;

[0036] S2, put the masterbatch obtained in S1 into the open mill, add sulfur, mix evenly, release the sheet, cool, and obtain the final rubber mix;

[0037] S3. Put the final mixed rubber obtained in S2 into a mold of a vulcanizer, vulcanize, cool to room temperature after vulcanization, and demould to obtain the butadiene natural rubber vibration damping pad material.

Embodiment 1

[0040] A kind of natural rubber damping cushion material, its raw material comprises by weight:

[0041]

[0042]

[0043] Wherein, the chloroprene rubber of 6% weight percent is also contained in the described natural rubber; The paraffin content in paraffin oil is 70%, aromatic hydrocarbon content is 3%, naphthene 26%; The kinematic viscosity at 100 ℃ is 5mm 2 / s.

[0044] In the present embodiment 1, the preparation method of above-mentioned natural rubber damping cushion material comprises the steps:

[0045] S1. Put the natural rubber into the internal mixer and masticate at 80°C for 45 minutes, then add light calcium, stearic acid, anti-aging agent, accelerator, vulcanization aid, carbon black, coumarone resin, and process oil in sequence, Mix at 90°C for 25 minutes, discharge, and cool to obtain masterbatch;

[0046] S2. Put the masterbatch obtained in S1 into an open mill, add sulfur, knead at 40°C for 20 minutes, release the sheet, and cool to obtain the final...

Embodiment 2

[0049] A kind of natural rubber damping cushion material, its raw material comprises by weight:

[0050]

[0051] Wherein, the natural rubber contains 8% by weight of butadiene rubber; the paraffin content in the paraffin oil is 65%, the aromatic content is 8%, and the cycloalkane is 25%; the kinematic viscosity at 100°C is 20mm 2 / s.

[0052] In the present embodiment 2, the preparation method of above-mentioned natural rubber damping cushion material comprises the steps:

[0053] S1. Put the natural rubber into the internal mixer and masticate at 100°C for 35 minutes, then add light calcium, stearic acid, anti-aging agent, accelerator, carbon black, coumarone resin, and operating oil in sequence, and heat at 110°C Mixing for 15min, discharging, and cooling to obtain masterbatch;

[0054] S2. Put the masterbatch obtained in S1 into an open mill, add sulfur, knead at 60°C for 10 minutes, release the sheet, and cool to obtain the final batch;

[0055] S3. Put the final mi...

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Abstract

The invention discloses a natural rubber vibration damping pad material. The raw materials include: natural rubber, 19-28 parts; carbon black, 7-12 parts; light calcium, 6-13 parts; stearic acid, 0.2-13 parts by weight. 0.5 part; anti-aging agent, 0.1‑0.3 part; sulfur, 0.1‑0.3 part; accelerator, 0.3‑0.5 part; vulcanization aid, 0‑0.1 part; coumarone resin, 0.5‑1 part; process oil, 3‑ 7 servings. The natural rubber vibration-damping pad material has good vibration-damping effect and excellent weather resistance, and at the same time has high radial strength, moderate hardness, good elasticity and long service life. The invention also discloses a preparation method of the natural rubber damping pad material.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a natural rubber damping pad material and a preparation method thereof. Background technique [0002] Vibration-absorbing rubber products are often used in industrial production sectors such as railway transport vehicles, automobiles, machinery, etc., which absorb or reduce the vibration generated by movement through the high damping effect of the product, so as to achieve the purpose of shock absorption. Vibration-absorbing pads are the most common vibration-damping rubber products. For example, when an automobile engine is working, the reciprocating motion of the piston in the cylinder, the combustion of fuel in the cylinder, and the movement of other moving parts with the piston rod will cause the engine to vibrate violently. If the engine is directly connected to the chassis, the chassis will also vibrate, affecting the handling and comfort of the car. The vibration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/02C08K3/04C08K3/26C08K5/09C08K3/06C08L45/02C08K5/40C08L11/00C08J3/24
Inventor 丁云龙丁筱军
Owner 安徽华润仪表线缆有限公司
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