Low-hardness high-damping rubber composition and preparation method thereof
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A rubber composition and high damping technology, applied in the field of rubber, can solve the problems of poor ozone resistance and brittleness, and achieve the effects of improving roll wrapping, increasing intermolecular friction, and avoiding unmixed uniformity
Active Publication Date: 2014-04-16
GREAT WALL MOTOR CO LTD
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However, because nitrile rubber contains acrylonitrile, which is a polar group, it is easy to crystall
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[0062] Example 1 A kind of low hardness high damping rubber composition and preparation method thereof
[0063] A low-hardness high-damping rubber composition, which comprises the following components:
[0064] 90g of polynorbornene rubber, 10g of butyl rubber, 5.0g of zinc oxide, 0.8g of stearic acid, 40g of Subofer S503 lamellar modified clay;
[0066] Accelerator CBS 4.5g, Accelerator EZ 1.0g, Sulfur 2.0g;
[0067] Wherein, the molecular weight of the polynorbornene rubber is 3,000,000 g / mol.
[0068] The preparation method of described polynorbornene rubber is carried out according to the following sequence of steps:
[0069] ① Raise the temperature of the mill to 100°C;
[0070] ②Preheat 100 parts of polynorbornene rubber preheated to 140°C for 20 minutes, mix in an open mill at 100°C, set the temperature at 120°C, and adjust the roller distance to 0.3mm;
[0071] ③ Add 150 parts o...
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[0089] Embodiment 2-6 Low hardness and high damping rubber composition and preparation method thereof
[0090] Examples 2-6 are respectively a low-hardness and high-damping rubber composition and a preparation method thereof.
[0091] The difference between embodiment 2-6 and embodiment 1 is only that its component content is different, specifically as shown in the following table:
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Abstract
The invention discloses a low-hardness high-damping rubber composition and a preparation method thereof. According to the composition, butyl rubber and polynorbornene rubber are used together, so that the damping application range of the material is widened, the application temperature is from 40 DEG C below zero to 80 DEG C, and the heat resistance and ozone resistance of the material are improved to a certain degree. A wide-temperature range, low-hardness and high-damping material is prepared through blending, the application range of the damping material is improved, especially a high-damping effect at room temperature is achieved, the rebound rate of vulcanized rubber at room temperature is less than 1 percent, and 90 percent of kinetic energy is converted into heat energy, so that an effect of maximizing the damped oscillation is achieved. The rubber composition disclosed by the invention can be widely applied to the fields of buildings, automobiles and high-precision instruments so as to achieve the damping aim.
Description
technical field [0001] The invention belongs to the field of rubber and relates to a rubber composition, in particular to a low-hardness high-damping rubber composition and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the development of society, the control of vibration and noise has become a very important engineering technology issue, and has been paid more and more attention by researchers from all over the world. Various methods of controlling vibration and noise have been widely used in the fields of machinery, electronics, aviation and aerospace. [0003] Among the various engineering vibration control technical measures developed and researched at present, damping vibration reduction is an effective method. Taking the automobile industry as an example, the use of shock-absorbing rubber materials has greatly improved the comfort, stability and safety of automobiles. Now, many new materials and technolo...
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