Method for enhancing damping capacity of rubber by adding samarium-cobalt magnetic powder
A technology of samarium cobalt and magnetic powder, which is applied in the field of improving the damping performance of rubber by adding samarium cobalt magnetic powder, which can solve the problems of rising cost and declining magnetic performance, and achieve the effects of increasing energy conversion, increasing the effective damping temperature range, and improving damping performance
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[0027] Example 1
[0028] 1) 100 parts by mass of butyl rubber are masticated on an open mill, and then 50 parts by mass of carbon black reinforcing agent, 20 parts by mass of isotropic quick-quenched samarium cobalt magnetic powder with a particle size of 100 microns, and 2 parts by mass are sequentially added Sulfur, 5 parts by mass of zinc oxide, and 1.5 parts by mass of stearic acid are mixed for 5 minutes to obtain a mixture;
[0029] 2) Place the mixture in a mold, and then apply a pressure of 5 Pa to the mold, and keep it at 120°C for 30 minutes for vulcanization to obtain a vulcanized rubber;
[0030] 3) Place the vulcanized rubber under a 5T magnetic field for magnetization for 1 second to obtain a high-damping samarium-cobalt magnetic rubber.
[0031] Compared with ordinary butyl rubber, the maximum damping coefficient of samarium-cobalt magnetic rubber with 20 mass parts of magnetic powder at 50 is increased from 0.85 to 0.98, which is an increase of 15%, and the damping pe...
Example Embodiment
[0032] Example 2
[0033] 1) 100 parts by mass of nitrile rubber is masticated on a calender, and then 35 parts by mass of carbon black reinforcing agent, 120 parts by mass of anisotropic fast-quenched samarium cobalt magnetic powder with a particle size of 1 micron and 1.5 parts by mass of sulfur , 5 parts by mass of zinc oxide, 1 part by mass of stearic acid, kneaded for 5 minutes to obtain a mixture;
[0034] 2) Place the mixture in the mold, and then apply a pressure of 15 Pa to the mold, and keep it at 150°C for 10 minutes for vulcanization to obtain a vulcanized rubber;
[0035] 3) Place the vulcanized rubber under a 4T magnetic field for 5 seconds to obtain a high-damping samarium cobalt magnetic rubber.
[0036] Compared with ordinary butyl rubber, the maximum damping coefficient of samarium cobalt magnetic rubber with 60 mass parts of magnetic powder at 50 is increased from 0.84 to 1.05, an increase of 25%, and the damping performance is significantly improved.
Example Embodiment
[0037] Example 3
[0038] 1) 100 parts by mass of silicone rubber is masticated on a mixer, and then 50 parts by mass of white carbon black reinforcing agent, 60 parts by mass of isotropic injection-molded samarium cobalt magnetic powder with a particle size of 70 microns, and 0.8 parts by mass of sulfur are added in sequence. Mix for 15 minutes to obtain a mixture;
[0039] 2) Place the mixture in the mold, and then apply a pressure of 20 Pa to the mold, and keep it at 170°C for 20 minutes to vulcanize to obtain a vulcanized rubber;
[0040] 3) Place the vulcanized rubber under a 1.5T magnetic field for magnetization for 10 seconds to obtain a high-damping samarium-cobalt magnetic rubber.
[0041] Compared with ordinary silicone rubber, the maximum damping coefficient of samarium-cobalt magnetic rubber with 120 mass parts of magnetic powder at 50 is increased from 0.34 to 0.40, an increase of 18%, and the damping performance is significantly improved.
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