Ultra-high damping rubber composite material and preparation process of rubber composite material

Abstract

The invention belongs to the technical field of rubber and discloses an ultra-high damping rubber composite material and a preparation process of the rubber composite material. The preparation process disclosed by the invention is mainly technically characterized by comprising the following steps of: adding short fibers, carbon black, petroleum resin, a plasticizer, a vulcanizing agent, an active agent, an accelerant and an anti-aging agent in rubber; and mixing the components in an internal mixer and then vulcanizing in a flat vulcanizing machine. According to the ultra-high damping rubber composite material disclosed by the invention, a predetermined amount of short fibers, carbon black and petroleum resin are uniformly dispersed in a rubber matrix; compared with the common high-damping material, the damping coefficient of the ultra-high damping rubber composite material disclosed by the invention is increased by more than 20%; and the ultra-high damping rubber composite material disclosed by the invention has the advantages of being strong in energy consumption property and ductility and obvious in damping and shock insulating effects, effectively controlling the earthquake response of shock insulating structures, and being environment-friendly and stable in property. The stretching strength is greater under the condition with the same hardness, so that a rubber bearing prepared by the ultra-high damping rubber composite material disclosed by the invention is greater in bearing force; the whole size of the bearing is smaller than the size of the traditional high-damping rubber bearing; and the rubber bearing has the advantages of saving the use space, being convenient to construct and more excellent in resistance to fatigue performance.

Description

technical field

[0001] The invention belongs to the technical field of rubber, and in particular relates to an ultra-high damping rubber composite material and a preparation process thereof. Background technique

[0002] Bridge isolation devices are generally divided into three categories, namely laminated rubber isolation devices, sliding friction isolation devices, and combined devices of dampers and isolators. Among them, laminated rubber isolators are the most common. In the laminated rubber isolation device, the ordinary plate-type rubber bearing needs to be used in conjunction with the damper, and the damper is expensive, which limits its scope of use; the lead-core rubber bearing has good damping performance and production process Simple and widely used in bridge isolation design, but lead rubber bearings are prone to aging and cracking during use, and exposed lead cores will cause serious pollution to the surrounding environment, and the isolation frequency band of ...

Examples

Embodiment 1

[0038] The preparation technology of ultra-high damping rubber composite material of the present invention comprises the following steps:

[0039] Step 1 Preparation of unvulcanized ultra-high damping rubber composite

[0040] The first small step is to masticate 100 parts by weight of rubber and 15 parts by weight of petroleum resin in an internal mixer for 40 seconds;

[0041] In the second small step, add 4 parts by weight of active agent and 1 part by weight of anti-aging agent successively, mix for 30 seconds, add 20 parts by weight of carbon black, 5 parts by weight of plasticizer, continue mixing for 60 seconds, add 3 parts by weight of short fiber, Mixing for 20 seconds to remove glue; a section of masterbatch is placed for 8 hours;

[0042] The third small step is to put a section of masterbatch into the internal mixer, add 1 part by weight of vulcanizing agent and 1 part by weight of accelerator in sequence, mix for 30 seconds to remove the glue, and park the rubber...

Embodiment 2

[0046] The preparation technology of ultra-high damping rubber composite material of the present invention comprises the following steps:

[0047] Step 1 Preparation of unvulcanized ultra-high damping rubber composite

[0048] The first small step 100 parts by weight of rubber and 32.5 parts by weight of petroleum resin are masticated for 110 seconds in an internal mixer;

[0049] In the second small step, 6 parts by weight of active agent and 2 parts by weight of anti-aging agent were added successively, mixed for 75 seconds, 45 parts by weight of carbon black and 15 parts by weight of plasticizer were added, and mixed for 130 seconds, 9 parts by weight of short fibers were added, Mixing for 30 seconds to remove glue; a section of masterbatch is placed for 8 hours;

[0050] The third small step is to put a section of masterbatch into the internal mixer, add 2 parts by weight of vulcanizing agent and 2 parts by weight of accelerator in sequence, mix for 60 seconds to discharg...

Embodiment 3

[0054] The preparation technology of ultra-high damping rubber composite material of the present invention comprises the following steps:

[0055] Step 1 Preparation of unvulcanized ultra-high damping rubber composite

[0056] The first small step is to masticate 100 parts by weight of rubber and 50 parts by weight of petroleum resin in internal mixer for 180 seconds;

[0057] In the second small step, add 8 parts by weight of active agent and 3 parts by weight of anti-aging agent successively, mix for 120 seconds, add 70 parts by weight of carbon black, 25 parts by weight of plasticizer, continue mixing for 200 seconds, add 15 parts by weight of short fibers, Mixing for 40 seconds to remove glue; a section of masterbatch is placed for 8 hours;

[0058] The third small step is to put a section of masterbatch into the internal mixer, add 3 parts by weight of vulcanizing agent and 3 parts by weight of accelerator in sequence, mix for 90 seconds to discharge the glue, and park t...

technical field

[0001] The invention belongs to the technical field of rubber, and in particular relates to an ultra-high damping rubber composite material and a preparation process thereof. Background technique

[0002] Bridge isolation devices are generally divided into three categories, namely laminated rubber isolation devices, sliding friction isolation devices, and combined devices of dampers and isolators. Among them, laminated rubber isolators are the most common. In the laminated rubber isolation device, the ordinary plate-type rubber bearing needs to be used in conjunction with the damper, and the damper is expensive, which limits its scope of use; the lead-core rubber bearing has good damping performance and production process Simple and widely used in bridge isolation design, but lead rubber bearings are prone to aging and cracking during use, and exposed lead cores will cause serious pollution to the surrounding environment, and the isolation frequency band of ...

Examples

Embodiment 1

[0038] The preparation technology of ultra-high damping rubber composite material of the present invention comprises the following steps:

[0039] Step 1 Preparation of unvulcanized ultra-high damping rubber composite

[0040] The first small step is to masticate 100 parts by weight of rubber and 15 parts by weight of petroleum resin in an internal mixer for 40 seconds;

[0041] In the second small step, add 4 parts by weight of active agent and 1 part by weight of anti-aging agent successively, mix for 30 seconds, add 20 parts by weight of carbon black, 5 parts by weight of plasticizer, continue mixing for 60 seconds, add 3 parts by weight of short fiber, Mixing for 20 seconds to remove glue; a section of masterbatch is placed for 8 hours;

[0042] The third small step is to put a section of masterbatch into the internal mixer, add 1 part by weight of vulcanizing agent and 1 part by weight of accelerator in sequence, mix for 30 seconds to remove the glue, and park the rubber...

Embodiment 2

[0046] The preparation technology of ultra-high damping rubber composite material of the present invention comprises the following steps:

[0047] Step 1 Preparation of unvulcanized ultra-high damping rubber composite

[0048] The first small step 100 parts by weight of rubber and 32.5 parts by weight of petroleum resin are masticated for 110 seconds in an internal mixer;

[0049] In the second small step, 6 parts by weight of active agent and 2 parts by weight of anti-aging agent were added successively, mixed for 75 seconds, 45 parts by weight of carbon black and 15 parts by weight of plasticizer were added, and mixed for 130 seconds, 9 parts by weight of short fibers were added, Mixing for 30 seconds to remove glue; a section of masterbatch is placed for 8 hours;

[0050] The third small step is to put a section of masterbatch into the internal mixer, add 2 parts by weight of vulcanizing agent and 2 parts by weight of accelerator in sequence, mix for 60 seconds to discharg...

Embodiment 3

[0054] The preparation technology of ultra-high damping rubber composite material of the present invention comprises the following steps:

[0055] Step 1 Preparation of unvulcanized ultra-high damping rubber composite

[0056] The first small step is to masticate 100 parts by weight of rubber and 50 parts by weight of petroleum resin in internal mixer for 180 seconds;

[0057] In the second small step, add 8 parts by weight of active agent and 3 parts by weight of anti-aging agent successively, mix for 120 seconds, add 70 parts by weight of carbon black, 25 parts by weight of plasticizer, continue mixing for 200 seconds, add 15 parts by weight of short fibers, Mixing for 40 seconds to remove glue; a section of masterbatch is placed for 8 hours;

[0058] The third small step is to put a section of masterbatch into the internal mixer, add 3 parts by weight of vulcanizing agent and 3 parts by weight of accelerator in sequence, mix for 90 seconds to discharge the glue, and park t...

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