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A kind of composite damping material and its application in isolation bearing

A technology of composite damping materials and bearings, which is applied in the direction of shockproof, bridges, bridge parts, etc., can solve problems such as occupational health risks and environmental pollution, and achieve the effects of uncomplicated formula, reduced production cost, and simple preparation process

Active Publication Date: 2018-12-21
CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw material metal lead used in lead cores will cause environmental pollution and occupational health risks during the processing and product use stages.

Method used

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  • A kind of composite damping material and its application in isolation bearing
  • A kind of composite damping material and its application in isolation bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The specific preparation process of the composite damping material and shock-isolation rubber bearing in this example is as follows

[0039] 1) Preparation of composite damping material: Weigh 100 parts of cross-linked rubber, 150 parts of aluminum powder, and 80 parts of processing aids (processing aids include: 100 parts of raw rubber, 150 parts of aluminum powder, 5 parts of zinc oxide , 2 parts of stearic acid, 30 parts of operating oil, 5 parts of anti-aging agent, 3 parts of sulfur, 30 parts of carbon black, 5 parts of dispersant), according to the conventional process of rubber product production: in an open mill or an internal mixer The above materials are kneaded to make them uniformly dispersed to obtain the mixed rubber, which is the composite damping material.

[0040] 2) Preparation of the vibration-isolation rubber bearing: Fill the above-mentioned composite damping material into the forming mold, put it on a press and press it to form a core rod of the co...

Embodiment 2

[0042] The specific preparation process of the composite damping material and shock-isolation rubber bearing in this example is as follows

[0043] 1) Preparation of composite damping material: Weigh 100 parts of cross-linked rubber, 200 parts of aluminum powder, and 50 parts of processing aid (processing aid includes: 100 parts of raw rubber, 150 parts of aluminum powder, 5 parts of zinc oxide , 2 parts of stearic acid, 30 parts of operating oil, 5 parts of anti-aging agent, 3 parts of sulfur, 30 parts of carbon black, 5 parts of dispersant), according to the conventional process of rubber product production: in an open mill or an internal mixer The above materials are kneaded to make them uniformly dispersed to obtain the mixed rubber, which is the composite damping material.

[0044] 2) Preparation of the vibration-isolation rubber bearing: Fill the above-mentioned composite damping material into the forming mold, put it on a press and press it to form a core rod of the com...

Embodiment 3

[0046] The specific preparation process of the composite damping material and shock-isolation rubber bearing in this example is as follows

[0047] 1) Preparation of composite damping material: Weigh 100 parts of non-crosslinked rubber, 30 parts of iron powder, and 10 parts of processing aid (processing aid includes: 100 parts of raw rubber, 150 parts of aluminum powder, 5 parts of zinc oxide 2 parts, 2 parts of stearic acid, 30 parts of operating oil, 5 parts of anti-aging agent, 3 parts of sulfur, 30 parts of carbon black, 5 parts of dispersant), according to the conventional production process of rubber products: in open mill or internal mixer Mix the above materials in the medium to make them uniformly dispersed to obtain the mixed rubber, which is the composite damping material.

[0048] 2) Preparation of shock-isolation rubber bearing: Fill the above-mentioned composite damping material, together with the steel plate and rubber of the vulcanized bearing, into the forming...

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Abstract

The invention provides a composite damping material, and belongs to the technical field of bridge and building shock isolation bearers. The damping material is prepared by mixing and kneading raw materials including a high viscosity elastomer and aluminum powder or iron powder, wherein a part ratio of the high viscosity elastomer to the aluminum powder or the iron powder is 100:(30-300). The invention also provides an application of the composite damping material in a shock isolation bearer. The composite damping material is prepared through mixing the high viscosity elastomer with the iron powder and / or the aluminum powder, a laminated rubber bearer is filled with the composite damping material, and the friction energy consumption characteristic of the iron powder / the aluminum powder in a core material is used to obtain the shock isolation rubber bearer having a damping characteristic, and the shock isolation rubber can substitute a lead core shock isolation rubber bearer and is more environmentally-friendly. The core material made of the composite damping material has a lower hardness than rubber, and cannot be squeezed between a bearer steel plate and the rubber under the repeated shear action of earthquake, and the damping characteristic is slightly affected by the shear repeating frequency, and is stable.

Description

technical field [0001] The invention belongs to the technical field of bridge and building shock-isolation bearings, in particular to a composite damping material and its application in seismic-isolation bearings. Background technique [0002] At present, in China, a large number of lead core isolation rubber bearings are used in the isolation of bridges and buildings. The lead core isolation rubber bearings dissipate seismic energy through the "recrystallization" performance of lead metal to provide damping performance. However, the raw material metal lead used in lead cores will cause environmental pollution and occupational health risks during the processing and product use stages. From the perspective of the country's long-term requirements for environmental protection and occupational health, we should find a non-polluting damping material to replace the lead core as soon as possible. Under the earthquake state, after repeated shearing, the lead core will be squeezed b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L19/00C08L21/00C08K13/02C08K3/08E04H9/02E04B1/98E01D19/04
CPCC08K2003/0812C08K2003/0856C08K2201/003C08K2201/014C08L19/003C08L21/00C08L2205/03E01D19/041E04H9/022C08L91/00C08K13/02C08K3/08
Inventor 游珏涛黄杰谭丽容沈永泽张松俞海敏王润滋
Owner CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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