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High-performance rubber composite for bridge damping support and preparation method thereof

A technology of shock-absorbing bearings and composite materials, which is applied in bridges, bridge parts, bridge construction, etc., can solve the problems of elasticity and flexibility that cannot meet the ideal requirements, and low damping ratio, so as to achieve good comprehensive shock-absorbing effect and improve damping performance , The effect of widening the damping temperature range

Active Publication Date: 2016-02-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that its elasticity and flexibility cannot meet the ideal requirements, and its damping ratio is lower than that of lead rubber bearings.
Lead rubber bearings are widely used in bridge structures due to their excellent damping performance. Considering that the laminated rubber is made of highly elastic and flexible natural rubber, and the core material is made of composite materials with excellent damping performance, the lead core is replaced. , the rubber bearing made still has high elasticity, high flexibility, high strength performance, and has excellent performance at the same time. There are few reports in the literature about the substitute material of lead core

Method used

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  • High-performance rubber composite for bridge damping support and preparation method thereof
  • High-performance rubber composite for bridge damping support and preparation method thereof
  • High-performance rubber composite for bridge damping support and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Laminated rubber (clay glue No. 1 contains 100 parts of natural rubber and 5 parts of organic clay) composite materials were prepared according to Table 1. Concrete preparation process is as follows:

[0025] Laminated rubber preparation process - Weigh 105 parts of clay glue No. 1 and masticate 7 times on the open mill (roller distance 0.5mm); control the roll temperature (roller temperature <40°C), and add 5 parts of activator zinc oxide and 2 parts of stearic acid, 1 part of paraffin, 2 parts of antioxidant 4010NA, 1.2 parts of sulfur, 40 parts of carbon black N330, 3 parts of Si69, 6 parts of aromatic oil, 1.4 parts of N-cyclohexyl-2-benzothiazole sulfen Amide (abbreviation: promote CZ), cutter and bagging until mixed evenly; adjust the roller distance to the next film, park for 8h, and set aside. Cut the mixed rubber into a film with a specification of 295×415×7mm, and then stack it in sequence according to the order of one steel plate and one film. Put the bille...

Embodiment 2

[0030] Laminated rubber preparation process - Weigh 105 parts of clay glue No. 1 and masticate 7 times on the open mill (roller distance 0.5mm); control the roll temperature (roller temperature <40°C), and add 5 parts of activator zinc oxide and 2 parts of stearic acid, 1 part of paraffin, 2 parts of anti-aging agent 4010NA, 1.2 parts of sulfur, 40 parts of carbon black N330, 3 parts of Si69, 6 parts of aromatic oil, 1.4 parts of CZ, cutting knife and bagging until mixed evenly; Adjust the roller distance to the next film, park it for 8 hours, and wait for use. Cut the mixed rubber into a film with a specification of 295×415×7mm, and then stack it in sequence according to the order of one steel plate and one film. Put the billet into the preheated mold, the mold temperature is 145°C, vulcanize under the pressure of 15Mpa for 2 hours, and the rubber bearing is made.

[0031] Preparation process of rubber core material composite material - masticate 100 parts of chlorinated but...

Embodiment 3

[0035]Laminated rubber preparation process - Weigh 105 parts of clay glue No. 1 and masticate 7 times on the open mill (roller distance 0.5mm); control the roll temperature (roller temperature <40°C), and add 5 parts of activator zinc oxide and 1 part of stearic acid, 1 part of paraffin, 2 parts of anti-aging agent 4010NA, 1.2 parts of sulfur, 50 parts of carbon black N330, 3 parts of Si69, 6 parts of aromatic hydrocarbon oil, 1.4 parts of CZ, cut and pack until mixed evenly; Adjust the roller distance to the next film, park it for 8 hours, and wait for use. Cut the mixed rubber into a film with a specification of 295×415×7mm, and then stack it in sequence according to the order of one steel plate and one film. Put the billet into the preheated mold, the mold temperature is 145°C, vulcanize under the pressure of 15Mpa for 2 hours, and the rubber bearing is made.

[0036] Preparation process of rubber core material composite material - masticate 100 parts of chlorinated butyl ...

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Abstract

The invention relates to a high-performance rubber composite for a bridge damping support and a preparation method thereof and belongs to the technical field of rubber. Two novel rubber materials are used for the damping support. One material is an organic clay rubber composite having high tensile strength, elongation at break and compression modulus and is suitable for laminated rubber of the support. The other material is a novel rubber composite, has high damping performance, can greatly improve damping ratio of the support and effectively broaden damping temperature range of the rubber support. A crosslinked core material has a certain elasticity and pressure resistance. The damping support prepared by adopting the material has the advantages of being excellent in damping performance and low in equivalent horizontal stiffness and deforming easily under low seismic waves, the actual application requirements of a bridge are met, and the replacement of a lead core in the support is achieved.

Description

technical field [0001] The invention belongs to the technical field of rubber, and relates to a high-performance rubber composite material for bridge shock-absorbing bearings and a preparation method thereof. The prepared novel high-performance rubber composite material can be used to replace laminated rubber and high-damping lead cores in bridge vibration-isolation bearings . Background technique [0002] Bridges are an important link of transportation. Earthquake disasters and strong vibrations will seriously damage bridges, lead to interruption of transportation lines, and cause major economic losses. Therefore, effective shock absorption and shock isolation protection are required in the bridge structure. The bridge bearings dissipate the energy generated by the vibration through horizontal shear deformation and protect the bridge superstructure from earthquake damage. [0003] At present, my country's bridge isolation bearings mainly use lead-core rubber bearings and ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L91/06C08K13/02C08K3/04C08K3/34C08K3/22C08K5/09C08K3/06C08L23/28C08L57/02E01D19/04B29C43/58B29C35/02
Inventor 赵秀英杨守申张立群郭大通孙少辉杨海波温超温跃华张朋朋
Owner BEIJING UNIV OF CHEM TECH
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