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Eka-lead high-polymer composite material for shock-insulation brackets

A vibration-isolation bearing and composite material technology, applied in the field of rubber, can solve the problems of high equivalent horizontal rigidity of lead-core rubber bearing, environmental pollution of lead core, and decline of damping performance, and achieve good comprehensive shock-absorbing effect and no pollution cost, low cost effect

Active Publication Date: 2016-08-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equivalent horizontal stiffness of the lead-core rubber bearing is high, which often exceeds the standard range. When an earthquake occurs, the lead core is prone to yield fracture, and the self-recovery ability is reduced.
In addition, under normal load and low-period vibration, the lead core in the support will undergo fatigue shear failure, and the damping performance will decrease
Moreover, the lead core will also cause serious pollution to the environment.

Method used

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  • Eka-lead high-polymer composite material for shock-insulation brackets
  • Eka-lead high-polymer composite material for shock-insulation brackets
  • Eka-lead high-polymer composite material for shock-insulation brackets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0023] Prepare the lead-like polymer composite material according to Table 1, and the specific preparation process is as follows:

[0024] Table 1 Chlorohydrin rubber formula

[0025]

[0026]

[0027] Organicization of sodium montmorillonite: add 10.0g of sodium montmorillonite to 400mL of deionized water, stir for 1 hour with magnetic force, and let it stand for 24 hours until it swells completely; Ammonium was added to 100mL deionized water to dissolve to obtain an intercalation agent solution; put the round bottom flask containing the montmorillonite aqueous solution into a water bath at 80°C to keep warm and stir, and then add the intercalation agent solution dropwise to the round bottom flask , dripped within 35min, reacted for 5h, cooled and stood still; removed the supernatant to obtain a white precipitate, washed with deionized water and filtered several times until the filtrate was filled with 1% AgNO 3 There was no light yellow precipitate in the solution; th...

Embodiment 4-6

[0038] Prepare the lead-like polymer composite material according to Table 4, and the specific preparation process is as follows:

[0039] Table 4 Chlorohydrin rubber formula

[0040] formula

Example 4

Example 5

Example 6

Chlorohydrin rubber

100 copies

100 copies

100 copies

organoclay

60 copies

100 copies

150 copies

stearic acid

1.5 servings

1.5 servings

1.5 servings

Ethylenethiourea

2.5 servings

2.5 servings

2.5 servings

Antiaging agent NBC

1 copy

1 copy

2 copies

Antiager MB

1 copy

2 copies

2 copies

short fibre

15 copies

15 copies

15 copies

carbon black

0 copies

0 copies

0 copies

PbO4

2 copies

3 copies

4 parts

[0041] Organicization of sodium montmorillonite: add 10.0g of sodium montmorillonite to 400mL of deionized water, stir for 1 hour with magnetic force, and let it stand for ...

Embodiment 7-9

[0052] Prepare the lead-like polymer composite material according to Table 7, and the specific preparation process is as follows:

[0053] Table 7 Chlorohydrin rubber formula

[0054] formula

Example 7

Example 8

Example 9

Chlorohydrin rubber

100 copies

100 copies

100 copies

organoclay

60 copies

100 copies

150 copies

stearic acid

2 copies

2 copies

2 copies

Ethylenethiourea

2 copies

2 copies

2 copies

Antiaging agent NBC

1 copy

1 copy

2 copies

Antiager MB

1 copy

2 copies

2 copies

short fibre

10 copies

10 copies

10 copies

carbon black

10 copies

10 copies

10 copies

PbO4

2 copies

3 copies

4 parts

[0055] Organicization of sodium montmorillonite: Add 10.0g of sodium montmorillonite to 400mL of deionized water, stir for 1 hour with magnetic force, and let it stand for 24 hours until it swe...

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Abstract

The invention relates to an eka-lead high-polymer composite material for shock-insulation brackets, belonging to the technical field of rubber. The organic clay is added into the epichlorohydrin rubber by melt intercalation to prepare the novel high-polymer composite material; and the high-polymer composite material has close mechanical properties and damping capacity to the lead metal. The added modified organic clay obviously enhances the stress under low strain conditions. The novel core hybrid material provided by the invention is used for shock-insulation brackets. The eka-lead high-polymer composite material for shock-insulation brackets has high-damping capacity, and can greatly enhance the damping ratio of the brackets. The shock-insulation bracket prepared from the novel core hybrid material has the characteristics of excellent damping capacity, low equivalent horizontal stiffness, high deformability under low seismic waves and the like, satisfies the demands for bridge practical application, and substitutes the lead core in the bracket.

Description

technical field [0001] The invention belongs to the technical field of rubber, and relates to a novel polymer composite material for shock-isolation bearings. The material has mechanical properties and damping properties similar to those of lead metal, and can be used as a substitute for high-damping lead cores in buildings and bridge shock-isolation bearings. . Background technique [0002] Earthquake is a sudden, high frequency and unpredictable natural disaster, which is extremely harmful to human society. Earthquakes and the secondary disasters caused by them caused a large number of collapses and damages of buildings and bridge facilities, causing huge losses of human life and property. Compared with the traditional rigid anti-seismic technology, the rubber isolator based on the "basic isolation concept" has a better shock absorption effect. In recent years, seismic isolation bearings have become the first choice for important buildings and bridges with high earthquak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/03C08L77/06C08K13/06C08K9/04C08K3/34C08K3/04C08K3/22C08K5/09
CPCC08L71/03C08L2205/16C08L77/06C08K13/06C08K9/04C08K3/346C08K3/04C08K2003/2234C08K5/09
Inventor 赵秀英孙少辉张立群温超张朋朋杨海波杨守申李凡珠
Owner BEIJING UNIV OF CHEM TECH