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Base rubber material of a shock-isolation bearing and preparation method thereof

A vibration isolation bearing and rubber material technology, applied in the field of rubber materials, can solve the problems of mechanical properties change, reducing the safety and stability of use, etc.

Active Publication Date: 2022-05-10
HENGSHUI ZHONGTIEJIAN ENG RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the unsaturated rubber is oxidized, the mechanical properties will change significantly, which will significantly reduce the safety and stability of use; at the same time, the use of rubber isolation bearings should consider the differences in climate in various regions, such as heat resistance in the south and cold resistance in the north. Corrosion resistance and heat and humidity resistance should be considered in coastal areas, and ultraviolet radiation and other factors should be considered in plateau areas

Method used

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  • Base rubber material of a shock-isolation bearing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In the first step, 50 parts by weight of natural rubber, 25 parts by weight of chlorinated polyethylene rubber, and 25 parts by weight of acrylate rubber are added to the internal mixer at a speed of 30 r / min, and mixed for 5 seconds;

[0042] Add 4 parts by weight of active agent, 1 part by weight of antioxidant, 20 parts by weight of carbon black, 20 parts by weight of carbon fiber powder, 10 parts by weight of petroleum resin, and 25 parts by weight of softening agent;

[0043] When the temperature rises to 120°C, add 10 parts by weight of maleic anhydride and 8 parts by weight of initiator, and continue mixing for 30 seconds to debinding;

[0044] The compounded rubber is discharged into the twin-screw extruder through a completely sealed pipeline, and is formed into a sheet by a twin-roller calender. The screw speed of the extruder is 1.5r / min, the sheet output speed of the double-roller calender is 2r / min, the distance between the rollers is 20mm, and the film tem...

Embodiment 2

[0054] In the first step, 90 parts by weight of natural rubber, 5 parts by weight of chlorinated polyethylene rubber, and 5 parts by weight of acrylate rubber are added to the internal mixer at a speed of 70 r / min, and mixed for 120 s;

[0055] Add 8 parts by weight of active agent, 3 parts by weight of antioxidant, 70 parts by weight of carbon black, 5 parts by weight of carbon fiber powder, 30 parts by weight of petroleum resin, and 5 parts by weight of softening agent;

[0056] When the temperature rises to 150°C, add parts by weight of maleic anhydride and 2 parts by weight of initiator, and continue mixing for 90s to debinding;

[0057] The compounded rubber is discharged into the twin-screw extruder through a completely sealed pipeline, and is formed into a sheet by a twin-roller calender. The screw speed of the extruder is 40r / min, the sheet output speed of the double-roller calender is 40r / min, the distance between the rollers is 2mm, and the temperature of the film is...

Embodiment 3

[0067] In the first step, 70 parts by weight of natural rubber, 15 parts by weight of chlorinated polyethylene rubber, and 15 parts by weight of acrylic ester rubber are added to the internal mixer at a speed of 50 r / min, and mixed for 60 seconds;

[0068] Add 6 parts by weight of active agent, 2 parts by weight of antioxidant, 50 parts by weight of carbon black, 10 parts by weight of carbon fiber powder, 20 parts by weight of petroleum resin, and 15 parts by weight of softener. When the temperature rises to 140 ° C, add 6 parts by weight of Malay Anhydride and 5 parts by weight initiator, continue mixing 60s debinding;

[0069] The compounded rubber is discharged into the twin-screw extruder through a completely sealed pipeline, and is formed into a sheet by a twin-roller calender. The screw speed of the extruder is 10r / min, the sheet output speed of the double-roller calender is 10r / min, the distance between the rollers is 15mm, and the temperature of the film is controlled ...

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Abstract

The invention belongs to the technical field of rubber materials, and in particular relates to a base rubber material of a shock-isolation bearing and a preparation method thereof. Its matrix rubber materials include natural rubber, fillers, petroleum resins, softeners, vulcanizing agents, active agents, accelerators, anti-aging agents, maleic anhydride, initiators, and chlorinated polyethylene rubber and acrylate rubber. The rubber material is prepared by a low-temperature mixing method, and has the characteristics of excellent mechanical properties, long stable and effective period, comprehensive anti-aging and high damping and buffering performance, and the production process is fast and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and in particular relates to a base rubber material of a shock-isolation bearing and a preparation method thereof. Background technique [0002] The rubber isolation bearing is composed of multiple layers of steel plates and rubber alternately stacked. The upper and lower seismic movements are isolated through the shear deformation of the rubber matrix. The steel plate is used as the stiffening material of the rubber bearing, which changes the vertical stiffness of the rubber body. The characteristics make it not only reduce the horizontal earthquake action, but also withstand large vertical loads. It has the advantages of simple structure, easy processing and manufacturing, less steel consumption, low cost, and convenient installation, so it has become the most commonly used supporting and shock-absorbing member. [0003] The building is constantly subjected to vertical loads during us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L57/02C08L23/28C08L33/04C08K13/06C08K9/06C08K9/04C08K3/04C08K7/06C08K3/06C08K3/22C08K5/09C08F255/02C08F265/04C08F222/06B29D7/01
CPCC08L7/00C08F255/023C08F265/04B29D7/01C08L2205/035C08K2003/2296C08K2201/016C08K2201/003C08L2201/08C08F222/06C08L57/02C08L23/286C08L33/04C08K13/06C08K9/06C08K9/04C08K3/04C08K7/06C08K3/06C08K3/22C08K5/09
Inventor 郭勇赵雅婷贾雷雷李朋李春明何云鹏田月华李登培孙建凯
Owner HENGSHUI ZHONGTIEJIAN ENG RUBBER
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