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Rubber composition for seismic isolation laminates

A technology of rubber composition and laminate, applied in the direction of rubber layered products, shock absorbers, layered products, etc., can solve problems such as hardening and difficulty

Inactive Publication Date: 2000-02-23
YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been difficult to simultaneously achieve high damping capacity and other required physical properties, so the result of such attempts is always accompanied by the problem of hardening

Method used

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  • Rubber composition for seismic isolation laminates
  • Rubber composition for seismic isolation laminates

Examples

Experimental program
Comparison scheme
Effect test

example 1～7 and comparative example 1～10

[0047] Preparation of unvulcanized rubber composition: natural rubber and carbon black in various ratios shown in Tables 2 and 3; 5 parts by weight of aromatic oil per 100 parts by weight of rubber content; 40 parts by weight of resin; 5 parts by weight of zinc white; 1 part by weight of stearic acid; 1.5 parts by weight of sulfur; and 1.0 part by weight of CBS as a vulcanization aid were kneaded.

[0048] The rubber component and auxiliary agents other than vulcanization auxiliary agent (CBS) and sulfur were kneaded for 5 minutes in a Banbury internal mixer (model B, manufactured by Kobe Steel Works, 1.8 L). A vulcanization aid and sulfur were added to the mixture, and the mixture was kneaded in an 8-inch laboratory roll mill for 4 minutes to obtain the rubber composition.

[0049] The contents of the various components shown in Tables 2 and 3 are all in parts by weight. The properties of the carbon blacks used in the Examples and Comparative Examples are listed in Table 1. ...

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PUM

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Abstract

This invention relates to a rubber composition for seismic isolation laminate which exhibits excellent damping capacity as well as sufficient hardening properties. Such rubber composition for a seismic isolation laminate comprises at least a diene rubber; and 40 to 160 parts by weight of carbon black having a CTAB specific surface area of 120 to 370 (m / g) and a CTAB specific surface area (m<2> / g) / iodine adsorption (mg / g) of up to 1.0 per 100 parts by weight of the diene rubber.

Description

technical field [0001] The present invention relates to a rubber composition for a seismic isolation (seismic isolation) laminate, which exhibits excellent damping (shock absorption) capability and sufficient hardening performance. Background of the invention [0002] Seismic energy absorbing systems, that is, anti-seismic systems, anti-seismic systems and even seismic isolation systems, have been widely used in recent years, and seismic-isolation rubber systems comprising alternately laminated rubber compositions and rigid plates have been used as bridge bearings and building foundations. isolation. The shock-isolating rubber system is a system composed of rubber compositions and rigid plates alternately laminated. Since it is very hard in the vertical direction and flexible in the horizontal direction, it shows low shear rigidity. The function of this kind of seismic isolation rubber system is to stagger the natural vibration period of the building from the seismic vibrat...

Claims

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Application Information

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IPC IPC(8): B32B25/04C08K3/04E02D27/34F16F1/36F16F1/40F16F7/108
CPCF16F7/108E02D27/34F16F1/40B32B25/04C08K3/04E02D2300/0001F16F1/3605C08L21/00C08L9/00B32B2307/56B32B15/06B32B25/16
Inventor 岛田淳大石英之城川隆
Owner YOKOHAMA RUBBER CO LTD
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