Low-modulus high-damping rubber for building and preparation method thereof

A low-modulus, high-damping technology, applied in the field of preparing high-damping seismic isolation bearings for buildings with low shear modulus, can solve problems such as the decline in seismic isolation effect, and achieve low horizontal stiffness, good mechanical properties, and low hardness. Effect

Active Publication Date: 2017-05-31
JIANGYIN HAIDA RUBBER & PLASTIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the increase in the hardness of the rubber material can increase the damping coefficient (shock isolation effect), it will lead to a decrease in the shock isolation effect due to the increase in the horizontal stiffness of the overall support. At present, there are high damping rubber materials with a hardness of more than 70 Shore A on the market. support

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The components and mass parts are: CIIR 1068, 100 parts; N220, 20 parts; flake graphene, 5 parts; fatty acid calcium salt, 10 parts; antimony trioxide, 15 parts; zinc borate, 5 parts; Dioctyl dioic acid DOS, 15 parts; antioxidant AO-60, 10 parts; antiaging agent 2246 / BLE / 4010NA parts respectively 1.5 / 1.5 / 1; fatty acid metal salt, 5 parts; zinc oxide, 5 parts.

[0029]The preparation process of Example 1 is: first plasticize the raw rubber base on a 6-inch open rubber mixer with the minimum roller distance for 5 times, then increase the roller distance to about 3mm, and then cover the rollers for feeding, and the roller temperature is controlled at 40-50 ℃, and then control the mixing time of carbon black, plasticizer, flame retardant system, antioxidant and carbon nanotubes at about 20 minutes; then control the roller temperature at 90-110 ℃, and mix the antioxidant and crosslinking agent The ratio is added to the heated open rubber mixing machine in turn, and the mixin...

Embodiment 2

[0031] The components and mass parts are: BIIR 2244, 100 parts; N110, 25 parts; flake graphene, 10 parts; fatty acid sodium salt, 10 parts; antimony trioxide, 10 parts; zinc borate, 10 parts; Dioctyl dioic acid DOA, 20 parts; antioxidant AO-80, 10 parts; antiaging agent 2246 / BLE / 4010NA parts respectively 1.5 / 1.5 / 1; fatty acid metal salt; brominated alkylphenolic resin WL 5 parts .

[0032] The preparation process of Example 2 is: first plasticize the raw rubber base on a 6-inch open rubber mixer with the minimum roller distance for 5 times, then increase the roller distance to about 3mm, and then cover the rollers for feeding, and the roller temperature is controlled at 40-50 ℃, and then control the mixing time of carbon black, plasticizer, flame retardant system, antioxidant and carbon nanotubes at about 20 minutes; then control the roller temperature at 90-110 ℃, and mix the antioxidant and crosslinking agent The ratio is added to the heated open rubber mixing machine in tu...

Embodiment 3

[0034] The components and mass parts are: BIIR 2244, 100 parts; N110, 20 parts; flake graphene, 15 parts; antimony trioxide, 20 parts; zinc borate, 10 parts; antioxidant AO-80, 5 parts parts; antioxidant 2246 / BLE / 4010NA parts are 1.5 / 1.5 / 1; fatty acid metal salt, 10 parts; zinc oxide, 3 parts; brominated alkylphenolic resin WL 1 part.

[0035] The preparation process of Example 3 is: first plasticize the raw rubber base on a 6-inch open-type rubber mixer with the minimum roller distance for 5 times, then increase the roller distance to about 3mm, and then cover the rollers to feed, and the roller temperature is controlled at 40-50 ℃, and then control the mixing time of carbon black, plasticizer, flame retardant system, antioxidant and carbon nanotubes at about 20 minutes; then control the roller temperature at 90-110 ℃, and mix the antioxidant and crosslinking agent The ratio is added to the heated open rubber mixing machine in turn, and the mixing time is controlled at about ...

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PUM

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Abstract

The invention relates to low-modulus high-damping rubber for a building. Raw materials comprise a crude rubber matrix, carbon black, a plasticizer, a flame retardant, a damping filling material, an anti-aging agent, an antioxidant and a cross-linking agent; the crude rubber matrix is halogenated butyl rubber, and is prepared from chlorinated butyl rubber and brominated butyl rubber; the damping filling material is graphene or a fatty-acid metal salt or is prepared from the graphene and the fatty-acid metal salt. The crude rubber matrix is first subjected to thin-passing for 5 to 10 times by adopting an open mixer or an internal mixer; the carbon black, the plasticizer, the flame retardant, the anti-aging agent, the antioxidant, the damping filling agent and the cross-linking agent are added into the crude rubber matrix in sequence according to a proportion, and an obtained mixture is uniformly mixed; when the antioxidant is added, a mixing temperature is controlled to be 100 to 120 DEG C, a mixing temperature at other time is controlled to be 70 DEG C or below, and an overall mixing time is controlled to be 10 to 20 minutes; afterwards, a proper amount of mixed rubber is put into a corresponding mold, and is subjected to vulcanization molding in a press vulcanizer. The low-modulus high-damping rubber has the hardness which is 35 to 40 (shore A) while having high damping, and is low in horizontal stiffness; the shock insulation effect cannot be decreased.

Description

technical field [0001] The invention relates to a low-modulus high-damping rubber for construction and a preparation method thereof by molding, which is suitable for preparing low-shear modulus high-damping shock-isolation bearings for construction. Background technique [0002] Earthquake is a kind of extremely harmful random natural disaster. The occurrence of earthquake brings great disaster to human beings; the most advanced base isolation technology is to connect the upper building structure with the lower foundation through the damping rubber bearing used in the building. Structural isolation. The basic principle of seismic isolation of damping rubber bearings for buildings is to extend the natural vibration period of the entire building by adding rubber isolation bearings to reduce the seismic response of the upper structure. The general practice is to set up rubber isolation bearings at the bottom of the building, and use the horizontal flexibility of the rubber iso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L61/14C08K13/04C08K7/00C08K3/04C08K5/098C08K3/22C08K3/38C08K5/11
CPCC08K3/04C08K3/22C08K3/2279C08K3/38C08K5/098C08K5/11C08K7/00C08K13/04C08K2003/2296C08K2003/387C08K2201/011C08K2201/014C08L23/28C08L2201/02C08L61/14
Inventor 李波陆飞吴建邺赵晓华陈黎明邱阳
Owner JIANGYIN HAIDA RUBBER & PLASTIC GROUP
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