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Damping silicon rubber sound insulation material filled with glass microbeads

A technology of glass microbeads and sound insulation materials, which is applied in the field of glass microbead filling damping silicone rubber sound insulation materials and its preparation field, can solve the problems of heavy material quality, unfavorable material popularization and use, increase the density of silicone rubber materials, etc., so as to reduce the material density. , good chemical stability, the effect of increasing compatibility

Active Publication Date: 2014-12-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the introduction of a large number of phenyl chain links in the damping silicone rubber, the material density of the silicone rubber is increased. If it is simply used as a sound insulation material, it is not conducive to the popularization and use of the material due to the heavy quality of the material.

Method used

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  • Damping silicon rubber sound insulation material filled with glass microbeads
  • Damping silicon rubber sound insulation material filled with glass microbeads
  • Damping silicon rubber sound insulation material filled with glass microbeads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: glass microsphere surface treatment

[0036] Add 100g of hollow glass microspheres into the glass reactor, stir and heat to 125°C, heat 0.5g of A-171 to boiling, and pass N 2 , and pass the nitrogen containing A-171 into the glass reactor, adjust the nitrogen flow rate, add it in about 20 minutes, continue the reaction for 10 minutes, and cool down for later use.

Embodiment 2

[0040] Put 100g of damping silicone rubber raw rubber with a molar percentage of 10% of phenyl chain segments and 0.5% of vinyl chain segments into the double rollers of an open rubber mixing machine, and add 40 g of it to be processed in Example 1. Fine glass beads, mix evenly, add 2g of peroxide vulcanizing agent Shuang24 paste and 0.5g of tetramethylthiuram disulfide into the mixture of damping silicone rubber and glass beads, mix evenly, and release Standby to obtain the sound-insulating rubber compound. Put the mixed rubber into the mold, and vulcanize it on a flat vulcanizing machine. The vulcanization conditions are: 150°C, 20MPa, heat preservation for 20min. The tensile strength of the obtained film is 6.5MPa, the tear strength is 20.2KN / m, and the sound insulation effect is as follows: figure 1 shown.

Embodiment 3

[0048]Add 100g of damping silicone rubber with a molar percentage of phenyl chains of 20% and a vinyl chain of 0.8% to the double rollers of an open rubber mixing machine, add 40g and process according to the method of Example 1 Fine glass beads, mixed evenly, add 2g of peroxide vulcanizing agent Shuanger four paste and 0.5g of tetramethylthiuram monosulfide into the mixture of damping silicone rubber and glass beads, mix evenly, and release Standby to obtain the sound-insulating rubber compound. Put the mixed rubber into the mold, and vulcanize it on a flat vulcanizing machine. The vulcanization conditions are: 150°C, 20MPa, heat preservation for 20min. The obtained film has a tensile strength of 6MPa and a tear strength of 20KN / m.

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Abstract

The invention discloses a damping silicon rubber sound insulation material filled with glass microbeads. The damping silicon rubber sound insulation material is prepared from the following raw materials in parts by weight: 80-120 parts of damping silicon rubber, 5-40 parts of glass microbeads, 0.2-0.8 part of vinyl trimethoxysilane, 0.1-2 parts of tetramethyl thiuram and 0.5-5 parts of peroxide vulcanizing agent, wherein in the damping silicon rubber, the content of vinyl chain elements is 0.2-10% by mole percent, and the content of phenyl chain elements is 10-20% by mole percent; and the peroxide vulcanizing agent is bis (2,4-dichlorobenzoyl) peroxide, the vulcanizing agent, namely 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane or dibenzoyl peroxide. The invention further discloses a preparation method of the damping silicon rubber sound insulation material. The glass microbeads are filled in the damping silicon rubber, so that the weight of the damping silicon rubber material is reduced, the sound insulation performance of the material is further improved and the damping silicon rubber sound insulation material is conductive to expanding the application of the silicon rubber sound insulation material.

Description

technical field [0001] The invention relates to a glass microbead-filled damping silicone rubber sound-insulating material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Sound insulation materials are of great significance for reducing noise pollution, improving equipment performance, and optimizing working and living environments. Sound insulation materials are generally made of high-density and dense materials, such as lead and concrete, but these materials have problems such as difficult molding and heavy unit mass, which limit their application. Polymer materials are light in weight and easy to shape, but have poor sound insulation effect. The development of sound insulation materials with good sound insulation effect, easy shape and light weight is an important direction for the development of sound insulation materials. [0003] Damping silicone rubber refers to silicone rubber that has good dampi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K9/06C08K7/28C08K5/40C08K5/14
Inventor 张永张国英周传健刘辉谢连科臧玉魏孙梅荣马新刚
Owner STATE GRID CORP OF CHINA
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