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Sound insulation composite material and preparation method thereof

A composite material and raw material technology, which is applied in the field of material processing, can solve the problems of high material density and mechanical properties, and deviation from the trend of lightweight automobiles, and achieve the effects of long service life, low product cost, and improved mechanical properties.

Inactive Publication Date: 2020-05-15
吴娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current modified sound insulation materials are filled with high-content and high-density materials or foamed to achieve the sound-absorbing effect. trend divergence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A sound-insulating composite material, comprising the following raw materials in parts by weight: 120 kg of epoxy resin, 10 kg of modified hollow glass microspheres, 80 kg of methylhexahydrophthalic anhydride, 1 kg of 2-ethyl-4-methylimidazole, and liquid carboxy-terminated butyl The blend of nitrile rubber and EP-51 type epoxy resin 10kg.

[0024] A method for preparing a sound-insulating composite material, comprising the steps of:

[0025] (1) Preparation of modified hollow glass microspheres: soak the hollow glass microspheres in an alkaline solution, stir for 6 hours, stop stirring and leave to soak for 24 hours, then repeatedly wash with distilled water and suction filter until the pH of the filtrate is neutral. Vacuum drying at constant temperature at 60°C, adding a mixture of ethanol and distilled water and ammonia water to the dried hollow glass microspheres, the volume ratio of ethanol and distilled water in the mixture of ethanol and distilled water is 1:1, u...

Embodiment 2

[0029] A sound-insulating composite material, prepared from the following raw materials in parts by weight: 150 kg of epoxy resin, 30 kg of modified hollow glass microspheres, 90 kg of methyl hexahydrophthalic anhydride, 1.5 kg of 2-ethyl-4-methylimidazole, and liquid carboxyl-terminated The blend of nitrile rubber and EP-51 type epoxy resin 12kg.

[0030] A method for preparing a sound-insulating composite material, comprising the steps of:

[0031] (1) Preparation of modified hollow glass microspheres: soak the hollow glass microspheres in an alkaline solution, stir for 8 hours, stop stirring and let stand for soaking for 30 hours, then repeatedly wash with distilled water and suction filter until the pH of the filtrate is neutral. Vacuum drying at a constant temperature of 65°C, adding a mixture of ethanol and distilled water and ammonia water to the dried hollow glass microspheres, the volume ratio of ethanol and distilled water in the mixture of ethanol and distilled wate...

Embodiment 3

[0035] A sound-insulating composite material, which is prepared from the following raw materials in parts by weight: 155kg of epoxy resin, 35kg of modified hollow glass microspheres, 100kg of methyl hexahydrophthalic anhydride, 2 parts of accelerator, liquid carboxy-terminated nitrile rubber and EP-51 type Epoxy blend 15 parts.

[0036] A method for preparing a sound-insulating composite material, comprising the steps of:

[0037](1) Preparation of modified hollow glass microspheres: soak the hollow glass microspheres in an alkaline solution, stir for 6 hours, stop stirring and leave to soak for 36 hours, then repeatedly wash with distilled water and suction filter until the pH of the filtrate is neutral. Vacuum drying at a constant temperature of 65°C, adding a mixture of ethanol and distilled water and ammonia water to the dried hollow glass microspheres, the volume ratio of ethanol and distilled water in the mixture of ethanol and distilled water is 1:1, ultrasonic dispersi...

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Abstract

The invention discloses a sound insulation composite material and a preparation method thereof, and belongs to the technical field of material processing; the sound insulation composite material comprises the following raw materials in parts by weight: 120-180 parts of epoxy resin, 10-55 parts of modified hollow glass beads, 80-120 parts of a curing agent, 1-2 parts of an accelerator, and 10-18 parts of a toughening agent. By utilizing the excellent characteristics of low density, high strength, sound insulation, wave absorption and the like of the modified hollow glass beads, the modified hollow glass beads are compounded with the epoxy resin, so that the mechanical property of the matrix is improved, the density of the matrix is reduced, countless tiny cavities are constructed in the epoxy resin matrix, and the cavities endow the sound insulation composite material with excellent sound insulation performance. However, the density difference between the epoxy resin and the modified hollow glass beads is large, and macroscopic phase separation is likely to happen in the compounding process. The sound insulation composite material can block sound transmission and weaken projection sound energy, has the advantages of quite good sound insulation effect, light weight and low product cost, and is particularly suitable for being used as a sound insulation material of an automobile.

Description

technical field [0001] The invention belongs to the technical field of material processing, in particular to a sound-insulating composite material and a preparation method thereof. Background technique [0002] All materials that can be used to block noise are collectively referred to as sound insulation materials. Sound insulation refers to the isolation, isolation, separation, etc. of sound or noise through certain objects. Therefore, sound insulation materials are needed. The number of decibels related to the transmitted sound energy is the sound insulation of the material. [0003] With the increasing demand for lightweight and environmentally friendly automobiles, sound insulation materials that are lightweight, high-rigid, and easy to process and shape are extremely important. At present, the basic ways to control noise are sound insulation, sound absorption, damping and vibration isolation. Traditional sound insulation materials generally use materials with high den...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/02C08L13/00C08K9/06C08K7/28
CPCC08L63/00C08L2205/03C08L2205/025
Inventor 吴娟
Owner 吴娟
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