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Environment-friendly composite damping board for vibration and noise reduction and preparation method

A composite damping, vibration reduction and noise reduction technology, applied in the field of vibration reduction and noise reduction materials, can solve the problems of poor environmental protection, easy decomposition and release of harmful gases, poor shear strength of asphalt-based materials, etc., to achieve good flame retardancy and vibration reduction Excellent noise reduction effect, improved modulus and shear strength

Active Publication Date: 2020-05-08
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the asphalt material itself is poor in environmental protection, easy to decompose and release harmful gases, and the shear strength of asphalt-based materials is also poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The damping layer preparation method of a specific embodiment comprises the following steps:

[0036] (1) Internal mixing: Put rubber, carbon black, surface pretreated reinforcing fiber, plasticizer and damping agent into the internal mixer preheated to 50-80°C according to the proportion, and mix all the materials evenly.

[0037] (2) Kneading and extrusion: put the rubber material after banburying, flame retardant and tackifying resin into the kneader according to the ratio and mix them evenly, and extrude through the flat die through the screw, and the extruded material is passed through three or four rollers. Appropriate extrusion, stretching and shaping form a flat damping material.

[0038] Preferably, the constraining layer is an aluminum plate, and the adhesive layer is an acrylic resin film.

[0039] Preferably, the thickness of the composite damping plate is 1-3 mm, wherein the thickness of the damping layer is 0.8-2.3 mm, the thickness of the constraining la...

Embodiment 1

[0046] The damping layer of the environment-friendly composite damping plate of this embodiment is mainly prepared from the following raw materials:

[0047] Nitrile rubber 3kg,

[0048] Butyl rubber 3kg,

[0049] Natural rubber 4kg,

[0050] Carbon black 1kg,

[0051] Surface pretreatment aramid staple fiber 0.8kg,

[0052] Surface pretreatment glass long fiber 0.4kg,

[0053] DOP 1.2kg,

[0054] AO-80 3kg,

[0055] Aluminum hydroxide 40kg,

[0056] Petroleum resin 4kg.

[0057] The environment-friendly composite damping plate of this embodiment, the pretreatment method of its reinforcing fiber comprises the following steps:

[0058] Reinforced fiber surface pretreatment: ultrasonically clean the fiber with acetone for 2 hours, then impregnate the fiber with 20% phosphoric acid solution at 40°C for 10 seconds, wash and dry, and then impregnate the fiber with a certain concentration of EP / 2E4MZ acetone solution (EP The dosage is 6% of fiber, the dosage of 2E4MZ is 4% ...

Embodiment 2

[0068] The damping layer of the environment-friendly composite damping plate of this embodiment is mainly prepared from the following raw materials:

[0069] Nitrile rubber 3kg,

[0070] Butyl rubber 3kg,

[0071] Natural rubber 4kg,

[0072] Carbon black 1kg,

[0073] Surface pretreatment aramid staple fiber 0.4kg,

[0074] Surface pretreatment glass long fiber 0.4kg,

[0075] DOP 1.2kg,

[0076] AO-80 3kg,

[0077] Aluminum hydroxide 40kg,

[0078] Petroleum resin 4kg.

[0079] The environment-friendly composite damping plate of this embodiment, the pretreatment method of its reinforcing fiber comprises the following steps:

[0080] Reinforced fiber surface pretreatment: ultrasonically clean the fiber with acetone for 2 hours, then impregnate the fiber with 20% phosphoric acid solution at 40°C for 10 seconds, wash and dry, and then impregnate the fiber with a certain concentration of EP / 2E4MZ acetone solution (EP The dosage is 6% of fiber, the dosage of 2E4MZ is 4% ...

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Abstract

The invention discloses an environment-friendly composite damping board for vibration and noise reduction and a preparation method. The environment-friendly composite damping board comprises a dampinglayer, a restraint layer and a bonding layer; the damping layer and the restraint layer are compounded through the bonding layer; and the damping layer is prepared from the following components in parts by weight: 100 parts of rubber, 5-15 parts of carbon black, 5-15 parts of reinforced fibers, 10-15 parts of a plasticizer, 25-45 parts of a damping agent, 200-500 parts of a flame retardant and 30-50 parts of tackifying resin, wherein the reinforced fibers comprise aramid staple fibers subjected to surface preprocessing and long glass fibers subjected to surface preprocessing, and the surfacepreprocessing is carried out through dipping processing of a phosphoric acid solution and an epoxy resin solution in sequence. The damping board material is environmentally friendly, free of peculiarsmell, good in flame retardant property and low in smoke density and smoke toxicity during combustion; the damping board has high shearing strength, is firmly adhered to a base material and is not easy to fall off; the damping value is high, the damping temperature range is wide, and the vibration and noise reduction effect is excellent.

Description

technical field [0001] The invention relates to a vibration-reducing and noise-reducing material, in particular to an environment-friendly composite damping plate applied in the aerospace field and a preparation method thereof. Background technique [0002] Damping materials are materials that can convert mechanical vibration energy into thermal energy and dissipate it. Mainly used to control vibration and noise. Damping materials can greatly attenuate the transmission of vibration and noise, so they are widely used in construction, automobile, aerospace, rail transit, petrochemical, electric power and other fields. Especially in the field of aerospace, with the further improvement of people's requirements for comfort, safety and environmental performance, the performance requirements for composite damping panels are becoming more and more stringent, requiring them to be flame-retardant and environmentally friendly, with wide damping temperature range and shear strength. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B7/12B32B15/20B32B15/04B32B9/04B32B33/00C08L7/00C08L9/02C08L23/22C08L77/10C08L57/02C08K13/06C08K9/04C08K9/02C08K7/14C08K3/04C08K3/22
CPCB32B9/00B32B7/12B32B15/20B32B15/04B32B9/041B32B33/00C08L7/00C08L2205/035C08L2205/16C08K2003/2227B32B2307/10B32B2307/56C08L9/02C08L23/22C08L77/10C08L57/02C08K13/06C08K9/04C08K9/08C08K9/02C08K7/14C08K3/04C08K3/22
Inventor 胡钊颜渊巍熊昌义李远唐毅平高玮
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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