A polymer-based wide temperature range damping composite material and its preparation method

A damping composite material and polymer-based technology, which is applied to the composite material of the wide-temperature-domain constrained damping structure, and the polymer-based wide-temperature-domain damping composite material field, can solve the problems of low number of layers, complicated process, inconvenient use, etc. Achieve the effect of improving damping performance, increasing interfacial friction and slip, and increasing loss factor

Active Publication Date: 2015-08-12
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the layered constrained damping currently researched and applied has a low number of layers (generally 2 to 3 layers), and most of them are laid manually or by machine, which is complicated and inconvenient to use.

Method used

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  • A polymer-based wide temperature range damping composite material and its preparation method
  • A polymer-based wide temperature range damping composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032](1) Select 100 parts of chlorinated butyl rubber (by weight) with damping properties as the matrix of the polymer-based rubber damping layer, add 30 parts of carbon black (filler), 35 parts of petroleum resin (tackifying resin), 10 parts of white oil (operation oil), 1 part of stearic acid (lubricant), and 1 part of p-phenylenediamine anti-aging agent were kneaded on a double-roller mill at room temperature for 8 minutes to produce a damping rubber compound. The glass transition temperature of the compound is -15°C, that is, between -60°C and 10°C, the maximum loss factor is 1.20, that is, greater than 0.75, and the effective damping temperature range (Tanδ>0.5) is -36°C to 21°C, that is, the width of the effective damping temperature range is greater than 40°C, which meets the requirements for the performance of the polymer-based rubber damping layer material in the claims.

[0033] (2) Select fully dry polyvinyl acetate plastic as the matrix of the polymer-based plasti...

Embodiment 2

[0039] (1) Select 100 parts of fully dry nitrile rubber (by weight) as the matrix of the polymer-based rubber damping layer, add 30 parts of carbon black (filler), 10 parts of white oil (operation oil), stearic acid ( Lubricant) 1 part, hindered phenol (AO-60) 25 parts, after stirring and mixing, add to the extruder to granulate to obtain the damping layer material. The glass transition temperature of the damping layer material is -9°C, that is, between -60°C and 10°C, the maximum loss factor is 1.2, that is, greater than 0.75, and the effective damping temperature range (Tanδ>0.5) is -29°C~ 24°C, that is, the width is greater than 40°C, which meets the requirements for the performance of the polymer-based rubber damping layer material in the claims.

[0040] (2) Select 100 parts of fully dry polyvinyl acetate (by weight), add 12 parts of benzyl alcohol (plasticizer), stir and mix, then add to an extruder to mix and granulate to obtain a plastic constrained layer material. Af...

Embodiment 3

[0046] (1) Select 100 parts of chlorinated butyl rubber (by weight) as the matrix of the polymer-based rubber damping layer, add 35 parts of carbon black (filler), 20 parts of petroleum resin (tackifying resin), white oil (operation Oil) 10 parts, stearic acid (lubricant) 1 part, p-phenylenediamine anti-aging agent 1 part, and kneaded on a double-roll mill at room temperature for 8 minutes to produce a damping rubber compound. The glass transition temperature of the damping layer material is -10°C, that is, between -60°C and 10°C, the maximum loss factor is 1.25, that is, greater than 0.75, and the effective damping temperature range (Tanδ>0.5) is -33°C to 25°C, that is, the width of the effective damping temperature range is greater than 40°C, which meets the requirements for the performance of the polymer-based rubber damping layer material in the claims.

[0047] (2) Select 100 parts of polymethyl methacrylate (by weight) as the matrix of the polymer-based plastic constrain...

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Abstract

The invention discloses a polymer-based wide-temperature-range damping composite material and a preparation method thereof. The composite material is laminated by a rubber damping layer and a plastic restraint layer alternately to form a soft and hard alternated layered restraint damping structure, wherein the rubber damping layer and the plastic restraint layer are required to have a certain damping property; a difference between glass-transition temperatures of the plastic restraint layer and the rubber damping layer is smaller than 100 DEG C; and damping loss peaks of the rubber damping layer and the plastic restraint layer can generate an overlap joint, so that an effective damping temperature range of the composite material is broadened; and the composite material presents the characteristics of wide damping temperature range and high damping performance. The layer number and the layer thickness of the damping composite material can be controlled; the damping peak temperature range can be adjusted; and the mechanical performance of the damping composite material is excellent, with no need of vulcanization; and raw materials are commercially available. The method is simple, can realize continuous and large-scale production, and is low in production cost and high in efficiency.

Description

technical field [0001] The invention relates to a polymer-based wide-temperature-range damping composite material, more specifically, a plastic with a higher modulus is used as a constraining layer, and a rubber with a lower modulus is used as a damping layer, and has a wide temperature range of alternating laminations. The invention relates to a composite material of a temperature domain constrained damping structure, which belongs to the field of processing and manufacturing of polymer materials. Background technique [0002] With the development of science and technology and modern industry, mechanical equipment tends to be high-speed and automatic, and vibration and noise pollution are becoming more and more serious. Vibration not only affects the operation and life of mechanical equipment, but also affects human health. Therefore, vibration and noise reduction has attracted widespread attention from all walks of life and has become an important issue that needs to be so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B33/00B29C47/06
Inventor 郭少云张风顺吴宏杨金王文志姜其斌
Owner SICHUAN UNIV
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