RU36869U1 - VIBRATION DAMAGE UNIT - Google Patents

Description

2003132E1.9 ШВМШР ™ .МПК7 F16f 13/00, F16fl / 40 5-r. 1 Vibration-damping block The utility model relates to the field of vibration-damping blocks and can be used in the automotive industry, shipbuilding, construction and other industries where damping of structures is required, as well as their waterproofing and anticorrosion protection. Vibration-absorbing layered materials are known, consisting of two metal sheets connected by a layer of damping material, for example, fiberglass with an adhesive layer based on polyvinyl acetate (see USSR copyright certificate No. 427187 F16f 13/00 1972), or based on thermoplastic material (see copyright certificate USSR No. 540889 F16f 13/00 1975), or based on rubber (see USSR copyright certificate No. 538174 F16f 13/00 1975), or adhesive composition (see USSR copyright certificate No. 883131. C09J 133/10 1979). However, such vibration damping puff structures have either a low vibration damping coefficient, or low adhesive strength and heat resistance or low resistance to environmental influences. The closest technical solution is the damped panel described in the invention according to the copyright certificate of the USSR No. 262549. The damped panel contains two plates and an interlayer associated with them. The interlayer is at least one layer of a binder material, such as calico and foil, impregnated with a one-component sealant VGK-18. However, like the above designs, this damped panel does not provide the necessary vibration damping, does not have physical and mechanical stability in

a wide temperature range, does not have high heat and moisture resistance.

The objective of the utility model is to create a vibration damping block with high damping, sealing and anti-corrosion properties, high adhesive strength, flow resistance on a vertical surface, and physicomechanical stability in the temperature range from minus 60 ° С to plus 160 ° С.

The technical result of using the utility model is to create a vibration damping unit containing one or more foil plates and associated layers of a polymer composition including synthetic rubber, plasticizer, curing agent, filler, taken in the following ratio, mass. %

Synthetic rubber 10-40

Plasticizer 10-40

Vulcanizing agent 0.5 - 2.5

Filler steel

the thickness of the plate is 0.025-0.150 mm, and the interlayer has a thickness of 1.5 -3.0 mm

In FIG. 1 shows the design of a vibration damping unit consisting of one layer of foil and one layer of a polymer composition; Figure 2 shows the design of the vibration damping unit, consisting of two layers of foil and two layers of the polymer composition, arranged sequentially one after another;

In FIG. 3 shows the construction of a vibration damping unit, consisting of three layers of foil and three layers of a polymer composition, arranged in series one after another.

The vibration damping unit consists of at least one foil sheet 1 on which the polymer composition 2 is applied, the thickness of the foil sheet being 0.025-0.150 mm and the thickness of the polymer composition 1.5-3.0 mm. (see figure 1) The design may consist of two layers of foil and two layers of the polymer composition, arranged sequentially one after another (see figure 2). The design may consist of three layers of foil and three layers of a polymer composition arranged sequentially one after another (see Fig. 3).

The polymer composition is obtained by mechanical mixing of the components in the mixers. As a synthetic rubber, the polymer composition contains butyl rubber TU 2294 - 034 - 05766801 - 95 or a mixture of butyl rubber with ethylene propylene diene rubber TU 2294 - 022 - 05766801 - 95. A plasticizer uses mineral oil, for example, industrial oil GOST 20799-80 or transformer oil GOST 982 -80. The filler may be zinc oxide GOST 202-84, chalk TU 5743-006-05346453-96, carbon black GOST 7885-86 or a mixture of these fillers. As a vulcanizing agent, the polymer composition contains

alkylphenol formaldehyde resin TU 2491-018-00205423-99.

The combination of the foil and the polymer composition with the specified thickness range provides high damping properties of the block, and the use of the above components of the polymer composition provides high sealing, anticorrosion, adhesive characteristics and physical and mechanical stability of the vibration damping block over a wide temperature range.

The table shows the dependence of the vibration damping coefficient of the proposed design of the damping block, taking into account the thickness of the foil and the thickness of the polymer composition.

)

Table

The pilot tests showed the effectiveness of the proposed vibration damping unit, and tests conducted under industrial conditions confirmed the expected properties, namely:

Vibration damping coefficient 0.1-0.3

- yield strength at a temperature of 160 ° C no more than 2 mm

- bond strength with metal with peeling of at least 500 n / m

-water absorption not higher than 0.2%

These signs distinguish the proposed technical solution from the prototype and determine the compliance of this solution with the requirements of the utility model.

Claims (1)

Vibration-damping unit containing at least one plate of aluminum foil and an associated layer consisting of a layer of a binder material, characterized in that the layer consists of a polymer composition comprising synthetic rubber, a plasticizer, a vulcanizing agent, a filler, taken in the following ratio, wt.%: Synthetic rubber 10-40 Plasticizer 10-40 Vulcanizing agent 0.5-2.5 Filler Else wherein the plate thickness is 0.025-0.150 mm, and the interlayer has a thickness of 1.5-3.0 mm.