RU137286U1 - LAMINATED SOUND INSULATING MATERIAL - Google Patents

Abstract

A layered soundproofing material comprising at least one layer of porous material and an elastic polymer layer, characterized in that it contains an additional layer of porous material, and an elastic polymer layer 2-4 mm thick is located between layers of porous material 10-25 mm thick each and has the following composition, wt.%:

Description

The utility model relates to laminated soundproof materials consisting of layers of a porous material and an elastomeric composition placed between them, namely, a slow-burning, sealing mastic, and intended for use in industrial and residential construction.

Known soundproofing material according to US Pat. USA 5266143 (publ. 30.11.1993 g.), Consisting of a porous material (natural and / or synthetic textile fibers impregnated with thermosetting resins, polyurethane foam, polyethylene foam, etc.) and a heavy rubber-based layer having the following composition, wt.% :

I. Polyisoprene 15-45 Plasticizer 1-3 Polychloroethylene 2-5 Calcium carbonate 50-80 Lampblack 2-3

Or

II. Polyisoprene 25-55 Plasticizer 1-3 Polychloroethylene 2-5 Barium Sulphate 40-70 Lampblack 2-3

In the manufacture of the material, the heavy layer is fixed with the porous material by the additional use of various adhesives, preheating the heavy layer to temperatures above 70 ° C and mechanical pressure.

Thus, the disadvantages of this design are the complexity of manufacturing the product and the release of harmful substances into the environment when the porous material is impregnated with thermosetting resins.

Known noise insulation material according to US Pat. RF 2287434 (publ. 20.11.2006), comprising a heavy layer of thermoplastic sheet material with a thickness of 2-3 mm and a surface weight of 3.0-4.5 kg / m ² based on a thermoplastic of ethylene propylene rubber with polyethylene or a copolymer of ethylene with vinyl acetate and a layer of porous polyurethane foam obtained by the interaction of the polyol and isocyanate.

The low density of the composition based on ethylene propylene rubber (~ 1.5 g / cm ³ ) does not provide high sound insulating properties of the structural material.

Known soundproofing material closest to the claimed utility model, according to US Pat. RF 2340640 (published on December 10, 2008). It is a layer of porous material with a layer of elastic polymer-bitumen composition placed on it, which has the following composition, mass. %:

oil bitumen 17.0-23.0 styrene butadiene synthetic rubber 8.0-10.0 ethylene vinyl acetate copolymer 1.0-2.0 dibutyl phthalate 1,0 a piece of chalk 60.0-65.0 substandard basalt wool 5.0-10.0

However, this soundproofing material has the following disadvantages:

1. Insufficiently high soundproofing properties of structures due to the low density of the polymer-bitumen composition (1.4-1.58) g / cm ³ .

2. The complexity of manufacturing the material due to the low adhesion of the polymer-bitumen composition under normal conditions to polymer foam materials that are part of the soundproofing material, which requires the additional use of various adhesives and mastics, preheating the heavy layer to temperatures above 80 ° C and mechanical pressure for the purpose of melting the composition or mechanical fastening for fixing on the protected surface.

3. Insufficient environmental safety, since mastic contains bitumen, which is a carcinogenic substance and whose use has recently been limited in the construction of civil buildings and structures.

Utility Model Essence

The objective of the utility model is to develop a layered soundproofing material, comprising at least one layer of porous material and an elastic polymer layer that would have higher soundproofing, adhesive properties to porous materials and higher environmental safety.

The problem is solved by a layered soundproofing material comprising at least one layer of porous material and an elastic polymer layer that contains an additional layer of porous material, and an elastic polymer layer 2-4 mm thick is located between the layers of porous material 10-25 mm thick each and has the following composition, wt.%:

Chlorobutyl rubber 3.6-4.2 Ether glycerin tall oil rosin 1.0-1.5 High pressure polyethylene film 0.3-0.4 Zinc borate 4.0-4.6 Magnesium hydroxide 6.0-7.0 Aluminum hydroxide 22.0-24.0 Trichloropropyl phosphate 2.5-3.0 Barite Concentrate 48.0-51.0 Chloroparaffin HP-470 1.8-2.0 PN-6sh oil 7.0-8.0

The thickness of the elastic polymer layer is 2-4 mm, and the layers of the porous material are 10-25 mm each. When used in the design of layers of smaller thickness, the soundproofing of the room will be insufficient, with a greater thickness of the layers, the useful area of the room decreases and the cost of the structure increases, which makes the use of the claimed design disadvantageous.

The figure shows a section of the resulting laminated soundproofing material, where: 1 - an elastic polymer layer, 2 - layers of a porous material.

A useful, model allows you to get the following benefits:

1. Higher soundproofing properties, which makes it possible to design thinner soundproofing systems, while maintaining the useful area of the room.

An increase in the airborne sound insulation index, Rw, of soundproofing material by 1 dB corresponds to a decrease in sound pressure by 11% / I.P. Bogolepov. Industrial soundproofing, L. "Shipbuilding", 1986. - p. 29-33 /.

2. Significant simplification of the manufacturing process of the material, since the elastomeric composition included in the soundproof structure has significantly higher adhesion under normal conditions to porous materials, which allows it to perform the function of an adhesive mounting layer and, therefore, facilitates its manufacture without increasing material and labor costs.

3. The material is more environmentally friendly, since the elastic polymer composition included in its structure does not contain bitumen. Such high environmental safety makes it possible to mount it in rooms with high environmental safety requirements, for example, in residential premises.

In addition, the material is more flexible and flexible, which makes it possible to transport it in any convenient way: in sheets or in a roll. The material is easy to cut to apply on the surface of any configuration.

The temperature range of operation of soundproofing material from minus 45 ° C to plus 100 ° C makes it possible to use it in unheated rooms.

Information confirming the ability to reproduce a utility model

The following materials are used to make an elastic polymer composition:

- chlorobutyl rubber - TU 2294-096-05766801-2000 or imported chlorobutyl rubber 1066, 1068 CTR 123741-06

- glycerin ether of tall oil rosin - TU 13-00281074-152-95;

- high pressure polyethylene in the form of a film - GOST 10354-82;

- zinc borate - TU-2146-186-10968286-2004;

- magnesium hydroxide, for example, brand FRAMITEKS 05-97 - TU 2133-011-40705684-2005;

- aluminum hydroxide, for example, brand FRAMIAL-05 - TU-1711-015-40705684-2006;

- trichloropropyl phosphate - TU 2493-320-05763441-2000;

- barite concentrate - GOST 4682-84;

- chloroparaffin HP-470 - TU 6-01-16-90;

- PN-6sh oil - TU 38.1011217-89.

The claimed soundproofing material is made as follows. An elastic polymer composition for the heavy layer is prepared in a mixer with Z-shaped mixers at a temperature of (90-110) ° C by mechanically mixing the mixture of components with the subsequent formation of a non-drying sealant web of different thicknesses (2-4) mm between sheets of release paper using a double-roll calibration node.

Then, release paper is removed from each side of the elastic polymer composition and duplicated between layers of porous material 10–25 mm thick each. The thickness of the layers of the porous material can be either the same or different. As the porous material can be drywall, polyethylene foam, polyurethane foam, melamine formaldehyde foam, etc.

The soundproofing properties of the material, which is a structural material in the form of a canvas of an elastic polymer composition with a thickness of 2-4 mm, located between layers of melamine-formaldehyde foam with a density of 8 g / cm ³ and a thickness of 10-25 mm each, was judged by the air noise insulation index in the frequency range ( 100-3150) Hz, (Rw), determined according to GOST 27296-87.

The adhesion of the elastic polymer composition to the porous material was judged by the bond strength of its sample 2-4 mm thick with melamine-formaldehyde foam with a density of 8 g / cm ³ when peeling, (X), H, and determined according to GOST 17317-88.

To obtain the correct comparative data, soundproofing materials for the prototype and the claimed model were tested the same.

The flexible polymer-bitumen composition of the prototype used the following composition, wt.%:

oil bitumen 20,0 styrene butadiene synthetic rubber 10.0 ethylene vinyl acetate copolymer 1,0 dibutyl phthalate 1,0 a piece of chalk 63.0 substandard basalt wool 5,0

To test the soundproofing properties of the material according to the prototype, a structural material was used in the form of a web of a polymer-bitumen composition 2.0 mm thick located between layers of melamine-formaldehyde foam with a density of 8 g / cm ³ and a thickness of 25 mm each.

The compositions of the claimed utility model and its properties are shown in the table.

Table The components of the mastic, wt.% Examples one 2 3 four 5 6 Prototype 1 Chlorobutyl rubber 3.6 3.8 3.6 3.9 4.0 4.2 2 Ether glycerin tall oil rosin. 1,1 1,0 1,0 1.4 1,5 1,2 3 High-pressure polyethylene in the form of a film 0.40 0.30 0.35 0.40 0.35 0.30 4 Zinc borate 4.2 4.0 4.0 4.3 4.6 4.1 5 Magnesium hydroxide 6.4 6.0 6.6 7.0 6.2 6.0 6 Aluminum hydroxide 23.0 22.2 24.0 22.0 23.0 22.5 7 Trichloropropyl phosphate 2.7 2,8 2.65 2,5 2.65 3.0 8 Barite concentrate 49.4 51.0 48.0 49.0 48.0 49.2 9 Chloroparaffin HP-470 1.9 1.9 1.8 2.0 1.9 1.8 10 Oil PN-6sh 7.3 7.0 8.0 7.5 7.8 7.7 The thickness of the polymer layer, mm 2 3 3 2 3 four The thickness of the layer of porous material, mm 10 12.5 10 25 25 12.5 Properties: 1 Sealant density, g / cm ³ 2,3 2,3 2.2 2.2 2.2 2,3 1.55 2 Airborne sound insulation index, Rw, dB 23 26 26 24 27 28 22 3 The bond strength of the mastic with melamine formaldehyde foam, X, H 1,63 1.55 1.80 1.75 1.80 1.80 0.2

Claims (1)

A layered soundproofing material comprising at least one layer of porous material and an elastic polymer layer, characterized in that it contains an additional layer of porous material, and an elastic polymer layer 2-4 mm thick is located between layers of porous material 10-25 mm thick each and has the following composition, wt.%: Chlorobutyl rubber 3.6-4.2 Ether glycerin tall oil rosin 1.0-1.5 High pressure polyethylene film 0.3-0.4 Zinc borate 4.0-4.6 Magnesium hydroxide 6.0-7.0 Aluminum hydroxide 22.0-24.0 Trichloropropyl phosphate 2.5-3.0 Barite Concentrate 48.0-51.0 Chloroparaffin HP-470 1.8-2.0 PN-6sh oil 7.0-8.0

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