Sound insulation and noise reduction composite material as well as preparation method and application thereof

Abstract

The invention relates to a sound insulation and noise reduction composite material and a preparation method and application thereof, and belongs to the technical field of sound insulation materials. The sound insulation and noise reduction composite material comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorption layer and a butyl damping layer which are sequentially arranged in an attached mode. The center lines of the through holes in the first polyvinyl chloride layer coincide with the center lines of the through holes in the second polyvinyl chloride layer, it can be ensured that the through holes in the first polyvinyl chloride layer and the second polyvinyl chloride layer are combined to form a shape similar to a horn mouth, sound is gradually weakened, and the effects of sound insulation and decoration are achieved; the silicone rubber sound-absorbing layer is an elastic body, so that the transmission of upstairs and downstairs collision sound can be further reduced; the butyl damping layer can block the transmission of collision sound upstairs and downstairs, and the butyl material has certain adhesiveness and can be adhered to a floor and other parts needing noise reduction, so that positioning is convenient.

Description

Technical Field

[0001] The invention relates to a sound insulation and noise reduction composite material and a preparation method and application thereof, belonging to the technical field of sound insulation materials. Background Art

[0002] Most modern buildings have multiple floors and multiple households, and the noise from upstairs and downstairs can spread to each other, seriously affecting people's normal life and rest. The existing technology mostly uses suspended ceilings for sound insulation and noise reduction, but the suspended ceiling cannot effectively isolate indoor or outdoor noise, and the connection between the suspended ceiling board and the upper crossbeam is unstable, which can easily cause safety hazards. Sound insulation and noise reduction stickers can be used to attach to roofs or walls to prevent the spread of noise from upstairs and downstairs and indoors and outdoors, and are especially suitable for the renovation of old buildings. The shape and size of the sound insulation and noise reduction stickers can be set as needed. When used, they are directly attached to roofs or walls, reinforced with rivets all around, and the surface color can be customized according to customer needs, with the advantage of convenient construction.

[0003] For example, Chinese patent document CN113980607A discloses a new type of sound insulation and noise reduction sticker, which includes: SEBS, wax mud, organic resin, unsaturated acid ethylene copolymer, polyester fiber, nano aluminum magnesium and additives. The sound insulation and noise reduction sticker disclosed in the patent document has excellent sound insulation effect when used for sound insulation of drainage pipes, but has poor noise reduction effect when used for indoor roofs to prevent noise from upstairs and downstairs, and cannot meet the noise reduction requirements of indoor roofs. Summary of the invention

[0004] The purpose of the present invention is to provide a sound insulation and noise reduction composite material, which can solve the problem that the current sound insulation and noise reduction stickers are used on indoor roofs to prevent noise from upstairs and downstairs, and have poor noise reduction effect.

[0005] The second object of the present invention is to provide a method for preparing a sound insulation and noise reduction composite material, which can solve the problem that the currently prepared sound insulation and noise reduction stickers have poor noise reduction effect when used on indoor roofs to prevent noise from upstairs and downstairs.

[0006] The third object of the present invention is to provide an application of a sound insulation and noise reduction composite material, which can solve the problem of poor noise reduction effect when the current sound insulation and noise reduction stickers are used on indoor roofs to prevent noise from upstairs and downstairs.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the sound insulation and noise reduction composite material of the present invention is:

[0008] A sound insulation and noise reduction composite material comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorbing layer and a butyl damping layer which are laminated in sequence, wherein the thicknesses of the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound absorbing layer and the butyl damping layer are 1-2 mm, 2-3 mm, 2-4 mm and 2-3 mm respectively, the first polyvinyl chloride layer is provided with a plurality of through holes with a hole diameter of 0.5-1 mm, the second polyvinyl chloride layer is provided with a plurality of through holes with a hole diameter of 2-3 mm, and the center line of each through hole on the first polyvinyl chloride layer coincides with the center line of each through hole on the second polyvinyl chloride layer.

[0009] The sound insulation and noise reduction composite material of the present invention comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound-absorbing layer and a butyl damping layer which are sequentially laminated. A plurality of through holes are arranged on the first polyvinyl chloride layer and the second polyvinyl chloride layer, the aperture of the through holes on the first polyvinyl chloride layer is 0.5-1 mm, the aperture of the through holes on the second polyvinyl chloride layer is 2-3 mm, and the center lines of the through holes on the first polyvinyl chloride layer coincide with the center lines of the through holes on the second polyvinyl chloride layer, so that the through holes on the first polyvinyl chloride layer and the second polyvinyl chloride layer are combined to form a trumpet-like shape, so that the sound is gradually weakened, and the sound insulation and decoration are played. The silicone rubber sound-absorbing layer is an elastomer, which can further reduce the transmission of collision sounds between upstairs and downstairs. The butyl damping layer can block the transmission of collision sounds between upstairs and downstairs, and the butyl material has certain adhesion, so it can be adhered to the floor and other parts where noise reduction is required, which is convenient for positioning. The sound insulation and noise reduction composite material of the present invention has the advantages of small thickness, light weight and convenient use, and can effectively exert the sound insulation and noise reduction effect when used as a sound insulation and noise reduction sticker.

[0010] Preferably, the distribution density of the through holes on the second polyvinyl chloride layer is 166 to 199 per m 2 The center distance between any two adjacent through holes on the second polyvinyl chloride layer is 5 to 6 mm.

[0011] Preferably, the first polyvinyl chloride layer and the second polyvinyl chloride layer are independently made of polyvinyl chloride slurry, and the polyvinyl chloride slurry includes the following components in parts by weight: 140-200 parts of polyvinyl chloride resin, 60-100 parts of plasticizer, 30-50 parts of viscosity reducer, 1-5 parts of stabilizer, 2-8 parts of water absorbent, 3-10 parts of antioxidant, 2-6 parts of rheological agent, and 40-90 parts of hollow glass microspheres.

[0012] Preferably, the polyvinyl chloride resin includes a first polyvinyl chloride resin and a second polyvinyl chloride resin, the first polyvinyl chloride resin has an average degree of polymerization of 1000-1100, the second polyvinyl chloride resin has an average degree of polymerization of 750-850, and the mass ratio of the first polyvinyl chloride resin to the second polyvinyl chloride resin is (0.9-1.1):(0.9-1.1).

[0013] Preferably, the plasticizer is selected from one or any combination of dioctyl phthalate, dibutyl phthalate, tributyl citrate, diethylene glycol dibenzoate, and acetyl tributyl citrate, the viscosity reducer is dearomatized solvent oil, the stabilizer is zinc oxide, the water absorbent is calcium oxide, the antioxidant is a phosphite antioxidant; the rheological agent is fumed silica, and the specific surface area of ​​the fumed silica is 200 to 260 m 2 / g; the D90 particle size of the hollow glass microspheres in the polyvinyl chloride slurry is 30-35 μm, and the density is 0.75-0.8 g / cm 3 .

[0014] Preferably, the preparation method of the first polyvinyl chloride layer and the second polyvinyl chloride layer is as follows: spraying polyvinyl chloride slurry into a mold, then heating at 130-140° C. for 0.5-1 h, cooling and forming to obtain a plate, and then punching holes in the plate.

[0015] Preferably, the silicone rubber sound absorbing layer is made of silicone rubber slurry, and the silicone rubber slurry includes the following components in parts by weight: 80-100 parts of terminal hydroxyl polydimethylsiloxane, 8-10 parts of hollow glass microspheres, 10-14 parts of a cross-linking agent, and 0.1-0.15 parts of a catalyst.

[0016] Preferably, the hydroxy-terminated polydimethylsiloxane has a dynamic viscosity of 100,000 cP to 200,000 cP at room temperature; the hollow glass microspheres in the silicone rubber slurry have a D90 particle size of 75 to 80 μm and a density of 0.22 to 0.3 g / cm 3 ; The crosslinking agent is methyltrimethoxysiloxane and / or methyltriethoxysiloxane; the catalyst is an organic titanium catalyst.

[0017] Preferably, the silicone rubber sound-absorbing layer is prepared by coating silicone rubber slurry and then curing it, and the curing temperature is 50-70°C.

[0018] Preferably, the butyl damping layer is made of butyl rubber slurry, and the butyl rubber slurry includes the following components in parts by weight: 70-90 parts of butyl rubber, 30-50 parts of polyisobutylene, 10-20 parts of reinforcing filler, 10-15 parts of plasticizer, and 10-16 parts of antioxidant.

[0019] Preferably, the butyl rubber is chlorinated butyl rubber, the number average molecular weight of the polyisobutylene is 20,000 to 45,000; the reinforcing filler is hollow glass microspheres, the D90 particle size of the reinforcing filler is 30 to 35 μm, and the density is 0.46 to 0.5 g / cm 3; The plasticizer is diisodecyl phthalate, and the antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is (0.9-1.1):(0.9-1.1).

[0020] Preferably, the preparation method of the butyl rubber slurry is as follows: butyl rubber, polyisobutylene, plasticizer and antioxidant are mixed at 150-160° C. for 2.5-3 hours to obtain a mixture, and then the mixture and reinforcing filler are mixed at 150-160° C. for not less than 0.5 hours.

[0021] The technical solution adopted by the method for preparing the sound insulation and noise reduction composite material of the present invention is:

[0022] A method for preparing the sound insulation and noise reduction composite material as described above comprises the following steps: compounding a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorbing layer and a butyl damping layer to obtain the sound insulation and noise reduction composite material.

[0023] The preparation method of the sound insulation and noise reduction composite material of the present invention is simple to operate, convenient for large-scale production, and has the advantage of low preparation cost. The prepared sound insulation and noise reduction composite material has good sound insulation and noise reduction effects.

[0024] Preferably, the preparation method of the sound insulation and noise reduction composite material comprises the following steps: thermoplastically bonding a first polyvinyl chloride layer and a second polyvinyl chloride layer, then coating a silicone rubber slurry on the surface of the second polyvinyl chloride layer, forming a silicone rubber sound-absorbing layer after curing, and then bonding a butyl damping layer to the surface of the silicone rubber sound-absorbing layer to obtain a sound insulation and noise reduction composite material.

[0025] The technical solution adopted by the application of the sound insulation and noise reduction composite material of the present invention as a sound insulation and noise reduction patch is:

[0026] An application of the sound insulation and noise reduction composite material as described above as a sound insulation and noise reduction sticker.

[0027] The sound insulation and noise reduction composite material of the present invention has good sound insulation and noise reduction effects, and when used as a sound insulation and noise reduction sticker, it can effectively prevent the propagation of impact sounds. DETAILED DESCRIPTION

[0028] The sound insulation and noise reduction composite material of the present invention is a pioneering invention. The sound insulation and noise reduction composite material of the present invention comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorption layer and a butyl damping layer which are sequentially laminated; a plurality of through holes are provided on the first polyvinyl chloride layer and the second polyvinyl chloride layer, the aperture of the through holes on the first polyvinyl chloride layer is 0.5-1 mm, the aperture of the through holes on the second polyvinyl chloride layer is 2-3 mm, and the center lines of the through holes on the first polyvinyl chloride layer and the center lines of the through holes on the second polyvinyl chloride layer coincide with each other, which can ensure that the through holes on the first polyvinyl chloride layer and the second polyvinyl chloride layer are combined to form a shape similar to a trumpet, so that the sound is gradually weakened, playing a role of sound insulation and decoration; the silicone rubber sound absorption layer is an elastomer, which can further reduce the transmission of collision sound between upstairs and downstairs; the butyl damping layer can block the transmission of collision sound between upstairs and downstairs, and the butyl material has a certain adhesion, which can be adhered to the floor and other parts where noise reduction is required, which is convenient for positioning.

[0029] The sound insulation and noise reduction composite material of the present invention comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorbing layer and a butyl damping layer which are sequentially laminated, the thicknesses of the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound absorbing layer and the butyl damping layer are 1-2 mm, 2-3 mm, 2-4 mm and 2-3 mm respectively, a plurality of through holes with a hole diameter of 0.5-1 mm are provided on the first polyvinyl chloride layer, a plurality of through holes with a hole diameter of 2-3 mm are provided on the second polyvinyl chloride layer, the center lines of the through holes on the first polyvinyl chloride layer and the second polyvinyl chloride layer coincide with each other; the distribution density of the through holes on the second polyvinyl chloride layer is 166-199 / m 2 The center distance between any two adjacent through holes on the second polyvinyl chloride layer is 5 to 6 mm.

[0030] In some preferred embodiments, the first polyvinyl chloride layer and the second polyvinyl chloride layer are independently made of polyvinyl chloride slurry, and the polyvinyl chloride slurry includes the following components by weight: 140-200 parts of polyvinyl chloride resin, 60-100 parts of plasticizer, 30-50 parts of viscosity reducer, 1-5 parts of stabilizer, 2-8 parts of water absorbent, 3-10 parts of antioxidant, 2-6 parts of rheological agent, and 40-90 parts of hollow glass microspheres. The hollow glass microspheres in the polyvinyl chloride slurry can reduce the weight of the PVC board and increase the plasticity of the PVC board, so that the density of the PVC board increases from 1.4g / cm 3 Down to 0.9g / cm 3 , the sound insulation is increased by 10% to 50%.

[0031] In some preferred embodiments, the polyvinyl chloride resin includes a first polyvinyl chloride resin and a second polyvinyl chloride resin, the average degree of polymerization of the first polyvinyl chloride resin is 1000-1100, the average degree of polymerization of the second polyvinyl chloride resin is 750-850, and the mass ratio of the first polyvinyl chloride resin to the second polyvinyl chloride resin is (0.9-1.1):(0.9-1.1).

[0032] In some preferred embodiments, the plasticizer is selected from one or any combination of dioctyl phthalate, dibutyl phthalate, tributyl citrate, diethylene glycol dibenzoate, and acetyl tributyl citrate; the viscosity reducer is dearomatized solvent oil; the stabilizer is zinc oxide; the water absorbent is calcium oxide; the antioxidant is a phosphite antioxidant; the rheological agent is fumed silica, and the specific surface area of ​​the fumed silica is 200 to 260 m 2 / g; the D90 particle size of the hollow glass microspheres in the polyvinyl chloride slurry is 30-35 μm, and the density is 0.75-0.8 g / cm 3 .

[0033] In some preferred embodiments, the dearomatized solvent oil is selected from one or any combination of D40 solvent oil, D60 solvent oil, D70 solvent oil and D80 solvent oil.

[0034] In some preferred embodiments, the first polyvinyl chloride layer and the second polyvinyl chloride layer are independently made of polyvinyl chloride slurry into a plate and then punched or made of polyvinyl chloride slurry by molding. The methods for preparing the plate in the prior art are applicable to the present invention, for example, spray molding, molding, etc.

[0035] In some preferred embodiments, the preparation method of the first polyvinyl chloride layer and the second polyvinyl chloride layer is as follows: spraying polyvinyl chloride slurry into a mold, then heating at 130-140° C. for 0.5-1 h, cooling and forming to obtain a plate, and then punching holes in the plate.

[0036] In some preferred embodiments, the polyvinyl chloride slurry is prepared by mixing various components in a prescribed amount.

[0037] In some preferred embodiments, the preparation method of the polyvinyl chloride slurry is as follows: add a plasticizer and a viscosity reducer to a double planetary stirring kettle, stir at a speed of 20 to 30 Hz for 5 to 10 minutes, then add polyvinyl chloride resin, continue to stir at a speed of 20 to 30 Hz for 10 to 30 minutes, then add a stabilizer, a water absorbent and an antioxidant, continue to stir at a speed of 20 to 30 Hz for 10 to 30 minutes, then add a rheological agent, continue to stir at a speed of 20 to 30 Hz for 10 to 20 minutes, then add hollow glass microspheres, continue to stir at a speed of 20 to 30 Hz for 10 to 20 minutes, and finally stir the materials in the double planetary stirring kettle at a pressure of 0.04 to 0.14 MPa and a speed of 20 to 30 Hz for 5 to 10 minutes.

[0038] In some preferred embodiments, the silicone rubber sound absorbing layer is made of silicone rubber slurry, and the silicone rubber slurry includes the following components in parts by weight: 80 to 100 parts of terminal hydroxyl polydimethylsiloxane, 8 to 10 parts of hollow glass microspheres, 10 to 14 parts of a cross-linking agent, and 0.1 to 0.15 parts of a catalyst.

[0039] In some preferred embodiments, the hydroxy-terminated polydimethylsiloxane has a dynamic viscosity of 100,000 cP to 200,000 cP at room temperature; the D90 particle size of the hollow glass microspheres in the silicone rubber slurry is 75 to 80 μm, and the density is 0.22 to 0.3 g / cm 3 ; The crosslinking agent is methyltrimethoxysiloxane and methyltriethoxysiloxane; the catalyst is an organic titanium catalyst.

[0040] In some preferred embodiments, the silicone rubber sound absorbing layer is prepared by coating silicone rubber slurry and then curing it, and the curing temperature is 50-70°C.

[0041] In some preferred embodiments, the silicone rubber slurry is prepared by mixing the components in the formula amounts.

[0042] In some preferred embodiments, the preparation method of the silicone rubber slurry is as follows: add terminal hydroxyl polydimethylsiloxane to a double planetary stirring kettle, stir for 10 to 30 minutes at a pressure of 0.04 to 0.14 MPa and a rotation speed of 20 to 30 Hz, then add hollow glass microspheres, first stir for 3 to 10 minutes at a rotation speed of 20 to 30 Hz, then stir for 10 to 30 minutes at a pressure of 0.04 to 0.14 MPa and a rotation speed of 20 to 30 Hz, then add a cross-linking agent, continue to stir for 5 to 10 minutes at a pressure of 0.04 to 0.14 MPa and a rotation speed of 20 to 30 Hz, finally add a catalyst, and continue to stir for 10 to 20 minutes at a pressure of 0.04 to 0.14 MPa and a rotation speed of 20 to 30 Hz.

[0043] In some preferred embodiments, the butyl damping layer is made of butyl rubber slurry, and the butyl rubber slurry includes the following components in parts by weight: 70 to 90 parts of butyl rubber, 30 to 50 parts of polyisobutylene, 10 to 20 parts of reinforcing filler, 10 to 15 parts of plasticizer, and 10 to 16 parts of antioxidant.

[0044] In some preferred embodiments, the butyl rubber is chlorinated butyl rubber, the number average molecular weight of the polyisobutylene is 20,000 to 45,000; the reinforcing filler is hollow glass microspheres, the D90 particle size of the reinforcing filler is 30 to 35 μm, and the density is 0.46 to 0.5 g / cm 3 The plasticizer is diisodecyl phthalate, and the antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is (0.9-1.1):(0.9-1.1). It can be understood that antioxidant 1010 is pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxy)phenylpropionate, and antioxidant 168 is tris(2,4-di-tert-butyl)phenyl phosphite.

[0045] In some preferred embodiments, the preparation method of the butyl rubber slurry is as follows: butyl rubber, polyisobutylene, plasticizer and antioxidant are mixed at 150-160°C for 2.5-3h to obtain a mixture, and then the mixture and reinforcing filler are mixed at 150-160°C for not less than 0.5h.

[0046] In some preferred embodiments, the sound insulation and noise reduction composite material further comprises an isolation layer, and the isolation layer is arranged on the surface of the butyl damping layer away from the silicone rubber sound absorbing layer.

[0047] In some preferred embodiments, the isolation layer is silicone oil paper or coated paper.

[0048] The preparation method of the sound insulation and noise reduction composite material of the present invention comprises the following steps: compounding a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorbing layer and a butyl damping layer to obtain the sound insulation and noise reduction composite material.

[0049] In some preferred embodiments, the preparation method of the sound insulation and noise reduction composite material includes the following steps: thermoplastically bonding a first polyvinyl chloride layer and a second polyvinyl chloride layer, then coating a silicone rubber slurry on the surface of the second polyvinyl chloride layer, forming a silicone rubber sound-absorbing layer after curing, and then bonding a butyl damping layer to the surface of the silicone rubber sound-absorbing layer to obtain a sound insulation and noise reduction composite material.

[0050] In some preferred embodiments, the curing temperature used in the preparation method of the sound insulation and noise reduction composite material is 50-70°C.

[0051] In some preferred embodiments, the sound insulation and noise reduction composite material also includes an isolation layer, and the preparation method of the sound insulation and noise reduction composite material also includes the following steps: after the silicone rubber sound absorbing layer is formed after curing, the isolation layer is adhered to one surface of the butyl damping layer, and the other surface is adhered to the surface of the silicone rubber sound absorbing layer to obtain the sound insulation and noise reduction composite material; or after the silicone rubber sound absorbing layer is formed after curing, one surface of the butyl damping layer is adhered to the surface of the silicone rubber sound absorbing layer, and then the isolation layer is adhered to the other surface to obtain the sound insulation and noise reduction composite material.

[0052] The technical solution of the present invention is further described below in conjunction with specific embodiments.

[0053] 1. Specific embodiments of the sound insulation and noise reduction composite material and the preparation method thereof of the present invention are as follows:

[0054] Example 1

[0055] The sound insulation and noise reduction composite material of this embodiment includes a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound-absorbing layer, a butyl damping layer and an isolation layer which are sequentially laminated. The thickness of the first polyvinyl chloride layer is 2 mm, the thickness of the second polyvinyl chloride layer is 2 mm, the thickness of the silicone rubber sound-absorbing layer is 4 mm, and the thickness of the butyl damping layer is 3 mm. The first polyvinyl chloride layer and the second polyvinyl chloride layer are both provided with a plurality of through holes, and the aperture of the through holes on the first polyvinyl chloride layer is 0.5 mm; the aperture of the through holes on the second polyvinyl chloride layer is 2 mm, and the distribution density is 199 holes / m 2 , the hole center distance between any two adjacent through holes is 5mm; the center lines of the through holes on the first polyvinyl chloride layer coincide with the center lines of the through holes on the second polyvinyl chloride layer; the length and width of the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound absorbing layer, the butyl damping layer and the isolation layer are all 60cm;

[0056] The first polyvinyl chloride layer and the second polyvinyl chloride layer in this embodiment are made of polyvinyl chloride slurry, and the polyvinyl chloride slurry includes the following components in parts by weight: 200 parts of polyvinyl chloride resin, 100 parts of plasticizer, 50 parts of viscosity reducer, 5 parts of stabilizer, 8 parts of water absorbent, 10 parts of antioxidant, 6 parts of rheological agent, and 90 parts of hollow glass microspheres; the polyvinyl chloride resin is composed of the first polyvinyl chloride resin and the second polyvinyl chloride resin, the average polymerization degree of the first polyvinyl chloride resin is 1000, the average polymerization degree of the second polyvinyl chloride resin is 750, and the mass ratio of the first polyvinyl chloride resin to the second polyvinyl chloride resin is 1:1; the plasticizer is dioctyl phthalate, the viscosity reducer is D70 solvent oil, the stabilizer is zinc oxide, the water absorbent is calcium oxide, and the antioxidant is a phosphite antioxidant (pentaerythritol diphosphite diisobutyl ester); the rheological agent is fumed silica, and the specific surface area of ​​fumed silica is 200m 2 / g; the D90 particle size of hollow glass microspheres is 30μm and the density is 0.75g / cm 3 .

[0057] The silicone rubber sound-absorbing layer in this embodiment is made of silicone rubber slurry, which includes the following components by weight: 80 parts of terminal hydroxyl polydimethylsiloxane, 8 parts of hollow glass microspheres, 10 parts of cross-linking agent, and 0.1 parts of catalyst; the dynamic viscosity of terminal hydroxyl polydimethylsiloxane at room temperature is 100,000 cP; the D90 particle size of the hollow glass microspheres is 75 μm, and the density is 0.22 g / cm 3 ; The crosslinking agent is methyl trimethoxysiloxane; the catalyst is an organic titanium catalyst, the product model is Tyzor726;

[0058] The butyl damping layer in this embodiment is made of butyl rubber slurry, which includes the following components in parts by weight: 70 parts of butyl rubber, 30 parts of polyisobutylene, 10 parts of reinforcing filler, 10 parts of plasticizer, and 10 parts of antioxidant; the butyl rubber is chlorinated butyl rubber (CIIR), and the number average molecular weight of polyisobutylene is 20,000; the reinforcing filler is hollow glass microspheres, and the D90 particle size of the reinforcing filler is 30 μm and the density is 0.46 g / cm 3 ; The plasticizer is diisodecyl phthalate, the antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is 1:1.

[0059] The preparation method of the sound insulation and noise reduction composite material of this embodiment specifically comprises the following steps:

[0060] (1) Preparation of the first polyvinyl chloride layer and the second polyvinyl chloride layer

[0061] ① Preparation of polyvinyl chloride slurry: Add plasticizer and viscosity reducer into a double planetary stirring kettle, stir at a speed of 20HZ for 5 minutes, then add polyvinyl chloride resin, continue to stir at a speed of 20HZ for 10 minutes, then add stabilizer, water absorbent and antioxidant, continue to stir at a speed of 20HZ for 10 minutes, then add rheological agent, continue to stir at a speed of 20HZ for 10 minutes, then add hollow glass microspheres, continue to stir at a speed of 20HZ for 10 minutes, finally stir the materials in the double planetary stirring kettle at a pressure of 0.04MPa and a speed of 20HZ for 5 minutes, and obtain the slurry;

[0062] ②Preparing the first polyvinyl chloride layer and the second polyvinyl chloride layer: spraying the polyvinyl chloride slurry into the mold frame, then heating at 130° C. for 0.5 h, cooling and forming to obtain a plate, and then punching holes in the plate to obtain the first polyvinyl chloride layer and the second polyvinyl chloride layer;

[0063] (2) Preparation of silicone rubber sound absorbing layer

[0064] ① Preparation of silicone rubber slurry: Add terminal hydroxyl polydimethylsiloxane into a double planetary stirring kettle, stir for 10 minutes at a pressure of 0.04 MPa and a speed of 20 Hz, then add hollow glass microspheres, first stir for 3 minutes at a speed of 20 Hz, then stir for 10 minutes at a pressure of 0.04 MPa and a speed of 20 Hz, then add a cross-linking agent, continue to stir for 5 minutes at a pressure of 0.04 MPa and a speed of 20 Hz, finally add a catalyst, continue to stir for 10 minutes at a pressure of 0.04 MPa and a speed of 20 Hz, and obtain;

[0065] ②Preparing the silicone rubber sound-absorbing layer: firstly, the first polyvinyl chloride layer and the second polyvinyl chloride layer are thermoplastically combined together, and then the silicone rubber slurry is evenly coated on the surface of the second polyvinyl chloride layer, and then it is flattened after coating, and then heated and cured at 50-70°C, and the silicone rubber slurry forms a silicone rubber sound-absorbing layer;

[0066] (3) Preparation of butyl damping layer containing isolation layer

[0067] ① Preparation of butyl rubber slurry: butyl rubber, polyisobutylene, plasticizer and antioxidant were mixed at 150°C for 2.5 hours using a kneader to obtain a mixture, and then reinforcing fillers were added and mixed at 150°C for another 0.5 hours;

[0068] ② Preparation of butyl damping layer: Cool the butyl rubber slurry to 50°C, and then press it into sheets using a double-roll mill, and cover one side with double silicone oil paper to obtain a butyl damping layer containing an isolation layer;

[0069] (4) Preparation of sound insulation and noise reduction composite materials

[0070] The butyl damping layer containing the isolation layer is attached to the silicone rubber sound-absorbing layer formed in step (2) to obtain a sound insulation and noise reduction composite material.

[0071] Example 2

[0072] The sound insulation and noise reduction composite material of this embodiment includes a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound-absorbing layer, a butyl damping layer and an isolation layer which are sequentially laminated. The thickness of the first polyvinyl chloride layer is 2 mm, the thickness of the second polyvinyl chloride layer is 2 mm, the thickness of the silicone rubber sound-absorbing layer is 3 mm, and the thickness of the butyl damping layer is 2 mm. The first polyvinyl chloride layer and the second polyvinyl chloride layer are both provided with a plurality of through holes. The aperture of the through holes on the first polyvinyl chloride layer is 1 mm. The aperture of the through holes on the second polyvinyl chloride layer is 3 mm, and the distribution density is 166 holes / m 2, the hole center distance between any two adjacent through holes is 6mm; the center lines of the through holes on the first polyvinyl chloride layer coincide with the center lines of the through holes on the second polyvinyl chloride layer; the length and width of the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound absorbing layer, the butyl damping layer and the isolation layer are all 60cm;

[0073] The first polyvinyl chloride layer and the second polyvinyl chloride layer in this embodiment are made of polyvinyl chloride slurry, and the polyvinyl chloride slurry includes the following components in parts by mass: 140 parts of polyvinyl chloride resin, 60 parts of plasticizer, 30 parts of viscosity reducer, 3 parts of stabilizer, 5 parts of water absorbent, 5 parts of antioxidant, 4 parts of rheological agent, and 40 parts of hollow glass microspheres; the polyvinyl chloride resin is composed of the first polyvinyl chloride resin and the second polyvinyl chloride resin, the average polymerization degree of the first polyvinyl chloride resin is 1100, the average polymerization degree of the second polyvinyl chloride resin is 850, and the mass ratio of the first polyvinyl chloride resin to the second polyvinyl chloride resin is 1.1:0.9; the plasticizer is dibutyl phthalate, the viscosity reducer is D60 solvent oil, the stabilizer is zinc oxide, the water absorbent is calcium oxide, and the antioxidant is a phosphite antioxidant (pentaerythritol diphosphite diisobutyl ester); the rheological agent is fumed silica, and the specific surface area of ​​fumed silica is 220m 2 / g; the D90 particle size of hollow glass microspheres is 35μm and the density is 0.8g / cm 3 .

[0074] The silicone rubber sound-absorbing layer in this embodiment is made of silicone rubber slurry, which includes the following components by weight: 90 parts of terminal hydroxyl polydimethylsiloxane, 9 parts of hollow glass microspheres, 12 parts of cross-linking agent, and 0.12 parts of catalyst; the dynamic viscosity of terminal hydroxyl polydimethylsiloxane at room temperature is 150,000 cP; the D90 particle size of the hollow glass microspheres is 80 μm, and the density is 0.3 g / cm 3 ; The crosslinking agent is methyl triethoxysiloxane; the catalyst is an organic titanium catalyst, the product model is Tyzor728;

[0075] The butyl damping layer in this embodiment is made of butyl rubber slurry, which includes the following components in parts by weight: 80 parts of butyl rubber, 40 parts of polyisobutylene, 15 parts of reinforcing filler, 12 parts of plasticizer, and 14 parts of antioxidant; the butyl rubber is chlorinated butyl rubber (CIIR), and the number average molecular weight of polyisobutylene is 45,000; the reinforcing filler is hollow glass microspheres, and the D90 particle size of the reinforcing filler is 35 μm and the density is 0.5 g / cm 3 ; The plasticizer is diisodecyl phthalate, the antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is 0.9:1.1.

[0076] The preparation method of the sound insulation and noise reduction composite material of this embodiment specifically comprises the following steps:

[0077] (1) Preparation of the first polyvinyl chloride layer and the second polyvinyl chloride layer

[0078] ① Preparation of polyvinyl chloride slurry: Add plasticizer and viscosity reducer into a double planetary stirring kettle, stir at a speed of 30 Hz for 10 min, then add polyvinyl chloride resin, continue to stir at a speed of 30 Hz for 30 min, then add stabilizer, water absorbent and antioxidant, continue to stir at a speed of 30 Hz for 30 min, then add rheological agent, continue to stir at a speed of 30 Hz for 20 min, then add hollow glass microspheres, continue to stir at a speed of 30 Hz for 20 min, finally stir the materials in the double planetary stirring kettle at a pressure of 0.14 MPa and a speed of 30 Hz for 10 min, and obtain the slurry;

[0079] ②Preparing the first polyvinyl chloride layer and the second polyvinyl chloride layer: spraying the polyvinyl chloride slurry into the mold frame, then heating at 140° C. for 1 hour, cooling and forming to obtain a plate, and then punching holes in the plate to obtain the first polyvinyl chloride layer and the second polyvinyl chloride layer;

[0080] (2) Preparation of silicone rubber sound absorbing layer

[0081] ① Preparation of silicone rubber slurry: Add terminal hydroxyl polydimethylsiloxane into a double planetary stirring kettle, stir for 30 minutes at a pressure of 0.14 MPa and a rotation speed of 30 Hz, then add hollow glass microspheres, first stir for 10 minutes at a rotation speed of 30 Hz, then stir for 30 minutes at a pressure of 0.14 MPa and a rotation speed of 30 Hz, then add a cross-linking agent, continue to stir for 10 minutes at a pressure of 0.14 MPa and a rotation speed of 30 Hz, finally add a catalyst, continue to stir for 20 minutes at a pressure of 0.14 MPa and a rotation speed of 30 Hz, and obtain;

[0082] ②Preparing the silicone rubber sound-absorbing layer: firstly, the first polyvinyl chloride layer and the second polyvinyl chloride layer are thermoplastically combined together, and then the silicone rubber slurry is evenly coated on the surface of the second polyvinyl chloride layer, and then it is scraped flat after coating, and then heated and cured at 70°C, and the silicone rubber slurry forms a silicone rubber sound-absorbing layer;

[0083] (3) Preparation of butyl damping layer containing isolation layer

[0084] ① Preparation of butyl rubber slurry: butyl rubber, polyisobutylene, plasticizer and antioxidant were mixed in a kneader at 160°C for 3 hours to obtain a mixture, and then reinforcing fillers were added and mixed at 160°C for another 0.5 hours;

[0085] ② Preparation of butyl damping layer: Cool the butyl rubber slurry to 50°C, and then press it into sheets using a double-roll mill, and cover one side with double silicone oil paper to obtain a butyl damping layer containing an isolation layer;

[0086] (4) Preparation of sound insulation and noise reduction composite materials

[0087] The butyl damping layer containing the isolation layer is attached to the silicone rubber sound-absorbing layer formed in step (2) to obtain a sound insulation and noise reduction composite material.

[0088] Example 3

[0089] The sound insulation and noise reduction composite material of this embodiment includes a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound-absorbing layer, a butyl damping layer and an isolation layer which are sequentially laminated. The thickness of the first polyvinyl chloride layer is 1 mm, the thickness of the second polyvinyl chloride layer is 3 mm, the thickness of the silicone rubber sound-absorbing layer is 2 mm, and the thickness of the butyl damping layer is 2 mm. The first polyvinyl chloride layer and the second polyvinyl chloride layer are both provided with a plurality of through holes, the aperture of the through holes on the first polyvinyl chloride layer is 0.7 mm; the aperture of the through holes on the second polyvinyl chloride layer is 2.5 mm, and the distribution density is 181 holes / m 2 , the hole center distance between any two adjacent through holes is 5.5mm; the center lines of the through holes on the first polyvinyl chloride layer coincide with the center lines of the through holes on the second polyvinyl chloride layer; the length and width of the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound absorbing layer, the butyl damping layer and the isolation layer are all 60cm;

[0090] The first polyvinyl chloride layer and the second polyvinyl chloride layer in this embodiment are made of polyvinyl chloride slurry, and the polyvinyl chloride slurry includes the following components in parts by weight: 180 parts of polyvinyl chloride resin, 80 parts of plasticizer, 40 parts of viscosity reducer, 5 parts of stabilizer, 5 parts of water absorbent, 5 parts of antioxidant, 3 parts of rheological agent, and 80 parts of hollow glass microspheres; the polyvinyl chloride resin is composed of the first polyvinyl chloride resin and the second polyvinyl chloride resin, the average polymerization degree of the first polyvinyl chloride resin is 1100, the average polymerization degree of the second polyvinyl chloride resin is 750, and the mass ratio of the first polyvinyl chloride resin to the second polyvinyl chloride resin is 0.9:1.1; the plasticizer is tributyl citrate, the viscosity reducer is D80 solvent oil, the stabilizer is zinc oxide, the water absorbent is calcium oxide, and the antioxidant is a phosphite antioxidant (pentaerythritol diphosphite diisobutyl ester); the rheological agent is fumed silica, and the specific surface area of ​​fumed silica is 260m 2 / g; the D90 particle size of hollow glass microspheres is 32μm and the density is 0.78g / cm 3 .

[0091] The silicone rubber sound-absorbing layer in this embodiment is made of silicone rubber slurry, which includes the following components in parts by weight: 100 parts of terminal hydroxyl polydimethylsiloxane, 10 parts of hollow glass microspheres, 14 parts of cross-linking agent, and 0.15 parts of catalyst; the dynamic viscosity of terminal hydroxyl polydimethylsiloxane at room temperature is 200,000 cP; the D90 particle size of the hollow glass microspheres is 77 μm, and the density is 0.25 g / cm 3 ; The crosslinking agent is methyl trimethoxysiloxane; the catalyst is an organic titanium catalyst, the product model is Tyzor9000;

[0092] The butyl damping layer in this embodiment is made of butyl rubber slurry, which includes the following components in parts by weight: 90 parts of butyl rubber, 50 parts of polyisobutylene, 20 parts of reinforcing filler, 15 parts of plasticizer, and 16 parts of antioxidant; the butyl rubber is chlorinated butyl rubber (CIIR), and the number average molecular weight of polyisobutylene is 35,000; the reinforcing filler is hollow glass microspheres, and the D90 particle size of the reinforcing filler is 32 μm and the density is 0.48 g / cm 3 ; The plasticizer is diisodecyl phthalate, the antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is 1.1:0.9.

[0093] The preparation method of the sound insulation and noise reduction composite material of this embodiment specifically comprises the following steps:

[0094] (1) Preparation of the first polyvinyl chloride layer and the second polyvinyl chloride layer

[0095] ① Preparation of polyvinyl chloride slurry: Add plasticizer and viscosity reducer into a double planetary stirring kettle, stir at a speed of 25 Hz for 7 minutes, then add polyvinyl chloride resin, continue to stir at a speed of 25 Hz for 20 minutes, then add stabilizer, water absorbent and antioxidant, continue to stir at a speed of 25 Hz for 20 minutes, then add rheological agent, continue to stir at a speed of 25 Hz for 15 minutes, then add hollow glass microspheres, continue to stir at a speed of 25 Hz for 15 minutes, finally stir the materials in the double planetary stirring kettle at a pressure of 0.1 MPa and a speed of 25 Hz for 7 minutes, and obtain the slurry;

[0096] ②Preparing the first polyvinyl chloride layer and the second polyvinyl chloride layer: spraying the polyvinyl chloride slurry into the mold frame, then heating at 135° C. for 0.8 h, cooling and forming to obtain a plate, and then punching holes in the plate to obtain the first polyvinyl chloride layer and the second polyvinyl chloride layer;

[0097] (2) Preparation of silicone rubber sound absorbing layer

[0098] ① Preparation of silicone rubber slurry: Add terminal hydroxyl polydimethylsiloxane into a double planetary stirring kettle, stir for 20 minutes at a pressure of 0.1 MPa and a speed of 25 Hz, then add hollow glass microspheres, first stir for 6 minutes at a speed of 25 Hz, then stir for 20 minutes at a pressure of 0.1 MPa and a speed of 25 Hz, then add a cross-linking agent, continue to stir for 7 minutes at a pressure of 0.1 MPa and a speed of 25 Hz, finally add a catalyst, continue to stir for 15 minutes at a pressure of 0.1 MPa and a speed of 25 Hz, and obtain;

[0099] ②Preparing the silicone rubber sound-absorbing layer: firstly, the first polyvinyl chloride layer and the second polyvinyl chloride layer are thermoplastically combined together, and then the silicone rubber slurry is evenly coated on the surface of the second polyvinyl chloride layer, and then it is flattened after coating, and then heated and cured at 60°C, and the silicone rubber slurry forms a silicone rubber sound-absorbing layer;

[0100] (3) Preparation of butyl damping layer containing isolation layer

[0101] ① Preparation of butyl rubber slurry: butyl rubber, polyisobutylene, plasticizer and antioxidant were mixed in a kneader at 155°C for 2.7 hours to obtain a mixture, and then reinforcing fillers were added and mixed at 155°C for another 0.5 hours;

[0102] ② Preparation of butyl damping layer: Cool the butyl rubber slurry to 50°C, and then press it into sheets using a double-roll mill, and cover one side with double silicone oil paper to obtain a butyl damping layer containing an isolation layer;

[0103] (4) Preparation of sound insulation and noise reduction composite materials

[0104] The butyl damping layer containing the isolation layer is attached to the silicone rubber sound-absorbing layer formed in step (2) to obtain a sound insulation and noise reduction composite material.

[0105] Comparative Example 1

[0106] The sound insulation and noise reduction composite material of this comparative example is gypsum with a thickness of 1 cm (the length and width are both 60 cm).

[0107] Comparative Example 2

[0108] The difference between the sound insulation and noise reduction composite material of this comparative example and the sound insulation and noise reduction composite material of Example 1 is that the butyl damping layer is omitted in the sound insulation and noise reduction composite material of this comparative example.

[0109] Comparative Example 3

[0110] The difference between the sound insulation and noise reduction composite material of this comparative example and the sound insulation and noise reduction composite material of Example 1 is that the silicone rubber sound absorbing layer is omitted in the sound insulation and noise reduction composite material of this comparative example.

[0111] Comparative Example 4

[0112] The difference between the sound insulation and noise reduction composite material of this comparative example and the sound insulation and noise reduction composite material of Example 1 is that the silicone rubber sound absorbing layer and the butyl damping layer are omitted in the sound insulation and noise reduction composite material of this comparative example.

[0113] Comparative Example 5

[0114] The difference between the sound insulation and noise reduction composite material of this comparative example and the sound insulation and noise reduction composite material of Example 1 is that the first polyvinyl chloride layer in the sound insulation and noise reduction composite material of this comparative example is the same as the second polyvinyl chloride layer in the sound insulation and noise reduction composite material of Example 1.

[0115] Comparative Example 6

[0116] The only difference between the sound insulation and noise reduction composite material of this comparative example and the sound insulation and noise reduction composite material of Example 1 is that the sound insulation and noise reduction composite material of this comparative example includes a silicone rubber sound-absorbing layer, a first polyvinyl chloride layer, a second polyvinyl chloride layer and a butyl damping layer which are laminated together in sequence, and the silicone rubber sound-absorbing layer, the first polyvinyl chloride layer, the second polyvinyl chloride layer and the butyl damping layer in the sound insulation and noise reduction composite material of this comparative example are respectively the same as the silicone rubber sound-absorbing layer, the first polyvinyl chloride layer, the second polyvinyl chloride layer and the butyl damping layer in the sound insulation and noise reduction composite material of Example 1.

[0117] 2. Specific examples of the application of the sound insulation and noise reduction composite material of the present invention as a sound insulation and noise reduction sticker are as follows:

[0118] Any of the sound insulation and noise reduction composite materials of Examples 1-3 can be used as a sound insulation and noise reduction patch.

[0119] Experimental example

[0120] In order to evaluate the sound insulation and noise reduction effect of the sound insulation and noise reduction composite materials of each embodiment and comparative example, the sound insulation and noise reduction composite materials are made into a regular hexahedron structure (a sound sensor is placed at the center of the regular hexahedron structure) and placed on the floor, and then a 500g iron ball is made to fall freely to the floor from a certain distance at a height of 30cm, and finally the maximum noise value recorded by the sound sensor inside the regular hexahedron structure is read. The method of making the sound insulation and noise reduction composite material into a regular hexahedron structure is as follows: 6 pieces of the same sound insulation and noise reduction composite materials are bonded to each other as six faces in sequence to form a regular hexahedron structure. The method of bonding different sound insulation and noise reduction composite materials to form a regular hexahedron structure is the same. During bonding, ensure that the first polyvinyl chloride layer in the sound insulation and noise reduction composite materials of Examples 1-3 and Comparative Examples 2-6 is located outside the regular hexahedron structure. When testing the regular hexahedron structure made of different sound insulation and noise reduction composite materials, the iron ball lands at the same point, and the regular hexahedron structure is in the same position. During the test, ensure that there is no other noise to avoid interfering with the experimental results. The experimental results are shown in Table 1.

[0121] Table 1 Maximum noise values ​​recorded by the sound sensor inside the regular hexahedron structure made of the sound insulation and noise reduction composite materials of each embodiment and comparative example

[0122] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 75dB 82dB 85dB 106dB 98dB 105dB 118dB 90dB 90dB

[0123] It can be seen from Table 1 that the maximum noise values ​​recorded by the sound sensors inside the regular hexahedron structures made of the sound insulation and noise reduction composite materials of Examples 1-3 are all no more than 85dB, and the maximum noise values ​​recorded by the sound sensors inside the regular hexahedron structures made of the sound insulation and noise reduction composite materials of Comparative Examples 1-6 are all greater than 90dB, indicating that the use of a gypsum layer (Comparative Example 1), omitting the butyl damping layer in the sound insulation and noise reduction composite material (Comparative Example 2), omitting the silicone rubber sound absorbing layer in the sound insulation and noise reduction composite material (Comparative Example 3), omitting the silicone rubber sound absorbing layer and Butyl damping layer (Comparative Example 4), setting the first polyvinyl chloride layer and the second polyvinyl chloride layer in the sound insulation and noise reduction composite material to be the same (Comparative Example 5), replacing the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound-absorbing layer, the butyl damping layer and the isolation layer that are sequentially bonded in the sound insulation and noise reduction composite material with the silicone rubber sound-absorbing layer, the first polyvinyl chloride layer, the second polyvinyl chloride layer and the butyl damping layer that are sequentially bonded, all reduce the sound insulation and noise reduction performance of the sound insulation and noise reduction composite material, proving that the sound insulation and noise reduction composite material of the present invention has better sound insulation and noise reduction performance.

Claims

1. A sound insulation and noise reduction composite material, characterized in that: The invention comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound-absorbing layer and a butyl damping layer which are laminated in sequence. The thicknesses of the first polyvinyl chloride layer, the second polyvinyl chloride layer, the silicone rubber sound-absorbing layer and the butyl damping layer are 1-2 mm, 2-3 mm, 2-4 mm and 2-3 mm respectively. The first polyvinyl chloride layer is provided with a plurality of through holes with a diameter of 0.5-1 mm, the second polyvinyl chloride layer is provided with a plurality of through holes with a diameter of 2-3 mm, and the center lines of the through holes on the first polyvinyl chloride layer coincide with the center lines of the through holes on the second polyvinyl chloride layer.

2. The sound insulation and noise reduction composite material according to claim 1, characterized in that: The distribution density of through holes on the second PVC layer is 166 to 199 per m 2 The center distance between any two adjacent through holes on the second polyvinyl chloride layer is 5 to 6 mm.

3. The sound insulation and noise reduction composite material according to claim 1 or 2, characterized in that: The first polyvinyl chloride layer and the second polyvinyl chloride layer are independently made of polyvinyl chloride slurry, and the polyvinyl chloride slurry includes the following components in parts by weight: 140 to 200 parts of polyvinyl chloride resin, 60 to 100 parts of plasticizer, 30 to 50 parts of viscosity reducer, 1 to 5 parts of stabilizer, 2 to 8 parts of water absorbent, 3 to 10 parts of antioxidant, 2 to 6 parts of rheological agent, and 40 to 90 parts of hollow glass microspheres.

4. The sound insulation and noise reduction composite material according to claim 3, characterized in that: The polyvinyl chloride resin includes a first polyvinyl chloride resin and a second polyvinyl chloride resin, the first polyvinyl chloride resin has an average polymerization degree of 1000-1100, the second polyvinyl chloride resin has an average polymerization degree of 750-850, and the mass ratio of the first polyvinyl chloride resin to the second polyvinyl chloride resin is (0.9-1.1):(0.9-1.1).

5. The sound insulation and noise reduction composite material according to claim 3, characterized in that: The plasticizer is selected from one or any combination of dioctyl phthalate, dibutyl phthalate, tributyl citrate, diethylene glycol dibenzoate, and acetyl tributyl citrate; the viscosity reducer is dearomatized solvent oil; the stabilizer is zinc oxide; the water absorbent is calcium oxide; the antioxidant is a phosphite antioxidant; the rheological agent is fumed silica, and the specific surface area of ​​the fumed silica is 200 to 260 m 2 / g; the D90 particle size of the hollow glass microspheres in the polyvinyl chloride slurry is 30-35 μm, and the density is 0.75-0.8 g / cm 3 .

6. The sound insulation and noise reduction composite material according to claim 3, characterized in that: The preparation method of the first polyvinyl chloride layer and the second polyvinyl chloride layer is as follows: spraying polyvinyl chloride slurry into a mold, then heating at 130-140° C. for 0.5-1 h, cooling and forming to obtain a plate, and then punching holes in the plate to obtain the plate.

7. The sound insulation and noise reduction composite material according to claim 1, characterized in that: The silicone rubber sound-absorbing layer is made of silicone rubber slurry, which includes the following components in parts by weight: 80 to 100 parts of terminal hydroxyl polydimethylsiloxane, 8 to 10 parts of hollow glass microspheres, 10 to 14 parts of a cross-linking agent, and 0.1 to 0.15 parts of a catalyst.

8. The sound insulation and noise reduction composite material according to claim 7, characterized in that: The dynamic viscosity of the terminal hydroxyl polydimethylsiloxane at room temperature is 100,000 cP to 200,000 cP; the D90 particle size of the hollow glass microspheres in the silicone rubber slurry is 75 to 80 μm, and the density is 0.22 to 0.3 g / cm 3 ; The crosslinking agent is methyltrimethoxysiloxane and / or methyltriethoxysiloxane; the catalyst is an organic titanium catalyst.

9. The sound insulation and noise reduction composite material according to claim 7 or 8, characterized in that: The silicone rubber sound-absorbing layer is prepared by coating silicone rubber slurry and then curing it, and the curing temperature is 50-70°C.

10. The sound insulation and noise reduction composite material according to claim 1, characterized in that: The butyl damping layer is made of butyl rubber slurry, and the butyl rubber slurry includes the following components in parts by mass: 70-90 parts of butyl rubber, 30-50 parts of polyisobutylene, 10-20 parts of reinforcing filler, 10-15 parts of plasticizer, and 10-16 parts of antioxidant.

11. The sound insulation and noise reduction composite material according to claim 10, characterized in that: The butyl rubber is chlorinated butyl rubber, the number average molecular weight of the polyisobutylene is 20,000-45,000; the reinforcing filler is hollow glass microspheres, the D90 particle size of the reinforcing filler is 30-35 μm, and the density is 0.46-0.5 g / cm 3 ; The plasticizer is diisodecyl phthalate, and the antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is (0.9-1.1):(0.9-1.1).

12. The sound insulation and noise reduction composite material according to claim 10 or 11, characterized in that: The preparation method of the butyl rubber slurry is as follows: butyl rubber, polyisobutylene, plasticizer and antioxidant are mixed at 150-160° C. for 2.5-3 hours to obtain a mixture, and then the mixture and reinforcing filler are mixed at 150-160° C. for not less than 0.5 hour.

13. A method for preparing the sound insulation and noise reduction composite material according to any one of claims 1 to 12, characterized in that: The method comprises the following steps: compounding a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound-absorbing layer and a butyl damping layer to obtain a sound-insulating and noise-reducing composite material.

14. Use of the sound insulation and noise reduction composite material according to any one of claims 1 to 12 as a sound insulation and noise reduction sticker.