Automobile sound insulation carpet processing technology and automobile carpet

Abstract

The invention discloses an automobile sound insulation carpet processing technology and an automobile carpet. The automobile sound insulation carpet processing technology comprises the following steps: S1, material selection; s2, mixing the materials; s3, material cutting; s4, bonding; s5, detecting and sub-packaging: preparing the following materials: cotton cloth, ethylene propylene diene monomer, natural rubber, a foam board, a plasticizer, an accelerant, an adhesive, polytetrafluoroethylene and a filler, the plasticizer is prepared by mixing fatty acid ester, phthalate and non-phthalate according to a ratio of (1-8): (2-8): (1-5), the accelerant is prepared by mixing zinc chloride, magnesium chloride and diaminobenzene, and the filler is prepared by mixing sodium hydroxide, sodium hydroxide and sodium hydroxide; the ratio of the modified rubber to the foam board is (2-5): (1-9): (1-6), the sound insulation performance of the carpet can be enhanced by adding the modified rubber and the foam board to the inner side of the carpet, the comfort and the sound effect can be greatly improved, the driving and riding experience is remarkably improved, and the top of the carpet is coated with polytetrafluoroethylene, so that the carpet has extremely low surface energy and excellent hydrophobicity and pollution resistance, and is suitable for being popularized and applied. And the cleanliness of the carpet is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile carpets, and in particular to a processing technology for automobile sound insulation carpets and automobile carpets. Background Art

[0002] With the rapid development of my country's automobile industry, people have paid more attention to the acoustic performance of automobiles. The noise sources such as automobile engine, transmission system and exhaust system are directly connected to the automobile chassis. When the car is driving, the noise generated by these components will be transmitted directly into the car through the chassis, forming noise pollution in the car and affecting the comfort of the passengers.

[0003] Since the noise source outside the car is mainly transmitted to the car through the car chassis, the carpet in the car compartment is the most direct and effective part to reduce the noise inside the car. The existing car carpet is mainly composed of cotton felt and fabric surface material. The fabric surface material is heated and pre-embedded with cotton felt for molding. The cotton felt mainly plays a role of sound absorption, and the fabric surface material mainly plays a role of beauty and decoration.

[0004] The invention with announcement number: CN114701183A relates to the field of automobile supplies, more specifically, a car carpet processing technology and a car carpet. The processing technology includes: S1: placing multiple metal plates with curved edges side by side on a processing device so that there is a gap between two adjacent metal plates; S2: putting two rubber sleeves on the left ends of multiple metal plates and the right ends of multiple metal plates respectively; S3: connecting the two ends of each metal plate with the two rubber sleeves through rivets; S4: processing strip grooves on multiple curved edges; S5: bonding multiple metal plates to a carpet substrate. A car carpet includes metal plates, rubber sleeves, rivets, strip grooves and curved edges. Multiple metal plates are placed side by side, there is a gap between two adjacent metal plates, two rubber sleeves are respectively put on the left ends of multiple metal plates and the right ends of multiple metal plates, the rubber sleeves are connected to the metal plates through rivets, and each metal plate is provided with a curved edge on the upper side. A non-slip carpet can be processed.

[0005] The announcement number is CN108247938A. A processing technology for automobile front wall sound insulation pads, firstly heat the thermoplastic fiber felt and EVA material to make them soft; then place the heated thermoplastic fiber felt and EVA material in a foaming mold, and a cutting knife for cutting products is provided in the foaming mold; compressed air is introduced into the side of the foaming mold that is consistent with the shape of the automobile sheet metal part, or / and the other side of the foaming mold is vacuumed; after the thermoplastic fiber felt and EVA material are formed, polyurethane foam material is poured into the foaming mold for foaming processing. The processing technology only needs to use a single mold to complete the production of automobile front wall sound insulation pads, and the process can improve production efficiency, product dimensional accuracy and product quality, while reducing the need for mold use and reducing production costs.

[0006] However, the car carpet in the prior art has a poor sound insulation effect and cannot effectively reduce the noise generated by the car chassis. Therefore, the present invention proposes a car sound insulation carpet processing technology and a car carpet to solve the above problem. Summary of the invention

[0007] Based on the technical problem that the sound insulation effect of automobile carpet is poor and the noise generated by the automobile chassis cannot be effectively reduced in the background technology, the present invention proposes a processing technology for automobile sound insulation carpet and an automobile carpet.

[0008] The present invention provides a process for processing automobile sound insulation carpet, comprising the following raw materials in parts: S1: Material selection; S2: material mixing; S3: Material cutting; S4: bonding; S5: Detection and packaging.

[0009] Preferably, in the step S1, the following materials are prepared: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler, the plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 1-8:2-8:1-5, the accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 2-5:1-9:1-6, the adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 3-8:2-6:2-8, the filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:2, and the EPDM rubber is ethylene A copolymer of olefins, propylene and a small amount of non-conjugated dienes, is a type of EPDM rubber. Because its main chain is composed of chemically stable saturated hydrocarbons and only contains unsaturated double bonds in the side chains, it has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in automotive parts, building waterproof materials, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields. Both natural rubber and EPDM rubber have good sound insulation effects. Plasticizers are used to improve the flexibility and processing properties of rubber. Accelerators are used to accelerate vulcanization reactions and improve processing efficiency. Adhesives are used to improve the adhesion of rubber to other materials, such as when laminating rubber or bonding with fabrics.

[0010] Preferably, in the step S2, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler are placed inside a mixer for stirring, the temperature of the mixer is adjusted to 50-80 degrees Celsius, the speed is 50-150 revolutions per minute, stirring for 10-30 minutes, poured into a mold for vulcanization, and a modified rubber sheet is obtained after vulcanization. Vulcanization is also called crosslinking and aging. Crosslinking aids such as vulcanizing agents and accelerators are added to rubber to convert linear macromolecules into a three-dimensional network structure under certain temperature and pressure conditions. Since sulfur was used to realize the crosslinking of natural rubber at the earliest, it is called vulcanization, which is named because the initial natural rubber products were crosslinked with sulfur as a crosslinking agent. With the development of the rubber industry, multiple non-sulfur crosslinking agents can be used for crosslinking, so the more scientific meaning of vulcanization should be "crosslinking" or "bridging", that is, the process of forming a network polymer by crosslinking of linear macromolecules.

[0011] Preferably, in the steps S3 and S4, the modified rubber sheet, foam board and cotton cloth are made to conform to the size of the automobile chassis by a machine, and then the foam board, modified rubber sheet and cotton cloth are bonded by glue, and finally polytetrafluoroethylene is applied on the top of the cotton cloth to obtain a sound insulation carpet. Polytetrafluoroethylene has extremely low surface energy, excellent hydrophobicity and stain resistance, and is used to reduce the adhesion of grease to improve stain resistance and extend service life.

[0012] Preferably, in step S5, the sound insulation effect and installation suitability are checked, necessary adjustments are made, and the finished carpet is packaged for transportation and installation. The present invention also proposes a car sound insulation carpet, comprising a main body, wherein the main body comprises: an oleophobic layer, a top layer, a first sound insulation layer, a second sound insulation layer and a bottom layer, wherein the second sound insulation layer is bonded to the top of the bottom layer, the first sound insulation layer is bonded to the top of the second sound insulation layer, the top layer is bonded to the top of the second sound insulation layer, and the oleophobic layer is coated on the top of the top layer.

[0013] Preferably, the specific material of the oleophobic layer is polytetrafluoroethylene.

[0014] Furthermore, it is used to reduce the adhesion of grease to improve stain resistance and extend service life.

[0015] Preferably, the specific material of the first sound insulation layer is a foam board, and the foam board is used to increase the sound insulation of the carpet.

[0016] Preferably, the specific material of the second sound insulation layer is modified rubber.

[0017] Furthermore, modified rubber is used to enhance the sound insulation effect of the carpet.

[0018] Preferably, the top layer and the bottom layer are made of cotton cloth.

[0019] Further, cotton is used to increase the comfort of the carpet.

[0020] Beneficial effects of the present invention: The present invention can enhance the sound insulation of the carpet by adding modified rubber and foam board on the inner side of the carpet, which can greatly improve the comfort and sound effects, and significantly improve the driving and riding experience. In addition, the top of the carpet is coated with polytetrafluoroethylene, which has extremely low surface energy, excellent hydrophobicity and stain resistance, and increases the cleanliness of the carpet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The working flow chart proposed by the present invention.

[0022] Figure 2 It is a front cross-sectional schematic diagram proposed by the present invention.

[0023] In the figure: 1, bottom layer; 2, first sound insulation layer; 3, second sound insulation layer; 4, top layer; 5, oleophobic layer. DETAILED DESCRIPTION

[0024] The present invention will be further explained below in conjunction with specific embodiments.

[0025] Reference Figure 1 , Embodiment 1 This embodiment provides a car sound insulation carpet processing technology, including the following steps: S1: Material selection, prepare the following materials: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler. The plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 1:2:1. The accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 2:1:1. The adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 3:2:2. The filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:2. EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated dienes. It is a type of ethylene-propylene rubber, because its main chain is composed of chemical It is composed of stable saturated hydrocarbons and contains unsaturated double bonds only in the side chain. Therefore, it has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in automotive parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields. Natural rubber and EPDM rubber both have good sound insulation effects. Plasticizers are used to improve the flexibility and processing properties of rubber. Accelerators are used to accelerate the vulcanization reaction and improve processing efficiency. Adhesives are used to improve the adhesion of rubber to other materials, such as when laminating rubber or bonding with fabrics. Polytetrafluoroethylene has extremely low surface energy, excellent hydrophobicity and stain resistance, and is used to reduce the adhesion of grease to improve stain resistance and extend service life. S2: Mix the materials. Put EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler into the inner side of the mixer for stirring. Adjust the temperature of the mixer to 65 degrees Celsius and the speed to 100 rpm. Stir for 15 minutes and pour into the mold for vulcanization. After vulcanization, the modified rubber sheet is obtained. Vulcanization is also called cross-linking and aging. It is a process of adding cross-linking aids such as vulcanizers and accelerators to rubber to transform linear macromolecules into three-dimensional network structures under certain temperature and pressure conditions. Since sulfur was first used to achieve cross-linking of natural rubber, it is called vulcanization. It is named because the original natural rubber products were cross-linked with sulfur as a cross-linking agent. With the development of the rubber industry, a variety of non-sulfur cross-linking agents can be used for cross-linking. Therefore, the more scientific meaning of vulcanization should be "cross-linking" or "bridging", that is, the process of forming a network polymer through cross-linking of linear polymers; S3: Material cutting, using machines to cut modified rubber sheets, foam boards and cotton cloth into the size of the car chassis; S4: bonding, and then using glue to bond the foam board, the modified rubber sheet and the cotton cloth, and finally applying polytetrafluoroethylene on the top of the cotton cloth to make a sound insulation carpet; S5: Test and pack, check the sound insulation effect and installation suitability, make necessary adjustments, pack the finished carpet, and prepare for transportation and installation.

[0026] Reference Figure 1 , Embodiment 2 This embodiment provides a car sound insulation carpet processing technology, including the following steps: S1: Material selection, prepare the following materials: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler. The plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 2:7:4. The accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 4:4:5. The adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 4:5:7. The filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:2. EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated dienes. It is a type of ethylene-propylene rubber, because its main chain is composed of chemical It is composed of stable saturated hydrocarbons and contains unsaturated double bonds only in the side chain. Therefore, it has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in automotive parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields. Natural rubber and EPDM rubber both have good sound insulation effects. Plasticizers are used to improve the flexibility and processing properties of rubber. Accelerators are used to accelerate the vulcanization reaction and improve processing efficiency. Adhesives are used to improve the adhesion of rubber to other materials, such as when laminating rubber or bonding with fabrics. Polytetrafluoroethylene has extremely low surface energy, excellent hydrophobicity and stain resistance, and is used to reduce the adhesion of grease to improve stain resistance and extend service life. S2: Mix the materials. Put EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler into the inner side of the mixer for stirring. Adjust the temperature of the mixer to 60 degrees Celsius and the speed to 100 rpm. Stir for 20 minutes and pour into the mold for vulcanization. After vulcanization, the modified rubber sheet is obtained. Vulcanization is also called cross-linking and aging. It is a process of adding cross-linking aids such as vulcanizers and accelerators to rubber to transform linear macromolecules into three-dimensional network structures under certain temperature and pressure conditions. Since sulfur was first used to achieve cross-linking of natural rubber, it is called vulcanization. It is named because the original natural rubber products were cross-linked with sulfur as a cross-linking agent. With the development of the rubber industry, a variety of non-sulfur cross-linking agents can be used for cross-linking. Therefore, the more scientific meaning of vulcanization should be "cross-linking" or "bridging", that is, the process of forming a network polymer through cross-linking of linear polymers; S3: Material cutting, using machines to cut modified rubber sheets, foam boards and cotton cloth into the size of the car chassis; S4: bonding, and then using glue to bond the foam board, the modified rubber sheet and the cotton cloth, and finally applying polytetrafluoroethylene on the top of the cotton cloth to make a sound insulation carpet; S5: Test and pack, check the sound insulation effect and installation suitability, make necessary adjustments, pack the finished carpet, and prepare for transportation and installation.

[0027] Reference Figure 1 , Embodiment 3 This embodiment provides a car sound insulation carpet processing technology, including the following steps: S1: Material selection, prepare the following materials: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler. The plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 6:5:3. The accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 4:8:4. The adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 5:4:3. The filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:2. EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated dienes. It is a type of ethylene-propylene rubber, because its main chain is composed of chemical It is composed of stable saturated hydrocarbons and contains unsaturated double bonds only in the side chain. Therefore, it has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in automotive parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields. Natural rubber and EPDM rubber both have good sound insulation effects. Plasticizers are used to improve the flexibility and processing properties of rubber. Accelerators are used to accelerate the vulcanization reaction and improve processing efficiency. Adhesives are used to improve the adhesion of rubber to other materials, such as when laminating rubber or bonding with fabrics. Polytetrafluoroethylene has extremely low surface energy, excellent hydrophobicity and stain resistance, and is used to reduce the adhesion of grease to improve stain resistance and extend service life. S2: Mix the materials. Put EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler into the inner side of the mixer for stirring. Adjust the temperature of the mixer to 75 degrees Celsius and the speed to 140 revolutions per minute. Stir for 25 minutes and pour into the mold for vulcanization. After vulcanization, the modified rubber sheet is obtained. Vulcanization is also called cross-linking and aging. It is a process of adding cross-linking aids such as vulcanizers and accelerators to rubber to transform linear macromolecules into three-dimensional network structures under certain temperature and pressure conditions. Since sulfur was first used to achieve cross-linking of natural rubber, it is called vulcanization. It is named because the original natural rubber products were cross-linked with sulfur as a cross-linking agent. With the development of the rubber industry, a variety of non-sulfur cross-linking agents can be used for cross-linking. Therefore, the more scientific meaning of vulcanization should be "cross-linking" or "bridging", that is, the process of forming a network polymer through cross-linking of linear polymers; S3: Material cutting, using machines to cut modified rubber sheets, foam boards and cotton cloth into the size of the car chassis; S4: bonding, and then using glue to bond the foam board, the modified rubber sheet and the cotton cloth, and finally applying polytetrafluoroethylene on the top of the cotton cloth to make a sound insulation carpet; S5: Test and pack, check the sound insulation effect and installation suitability, make necessary adjustments, pack the finished carpet, and prepare for transportation and installation.

[0028] Reference Figure 1 , Embodiment 4 This embodiment provides a car sound insulation carpet processing technology, including the following steps: S1: Material selection, prepare the following materials: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler. The plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 5:5:3. The accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 3:4:2. The adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 5:4:3. The filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:2. EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated dienes. It is a type of ethylene-propylene rubber, because its main chain is composed of chemical It is composed of stable saturated hydrocarbons and contains unsaturated double bonds only in the side chain. Therefore, it has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in automotive parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields. Natural rubber and EPDM rubber both have good sound insulation effects. Plasticizers are used to improve the flexibility and processing properties of rubber. Accelerators are used to accelerate the vulcanization reaction and improve processing efficiency. Adhesives are used to improve the adhesion of rubber to other materials, such as when laminating rubber or bonding with fabrics. Polytetrafluoroethylene has extremely low surface energy, excellent hydrophobicity and stain resistance, and is used to reduce the adhesion of grease to improve stain resistance and extend service life. S2: Mix the materials. Put EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler into the inner side of the mixer for stirring. Adjust the temperature of the mixer to 60 degrees Celsius and the speed to 120 revolutions per minute. Stir for 25 minutes and pour into the mold for vulcanization. After vulcanization, the modified rubber sheet is obtained. Vulcanization is also called cross-linking and aging. It is a process of adding cross-linking aids such as vulcanizers and accelerators to rubber to transform linear macromolecules into three-dimensional network structures under certain temperature and pressure conditions. Since sulfur was first used to achieve cross-linking of natural rubber, it is called vulcanization. It is named because the original natural rubber products were cross-linked with sulfur as a cross-linking agent. With the development of the rubber industry, a variety of non-sulfur cross-linking agents can be used for cross-linking. Therefore, the more scientific meaning of vulcanization should be "cross-linking" or "bridging", that is, the process of forming a network polymer through cross-linking of linear polymers; S3: Material cutting, using machines to cut modified rubber sheets, foam boards and cotton cloth into the size of the car chassis; S4: bonding, and then using glue to bond the foam board, the modified rubber sheet and the cotton cloth, and finally applying polytetrafluoroethylene on the top of the cotton cloth to make a sound insulation carpet; S5: Test and pack, check the sound insulation effect and installation suitability, make necessary adjustments, pack the finished carpet, and prepare for transportation and installation.

[0029] Reference Figure 1 Embodiment 5 This embodiment provides a car sound insulation carpet processing technology, including the following steps: S1: Material selection, prepare the following materials: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler. The plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 8:8:5. The accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 5:9:6. The adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 8:6:8. The filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:2. EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated dienes. It is a type of ethylene-propylene rubber, because its main chain is composed of chemical It is composed of stable saturated hydrocarbons and contains unsaturated double bonds only in the side chain. Therefore, it has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in automotive parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields. Natural rubber and EPDM rubber both have good sound insulation effects. Plasticizers are used to improve the flexibility and processing properties of rubber. Accelerators are used to accelerate the vulcanization reaction and improve processing efficiency. Adhesives are used to improve the adhesion of rubber to other materials, such as when laminating rubber or bonding with fabrics. Polytetrafluoroethylene has extremely low surface energy, excellent hydrophobicity and stain resistance, and is used to reduce the adhesion of grease to improve stain resistance and extend service life. S2: Mix the materials. Put EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler into the inner side of the mixer for stirring. Adjust the temperature of the mixer to 80 degrees Celsius and the speed to 150 revolutions per minute. Stir for 30 minutes and pour into the mold for vulcanization. After vulcanization, the modified rubber sheet is obtained. Vulcanization is also called cross-linking and aging. It is a process of adding cross-linking aids such as vulcanizers and accelerators to rubber to transform linear macromolecules into three-dimensional network structures under certain temperature and pressure conditions. Since sulfur was first used to achieve cross-linking of natural rubber, it is called vulcanization. It is named because the original natural rubber products were cross-linked with sulfur as a cross-linking agent. With the development of the rubber industry, a variety of non-sulfur cross-linking agents can be used for cross-linking. Therefore, the more scientific meaning of vulcanization should be "cross-linking" or "bridging", that is, the process of forming a network polymer through cross-linking of linear polymers; S3: Material cutting, using machines to cut modified rubber sheets, foam boards and cotton cloth into the size of the car chassis; S4: bonding, and then using glue to bond the foam board, the modified rubber sheet and the cotton cloth, and finally applying polytetrafluoroethylene on the top of the cotton cloth to make a sound insulation carpet; S5: Test and pack, check the sound insulation effect and installation suitability, make necessary adjustments, pack the finished carpet, and prepare for transportation and installation.

[0030] Working principle: The second sound insulation layer is bonded to the top of the bottom layer, the first sound insulation layer is bonded to the top of the second sound insulation layer, the top layer is bonded to the top of the second sound insulation layer, and the oleophobic layer is applied to the top of the top layer. The specific material of the oleophobic layer is polytetrafluoroethylene, which is used to reduce the adhesion of grease to improve stain resistance and extend service life. The specific material of the first sound insulation layer is foam board, which is used to increase the sound insulation of the carpet. The specific material of the second sound insulation layer is modified rubber, which is used to enhance the sound insulation effect of the carpet. The specific materials of the top and bottom layers are both cotton cloth, which is used to increase the comfort of the carpet.

[0031] Comparing the conventional car sound insulation carpet with the car sound insulation carpet prepared in Examples 1 to 5, the car sound insulation carpet prepared in Examples 1 to 5 is as follows: Example one two three Four five Enhanced mute effect 32% 35% 31% 30% 29% Enhanced comfort 15% 22% 18% 20% 17% It can be seen from the above table that the processing technology of the automobile sound insulation carpet and the automobile carpet proposed by the present invention have obvious improvements, and implementation 2 is the best embodiment.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A process for processing automobile sound insulation carpet, characterized in that: The following steps are involved: S1: Material selection; S2: material mixing; S3: Material cutting; S4: bonding; S5: Detection and packaging.

2. The automotive sound insulation carpet processing technology according to claim 1 is characterized in that: In the step S1, the following materials are prepared: cotton cloth, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive, polytetrafluoroethylene and filler, the plasticizer is a mixture of fatty acid ester, phthalate and non-phthalate, and the ratio is 1-8:2-8:1-5, the accelerator is a mixture of zinc chloride, magnesium chloride and diaminobenzene, and the ratio is 2-5:1-9:1-6, the adhesive is a mixture of rosin wax, benzophenone and vinylamine, and the ratio is 3-8:2-6:2-8, and the filler is glass fiber and carbon fiber, and the ratio of glass fiber to carbon fiber is 8:

2.

3. The automotive sound insulation carpet processing technology according to claim 1 is characterized in that: In the step S2, EPDM rubber, natural rubber, foam board, plasticizer, accelerator, adhesive and filler are placed inside a mixer for stirring, the temperature of the mixer is adjusted to 50-80 degrees Celsius, the speed is 50-150 revolutions per minute, stirring for 10-30 minutes, pouring into a mold for vulcanization, and obtaining a modified rubber sheet after vulcanization.

4. The automotive sound insulation carpet processing technology according to claim 1 is characterized in that: In the steps S3 and S4, the modified rubber sheet, foam board and cotton cloth are made to conform to the size of the automobile chassis by a machine, and then the foam board, modified rubber sheet and cotton cloth are bonded by glue, and finally polytetrafluoroethylene is applied on the top of the cotton cloth to obtain a sound insulation carpet.

5. The automotive sound insulation carpet processing technology according to claim 1 is characterized in that: In step S5, the sound insulation effect and installation suitability are checked, necessary adjustments are made, and the completed carpet is packaged for transportation and installation.

6. A car sound insulation carpet, comprising a main body, characterized in that: The main body includes: an oleophobic layer, a top layer, a first sound insulation layer, a second sound insulation layer and a bottom layer, wherein the second sound insulation layer is bonded to the top of the bottom layer, the first sound insulation layer is bonded to the top of the second sound insulation layer, the top layer is bonded to the top of the second sound insulation layer, and the oleophobic layer is coated on the top of the top layer.

7. The car sound insulation carpet according to claim 6, characterized in that: The specific material of the oleophobic layer is polytetrafluoroethylene.

8. The car sound insulation carpet according to claim 6, characterized in that: The specific material of the first sound insulation layer is a foam board.

9. The car sound insulation carpet according to claim 6, characterized in that: The specific material of the second sound insulation layer is modified rubber.

10. The car sound insulation carpet according to claim 6, characterized in that: The specific materials of the top layer and the bottom layer are both cotton cloth.

Images