CN210453981U - Polyurethane sound-proof board for automobile parts - Google Patents
Polyurethane sound-proof board for automobile parts Download PDFInfo
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- CN210453981U CN210453981U CN201920524359.7U CN201920524359U CN210453981U CN 210453981 U CN210453981 U CN 210453981U CN 201920524359 U CN201920524359 U CN 201920524359U CN 210453981 U CN210453981 U CN 210453981U
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- polyurethane
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Abstract
The application provides a polyurethane acoustic celotex board that automobile parts used, including the honeycomb panel, the honeycomb cavity intussuseption of honeycomb panel fill and have sound absorbing material, the upper and lower both sides face of honeycomb panel cover respectively and have the fine felt of glass, the honeycomb panel that covers the fine felt of glass forms one deck confined base plate after foaming in the polyurethane spraying mould, the surface of base plate can have the skin according to the different demand cladding of customer. The utility model provides a car trunk polyurethane acoustic celotex board, in will inhaling the sound material and inlay honeycomb aluminum plate's honeycomb space, just in time make full use of space by a wide margin improvement acoustic effect. The embedded embedding of the sound-absorbing material solves the problem of poor acoustics of the cover plate under the condition of not changing the structural strength and the bearing performance of a product, in particular to the problem of low-frequency noise of a motor of an electric vehicle. Can be improved in new products.
Description
Technical Field
The application relates to a polyurethane sound-insulating board for automobile parts.
Background
In order to meet the requirements of high bearing capacity and light weight, a cover plate of an automobile trunk, a hat rack, a back seat back plate, a rear storage plate and the like are generally formed in a rear mold by spraying polyurethane or composite PP glass fiber felt by using a hollow paper honeycomb plate and the glass fiber felt. The thickness of the product is basically 10-30 mm to meet different bearing requirements, and for the car trunk or the like with small space, the thickness of 10-30 mm occupies a lot. In order to prevent the performance of the paper honeycomb plate from being reduced due to moisture, the PU glass fiber or the PP glass fiber seals the hollow honeycomb, but the sound absorption effect of the cover plate is reduced. For hybrid and electric vehicles, where the battery and motor are below the trunk, the low frequency noise pair of the motor and battery can be easily transmitted to the passenger compartment. The totally-enclosed hard cover plate has good sound insulation performance, but cannot block low-frequency noise.
Disclosure of Invention
The technical problem that this application will be solved provides the polyurethane acoustic celotex board that automobile parts that acoustic performance is high used.
In order to solve the technical problem, the application provides a polyurethane acoustic celotex board that automobile parts that acoustic performance is high was used, polyurethane acoustic celotex board that automobile parts were used include the honeycomb panel, the honeycomb cavity intracavity fill of honeycomb panel have sound absorbing material, the upper and lower both sides face of honeycomb panel cover respectively and have the glass fiber felt, cover the honeycomb panel that has the glass fiber felt, form one deck confined base plate after foaming in through polyurethane spraying mould, the surface of base plate can have the skin according to the demand cladding that the customer is different.
Preferably, the sound-absorbing material is polyurethane or PET sound-absorbing fibers formed by pressing or pouring or injecting into the honeycomb cavities of the honeycomb plate. The glass fiber felt covers the two sides of the honeycomb plate for mould pressing, and the mould pressing sandwich structure layer forms a closed space, which means that the inner material is not sensitive to the whole water absorption of the product, and simultaneously provides a better smell and VOC environment. The completely closed cavity and the high-efficiency sound-absorbing material can exert the best acoustic performance to form an elastic mass point mode. In addition, the sound-absorbing material and the honeycomb material inside the cavity sealed by the polyurethane can prevent moisture, mildew and odor pollution, and ensure that VOC and odor maintain ideal stable effect.
Preferably, the appearance surface is a tufted carpet made of a nylon material, or a napped fabric made of PET/PP, or a skin material made of TPO/TPU/PVC/PU.
Preferably, the glass fiber felt clamps the honeycomb plate, then the polyurethane coating is coated on the two sides, and the coated honeycomb plate is placed into a die for force curing molding and edge pressing punching. The polyurethane coating seals the honeycomb structure and the sound-absorbing material in the honeycomb structure has the advantages of moisture resistance, mildew resistance, good adhesion, long-term stability and the like.
Preferably, a part of the honeycomb cavity of the honeycomb plate is filled with the sound-absorbing material, and the other part of the honeycomb cavity is not filled with the sound-absorbing material to form a gap.
Preferably, the honeycomb panel is made of paper or aluminum or synthetic fiber.
The application of the polyurethane acoustic celotex board that automobile parts used, in inlaying sound absorbing material into honeycomb aluminum plate's honeycomb space, just in time make full use of space by a wide margin improvement acoustic effect. The embedded embedding of the sound-absorbing material solves the problem of poor acoustics of the cover plate under the condition of not changing the structural strength and the bearing performance of a product, in particular to the problem of low-frequency noise of a motor of an electric vehicle. Can be improved in new products. According to the acoustics demand, when the honeycomb material is aluminium or synthetic fiber, can sting out a lot of apertures at the product back, the sound absorbing effect of more perfect promotion acoustic celotex board. The low-frequency noise isolation effect of the sound insulation board is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a polyurethane acoustic panel for a trunk of an automobile according to the present application.
Fig. 2 is a schematic structural view of a polyurethane soundproof panel for a trunk of an automobile according to another embodiment of the present application.
Wherein: 1. a honeycomb panel; 11. a sound absorbing material; 12. a void; 2. a glass fiber felt; 3. a polyurethane coating; 4. and (4) an outer layer.
Detailed Description
The present application is further described below in conjunction with the following figures and specific examples to enable those skilled in the art to better understand the present application and to practice it, but the examples are not intended to limit the present application.
As shown in fig. 1, the application provides a polyurethane acoustic celotex board that automobile parts used, the polyurethane acoustic celotex board that automobile parts used include honeycomb panel 1, honeycomb cavity intussuseption of honeycomb panel 1 fill sound absorbing material 11, honeycomb panel 1's upper and lower both sides face cover respectively and have glass fiber felt 2, honeycomb panel 1 that covers glass fiber felt 2 forms a confined base plate through polyurethane coating 3, the surface cladding of base plate have outer 4. The sound-absorbing material 11 is formed by pressing or pouring or injecting polyurethane or sound-absorbing fibers into the honeycomb cavities of the honeycomb panel 1. The glass fiber mats 2 are covered on two sides of the honeycomb plate 1 and are molded after the polyurethane 1 is sprayed, and the molded sandwich structure layer forms a closed space, which means that the inner material is not sensitive to the overall water absorption of the product, and simultaneously, a better smell and a better discharge environment are provided. The completely closed cavities also optimize the acoustic performance of the high efficiency sound absorbing material 11 and the honeycomb structure, forming an elastic mass point mode. The space enclosed by the polyurethane can prevent moisture, mildew and pollution, and the materials in the cavity are ensured to be stably in the range of required odor and VOC. The appearance surface of the outer layer 4 is a tufted carpet made of a nylon material, or a napped fabric made of PET/PP, or a skin material made of TPO/TPU/PVC/PU. The outer layer 4 can also be added with heavy coatings such as EVA/EPDM/PU and the like, so that the acoustic sound insulation effect of the sound insulation board is more effectively doubled, and the honeycomb board 1 is made of paper or aluminum or synthetic fiber.
As shown in fig. 2, in another embodiment of the present application, a part of the honeycomb cavities of the honeycomb panel 1 is filled with a sound absorbing material 11, and another part is not filled with the sound absorbing material 11 to form voids 12. Preferably, the thickness of the voids 12 is 3 mm. The reserved gap 12 can enable the sound absorption effect of the decorative plate to be better.
The application of the polyurethane acoustic celotex board that automobile parts used, in inlaying sound absorbing material 11 into the honeycomb space of honeycomb panel, just in time make full use of space by a wide margin improvement acoustic effect. The embedded embedding of the sound absorption material 11 solves the problem of poor cover plate acoustics under the condition of not changing the structural strength and the bearing performance of a product, in particular to the problem of low-frequency noise of a motor of an electric vehicle. Can be improved in new products.
The application discloses automobile parts polyurethane acoustic celotex board is applicable to automobile trunk apron, baffle, back seat backplate, hat rack, and any automobile parts that have hardness to bear the weight of and require with the acoustics sound insulation such as after-placement board. Not only for automotive interiors, but also for exterior applications when acoustic requirements are present. Other vehicles besides passenger and commercial cars, buses, freight and construction vehicles, and trains and airplanes may be used.
The above-described embodiments are merely preferred embodiments for fully illustrating the present application, and the scope of the present application is not limited thereto. The equivalent substitution or change made by the person skilled in the art on the basis of the present application is within the protection scope of the present application. The protection scope of this application is subject to the claims.
Claims (6)
1. The utility model provides a polyurethane acoustic celotex board that automobile parts used, its characterized in that, polyurethane acoustic celotex board that automobile parts used include the honeycomb panel, the honeycomb cavity intussuseption of honeycomb panel fill and have sound absorbing material, the upper and lower both sides face of honeycomb panel respectively cover and have the fine felt of glass, the honeycomb panel that covers and have the fine felt of glass forms a confined base plate, the surface cladding of base plate have the skin.
2. The polyurethane acoustical panel for automobile parts according to claim 1, wherein the acoustical absorbent is formed by polyurethane or PET/PP fibers being introduced into the honeycomb cavities of the honeycomb panel.
3. The polyurethane acoustical panel for automotive parts of claim 1, wherein said outer layer is a tufted carpet made of a nylon material.
4. The polyurethane acoustical panel for automotive parts of claim 1, wherein a side of said glass fiber mat remote from said honeycomb panel is coated with a polyurethane coating, and said outer layer is bonded to said glass fiber mat by said polyurethane coating.
5. The polyurethane acoustical panel for automobile parts according to claim 1, wherein a part of the honeycomb cavities of the honeycomb panel is filled with a sound absorbing material, and another part is not filled with a sound absorbing material to form voids.
6. The polyurethane acoustical panel for automobile parts according to claim 1, wherein the honeycomb panel is made of paper or aluminum or synthetic fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920524359.7U CN210453981U (en) | 2019-04-17 | 2019-04-17 | Polyurethane sound-proof board for automobile parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920524359.7U CN210453981U (en) | 2019-04-17 | 2019-04-17 | Polyurethane sound-proof board for automobile parts |
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| Publication Number | Publication Date |
|---|---|
| CN210453981U true CN210453981U (en) | 2020-05-05 |
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| CN201920524359.7U Active CN210453981U (en) | 2019-04-17 | 2019-04-17 | Polyurethane sound-proof board for automobile parts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968752A (en) * | 2019-04-17 | 2019-07-05 | 格林莱特实业（苏州）有限公司 | A kind of polyurethane soundproof plate of auto parts and components |
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2019
- 2019-04-17 CN CN201920524359.7U patent/CN210453981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968752A (en) * | 2019-04-17 | 2019-07-05 | 格林莱特实业（苏州）有限公司 | A kind of polyurethane soundproof plate of auto parts and components |
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