CN220742343U - Sound-absorbing noise-reducing light-weight automobile front hatch cover composite board - Google Patents
Sound-absorbing noise-reducing light-weight automobile front hatch cover composite board Download PDFInfo
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- CN220742343U CN220742343U CN202321628494.9U CN202321628494U CN220742343U CN 220742343 U CN220742343 U CN 220742343U CN 202321628494 U CN202321628494 U CN 202321628494U CN 220742343 U CN220742343 U CN 220742343U
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- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 33
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 19
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 19
- 239000011491 glass wool Substances 0.000 claims abstract description 18
- 239000012784 inorganic fiber Substances 0.000 claims description 7
- 229920001903 high density polyethylene Polymers 0.000 claims description 5
- 239000004700 high-density polyethylene Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000002313 adhesive film Substances 0.000 claims description 2
- 239000004964 aerogel Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 238000009957 hemming Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract description 21
- 229920003023 plastic Polymers 0.000 abstract description 8
- 239000004033 plastic Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 95
- 239000012790 adhesive layer Substances 0.000 description 18
- 238000012360 testing method Methods 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 229920006262 high density polyethylene film Polymers 0.000 description 5
- 238000011056 performance test Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
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Landscapes
- Laminated Bodies (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The utility model relates to a sound-absorbing and noise-reducing lightweight automobile front hatch cover composite board, which mainly solves the problems of high weight, poor sound-absorbing and noise-reducing effects and unattractive appearance of a plastic front hatch cover in the prior art. The utility model adopts the technical scheme that the sound-absorbing noise-reducing light-weight automobile front hatch cover composite board sequentially comprises a fabric layer (1), a first bonding layer (2), a polyurethane foam layer (3), a second bonding layer (4), a glass wool layer (5), a third bonding layer (6) and a non-woven fabric layer (7) from top to bottom, so that the problem is well solved, and the sound-absorbing noise-reducing light-weight automobile front hatch cover composite board can be used in the industrial production of automobile front hatch covers.
Description
Technical Field
The utility model relates to the field of new energy automobiles, in particular to a sound-absorbing noise-reducing lightweight automobile front hatch cover composite board.
Background
With the development of the automobile industry, automobile weight reduction has become an important sign for measuring the design and manufacturing level of automobiles, and plastics are widely applied to automobile interior and exterior trim parts as main application materials for automobile weight reduction. The front cabin of the automobile is used as a main component of the interior trim part, the quality, the weight and the sound absorption and noise reduction performance of the front cabin of each big host factory and design institute at home and abroad are higher and higher, particularly in the age that new energy automobiles rapidly develop, the light weight requirement can relate to the endurance mileage of the new energy automobile, and the sound absorption and noise reduction performance is more relevant to the driving and riding experience of drivers and passengers; therefore, it is important to develop a lightweight, sound-absorbing and noise-reducing front hatch cover for market development.
HDPE is short for high-density polyethylene (High Density Polyethylene), also called low-pressure polyethylene, is thermoplastic resin with high crystallinity, non-polarity and semi-transparent to a certain extent, has good heat resistance and cold resistance, good chemical stability, higher rigidity and toughness and good mechanical strength; the dielectric property and the environmental stress cracking resistance are also good; hardness, tensile strength and creep are superior to low density polyethylene.
Chinese patent CN205273637U discloses a composite material passenger car front hatch cover, which is composed of an outer plate and an inner plate, wherein the outer plate is formed by compression molding of continuous glass fiber fabric prepreg, the inner plate is formed by injection molding of LFT process, and the inner plate and the outer plate are glued and assembled; wherein, the material matrix adopted by the outer plate is epoxy resin or modified epoxy resin or bismaleimide resin, and the material matrix adopted by the inner plate is nylon; the weight of the front hatch cover product is greatly reduced, and the front hatch cover can be used for replacing the existing metal front hatch cover, so that the energy consumption of an automobile is reduced; but the effects of sound absorption and noise reduction are poor, and the attractiveness is not enough.
Chinese patent CN 209505138U discloses a front hatch cover sound-insulation and heat-insulation pad, comprising a pad body, wherein the shape of the pad body is matched with the front hatch cover and is clamped on the front hatch cover, and the pad body comprises a first heat-resistant layer, a first dampproof layer, a first sound-insulation and heat-insulation layer, a shaping layer, a second sound-insulation and heat-insulation layer, a second dampproof layer and a second heat-resistant layer which are sequentially laminated and bonded; the first and second heat-resistant layers are PET layers, the first and second dampproof layers are PE film layers, the first and second sound-proof and heat-insulating layers are PUR layers, and the shaping layer is a phenolic resin glass fiber cloth layer; the sound-absorbing and heat-insulating function is achieved, but the sound-absorbing and noise-reducing performance is further improved, and the overall front hatch cover is heavy in quality and poor in attractiveness.
Disclosure of Invention
The utility model aims to solve the technical problems that an automobile plastic front hatch cover in the prior art is heavy, poor in sound absorption and noise reduction effects and unattractive, and provides a sound absorption, noise reduction and light-weight automobile front hatch cover composite board.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a inhale sound and fall noise, lightweight car front deck cover composite board, top-down includes fabric layer 1, first tie coat 2, polyurethane foam layer 3, second tie coat 4, glass wool layer 5, third tie coat 6 and non-woven fabrics layer 7 in proper order.
In the above technical scheme, preferably, the density of the polyurethane foam layer 3 is 10-18 kg/m 3 The thickness is 15-25 mm.
In the above technical scheme, preferably, the nonwoven fabric layer 7 is selected from spunbond nonwoven fabrics, and the gram weight of the nonwoven fabrics is 40-60 g/m 2 。
In the above technical solution, preferably, the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 6 are selected from HDPE adhesive films with a gram weight of 40～80g/m 2 。
In the above technical scheme, preferably, the fabric layer 1 is one of a knitted fabric or a hemmed non-woven fabric, and has a gram weight of 180-250 g/m 2 。
In the above technical scheme, preferably, the glass wool layer 5 is selected from the group consisting of glass wool layers with a gram weight of 800-1500 g/m 2 Is a man-made inorganic fiber.
In the above embodiments, the polyurethane foam layer 3 is preferably selected from polyurethane composite layers containing aerogel particles.
According to the sound-absorbing and noise-reducing light-weight automobile front hatch cover composite board provided by the utility model, through the combined use of the light polyurethane foam and the glass wool, the double structure advantages of a large number of micro-pore holes communicated with the inside and the outside of the glass wool are combined, so that noise enters the porous structure to be reflected for multiple times, vibration and friction of air molecules in a gap are caused, sound energy is converted into heat energy, energy is greatly reduced, and the sound-absorbing and noise-reducing effects are achieved; meanwhile, the overall gram weight of the front hatch cover composite board is 2000g/m 2 Below, far below the front hatch of the plastic part (gram weight generally ranging from 2500 to 3000g/m 2 The weight is lighter, and the advantages of light weight are achieved; in addition, the setting of bonding fabric layer, non-woven fabrics layer and tie coat, whole composite board intensity is big, the elongation is good, easy shaping, and the surface fabric colour can be customized, and the product appearance is more pleasing to the eye. Therefore, the sound-absorbing and noise-reducing light-weight automobile front hatch cover composite board provided by the utility model has the advantages of light weight, sound absorption and noise reduction and attractive appearance, and good technical effects are achieved.
Drawings
Fig. 1 is a schematic structural view of a sound-absorbing and noise-reducing lightweight automotive front hatch cover composite board.
In fig. 1, 1 is a fabric layer, 2 is a first bonding layer, 3 is a polyurethane foam layer, 4 is a second bonding layer, 5 is a glass wool layer, 6 is a third bonding layer, and 7 is a non-woven fabric layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
[ example 1 ]
The sound-absorbing, noise-reducing and light-weight automobile front hatch cover composite board sequentially comprises a fabric layer 1, a first bonding layer 2, a polyurethane foam layer 3, a second bonding layer 4, a glass wool layer 5, a third bonding layer 6 and a non-woven fabric layer 7 from top to bottom; wherein the fabric layer 1 is 180g/m in gram weight 2 Is a hemmed nonwoven fabric; the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 6 are each 50g/m in gram weight 2 Is a HDPE film; the density of the polyurethane foam layer 3 was 12kg/m 3 The thickness is 15mm; the glass wool layer 5 has a gram weight of 850g/m 2 Is a synthetic inorganic fiber layer; the non-woven fabric layer 7 has a gram weight of 50g/m 2 Is a spun-bonded nonwoven fabric of (a); the performance detection data of the prepared automobile front hatch cover composite board are shown in table 1; the front hatch was assembled to an automobile and tested for NVH performance, and the results of the cab noise test are shown in table 2.
[ example 2 ]
The sound-absorbing, noise-reducing and light-weight automobile front hatch cover composite board sequentially comprises a fabric layer 1, a first bonding layer 2, a polyurethane foam layer 3, a second bonding layer 4, a glass wool layer 5, a third bonding layer 6 and a non-woven fabric layer 7 from top to bottom; wherein the fabric layer 1 has a gram weight of 200g/m 2 Is a hemmed nonwoven fabric; the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 6 are each 50g/m in gram weight 2 Is a HDPE film; the density of the polyurethane foam layer 3 was 15kg/m 3 The thickness is 20mm; glass wool layer 5 has a gram weight of 1000g/m 2 Is a synthetic inorganic fiber layer; the non-woven fabric layer 7 has a gram weight of 50g/m 2 Is a spun-bonded nonwoven fabric of (a); the performance detection data of the prepared automobile front hatch cover composite board are shown in table 1; the front hatch was assembled to an automobile and tested for NVH performance, and the results of the cab noise test are shown in table 2.
[ example 3 ]
A sound-absorbing, noise-reducing and light-weight automobile front hatch cover composite board,the fabric comprises a fabric layer 1, a first bonding layer 2, a polyurethane foam layer 3, a second bonding layer 4, a glass wool layer 5, a third bonding layer 6 and a non-woven fabric layer 7 from top to bottom in sequence; wherein the fabric layer 1 has a gram weight of 250g/m 2 Is a hemmed nonwoven fabric; the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 6 were each 60g/m in terms of gram weight 2 Is a HDPE film; the density of the polyurethane foam layer 3 was 18kg/m 3 The thickness is 15mm; the glass cotton layer 5 has a gram weight of 1200g/m 2 Is a synthetic inorganic fiber layer; the non-woven fabric layer 7 has a gram weight of 50g/m 2 Is a spun-bonded nonwoven fabric of (a); the performance detection data of the prepared automobile front hatch cover composite board are shown in table 1; the front hatch was assembled to an automobile and tested for NVH performance, and the results of the cab noise test are shown in table 2.
[ example 4 ]
The sound-absorbing, noise-reducing and light-weight automobile front hatch cover composite board sequentially comprises a fabric layer 1, a first bonding layer 2, a polyurethane foam layer 3, a second bonding layer 4, a glass wool layer 5, a third bonding layer 6 and a non-woven fabric layer 7 from top to bottom; wherein the fabric layer 1 has a gram weight of 200g/m 2 Is a hemmed nonwoven fabric; the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 6 were each 60g/m in terms of gram weight 2 Is a HDPE film; the density of the polyurethane foam layer 3 was 18kg/m 3 The thickness is 20mm; glass wool layer 5 has a gram weight of 1100g/m 2 Is a synthetic inorganic fiber layer; the non-woven fabric layer 7 has a gram weight of 50g/m 2 Is a spun-bonded nonwoven fabric of (a); the performance detection data of the prepared automobile front hatch cover composite board are shown in table 1; the front hatch was assembled to an automobile and tested for NVH performance, and the results of the cab noise test are shown in table 2.
[ example 5 ]
The sound-absorbing, noise-reducing and light-weight automobile front hatch cover composite board sequentially comprises a fabric layer 1, a first bonding layer 2, a polyurethane foam layer 3, a second bonding layer 4, a glass wool layer 5, a third bonding layer 6 and a non-woven fabric layer 7 from top to bottom; wherein the fabric layer 1 has a gram weight of 230g/m 2 Is a hemmed nonwoven fabric; the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 6 are each 50g/m in gram weight 2 Is a HDPE film; polyurethane foam layer 3Density of 15kg/m 3 The thickness is 15mm; glass wool layer 5 has a gram weight of 1000g/m 2 Is a synthetic inorganic fiber layer; the non-woven fabric layer 7 has a gram weight of 40g/m 2 Is a spun-bonded nonwoven fabric of (a); the performance detection data of the prepared automobile front hatch cover composite board are shown in table 1; the front hatch was assembled to an automobile and tested for NVH performance, and the results of the cab noise test are shown in table 2.
[ comparative example 1 ]
A commercial automobile and a front hatch cover thereof are made of plastic parts, and gram weight data of the commercial automobile are shown in table 1; NVH performance was measured by the same method as in examples 1 to 5, and the obtained cab noise test result data are shown in Table 2.
Table 1 performance test data of automobile front hatchcover in examples 1 to 5 and comparative example 1
Note that: the plastic part front hatch of comparative example 1 is different from the performance test of the composite board front hatch of examples 1 to 5, and is not comparable, and "/" in table 1 indicates that the corresponding performance is not tested.
Table 2 cab noise test data in car NVH performance test in examples 1 to 5 and comparative example 1
Note that: the noise test in table 2 uses static test, i.e. under the static state of the automobile, the loudspeaker is used for simulating the sound source, the noise data of the ear position of the driver in the cab is detected, and the frequency and noise spectrum analysis is carried out.
As can be seen from the data in Table 1, the sound-absorbing, noise-reducing and light-weight automobile front hatch cover composite board provided by the utility model has the gram weight of not more than 2000g/m in examples 1-5 2 Can meet the index requirements of physical properties under the condition of (a), can be used in the automobile front hatch cover, and has gram weight far lower than the specific weightThe plastic part of example 1 is lighter in weight; meanwhile, as can be seen from the data in table 2, in the automobile NVH acoustic performance test, the noise of examples 1 to 5 is lower, especially the middle-high frequency band noise of 2000 to 8000Hz is far lower than that of the plastic part of comparative example 1, and the sound absorption and noise reduction effects are remarkable; in addition, the front hatch cover of the embodiments 1-5 can customize the color of the fabric according to the requirements of customers, is easy to form and has more attractive products.
Therefore, the composite board for the front hatch cover of the automobile has the advantages of light weight, sound absorption, noise reduction and attractive appearance, and can be used in the industrial production of the front hatch cover of the new energy automobile.
Claims (7)
1. The utility model provides a inhale sound and fall noise, lightweight car front deck cover composite board, its characterized in that, top-down includes precoat (1), first tie coat (2), polyurethane foam layer (3), second tie coat (4), glass wool layer (5), third tie coat (6) and non-woven fabrics layer (7) in proper order.
2. The sound-absorbing, noise-reducing and light-weight composite board for the front hatch of the automobile according to claim 1, characterized in that the density of the polyurethane foam layer (3) is 10-18 kg/m 3 The thickness is 15-25 mm.
3. The sound-absorbing, noise-reducing and light-weight composite board for the front hatch of the automobile according to claim 1, characterized in that the non-woven fabric layer (7) is selected from spun-bonded non-woven fabrics, and the gram weight of the non-woven fabrics is 40-60 g/m 2 。
4. The sound-absorbing, noise-reducing and light-weight composite board for the front hatch of the automobile according to claim 1, characterized in that the first bonding layer (2), the second bonding layer (4) and the third bonding layer (6) are selected from HDPE adhesive films with gram weights of 40-80 g/m 2 。
5. The sound-absorbing, noise-reducing and light-weight composite board for the front hatch of the automobile according to claim 1, characterized in that the surface material layer (1) is selected from one of knitted surface material or hemming non-woven fabric, and the gram weight is 180～250g/m 2 。
6. The sound-absorbing, noise-reducing and light-weight composite board for the front hatch of the automobile according to claim 1, characterized in that the glass wool layer (5) is selected from 800-1500 g/m in gram weight 2 Is a man-made inorganic fiber.
7. The sound-absorbing, noise-reducing, lightweight automotive front hatch composite board according to any of claims 1-6, characterized in that the polyurethane foam layer (3) is selected from the group of polyurethane composite layers containing aerogel particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321628494.9U CN220742343U (en) | 2023-06-26 | 2023-06-26 | Sound-absorbing noise-reducing light-weight automobile front hatch cover composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321628494.9U CN220742343U (en) | 2023-06-26 | 2023-06-26 | Sound-absorbing noise-reducing light-weight automobile front hatch cover composite board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220742343U true CN220742343U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321628494.9U Active CN220742343U (en) | 2023-06-26 | 2023-06-26 | Sound-absorbing noise-reducing light-weight automobile front hatch cover composite board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220742343U (en) |
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2023
- 2023-06-26 CN CN202321628494.9U patent/CN220742343U/en active Active
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