WO2024060431A1 - 一种吸隔声材料及汽车地毯 - Google Patents

一种吸隔声材料及汽车地毯 Download PDF

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WO2024060431A1
WO2024060431A1 PCT/CN2022/139542 CN2022139542W WO2024060431A1 WO 2024060431 A1 WO2024060431 A1 WO 2024060431A1 CN 2022139542 W CN2022139542 W CN 2022139542W WO 2024060431 A1 WO2024060431 A1 WO 2024060431A1
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sound
insulating material
layer
absorbing
carpet
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PCT/CN2022/139542
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English (en)
French (fr)
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陈奇
田秀杰
江育莹
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无锡吉兴汽车声学部件科技有限公司
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Publication of WO2024060431A1 publication Critical patent/WO2024060431A1/zh

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
    • B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
    • B60N3/048—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets characterised by their structure

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  • the present application relates to the field of automobile interior parts, and in particular to a sound-absorbing and insulating material and automobile carpet.
  • the purpose of this application is to provide a sound-absorbing and insulating material and a car carpet to solve the above-mentioned problems in the background art.
  • a sound-absorbing and insulating material includes a sound-absorbing and insulating material body.
  • the sound-absorbing and insulating material body is used to reduce mid-frequency noise. It includes a surface layer, a rubber film layer, and a base layer arranged in sequence from top to bottom.
  • the surface layer is a surface layer.
  • the sound absorption coefficient of the sound absorbing and insulating material body is 0.65 to 0.8.
  • the weight of the sound-absorbing and insulating material body is 1000g/m 2 to 1100g/m 2 .
  • the thickness of the sound absorbing and insulating material body is 4 mm to 6 mm.
  • the thickness of the surface layer is 2 mm to 3 mm.
  • the thickness of the adhesive film layer is 85 ⁇ m to 210 ⁇ m.
  • the thickness of the base layer is 2 mm to 3 mm.
  • a car carpet includes a carpet surface and a felt.
  • the carpet surface is arranged above the felt.
  • the carpet surface is made of a sound-absorbing and insulating material as described above.
  • the thickness of the carpet surface is 5mm and the thickness of the felt layer is 20mm.
  • the weight of the felt layer is 1000 g/m 2 .
  • the beneficial effect of the present application is that, compared with the prior art, the sound-absorbing and sound-insulating material of the present application can effectively reduce mid-frequency noise, and has an excellent sound-absorbing and sound-insulating effect in the frequency band of 400 Hz to 1600 Hz.
  • Figure 1 is a schematic structural diagram of a sound-absorbing and insulating material of the present application.
  • Figure 2 is a schematic structural diagram of Comparative Example 1
  • Figure 3 is a schematic structural diagram of Comparative Example 2.
  • Figure 4 is a comparison chart of the sound absorption effects of various carpets
  • Figure 5 is a comparison chart of the insertion loss of each carpet
  • Figure 6 is a comprehensive evaluation comparison chart of the acoustic performance of each carpet
  • Figure 7 is a comparison chart of the sound pressure level inside the car under simulated smooth road conditions
  • FIG8 is a diagram showing the difference between the sound pressure levels of the PRO-1 model, the PRO-2 model, and the basic model in FIG7 ;
  • Figure 9 is a comparison chart of noise levels in the vehicle in the full frequency range under simulated smooth road conditions.
  • Figure 10 is a comparison chart of the sound pressure level in the car under simulated rough road conditions
  • Figure 11 is a comparison chart of the sound pressure level in the car under simulated rough road conditions
  • Figure 12 is a diagram showing the difference in sound pressure level of PRO-1 model, PRO-2 model sound pressure level and basic model sound pressure level in Figure 11;
  • Figure 13 is a comparison chart of the acoustic curves on the left side of the front seat in the car at a speed of 120km/h and on smooth road conditions;
  • Figure 14 is a comparison chart of the acoustic curves on the left side of the rear seat in the car at a speed of 120km/h and on smooth road conditions;
  • Figure 15 is a comparison chart of the acoustic curves on the right side of the rear seat in the car at a speed of 120km/h and on smooth road conditions;
  • Figure 16 is a comparison chart of the acoustic curves on the left side of the front seat in the car at a speed of 60km/h and under rough road conditions;
  • Figure 17 is a comparison chart of the acoustic curves on the left side of the rear seat in the car under rough road conditions at a speed of 60km/h;
  • Figure 18 is a comparison chart of the acoustic curves on the right side of the rear seat in the car under rough road conditions at a speed of 60km/h.
  • a sound-absorbing and insulating material includes a sound-absorbing and insulating material body.
  • the sound-absorbing and insulating material body is used to reduce mid-frequency noise and includes surface layers arranged sequentially from top to bottom.
  • Adhesive film layer 12 and base layer 13 The surface layer 11 is a PET layer with an area density of 200g/m 2 to 500g/m 2
  • the adhesive film layer 12 has an area density of 80g/m 2 to 200g/m 2
  • the adhesive film layer 12 is a PP adhesive film or a PE adhesive film
  • the base layer 13 is a PET layer with an area density of 200g/m 2 to 800g/m 2 .
  • the sound absorption coefficient of the sound absorbing and insulating material body is 0.65 to 0.8.
  • the weight of the sound-absorbing and insulating material body is 1000g/m 2 to 1100g/m 2 .
  • the thickness of the sound-absorbing and insulating material body is 4 mm to 6 mm.
  • the thickness of the surface layer 11 is 2 mm.
  • the thickness of the adhesive film layer 12 is 1 mm.
  • the thickness of the base layer 13 is 2 mm.
  • This embodiment also provides a car carpet, which includes a carpet surface and a felt layer.
  • the carpet surface is disposed above the felt layer.
  • the carpet surface is made of a sound-absorbing and insulating material as described above.
  • the thickness of the felt layer is 5mm.
  • the weight of the felt layer is 300g/m 2 .
  • the sound-absorbing and insulating material includes a first PET layer 21, a PE powder layer 22, a second PET layer 23, and a PE coating layer 24 arranged in sequence from top to bottom.
  • the grammage of the first PET layer 21 is 350g/m 2
  • the thickness of the first PET layer 21 is 2-3mm
  • the grammage of the PE powder layer 22 is 100g/m 2
  • the grammage of the second PET layer 23 is 600g/m 2
  • the weight of the PE coating layer 24 is 300g/m 2 .
  • the sound-absorbing and insulating material includes a third PET layer 31, a PE powder layer 32, and a fourth PET layer 33 arranged in sequence from top to bottom.
  • the grammage of the third PET layer 31 is 350g/m 2
  • the thickness of the third PET layer 31 is 2-3mm
  • the grammage of the PE powder layer 32 is 100g/m 2
  • the grammage of the fourth PET layer 33 is 600g/ m2 .
  • the sound-absorbing and insulating material in Comparative Example 1 is an ordinary sound-insulating type solution and is set to the BASE model.
  • the sound-absorbing and insulating material in Comparative Example 2 is an ordinary sound-absorbing type solution and is set to the PRO-2 model.
  • the sound-absorbing and insulating material in Example 1 is set to the PRO-2 type.
  • the sound insulation material is PRO-1 type.
  • a sound insulation box was used for the sound insulation test, and the testing standard method was: G-CS-068-01.
  • the sound insulation effect of the sound-absorbing and insulating material in Example 1 in the frequency band of 400Hz to 1600Hz was better than that in Comparative Example 1.
  • the sound insulation effect of the sound insulation material is also better than that of the sound absorption and insulation material in Comparative Example 2.
  • a comprehensive evaluation method of acoustic performance is adopted.
  • the specific evaluation method please refer to Chinese Patent Publication No. CN111007152B.
  • the name of the invention is a comprehensive evaluation method and system of acoustic performance.
  • the sound-absorbing and insulating material of Embodiment 1 performs in the frequency band of 400Hz to 1600Hz.
  • the acoustic performance is better than the acoustic performance of the sound-absorbing and insulating material in Comparative Example 1 and the acoustic performance of the sound-absorbing and insulating material in Comparative Example 2.
  • the sedan SEA template model + measured exterior noise SPL (sound pressure level, sound pressure level) is used to predict the interior SPL of different carpet solutions.
  • the sound-absorbing and insulating materials of this application are optimal under different working conditions. Above 2500 Hz, the sound-absorbing and insulating material of this application is poor, but the energy in these frequency bands is small and the overall impact is small. Therefore, the comprehensive sound pressure level of the sound-absorbing and insulating material of this application is optimal.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)
  • Passenger Equipment (AREA)

Abstract

一种吸隔声材料，包括吸隔声材料本体，该吸隔声材料本体用于降低中频噪声，其包括由上至下依次设置的表层（11）、胶膜层（12）、基底层（13），表层（11）是面密度为200g/m 2～500g/m 2的PET层，胶膜层（12）的面密度为80g/m 2～200g/m 2，胶膜层（12）为PP胶膜或PE胶膜，基底层（13）是面密度为200g/m 2～800g/m 2的PET层。还提供了一种汽车地毯，包括毯面及毛毡，毯面设置于毛毡的上方，毯面由该吸隔声材料制备而成。该吸隔声材料能有效降低中频噪声，在400Hz～1600Hz频段，其具有极佳的吸隔声效果。

Description

一种吸隔声材料及汽车地毯 技术领域
本申请涉及汽车内饰件领域，尤其涉及一种吸隔声材料及汽车地毯。
背景技术
汽车在运行过程中，往往会产生较大的噪音。为了提高驾乘舒适性，部分汽车内饰件需要采用吸隔声材料制成。例如，现有汽车的汽车地毯一般安装在车体地板钣金上，同时具备外观装饰及吸收、隔离车外噪音的功能；然而，现有汽车地毯往往对高频段的吸隔声效果较好，对于部分车型而言，如丰田的凯美瑞，其产生的噪音大部分为中频段的，由此，现有汽车地毯难以适用，急需解决。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请的目的在于针对上述问题，提供一种吸隔声材料及汽车地毯，以解决上述背景技术中提出的问题。
本申请的目的是通过以下技术方案来实现：
一种吸隔声材料，包括吸隔声材料本体，所述吸隔声材料本体用于降低中频噪声，其包括由上至下依次设置的表层、胶膜层、基底层，所述表层是面密度为200g/m 2～500g/m 2的PET层，所述胶膜层的面密度为80g/m 2～200g/m 2，所述胶膜层为PP胶膜或PE胶膜，所述基底层是面密度为200g/m 2～800g/m 2的 PET层。
作为本申请的一种优选方案，在400Hz～1600Hz频段，所述吸隔声材料本体的吸声系数为0.65～0.8。
作为本申请的一种优选方案，所述吸隔声材料本体的克重为1000g/m 2～1100g/m 2。
作为本申请的一种优选方案，所述吸隔声材料本体的厚度为4mm～6mm。
作为本申请的一种优选方案，所述表层的厚度为2mm～3mm。
作为本申请的一种优选方案，所述胶膜层的厚度为85μm～210μm。
作为本申请的一种优选方案，所述基底层的厚度为2mm～3mm。
一种汽车地毯，包括毯面及毛毡，所述毯面设置于所述毛毡的上方，所述毯面由如上所述的一种吸隔声材料制备而成。
作为本申请的一种优选方案，所述毯面的厚度为5mm，毛毡层厚度为20mm。
作为本申请的一种优选方案，所述毛毡层的克重为1000g/m 2。
本申请的有益效果为，与现有技术相比，本申请吸隔声材料能有效降低中频噪声，在400Hz～1600Hz频段，其具有极佳的吸隔声效果。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
附图用来提供对本文技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本文的技术方案，并不构成对本文技术方案的限制。
图1为本申请一种吸隔声材料的结构示意图。
图2为对比例1的结构示意图；
图3为对比例2的结构示意图；
图4为各地毯的吸声效果对比图；
图5为各地毯的插入损失对比图；
图6为各地毯的声学性能综合评估对比图；
图7为仿真光滑路面条件下的车内声压级对比图；
图8为图7中PRO-1款声压级、PRO-2款声压级与基础款声压级的差异情况图；
图9为仿真光滑路面条件下全频段车内噪声水平对比图；
图10为仿真粗糙路面条件下的车内声压级对比图；
图11为仿真粗糙路面条件下的车内声压级对比图；
图12为图11中PRO-1款声压级、PRO-2款声压级与基础款声压级的差异情况图；
图13为车内前排左侧处在120km/h速度下于光滑路面条件下的声学曲线对比图；
图14为车内后排左侧处在120km/h速度下于光滑路面条件下的声学曲线对比图；
图15为车内后排右侧处在120km/h速度下于光滑路面条件下的声学曲线对比图；
图16为车内前排左侧处在60km/h速度下于粗糙路面条件下的声学曲线对比图；
图17为车内后排左侧处在60km/h速度下于粗糙路面条件下的声学曲线对比图；
图18为车内后排右侧处在60km/h速度下于粗糙路面条件下的声学曲线对比图。
图中：
11、表层；12、胶膜层；13、基底层；21、第一PET层；22、PE粉层；23、第二PET层；24、PE淋膜层；31、第三PET层；32、PE粉层；33、第四PET层。
具体实施方式
下面结合附图并通过具体实施方式来进一步说明本申请的技术方案。可以理解的是，此处所描述的实施例仅仅用于解释本申请，而非对本申请的限定。
实施例1
请参照图1所示，于本实施例中，一种吸隔声材料，包括吸隔声材料本体，所述吸隔声材料本体用于降低中频噪声，其包括由上至下依次设置的表层11、胶膜层12、基底层13，所述表层11是面密度为200g/m 2～500g/m 2的PET层，所述胶膜层12的面密度为80g/m 2～200g/m 2，且所述胶膜层12为PP胶膜或PE胶膜，所述基底层13是面密度为200g/m 2～800g/m 2的PET层。
具体的，在400Hz～1600Hz频段，所述吸隔声材料本体的吸声系数为0.65～0.8。
具体的，所述吸隔声材料本体的克重为1000g/m 2～1100g/m 2。
具体的，所述吸隔声材料本体的厚度为4mm～6mm。
具体的，所述表层11的厚度为2mm。
具体的，所述胶膜层12的厚度为1mm。
具体的，所述基底层13的厚度为2mm。
本实施例还提供一种汽车地毯，包括毯面及毛毡层，所述毯面设置于所述毛毡层的上方，所述毯面由如上所述的一种吸隔声材料制备而成。
具体的，所述毛毡层的厚度为5mm。
具体的，所述毛毡层的克重为300g/m 2。
对比例1
请参照图2所示，为本申请对比例1的结构示意图。该吸隔声材料包括由上至下依次设置的第一PET层21、PE粉层22、第二PET层23、PE淋膜层24构成。
其中，第一PET层21的克重为350g/m 2，第一PET层21的厚度为2-3mm，PE粉层22的克重为100g/m 2，第二PET层23的克重为600g/m 2，PE淋膜层24的克重为300g/m 2。
对比例2
请参照图3所示，为本申请对比例2的结构示意图；该吸隔声材料包括由上至下依次设置的第三PET层31、PE粉层32、第四PET层33构成。
其中，第三PET层31的克重为350g/m 2，第三PET层31的厚度为2-3mm，PE粉层32的克重为100g/m 2,第四PET层33的克重为600g/m 2。
对比例1的吸隔声材料为普通隔音型方案，设定为BASE款，对比例2中的吸隔声材料为普通吸音型方案，设定为PRO-2款，设定实施例1的吸隔声材料为PRO-1款。通过对比各种地毯的吸声和隔声特性，并计算出SAIL(声学性能综合评估值)。
采用R-Cabin设备测试，检测标准方法：G-CS-027-01，如图4所示，实施例1的吸隔声材料在400Hz～1600Hz频段的吸声效果优于对比例1中吸隔声材 料的吸声效果，但次于对比例2中吸隔声材料的吸声效果。
采用隔声箱隔声测试，检测标准方法：G-CS-068-01，如图5所示，实施例1的吸隔声材料在400Hz～1600Hz频段的隔声效果优于对比例1中吸隔声材料的隔声效果，也优于对比例2中吸隔声材料的隔声效果。
采用声学性能综合评估方法，具体评估方法参见中国专利公开号CN111007152B，发明名称为一种声学性能综合评估方法及系统，如图6所示，实施例1的吸隔声材料在400Hz～1600Hz频段的声学性能优于对比例1中吸隔声材料的声学性能，也优于对比例2中吸隔声材料的声学性能。
结合上述分析，显然，在400Hz～1600Hz内，本申请的吸隔声材料是最优的。
如图7至图12所示，运用三厢车SEA模板模型+实测车外噪SPL(sound pressure level，声压级)，预测不同地毯方案时的车内SPL。
在400Hz～1600Hz，不同工况下，本申请的吸隔声材料均最优。在2500Hz以上，本申请的吸隔声材料较差，但是这些频段能量小，整体影响小，因此，本申请的吸隔声材料的综合声压级最优。
最后，进行实际测试，对比不同工况、不同位置，不同地毯方案的车内SPL测试结果。如图13至图18所示，在400Hz～1600Hz内，本申请的吸隔声材料的车内SPL较小，性能较优，与零件测试及仿真趋势基本一致。
以上实施例只是阐述了本申请的基本原理和特性，本申请不受上述实施例限制，在不脱离本申请精神和范围的前提下，本申请还有各种变化和改变，这些变化和改变都落入要求保护的本申请范围内。本申请要求保护范围由所附的权利要求书界定。

Claims (10)

  1. 一种吸隔声材料，包括吸隔声材料本体，其中：所述吸隔声材料本体用于降低中频噪声，其包括由上至下依次设置的表层、胶膜层、基底层，所述表层是面密度为200g/m 2～500g/m 2的PET层，所述胶膜层的面密度为80g/m 2～200g/m 2，所述胶膜层为PP胶膜或PE胶膜，所述基底层是面密度为200g/m 2～800g/m 2的PET层。
  2. 根据权利要求1所述的一种吸隔声材料，其中：在400Hz～1600Hz频段，所述吸隔声材料本体的吸声系数为0.65～0.8。
  3. 根据权利要求1所述的一种吸隔声材料，其中：所述吸隔声材料本体的克重为1000g/m 2～1100g/m 2。
  4. 根据权利要求1所述的一种吸隔声材料，其中：所述吸隔声材料本体的厚度为4mm～6mm。
  5. 根据权利要求1所述的一种吸隔声材料，其中：所述表层的厚度为2mm～3mm。
  6. 根据权利要求1所述的一种吸隔声材料，其中：所述胶膜层的厚度为85μm～210μm。
  7. 根据权利要求1所述的一种吸隔声材料，其中：所述基底层的厚度为2mm～3mm。
  8. 一种汽车地毯，包括毯面及毛毡，所述毯面设置于所述毛毡的上方，其中：所述毯面由权利要求1至7任一项所述的一种吸隔声材料制备而成。
  9. 根据权利要求8所述的一种汽车地毯，其中：所述毯面的厚度为5mm，毛毡层厚度为20mm。
  10. 根据权利要求9所述的一种汽车地毯，其中：所述毛毡层的克重为1000g/m 2。
PCT/CN2022/139542 2022-09-23 2022-12-16 一种吸隔声材料及汽车地毯 WO2024060431A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140032776A (ko) * 2012-09-07 2014-03-17 현대자동차주식회사 자동차용 카페트 및 그 제조 방법
CN203995843U (zh) * 2014-08-15 2014-12-10 海南华福汽车零部件制造有限公司 隔音降噪汽车地毯
CN204870663U (zh) * 2015-06-05 2015-12-16 昆山九子莲汽车隔音材料有限公司 一种汽车吸音地毯
CN112498206A (zh) * 2020-12-11 2021-03-16 无锡吉兴汽车声学部件科技有限公司 一种汽车地毯结构及排布方式

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140032776A (ko) * 2012-09-07 2014-03-17 현대자동차주식회사 자동차용 카페트 및 그 제조 방법
CN203995843U (zh) * 2014-08-15 2014-12-10 海南华福汽车零部件制造有限公司 隔音降噪汽车地毯
CN204870663U (zh) * 2015-06-05 2015-12-16 昆山九子莲汽车隔音材料有限公司 一种汽车吸音地毯
CN112498206A (zh) * 2020-12-11 2021-03-16 无锡吉兴汽车声学部件科技有限公司 一种汽车地毯结构及排布方式

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