CN102080745A - 具有多层结构的低噪声塑料中间冷却器管 - Google Patents
具有多层结构的低噪声塑料中间冷却器管 Download PDFInfo
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Abstract
本发明提供了一种低噪声塑料中间冷却器管。在优选的实施方案中,本发明优选提供了一种具有多层结构的低噪声塑料中间冷却器管,该多层结构包括:包含热塑性醚酯弹性体(TEEE)的表层和包含玻璃泡的隔音芯层。
Description
技术领域
本发明总的来说涉及具有多层结构的低噪声塑料中间冷却器管,该多层结构包括:优选包含热塑性醚酯弹性体的表层和优选包含玻璃泡的隔音芯层。
背景技术
通常,中间冷却器管,作为连接涡轮增压器与中间冷却器的管,起到了将从涡轮增压器排除的空气传送到中间冷却器的通道的作用。来自发动机的未燃烧气体在通过涡轮增压器时变成高温高压气体,该高温高压气体经中间冷却器和空气进气歧管再供给到发动机的燃烧室中。
传统的汽车用中间冷却器管通常由如铝的金属构成,或是金属管。例如,已经描述了连接到橡胶软管上的铝管。但是,由于该金属中间冷却器管较重,因此,难以实现汽车工业中优选需要的减重。此外,需要多种工艺,如橡胶软管的注射成型、铝管的拉挤成型和弯曲、以及将橡胶软管连接到铝管上的卡装工艺(clamping process),由此适当地提高了制造该金属中间冷却器管的成本。
近来,已经报道了通过三维共挤出吹塑法使用热塑性醚酯弹性体制造塑料中间冷却器管的技术。但是,相对于铝管,该塑料中间冷却器管屏蔽噪声、振动和声振粗糙度(NVH)的效果降低。优选适当地提高用于构成该中间冷却器管的材料的密度以减少气动噪声,或必须提高中间冷却器管的厚度以减少噪声。此外,中间冷却器管的重量和制造成本适当地提高,并且由于高弯曲模量,难以将该中间冷却器管装配到汽车中。
因此,在本领域需要一种低噪声中间冷却器管。
背景部分中公开的上述信息仅用于提高对本发明背景的理解,因此,其可以包含不构成在该国家对本领域普通技术人员来说是已知的现有技术的信息。
发明内容
在一方面,本发明提供一种具有多层结构的塑料中间冷却器管,该多层结构包括表层和具有由玻璃泡产生的气孔(blowholes)的隔音芯层。本发明还提供一种具有优良隔音效果的隔音芯层的组合物。在优选的实施方案中,本发明提供一种具有多层结构的低噪声塑料中间冷却器管。
按照本发明的优选实施方案,提供了一种具有多层结构的低噪声塑料中间冷却器管,该多层结构包括具有热塑性醚酯弹性体(TEEE)的表层;和具有该TEEE、玻璃泡和热稳定剂的隔音芯层。
本发明的具有多层结构的低噪声塑料中间冷却器管具有极佳的汽车中间冷却器管所需要的性能。在本发明的特别优选的实施方案中,当与传统的塑料中间冷却器管相比时,该低噪声塑料中间冷却器管更有效地屏蔽了中间冷却管中产生的气动噪声与结构噪声。
要理解的是,本文中使用的术语“车辆”或“车辆的”或其他类似术语包括一般机动车(诸如包括运动型多功能车(SUV)、公共汽车、卡车、各种商用车辆的载客汽车),水运工具(包括多种小船和船只),以及飞行器等等,并且包括混合动力车、电动车、插电混合电动车、氢能源车和其他可替换的燃料车(例如从石油以外的资源获得的燃料)。
如此处所述,混合动力型车辆是具有两种或更多动力源的车辆,例如汽油能源和电能源。
本发明的上述特征和优点将从包括在其中并形成本说明书的一部分的附图中以及从以下与附图共同用于以实例的方式解释本发明的原理的详细的说明中变得明显或者被更为详细地阐述。
附图说明
现在通过参考附图详细描述本发明的示例性实施方案,本发明的上述及其它特征与优点将变得更加显而易见,其中:
图1显示了按照本发明的实施方案的具有三层结构的塑料中间冷却器管的横断面图;和
图2显示了用于在实验例2中进行的噪声测试的系统。
应当理解的是,附图并非必须按照比例,其呈现了说明本发明基本原理的各个优选特征的稍简化的表示。本文中公开的本发明的具体设计特征,包括例如具体尺寸规格、方向、位置和形状部分由特殊要求的用途和使用环境来决定。
具体实施方式
如本文中所述,本发明包括一种具有多层结构的低噪声塑料中间冷却器管,该多层结构包括包含热塑性醚酯弹性体的表层;和隔音芯层。
在一种实施方案中,隔音芯层包含热塑性醚酯弹性体、玻璃泡、和热稳定剂。
在另一种实施方案中,表层与隔音芯层顺序堆叠,并且隔音芯层堆叠在表层上。
在再一种实施方案中,表层与隔音芯层顺序堆叠以形成二至五层结构。
在一种实施方案中,表层与隔音芯层中所含的热塑性醚酯弹性体是通过共聚合1,4-丁二烯、对苯二甲酸二甲酯和聚丁二醇制备的共聚物,和具有其中聚醚柔性链段与聚酯刚性链段交替分布的结构的嵌段共聚物。
在另一种实施方案中,表层的厚度为0.5至1.5毫米,隔音芯层的厚度为1.5至3毫米。
在再一种实施方案中,塑料中间冷却器管的总厚度为2至5毫米的范围。
在一种实施方案中,隔音芯层包含78至95重量%的热塑性醚酯弹性体、4至20重量%的玻璃泡和0.02至2重量%的热稳定剂。
在另一种实施方案中,热稳定剂包含选自N,N′-己烷-1,6-二基双(N,N’-hexane-1,6-diyl bis)、2,2′-间苯撑双(2-噁唑啉)和4,4′-双(α,α-二甲基苄基-二苯胺)的至少一种。
在再一种实施方案中,采用三维多层吹塑法制造塑料中间冷却器管。
本发明还提供包括本文中所描述的低噪声塑料中间冷却器管的汽车。
在下文中,将参照附图更为全面地描述本发明,在附图中显示了本发明的示例性实施方案。
在特别优选的实施方案中,本发明的具有多层结构的低噪声塑料中间冷却器管包括:具有热塑性醚酯弹性体(TEEE)的表层;和具有该TEEE、玻璃泡和热稳定剂的隔音芯层。
优选地,该示例性实施方案的低噪声塑料中间冷却器管可以具有其中表层与隔音芯层适当地堆叠的结构。在进一步优选的实施方案中,低噪声塑料中间冷却器管可以具有其中隔音芯层适当地堆叠在表层上的双层结构,如图1中所示的其中表层、隔音芯层和表层适当地顺序堆叠的三层结构,其中表层、隔音芯层、表层和隔音芯层适当地顺序堆叠的四层结构,或其中表层、隔音芯层、表层、隔音芯层和表层适当地顺序堆叠的五层结构。
在进一步优选的实施方案中,表层的厚度可以等于或大于0.5毫米,优选为0.5至1.5毫米的范围,且隔音芯层的厚度可以等于或大于1.5毫米,优选为1.5至3毫米的范围。在进一步优选的实施方案中,如果表层的厚度低于0.5毫米,该表层可能不具有足够的刚性。在另一种优选的实施方案中,如果表层的厚度大于1.5毫米,模塑性能可能劣化。在再一种实施方案中,如果隔音芯层的厚度低于1.5毫米,吸声性能可能不充分。在另一方面,如果隔音芯层的厚度大于3毫米,模塑性能可能劣化。
优选地,按照特定示例性实施方案,具有其中表层与隔音芯层堆叠的二至五层结构的低噪声塑料中间冷却器管的总厚度为2至5毫米。优选地,如果该低噪声塑料中间冷却器管的厚度低于2毫米,耐久性和吸声性能可能适当地劣化。在另一种优选的实施方案中,如果低噪声塑料中间冷却器管的厚度大于5毫米,中间冷却器管的弯曲模量可能适当地降低。
按照本发明的其它优选实施方案,表层与隔音芯层中所含的TEEE可以是通过共聚合1,4-丁二烯、对苯二甲酸二甲酯和聚丁二醇制备的共聚物,和具有其中聚醚柔性链段与聚酯刚性链段交替分布的结构的嵌段共聚物。优选地,该TEEE在高温和低温下具有比热塑性聚氨酯或热塑性聚烯烃更好的强度保持性能。此外,该TEEE可以具有优选为40至70D范围的肖氏硬度、和为20至40MPa的抗拉强度以适当地提高中间冷却器管的耐压性(最大:2.5巴)和用于管组装的灵活性。
按照进一步优选的实施方案,隔音芯层可以包括基于该隔音芯层总重量的78至95重量%的TEEE、4至20重量%的玻璃泡和0.02至2重量%的热稳定剂。
优选地,隔音芯层中所含的玻璃泡是空心的三维微球体。在再一种实施方案中,按照本实施方案,优选对隔音芯层提供发泡结构或多孔结构以吸收声音。在本文中,不特别限定玻璃泡。优选地,可以使用平均直径为40至130微米范围、优选为80至120微米范围的玻璃泡。
在进一步优选的实施方案中,如果玻璃泡的平均直径不在上述范围内,吸声效果可能适当地降低。优选地,玻璃泡的量可以为基于该隔音芯层总重量的4至20重量%。在某些特别的实施方案中,如果玻璃泡的量少于4重量%,减少噪声的效果可能不足。在某些其它实施方案中,如果玻璃泡的量大于20重量%,该中间冷却器管的机械性能可能适当地劣化。
按照其它进一步的实施方案,在隔音芯层中优选含有热稳定剂以适当地提高中间冷却器管在高温下的耐热性。优选地,热稳定剂可以包括选自N,N′-己烷-1,6-二基双、2,2′-间苯撑双(2-噁唑啉)和4,4′-双(α,α-二甲基苄基-二苯胺)的至少一种。在进一步优选的实施方案中,热稳定剂的量可以是基于隔音芯层总重量的0.02至2重量%。优选地,如果该稳定剂的量少于0.02重量%,可能得不到耐热性。在其它特定实施方案中,如果热稳定剂的量大于2重量%,该热稳定剂可能泄漏到产品的表面上。
在其它优选的实施方案中,可以采用三维多层吹塑法制造该低噪声塑料中间冷却器管,但是制造方法不限于此。
在下文中,将参照下列实施例详细描述一种或多种实施方案。但是,这些实施例不旨在限制本发明的目的和范围。
实施例
实施例1
在第一实施例中,通过聚合1,4-丁二烯、对苯二甲酸二甲酯与聚丁二醇制备的并具有55D的肖氏硬度和30的抗拉强度的TEEE(DuPont,Hytrel 42)用于形成表层。用于形成表层的TEEE、平均直径为100微米的玻璃泡、和如表1中列示的包括N,N′-己烷-1,6-二基双、2,2′-间苯双(2-噁唑啉)和4,4′-双(α,α-二甲基苄基-二苯胺)的热稳定剂用于形成隔音芯层。随后采用吹塑法制造具有双层结构的低噪声塑料中间冷却器管(直径为50毫米),该双层结构包括用上述材料形成的表层(厚度为1微米的内层)与隔音芯层(厚度为3微米的外层)。
实施例2至3
在另一组实施例中,以与实施例1相同的方式制造具有其中表层(厚度为0.5微米)、隔音芯层(厚度为3微米)和表层(厚度为0.5微米)顺序堆叠的三层结构的低噪声塑料中间冷却器管(实施例2)。以与实施例1相同的方式制造具有其中表层(厚度为0.5微米)、隔音芯层(厚度为2微米)、表层(厚度为0.5微米)和隔音芯层(厚度为2微米)顺序堆叠的四层结构的低噪声塑料中间冷却器管(实施例3)。
对比例1
使用肖氏硬度为50D和抗拉强度为30的TEEE(DuPont,Hytrel 42)通过三维多层吹塑法制造厚度为3毫米的单层塑料中间冷却器管。
对比例2
以与实施例2相同的方式制造具有三层结构的塑料中间冷却器管(直径为50毫米),除了该隔音芯层具有如表1中所述的组成。
表1
实验例1:测量物理性能
将按照实施例1制造的低噪声塑料中间冷却器管的层切割成适于表2中所述测试的片材,并采用表2的方法测量其物理性能。结果显示在表2中。
表2
测试方法 | 单位 | 表层 | 隔音芯层 | 塑料中间冷却器管所需性能 | |
抗拉强度 | ISO 527 | MPa | 30 | 28 | 25或更大 |
弯曲模量 | ISO 178 | MPa | 170 | 174 | 160或更大 |
比重 | ISO 1183 | g/cm3 | 1.16 | 1.05 | - |
玻璃化转变温度 | ISO 75f | ℃ | 50 | 52 | 45或更大 |
实验例2:噪声测试
如图2中所示,噪声由消声室中的扬声器产生并通过按照实施例1至3和对比例1和2制造的塑料中间冷却器管。用传声器测量通过该塑料中间冷却器管的噪声,结果显示在下面的表3中。
表3
参照表3,当比较根据对比例1制造的传统塑料中间冷却器管与根据实施例1至3制造的塑料中间冷却器管的结果时,在0至1,000Hz范围的频率时噪声是相似的。在1,000Hz或更高的频率时,来自实施例1至3的中间冷却器管的噪声比来自对比例1的中间冷却器管的噪声(100)低大约7至12%。来自按照对比例2的没有使用玻璃泡制造的具有三层结构的塑料中间冷却器管的噪声略低于按照对比例1制造的中间冷却器管,但是高于根据实施例1至3制造的中间冷却器管。因此,可以确认,使用玻璃泡提高了噪声屏蔽效果(吸声效果)。
优选地,具有多层结构的塑料中间冷却器管可以有效地应用于车用中间冷却器管。
虽然已经参照其示例性实施方案特别显示和描述了本发明,但本领域技术人员应该理解,可以在不脱离如下列权利要求所限定的本发明的精神与范围的情况下进行形式与细节方面的各种改变。
Claims (13)
1.具有多层结构的低噪声塑料中间冷却器管,所述多层结构包括:包含热塑性醚酯弹性体的表层;和包含所述热塑性醚酯弹性体、玻璃泡和热稳定剂的隔音芯层。
2.根据权利要求1所述的低噪声塑料中间冷却器管,其中所述表层和所述隔音芯层顺序堆叠,并且所述隔音芯层堆叠在所述表层上。
3.根据权利要求2所述的低噪声塑料中间冷却器管,其中所述表层和所述隔音芯层顺序堆叠以形成二至五层结构。
4.根据权利要求1所述的低噪声塑料中间冷却器管,其中在所述表层和所述隔音芯层中所含的所述热塑性醚酯弹性体是通过共聚合1,4-丁二烯、对苯二甲酸二甲酯和聚丁二醇制备的共聚物,和具有其中聚醚柔性链段与聚酯刚性链段交替分布的结构的嵌段共聚物。
5.根据权利要求1所述的低噪声塑料中间冷却器管,其中所述表层的厚度为0.5至1.5毫米,所述隔音芯层的厚度为1.5至3毫米。
6.根据权利要求5所述的低噪声塑料中间冷却器管,其中所述塑料中间冷却器管的总厚度为2至5毫米。
7.根据权利要求1所述的低噪声塑料中间冷却器管,其中所述隔音芯层包含78至95重量%的热塑性醚酯弹性体、4至20重量%的玻璃泡和0.02至2重量%的热稳定剂。
8.根据权利要求1所述的低噪声塑料中间冷却器管,其中所述热稳定剂包含选自N,N′-己烷-1,6-二基双、2,2′-间苯撑双(2-噁唑啉)和4,4′-双(α,α-二甲基苄基-二苯胺)的至少一种。
9.根据权利要求1所述的低噪声塑料中间冷却器管,其中采用三维多层吹塑法制造所述塑料中间冷却器管。
10.包括权利要求1所述的低噪声塑料中间冷却器管的汽车。
11.具有多层结构的低噪声塑料中间冷却器管,所述多层结构包括:包含热塑性醚酯弹性体的表层;和隔音芯层。
12.根据权利要求11所述的低噪声塑料中间冷却器管,其中所述隔音芯层包含所述热塑性醚酯弹性体、玻璃泡和热稳定剂。
13.包括权利要求11所述的低噪声塑料中间冷却器管的汽车。
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CN104565564A (zh) * | 2013-08-29 | 2015-04-29 | 现代自动车株式会社 | 带有低振动特性的车辆塑料中间冷却器管道 |
CN104565564B (zh) * | 2013-08-29 | 2019-07-12 | 现代自动车株式会社 | 带有低振动特性的车辆塑料中间冷却器管道 |
CN105298626A (zh) * | 2014-06-17 | 2016-02-03 | 现代自动车株式会社 | 防振中冷器管道 |
CN105298626B (zh) * | 2014-06-17 | 2019-05-14 | 现代自动车株式会社 | 防振中冷器管道 |
CN107355324A (zh) * | 2016-05-09 | 2017-11-17 | 丰田纺织株式会社 | 用于内燃机的空气滤清器 |
CN107355324B (zh) * | 2016-05-09 | 2019-07-16 | 丰田纺织株式会社 | 用于内燃机的空气滤清器 |
CN114083838A (zh) * | 2021-12-03 | 2022-02-25 | 青岛理工大学 | 一种具有低比模量插入层的夹层结构及其制备方法 |
Also Published As
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KR20110058345A (ko) | 2011-06-01 |
CN102080745B (zh) | 2016-01-20 |
US8257812B2 (en) | 2012-09-04 |
US20110120584A1 (en) | 2011-05-26 |
KR101198673B1 (ko) | 2012-11-12 |
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