CN105216386B - 一种高密度和低密度层合的吸音隔声复合非织造布 - Google Patents

一种高密度和低密度层合的吸音隔声复合非织造布 Download PDF

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CN105216386B
CN105216386B CN201510743178.XA CN201510743178A CN105216386B CN 105216386 B CN105216386 B CN 105216386B CN 201510743178 A CN201510743178 A CN 201510743178A CN 105216386 B CN105216386 B CN 105216386B
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nonwoven layer
density
sound
layer
low
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CN105216386A (zh
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杨树
于伟东
张菊芳
阮腾蛟
陈凯丽
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Jiaxing University
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Jiaxing University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter

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Abstract

一种高密度和低密度层合的吸音隔声复合非织造布，由n+1层高密非织造布和n层低密非织造布组成的，该非织造布的吸音隔声性能可以通过各层非织造布的密度、厚度以及n值来调节，利用各层非织造布在密度上的大小交替，形成一种轻质、高效的多层结构的复合非织造布。

Description

一种高密度和低密度层合的吸音隔声复合非织造布
技术领域
本发明涉及复合材料领域，特别涉及一种以非织造布与织物构成的多层结构的复合材料。
背景技术
非织造布在吸音隔声领域得到了广泛的应用，具有轻质、环保、高效吸声的优点。空气层在一定条件下可以增强非织造布的吸声效果，甚至在一定频域可以代替非织造布的效果。若能够通过非织造布和空气层多层结构的优化排列，实现对声波的高效阻隔，则既可以实现吸音隔声功能，又减轻了复合织物的重量。
目前对于涉及非织造布的多层复合吸声织物，已有的研究关注了由非织造布紧贴在三维泡沫材料上形成的多层隔声部件（2005年，多层隔声隔热部件，专利公开号CN1610611），由聚合物基热塑性材料和增强纤维形成的多层隔声材料（2008年，具有改进的结构、声学和热性能的非织造织物，专利公开号CN101115890），还有由PE和PP或PET构成的两层纺粘MINERVA层和由PE或PET或PP长丝纤维构成的加筋中间层组成的多层复合隔声织物（2008年，一种多组分纺粘非织造加筋复合材料及其制备方法，专利公开号CN101260616）。而并未见有涉及到高低密度非织造布交替层合的多层复合非织造布。
发明内容
为了解决现有的技术的不足，本发明提供了一种以非织造布与织物构成的多层结构的复合材料。
本发明采用的技术解决方案是：一种高密度和低密度层合的吸音隔声复合非织造布，所述的复合材料由n+1层高密非织造布层和n层低密非织造布层逐一层合成多层结构组成，所述的n值为正整数，所述的高密非织造布层位于低密非织造布层两侧，所述的高密非织造布层为0.8mm，所述的低密非织造布层为2mm。
所述的高密非织造布层和低密非织造布层交替排列排布，所述的高密非织造布层位于低密非织造布层两侧。
所述的复合材料由11层高密非织造布层和10层低密非织造布层组成。
所述的高密非织造布层密度高于0.2g/cm3，所述的低密非织造布层密度低于0.1g/cm3。
所述的高密非织造布层的孔隙率为85%-95%，所述的高密非织造布层平均孔径为5-10μm。
本发明的有益效果是：本发明提供了一种高密度和低密度层合的吸音隔声复合非织造布，由n+1层高密非织造布和n层低密非织造布组成的，该非织造布的吸音隔声性能可以通过各层非织造布的密度、厚度以及n值来调节，利用各层非织造布在密度上的大小交替，形成一种轻质、高效的多层结构的复合非织造布。
附图说明
图1是本发明所述的由n+1层高密非织造布和n层低密非织造布组成的复合非织造布的示意图。
图2是本发明所述的取n=1即两层的复合非织造布，逐一层合成多层结构的复合非织造布的示意图。
图3所示为高低密度交替层合对于非织造布吸音效果的增强。
图3(a)为各个非织造布样品在单独吸声时的作用曲线，图3(b)为经过层合后的复合非织造布样品的吸声曲线。
图1和图2中：
1-较高密度非织造布 2-较低密度非织造布。
具体实施方式
本发明提供了一种高密度和低密度层合的吸音隔声复合非织造布，所述的复合材料由n+1层高密非织造布层和n层低密非织造布层逐一层合成多层结构组成，所述的n值为正整数，所述的n值为正整数，所述的高密非织造布层位于低密非织造布层两侧，所述的高密非织造布层为0.8mm，所述的低密非织造布层为2mm，所述的高密非织造布层密度高于0.2g/cm3，所述的低密非织造布层密度低于0.1 g/cm3，所述的高密非织造布层的孔隙率为85%-95%，所述的高密非织造布层平均孔径为5-10μm。
通过以下实施例将有助于理解本发明，但并不限制本发明的内容。
本发明复合非织造布结构示意图如图1所示，由n+1层高密非织造布和n层低密非织造布组成复合非织造布。
如图2所示，取n=1即两层的复合非织造布，逐一层合成多层结构的复合非织造布。
图1和2所示的各层非织造布的厚度、孔隙率和平均孔径都可以调节。
图1和2所示的两种密度的非织造布的层数都可以调节。
以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (3)

1.一种高密度和低密度层合的吸音隔声复合非织造布，其特征在于，所述的复合材料由n+1层高密非织造布层和n层低密非织造布层逐一层合成多层结构组成，所述的n值为正整数，所述的高密非织造布层位于低密非织造布层两侧，所述的高密非织造布层为0.8mm，所述的低密非织造布层为2mm，所述的高密非织造布层密度高于0.2g/cm3，所述的低密非织造布层密度低于0.1 g/cm3，所述的高密非织造布层的孔隙率为85%-95%，所述的高密非织造布层平均孔径为5-10μm。
2.根据权利要求1所述的一种高密度和低密度层合的吸音隔声复合非织造布，其特征在于，所述的高密非织造布层和低密非织造布层交替排列排布，所述的高密非织造布层位于低密非织造布层两侧。
3.根据权利要求1所述的一种高密度和低密度层合的吸音隔声复合非织造布，其特征在于，所述的复合材料由11层高密非织造布层和10层低密非织造布层组成。
CN201510743178.XA 2015-11-05 2015-11-05 一种高密度和低密度层合的吸音隔声复合非织造布 Expired - Fee Related CN105216386B (zh)

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Citations (1)

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Publication number Priority date Publication date Assignee Title
US6635329B1 (en) * 1997-12-05 2003-10-21 Illbruck Gmbh Insulation element

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CN104441876B (zh) * 2013-09-25 2018-04-27 东丽纤维研究所（中国）有限公司 一种汽车用复合层状吸音材料

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6635329B1 (en) * 1997-12-05 2003-10-21 Illbruck Gmbh Insulation element

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