CN111976250A - 基于绣花结构的有频率选择特性电磁屏蔽织物及制备方法 - Google Patents
基于绣花结构的有频率选择特性电磁屏蔽织物及制备方法 Download PDFInfo
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Abstract
本发明公开了基于绣花结构的有频率选择特性电磁屏蔽织物及制备方法,具体涉及智能纺织品技术领域,包括贴布,所述贴布的外侧设有基层,所述基层的表面穿有导电纱线,所述贴布与基层通过缝合固定,一种基于绣花结构的具有频率选择特性电磁屏蔽织物的制备方法,包括以下步骤:S1:导电性测试,运用数字万用表,以恒定电流为3A为前提,测试导电纱线每5cm的电阻;S2:根据电磁屏蔽机理和基于结构频率选择机制,设计出具有良好电磁屏蔽效能和频率选择特性结构与纹样的图形。本发明构成形式简单,往复循环,连绵不断,能够以相对较少的导电纱线绣出饱满的图案,能够节省成本,不易变形和拉断,且电磁屏蔽效能较好。
Description
技术领域
本发明涉及智能纺织品技术领域,更具体地说,本发明涉及基于绣花结构的有频率选择特性电磁屏蔽织物及制备方法。
背景技术
随着科技的发展和人民生活水平的不断提高,各种各样的高科技电子产品已经成为人们生活不可或缺的一部分,如手机、电脑、微波炉,这些电子产品所产生的电磁辐射越来越严重,电磁屏蔽织物能够减少和避免这种电磁辐射对人体造成的伤害,随着时间的推移,电磁屏蔽织物的质量和性能也逐渐提高。
现有的电磁屏蔽织物其一般是简单地使用电导纱线横向和纵向布置在布料内,其极易变形和拉断,影响电磁屏蔽效果,且美观度较低。
在所述背景技术部分公开的上述信息仅用于加强对本公开的背景的理解,因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
为了克服现有技术的上述缺陷,本发明的实施例提供基于绣花结构的有频率选择特性电磁屏蔽织物及制备方法,本发明所要解决的技术问题是:现有的电磁屏蔽织物其一般是简单地使用电导纱线横向和纵向布置在布料内,其极易变形和拉断,影响电磁屏蔽效果,且美观度较低。
为实现上述目的,本发明提供如下技术方案:一种基于绣花结构的有频率选择特性电磁屏蔽织物,包括贴布,所述贴布的外侧设有基层,所述基层的表面穿有导电纱线,所述贴布与基层通过缝合固定。
在一个优选的实施方式中,所述基层为涤棉混纺布。
在一个优选的实施方式中,所述贴布为铜镍金属贴布、不锈钢金属纤维、含银锦纶、不锈钢纤维、涤纶混纺纱中的一种或几种。
一种基于绣花结构的有频率选择特性电磁屏蔽织物的制备方法,包括以下步骤:
S1:导电性测试,运用数字万用表,以恒定电流为3A为前提,测试导电纱线每5cm的电阻;
S2:根据电磁屏蔽机理和基于结构频率选择机制,设计出具有良好电磁屏蔽效能和频率选择特性结构与纹样的图形;
S3:将步骤S2中设计好的图形临摹在基层上;
S4:选择一种具有电损耗或磁损耗的导电纱线,将导电纱线穿入绣花针内,从外至内依次用回针技法,绣入量为0.5~1mm,在基层上将步骤S3中临摹图形的所有的线条绣完,得到绣花;
S5:将贴布和基层缝制层合,得到电磁屏蔽织物;
S6:测试并计算步骤S5中得到的电磁屏蔽织物的电磁屏蔽效能、频率选择特性和电阻特性。
在一个优选的实施方式中,所述导电纱线为不锈钢金属纤维、含银锦纶、不锈钢纤维、涤纶混纺纱中的一种或几种。
本发明的技术效果和优点:
1、本发明构成形式简单,往复循环,连绵不断,能够以相对较少的导电纱线绣出饱满的图案,能够节省成本,不易变形和拉断,且电磁屏蔽效能较好;
2、本发明结构新颖,造型独特,且较为美观,具有较高的吸引力,适应市场需求,推广价值高。
附图说明
图1为本发明制备方法流程图。
图2为本发明的剖面结构示意图。
图3为本发明的第一设计图案。
图4为本发明的第二设计图案。
图5为本发明铜镍金属贴布的图案一。
图6为本发明铜镍金属贴布的图案二。
图7为本发明电磁屏蔽织物试样1的频率效能。
图8为本发明电磁屏蔽织物试样2的频率效能。
图9为本发明电磁屏蔽织物试样3的频率效能。
图10为本发明电磁屏蔽织物试样4的频率效能。
图11为本发明铜镍金属贴布图案一的电磁屏蔽效能(试样5)。
图12为本发明铜镍金属贴布图案二的电磁屏蔽效能(试样6)。
图13为本发明不锈钢纤维(试样1)/含银锦纶(试样2)层合的电磁屏蔽效能。
图14为本发明不锈钢纤维(试样1)/铜镍金属贴布图案一(试样5)层合的电磁屏蔽效能。
图15为本发明不锈钢纤维绣花(试样1)与铜镍金属布贴布图案一(试样5)相同图案时的电磁屏蔽效能。
图16为本发明含镍金属贴布图案一(试样5)与铜镍金属贴布图案二(试样6)相同图案时的电磁屏蔽效能。
附图标记为:1导电纱线、2基层、3贴布。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而,示例实施方式能够以多种形式实施,且不应被理解为限于在此阐述的范例;相反,提供这些示例实施方式使得本公开的描述将更加全面和完整,并将示例实施方式的构思全面地传达给本领域的技术人员。附图仅为本公开的示意性图解,并非一定是按比例绘制。图中相同的附图标记表示相同或类似的部分,因而将省略对它们的重复描述。
此外,所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多示例实施方式中。在下面的描述中,提供许多具体细节从而给出对本公开的示例实施方式的充分理解。然而,本领域技术人员将意识到,可以实践本公开的技术方案而省略所述特定细节中的一个或更多,或者可以采用其它的方法、组元、步骤等。在其它情况下,不详细示出或描述公知结构、方法、实现或者操作以避免喧宾夺主而使得本公开的各方面变得模糊。
本发明提供了一种基于绣花结构的有频率选择特性电磁屏蔽织物,包括贴布3,所述贴布3的外侧设有基层2,所述基层2的表面穿有导电纱线1,所述贴布3与基层2通过缝合固定。
所述基层2为涤棉混纺布。
所述贴布3为铜镍金属贴布、不锈钢金属纤维、含银锦纶、不锈钢纤维、涤纶混纺纱中的一种或几种。
一种基于绣花结构的有频率选择特性电磁屏蔽织物的制备方法,包括以下步骤:
S1:导电性测试,运用数字万用表,以恒定电流为3A为前提,测试导电纱线每5cm的电阻;
S2:根据电磁屏蔽机理和基于结构频率选择机制,设计出具有良好电磁屏蔽效能和频率选择特性结构与纹样的图形;
S3:将步骤S2中设计好的图形临摹在基层2上;
S4:选择一种具有电损耗或磁损耗的导电纱线,将导电纱线1穿入绣花针内,从外至内依次用回针技法,绣入量为0.5~1mm,在基层2上将步骤S3 中临摹图形的所有的线条绣完,得到绣花;
S5:将贴布3和基层2缝制层合,得到电磁屏蔽织物;
S6:测试并计算步骤S5中得到的电磁屏蔽织物的电磁屏蔽效能、频率选择特性和电阻特性。
所述导电纱线1为不锈钢金属纤维、含银锦纶、不锈钢纤维、涤纶混纺纱中的一种或几种。
如图1-6所示,选择不锈钢金属纤维、含银率为18%的含银锦纶、不锈钢纤维/涤纶混纺纱,导电率从大到小依次排列为不锈钢金属纤维>含银锦纶>不锈钢纤维/涤纶混纺纱,导电性测试运用泰克DMM6500六位半台式数字万用表,以恒定电流为3A为前提,测试导电纱线每5cm的电阻:
表1三种导电纱线所对应的导电性情况
导电纱线种类 | 不锈钢金属纤维 | 含银锦纶 | 不锈钢/涤纶混纺纱 |
每5cm电阻 | 2Ω | 13.5Ω | 680Ω |
实施例1:
将第一设计图案临摹在基层2上,选择不锈钢纤维/涤纶混纺纱,将不锈钢纤维/涤纶混纺纱穿入绣花针内,从外至内依次用回针技法,绣入量为1mm,在基层2上将临摹图形的所有的线条绣完,得到绣花,测试并计算绣花的电磁屏蔽效能、频率选择特性和电阻特性,然后将电磁屏蔽织物旋转45度再次测试,如图7所示。
实施例2:
将第一设计图案临摹在基层2上,选择不锈钢纤维/涤纶混纺纱,将不锈钢纤维/涤纶混纺纱穿入绣花针内,从外至内依次用回针技法,绣入量为 0.5mm,在基层2上将临摹图形的所有的线条绣完,得到绣花,测试并计算绣花的电磁屏蔽效能、频率选择特性和电阻特性,然后将电磁屏蔽织物旋转45 度再次测试,如图8所示
实施例3:
将第一设计图案临摹在基层2上,选择含银锦纶,将含银锦纶穿入绣花针内,从外至内依次用回针技法,绣入量为0.5mm,在基层2上将临摹图形的所有的线条绣完,得到绣花,测试并计算绣花的电磁屏蔽效能、频率选择特性和电阻特性,然后将电磁屏蔽织物旋转45度再次测试,如图9所示
实施例4:
将第二设计图案临摹在基层2上,选择不锈钢金属纤维,将不锈钢金属纤维穿入绣花针内,从外至内依次用回针技法,绣入量为0.5mm,在基层2上将临摹图形的所有的线条绣完,得到绣花,测试并计算绣花的电磁屏蔽效能、频率选择特性和电阻特性,然后将电磁屏蔽织物旋转45度再次测试,如图10 所示。
实施例5:
试样在翻转不同角度后的电磁屏蔽效能,如图11和图12所示。
表5.1铜镍金属贴布图案一(试样5)的电磁屏蔽效能
测试对象 | 波峰(dB) | 波谷(dB) | 平均值(dB) |
试样5#铜镍金属贴布 | 22.36 | 0.48 | 10.94 |
试样5#铜镍金属贴布(翻转45°) | 26.19 | 0.57 | 10.80 |
表5.2铜镍金属贴布图案二(试样6)的电磁屏蔽效能
测试对象 | 波峰(dB) | 波谷(dB) | 平均值(dB) |
试样6#铜镍金属贴布 | 26.61 | 5.92 | 14.54 |
试样6#铜镍金属贴布(翻转45°) | 40.20 | 9.81 | 17.40 |
由上述数据和图像也可以发现,在排除掉一些可能影响实验数据的情况下,同种材料、同种图案制成的试样的电磁屏蔽效能会呈现不同的状态。试样5由于是回纹结构较为紧密,再旋转45°之后并不会影响试样表面的金属结构,所以其电磁屏蔽效能不会受到试样翻转角度的影响。而试样6是格栅结构,图形内部有明显的空缺,所以在图形翻转后,其表面结构发生变化导致其表面屏蔽选择发生变化,从而导致织物的电磁屏蔽效能会随着试样的翻转发生变化。
实施例6:
不同种绣线材料的织物复合产生的电磁屏蔽效能,如图13和图14所示。
表5.3不锈钢纤维(试样1)/含银锦纶(试样2)层合的电磁屏蔽效能
表5.4不锈钢纤维(试样1)/铜镍金属贴布图案一(试样5)层合的电磁屏蔽效能
通过将不锈钢纤维所制成的试样分别与含银锦纶、铜镍贴布相重叠测量其电磁屏蔽效能可以读出以下结论:
贴合织物的电磁屏蔽效能的峰值与电磁波频率范围内的电磁屏蔽效能的平;
均值大于其中任何一种试样的电磁屏蔽效能的峰值和平均值,但不是线性叠加。
实施例7:
不同材料在相同图案时的电磁屏蔽效能,如图15所示。
表5.5不锈钢纤维(试样1)与铜镍金属贴布图案一(试样5)的电磁屏蔽效能
测试对象 | 波峰(dB) | 波谷(dB) | 平均值(dB) |
试样1#不锈钢纤维绣花 | 24.15 | 0 | 10.32 |
试样5#铜镍金属贴布 | 22.36 | 0.48 | 10.94 |
由试样在不同电磁波频率得到的电磁屏蔽效能的数据及上述图表可以发现,虽然试样1和试样5的结构一样,但是两者的材料和单元形式截然不同,试样1由线构成而试样5则主要由面构成,这影响了试样的频率选择表面,所以两种不同的试样的电磁屏蔽效能特征也不相同。
实施例8:
相同材料/不同图案的铜镍贴布的电磁屏蔽效能,如图16所示。
表5.6铜镍金属贴布图案一(试样5)/铜镍金属贴布图案二(试样6) 的电磁屏蔽效能
测试对象 | 波峰(dB) | 波谷(dB) | 平均值(dB) |
试样5#铜镍金属贴布 | 22.36 | 0.48 | 10.94 |
试样6#铜镍金属贴布 | 26.61 | 5.92 | 14.54 |
由上述数据可以发现在相同材料的情况下,织物的电磁屏蔽效能也会随着图案结构的不同而发生变化。
最后应说明的几点是:首先,在本申请的描述中,需要说明的是,除非另有规定和限定,术语“安装”、“相连”、“连接”应做广义理解,可以是机械连接或电连接,也可以是两个元件内部的连通,可以是直接相连,“上”、“下”、“左”、“右”等仅用于表示相对位置关系,当被描述对象的绝对位置改变,则相对位置关系可能发生改变;
其次:本发明公开实施例附图中,只涉及到与本公开实施例涉及到的结构,其他结构可参考通常设计,在不冲突情况下,本发明同一实施例及不同实施例可以相互组合;
最后:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.一种基于绣花结构的有频率选择特性电磁屏蔽织物,包括贴布(3),其特征在于:所述贴布(3)的外侧设有基层(2),所述基层(2)的表面穿有导电纱线(1),所述贴布(3)与基层(2)通过缝合固定。
2.根据权利要求1所述的一种基于绣花结构的有频率选择特性电磁屏蔽织物,其特征在于:所述基层(2)为涤棉混纺布。
3.根据权利要求1所述的一种基于绣花结构的有频率选择特性电磁屏蔽织物,其特征在于:所述贴布(3)为铜镍金属贴布、不锈钢金属纤维、含银锦纶、不锈钢纤维、涤纶混纺纱中的一种或几种。
4.根据权利要求1~3任一项所述的一种基于绣花结构的有频率选择特性电磁屏蔽织物的制备方法,其特征在于:包括以下步骤:
S1:导电性测试,运用数字万用表,以恒定电流为3A为前提,测试导电纱线每5cm的电阻;
S2:根据电磁屏蔽机理和基于结构频率选择机制,设计出具有良好电磁屏蔽效能和频率选择特性结构与纹样的图形;
S3:将步骤S2中设计好的图形临摹在基层(2)上;
S4:选择一种具有电损耗或磁损耗的导电纱线,将导电纱线(1)穿入绣花针内,从外至内依次用回针技法,绣入量为0.5~1mm,在基层(2)上将步骤S3中临摹图形的所有的线条绣完,得到绣花;
S5:将贴布(3)和基层(2)缝制层合,得到电磁屏蔽织物;
S6:测试并计算步骤S5中得到的电磁屏蔽织物的电磁屏蔽效能、频率选择特性和电阻特性。
5.根据权利要求4所述的一种基于绣花结构的有频率选择特性电磁屏蔽织物的制备方法,其特征在于:所述导电纱线(1)为不锈钢金属纤维、含银锦纶、不锈钢纤维、涤纶混纺纱中的一种或几种。
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