CN109486172A - 一种射频屏蔽材料及其制造方法 - Google Patents

一种射频屏蔽材料及其制造方法 Download PDF

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CN109486172A
CN109486172A CN201811346089.1A CN201811346089A CN109486172A CN 109486172 A CN109486172 A CN 109486172A CN 201811346089 A CN201811346089 A CN 201811346089A CN 109486172 A CN109486172 A CN 109486172A
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郭远浩
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Zhongshan Yifu Biotechnology Co Ltd
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Abstract

本发明公开了一种射频屏蔽材料，由通孔材料和外形不规则的无机共振物复合而成，通孔材料由一种或者多种的纤维材料与发泡树脂混合组成，无机共振物由至少一种金属组成，无机共振物为粒径小于5毫米的颗粒状或者片状，或者为直径小于5毫米的柱状或者丝状。该射频屏蔽材料，通过将通孔材料和外形不规则的无机共振物进行复合，从而可以通过削波作用和对电磁波的屏蔽作用，对射频的吸收效率可以达到80％以上，用在自动售货机中时可以避免相邻的商品上的RFID射频芯片互相干扰，进而不仅可以提高红酒信息读取的准确率，而且还可以有效阻止无人售货的“盒子”类的新型零售装置中的商品由于代表其身份标识的RFID信号被干扰导致商品逃逸。

Description

一种射频屏蔽材料及其制造方法
技术领域
本发明涉及复合材料，特别涉及一种射频屏蔽材料及其制造方法。
背景技术
“摩萄盒子”是在当今新零售环境下诞生的新兴无人销售模式。其主体为占地面积不到4平方米，高近2米的小玻璃房子。从外表看，它与商场超市里的自助KTV机有几分相似，但是玻璃房子里有几个红酒架，上面摆满了红酒。外面的玻璃门，有一个二维码，使用手机，对着玻璃门的二维码扫描，。注册后，玻璃门打开，走进“盒子”后，可以自由选购红酒架上的红酒。当拿起其中一款红酒，“盒子”里的一部显示器屏幕就有该款红酒的信息，还显示一个付款二维码，扫描二维码后即可进行购买并离开。再次过程中红酒的信息主要是通过红酒瓶上的RFID芯片进行读取。但是由于红酒架中存在多瓶红酒整齐地码放，相邻的红酒瓶上的RFID芯片容易互相干扰，导致设备无法准确度取红酒的信息，而且也不能判断红酒是否被取走，由此导致红酒逃逸的现象屡有发生。
由此，开发一种针对RFID射频的屏蔽材料就尤为重要。
发明内容
本发明的目的是提供一种射频屏蔽材料。
根据本发明的一个方面，提供了一种射频屏蔽材料，由通孔材料和外形不规则的无机共振物复合而成，通孔材料由一种或者多种的纤维材料与发泡树脂混合组成，无机共振物由至少一种金属组成，无机共振物为粒径小于5毫米的颗粒状或者片状的金属颗粒或者粉末，或者为直径小于5毫米的柱状或者丝状金属，无机共振物的总重量为通孔材料总重量的5％-40％，通孔材料中纤维材料与发泡树脂的重量比为1：0.5～1：3。
在一些实施方式中，纤维材料为天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种。
在一些实施方式中，无机共振物负载于构成通孔材料的天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维表面，或者均匀混合于发泡树脂的基料中。
在一些实施方式中，无机共振物负载于构成通孔材料的天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维表面，或者均匀混合于发泡树脂的基料中。
在一些实施方式中，负载有无机共振物的通孔材料涂覆于型材表面或者夹在型材内部构成夹心结构，型材由通孔材料制造且表面具有多个乳状凸起或其内部具有多个细密的空腔。
采用以上技术方案的射频屏蔽材料，通过将通孔材料和外形不规则的无机共振物进行复合，从而可以通过削波作用和对电磁波的屏蔽作用，对射频的吸收效率可以达到80％以上，用在自动售货机中时可以避免相邻的商品上的RFID射频芯片互相干扰，进而不仅可以提高红酒信息读取的准确率，而且还可以有效阻止无人售货的“盒子”类的新型零售装置中的商品由于代表其身份标识的RFID信号被干扰导致商品逃逸。
本发明的另一个目的是提供一种射频屏蔽材料的制造方法，包括以下步骤：
(1)、将纤维材料置于含有金属粉末的环境中，从而将金属粉末富集于纤维材料的纤维表面，纤维材料为天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种；
(2)、控制金属粉末的富集量，使金属粉末的总重量为纤维材料总重量5％-40％，金属粉末的总重量和纤维材料总重量均通过各自的重量与密度计算得知；
(3)、将富集有金属粉末的纤维材料混合于发泡树脂中成型成需要的形状。
在一些实施方式中，金属粉末通过气相沉积或者液相沉积富集于纤维材料的纤维表面。
本发明的另一个目的是提供一种射频屏蔽材料的制造方法，包括以下步骤：
(1)、将粒径小于5毫米的颗粒状或者片状的金属粉末，或者为直径小于5毫米的柱状或者丝状的金属丝均匀混合于聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料中；
(2)将混合有金属粉末或者金属丝的聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料与天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种混合均匀后再进行发泡成型加工成需要的形状。
本发明的又一个目的是提供一种射频屏蔽材料的制造方法，包括以下步骤：
(1)、将粒径小于0.5毫米的颗粒状或者片状的金属粉末，或者为直径小于0.5毫米的柱状或者丝状的金属丝均匀混合于聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料中；
(2)将混合有所述金属粉末或者金属丝的聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料与天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种混合均匀后再加工成薄膜。
具体实施方式
下面对本发明作进一步详细的说明。
实施例1
采用以下方法制造射频屏蔽材料：
(1)、将棉麻丝纤维15重量份与聚氨酯基料5重量份充分混合，使棉麻纤维表面完全浸润，取铜粉10重量份和铝粉10重量份混合均匀后分5～7次使用60目筛网筛在浸润后的棉麻纤维表面，边筛边翻动棉麻纤维，使铜铝粉末均匀地负载于棉麻纤维的表面；
(2)、加入玻璃纤维10重量份，与负载铜铝粉末的棉麻纤维混合均匀，玻璃纤维和棉麻纤维的长度不超过5cm为宜；
(3)、将混合后的纤维分开，防止成团，静置至聚氨酯基料表干，使铜铝粉末固定在棉麻纤维和玻璃纤维表面；
(4)、将混合后的纤维分5～10次分批加入50重量份聚氨酯基料中，搅拌均匀后，使用发泡设备进行发泡成型加工成板状或者其他需要的形状。
在其他的实施例中，无机共振物还可以为粒径小于5毫米的颗粒状或者片状的金属粉末或者颗粒，或者为直径小于5毫米的柱状或者丝状金属，无机共振物的总重量为通孔材料总重量的5％-40％。在一些实施方式中，其特征在于，纤维材料为天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种。
在另外的实施例中，金属粉末还可以通过气相沉积或者液相沉积富集于纤维材料的纤维表面。
在另外的一些实施例中，无机共振物的总重量为通孔材料总重量的5％-40％，通孔材料中纤维材料与发泡树脂的重量比为1：0.5～1：3
采用以上技术方案的射频屏蔽材料，通过将通孔材料和外形不规则的无机共振物进行复合，从而可以通过削波作用和对电磁波的屏蔽作用，对射频的吸收效率可以达到80％以上，用在自动售货机中时可以避免相邻的商品上的RFID射频芯片互相干扰，进而不仅可以提高红酒信息读取的准确率，而且还可以有效阻止无人售货的“盒子”类的新型零售装置中的商品由于代表其身份标识的RFID信号被干扰导致商品逃逸。
实施例2
采用以下方法制造射频屏蔽材料：
(1)、将粒径小于5毫米的铁粉末2重量份和直径小于5毫米的铜丝3重量份均匀混合于由聚苯乙烯基料40重量份、聚氯乙烯基料25重量份组成的发泡树脂中，铜丝的长度小于3cm；
(2)在搅拌条件下分3～7次加入涤纶纤维20重量份和石棉纤维10重量份，搅拌均匀后，使用发泡设备进行发泡成型加工成厚度为0.5～1cm的膜状或者其他需要的形状。
在另外的一些实施例中，负载有无机共振物的通孔材料还可以涂覆于型材表面或者夹在型材内部构成夹心结构，型材由通孔材料制造且表面具有多个乳状凸起或其内部具有多个细密的空腔。
实施例3
采用以下方法制造射频屏蔽材料薄膜：
(1)、将粒径小于0.5毫米的铁粉末2重量份和粒径小于0.5毫米的铝粉末3重量份直均匀混合于由聚乙烯基料40重量份、聚氯乙烯基料25重量份组成的树脂中，铜丝的长度小于1cm；
(2)在搅拌条件下分3～7次加入涤纶纤维20重量份和石棉纤维10重量份，搅拌均匀后，成型加工成厚度为0.1～1cm的薄膜。
该射频屏蔽材料薄膜可以任意剪裁并粘贴于物体的表面。
以上所述的仅是本发明的一些实施方式。对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。

Claims (9)

1.一种射频屏蔽材料，其特征在于，由通孔材料和外形不规则的无机共振物复合而成，所述通孔材料由一种或者多种的纤维材料与发泡树脂混合组成，所述无机共振物由至少一种金属组成，所述无机共振物为粒径小于5毫米的颗粒状或者片状金属，或者为直径小于0.5毫米的柱状或者丝状金属，所述无机共振物的总重量为通孔材料总重量的5％-40％，所述通孔材料中所述纤维材料与所述发泡树脂的重量比为1：0.5～1：3。
2.根据权利要求1所述的射频屏蔽材料，其特征在于，其特征在于，所述纤维材料为天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种。
3.根据权利要求2所述的射频屏蔽材料，其特征在于，所述无机共振物负载于构成所述通孔材料的天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维表面，或者均匀混合于所述发泡树脂的基料中。
4.根据权利要求3所述的射频屏蔽材料，其特征在于，所述无机共振物负载于构成所述通孔材料的天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维表面，或者均匀混合于所述发泡树脂的基料中。
5.根据权利要求4所述的射频屏蔽材料，其特征在于，负载所述有无机共振物的所述通孔材料涂覆于型材表面或者夹在型材内部构成夹心结构，所述型材由所述通孔材料制造且表面具有多个乳状凸起或其内部具有多个细密的空腔。
6.一种射频屏蔽材料的制造方法，其特征在于，包括以下步骤：
(1)、将纤维材料置于含有金属粉末的环境中，从而将金属粉末富集于纤维材料的纤维表面，所述纤维材料为天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种；
(2)、控制所述金属粉末的富集量，使所述金属粉末的总重量为所述纤维材料总重量5％-40％，所述金属粉末的总重量和所述纤维材料总重量均通过各自的重量与密度计算得知；
(3)、将富集有所述金属粉末的所述纤维材料混合于发泡树脂中成型成需要的形状。
7.根据权利要求6所述的射频屏蔽材料的制造方法，其特征在于，所述金属粉末通过气相沉积或者液相沉积富集于所述纤维材料的纤维表面。
8.一种射频屏蔽材料的制造方法，其特征在于，包括以下步骤：
(1)、将粒径小于5毫米的颗粒状或者片状的金属粉末，或者为直径小于0.5毫米的柱状或者丝状的金属丝均匀混合于聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料中；
(2)将混合有所述金属粉末或者金属丝的聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料与天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种混合均匀后再进行发泡成型加工成需要的形状。
9.一种射频屏蔽材料的制造方法，其特征在于，包括以下步骤：
(1)、将粒径小于0.5毫米的颗粒状或者片状的金属粉末，或者为直径小于0.5毫米的柱状或者丝状的金属丝均匀混合于聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料中；
(2)将混合有所述金属粉末或者金属丝的聚乙烯基料、聚苯乙烯基料、聚氯乙烯基料或者聚氨酯基料与天然植物纤维、有机合成纤维、石棉纤维或者玻璃纤维中的任意一种或者多种混合均匀后再加工成薄膜。
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US11421111B2 (en) 2019-04-12 2022-08-23 Eckart Gmbh Radar frequency transparent effect pigment mixture, formulations and coatings thereof
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