CN113512226A - 一种用于防毫米波雷达伪装网的泡棉基材及其加工工艺 - Google Patents
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Abstract
本发明涉及一种用于防毫米波雷达伪装网的泡棉基材及其加工工艺，属于伪装网技术领域。泡棉材料由以下成分混合：60～80质量份的聚乙烯或聚丙烯或聚烯烃、1～10质量份的改性碳纳米管、1～5质量份的改性石墨烯、1～5质量份的稀土、1～10质量份的阻燃剂、1～10质量份的发泡剂、2～20质量份的敏化剂和2～5质量份的抗氧化剂，再依次进行挤片、辐照、高温发泡，最后在片材的单面或双面压制小型的米粒纹而成；本发明制成泡棉基材上设置小型米粒纹，能解决对高频段的毫米波雷达的吸收和屏蔽作用。
Description
技术领域
本发明属于伪装网技术领域，具体涉及一种用于防毫米波雷达伪装网的泡棉基材及其加工工艺。
背景技术
伪装网是一种重要的伪装遮障器材，在战场上是兵器装备、军事设施等军事目标的“保护伞”。
伪装网主要由底网和网面组成，早期的81伪装网的底网采用金属丝编入织物中，随后的87伪装网的底网则采用不锈钢短纤维混纺于织物的纺织线中，再到95伪装网采用热隔绝层，即由内表面涂有高反射涂层，外表面涂有高、低不同发射率涂层的热隔绝布，经冲孔缝制而成，这些材料制成的底网厚度不易调节，质量重。
现有伪装网主要工作原理通过材料对各种频段电子波的反射和吸收，从而达到屏蔽效果。一般是在网面上涂覆各种防护层以及压制大型的不同花纹，而网面上的大型花纹主要起到防低频波的作用，而对于毫米波雷达的防护主要是通过涂覆毫米波雷达吸收涂层，但实际使用中，想仅通过防护涂层的吸收功能还是很难实现对毫米波雷达的完全屏蔽。
发明内容
本发明所要解决的技术问题是：提供一种用于毫米波雷达屏蔽伪装网的米粒纹泡棉材料及其加工工艺，制成的泡棉片材上设置小型米粒纹，能解决对高频段的毫米波雷达的吸收和屏蔽作用。
本发明所采取的技术方案是：
一种用于防毫米波雷达伪装网的泡棉基材，泡棉基材表面设有花纹，所述花纹大小为0.5～3mm，花纹间隙为0.1～3mm，花纹凸起高度为0.1～2mm，所述泡棉材料由以下成分混合而成：
60～80质量份的聚乙烯或聚丙烯或聚烯烃、1～10质量份的改性碳纳米管、1～5质量份的改性石墨烯、1～5质量份的稀土、1～10质量份的阻燃剂、1～10质量份的发泡剂、2～20质量份的敏化剂和2～5质量份的抗氧化剂。
进一步的，所述花纹采用米粒纹。
进一步的，所述聚乙烯或聚丙烯或聚烯烃混合前需磨成粉，颗粒在7000～8000目。
进一步的，所述改性碳纳米管和改性石墨烯在混合前先加入偶联剂、抗静电剂进行分散改性。
进一步的，所述阻燃剂采用三聚氰胺类阻燃剂或Mg(OH)2或Al(OH)3。
进一步的，所述发泡剂采用亚硝基、二磺酰肼笨、碳黑中的一种或几种。
进一步的，所述敏化剂采用二烷氧基苯乙酮或氯化苯乙酮衍生物。
进一步的，所述抗氧化剂采用二丁基羟基甲苯或丁基羟基茴香醚。
一种用于防毫米波雷达伪装网的泡棉基材的加工工艺，包括如下步骤：
步骤一.将泡棉材料各成分加入搅拌机中混合、搅拌均匀；
步骤二.将混合料送入挤片机中挤压成片状；
步骤三.在常温下进行辐照处理；
步骤四.在250～280℃下进行高温发泡处理；
步骤五.对发泡处理后的片材单面或双面压制小型的米粒花纹。
进一步的，所述步骤五制成后的泡棉片材单层厚度为0.5～1mm，所述泡棉基材可采用单层直接用于伪装网中，或采用多层通过热复合或胶粘进行任意叠加使用，其叠加后的泡棉厚度为1～10mm。
本发明的有益效果是：本发明采用特殊配方混合挤压成型，在其表面压制小型的米粒花纹，可以对-15dB以外的高频段电子波的散射，以及配合改性碳纳米管等成分对雷达波的吸收，从而解决对毫米波雷达的防护和屏蔽问题；本发明的泡棉基材还具有很好的超导电、阻燃、高强度、抗拉伸、不易霉烂、抗风化、抗日晒、厚度易控制、质量轻、使用寿命长等诸多优点。
附图说明
图1为本发明压制有米粒纹的泡棉基材示意图；
图2为使用表面光滑的泡棉基材的伪装网防电子波测试曲线图；
图3为使用表面压制米粒纹的泡棉基材的伪装网防电子波测试曲线图。
具体实施方式
下面结合实施例对本发明的具体实施方式进行详细说明。
实施例1
一种用于防毫米波雷达伪装网的泡棉基材，所述泡棉基材由以下成分混合而成：
70质量份的聚烯烃、8质量份的改性碳纳米管、4质量份的改性石墨烯、4质量份的稀土、8质量份的三聚氰胺类阻燃剂、8质量份的亚硝基发泡剂、10质量份的二烷氧基苯乙酮敏化剂和4质量份的二丁基羟基甲苯抗氧化剂。
将上述成分加入搅拌机中混合、搅拌均匀，混合前聚烯烃需磨成粉，颗粒在7000～8000目，所述改性碳纳米管和改性石墨烯在混合前先加入0.5%的钛酸酯偶联剂、0.2%阳离子型的季胺盐类抗静电剂进行分散改性。
再将混合料送入挤片机中挤压成片状。
在常温下对上述片材进行辐照处理。
然后在250～280℃下进行高温发泡处理。
最后采用带米粒花纹的压花辊对片材的单面或双面压制小型的米粒花纹，压花辊内通入循环的冷却水，压花的同时进行冷却。所述花纹大小为0.5～3mm，花纹间隙为0.1～3mm，花纹凸起高度为0.1～2mm。
当然本发明泡棉基材表面压制的小型花纹并不局限于米粒纹，也可采用其它形状的花纹替代。
本发明制成后的泡棉片材单层厚度为0.5～1mm，所述泡棉基材可采用单层片材直接用于伪装网中，或采用多层通过热复合或胶粘进行任意叠加使用，其叠加后的泡棉厚度为1～10mm。其用于伪装网上的泡棉厚度易控制。泡棉基材采用单层片材时，具有厚度薄，重量轻等优点；但是采用多层片材叠加使用，其防雷达波效果则更好。
如图1所示，本发明在泡棉基材1的表面压制小型的米粒花纹11，可以散射掉绝大部分的毫米波雷达，再配合材料自身对毫米波雷达的吸收，从而解决了完全屏蔽毫米波雷达的问题。本发明的泡棉基材还具有很好的超导电、阻燃、高强度、抗拉伸、不易霉烂、抗风化、抗日晒、厚度易控制、质量轻、使用寿命长等诸多优点。
如图2所示，伪装网使用表面无小型花纹的泡棉基材时，经测试，仅能防止-15dBz波段以上的电子波，符合现在一般军工要求。
但是泡棉基材上压制有小型米粒纹时，经测试，如图3所示，能防止-30dB波段以上的电子波，其有效屏蔽高频段电子波段的范围明显增大，其防护电子波的性能明显增强。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围内。本发明要求保护范围由所附的权利要求书及其等同物界定。
Claims (10)
1.一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：泡棉基材表面设有花纹，所述花纹大小为0.5～3mm，花纹间隙为0.1～3mm，花纹凸起高度为0.1～2mm，所述泡棉材料由以下成分混合而成：
60～80质量份的聚乙烯或聚丙烯或聚烯烃、1～10质量份的改性碳纳米管、1～5质量份的改性石墨烯、1～5质量份的稀土、1～10质量份的阻燃剂、1～10质量份的发泡剂、2～20质量份的敏化剂和2～5质量份的抗氧化剂。
2.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述花纹采用米粒纹。
3.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述聚乙烯或聚丙烯或聚烯烃混合前需磨成粉，颗粒在7000～8000目。
4.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述改性碳纳米管和改性石墨烯在混合前先加入偶联剂、抗静电剂进行分散改性。
5.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述阻燃剂采用三聚氰胺类阻燃剂或Mg(OH)2或Al(OH)3。
6.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述发泡剂采用亚硝基、二磺酰肼笨、碳黑中的一种或几种。
7.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述敏化剂采用二烷氧基苯乙酮或氯化苯乙酮衍生物。
8.如权利要求1所述的一种用于防毫米波雷达伪装网的泡棉基材，其特征在于：所述抗氧化剂采用二丁基羟基甲苯或丁基羟基茴香醚。
9.一种如权利要求1～8任一所述的用于防毫米波雷达伪装网的泡棉基材的加工工艺，其特征在于包括如下步骤：
步骤一.将泡棉材料各成分加入搅拌机中混合、搅拌均匀；
步骤二.将混合料送入挤片机中挤压成片状；
步骤三.在常温下进行辐照处理；
步骤四.在250～280℃下进行高温发泡处理；
步骤五.对发泡处理后的片材单面或双面压制小型的米粒花纹。
10.如权利要求9所述的一种用于防毫米波雷达伪装网的泡棉基材的加工工艺，其特征在于：所述步骤五制成后的泡棉片材单层厚度为0.5～1mm，所述泡棉基材可采用单层直接用于伪装网中，或采用多层通过热复合或胶粘进行任意叠加使用，其叠加后的泡棉厚度为1～10mm。
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| JP2961171B1 (ja) * | 1998-06-05 | 1999-10-12 | 防衛庁技術研究本部長 | 広帯域シンタクチックフォーム電波吸収材料 |
| US20020175669A1 (en) * | 2001-05-25 | 2002-11-28 | Ziegner Bernhard Alphonso | Film-based microwave and millimeter-wave circuits and sensors |
| CN210923952U (zh) * | 2019-07-04 | 2020-07-03 | 宁波信泰机械有限公司 | 一种适用acc毫米波标牌的透波性能测试设备 |
| CN112902753A (zh) * | 2021-03-16 | 2021-06-04 | 安徽财纳伽善科技有限公司 | 一种防电子波伪装网 |
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| JP2961171B1 (ja) * | 1998-06-05 | 1999-10-12 | 防衛庁技術研究本部長 | 広帯域シンタクチックフォーム電波吸収材料 |
| US20020175669A1 (en) * | 2001-05-25 | 2002-11-28 | Ziegner Bernhard Alphonso | Film-based microwave and millimeter-wave circuits and sensors |
| CN210923952U (zh) * | 2019-07-04 | 2020-07-03 | 宁波信泰机械有限公司 | 一种适用acc毫米波标牌的透波性能测试设备 |
| CN112902753A (zh) * | 2021-03-16 | 2021-06-04 | 安徽财纳伽善科技有限公司 | 一种防电子波伪装网 |
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