CN110370771A - 一种雷达隐身吸波材料成型工艺 - Google Patents

一种雷达隐身吸波材料成型工艺 Download PDF

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CN110370771A
CN110370771A CN201810318321.4A CN201810318321A CN110370771A CN 110370771 A CN110370771 A CN 110370771A CN 201810318321 A CN201810318321 A CN 201810318321A CN 110370771 A CN110370771 A CN 110370771A
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layer
electrician
absorbing material
aramid fiber
glass epoxy
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宋庆祥
张力存
曲学功
崔宏伟
张希飞
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Shandong Grad Group Co Ltd
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Abstract

本发明属于一种雷达隐身吸波材料成型工艺，特别涉及一种结构功能一体化的雷达隐身吸波材料，既能承载重量，也可制作成各种复杂形状的部件(大大减少材料的使用量)，又可以吸收入射的电磁波。它克服了涂覆型吸波材料的缺点，达到了高频带、低比重的要求，可有效的减轻结构整体重量。

Description

一种雷达隐身吸波材料成型工艺
技术领域
该发明属于复合材料技术领域，特别涉及一种蜂窝雷达吸波性能材料；
背景技术
目前用于隐身的吸波材料为涂覆型隐身材料。其特点是操作简单，易于调节，但局限是频带一般都比较窄，易脱落，密度大、比重高，不能满足雷达隐身材料的需要。本专利提供一种既能承载重量，也可制作成各种复杂形状的部件(大大减少材料的使用量)，又可以吸收入射的电磁波。它克服了涂覆型吸波材料的缺点，达到了高频带、低比重的要求，可有效的减轻结构整体重量，实现结构功能一体化；
发明内容
本发明的技术方案是：
一种雷达隐身吸波材料，其特征是从外往里依次包括：聚脲防护层(1)、第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)、第二层电工级环氧玻璃钢板(4)、铝板(5)各层之间粘接而成。
进一步的，所述聚脲防护层(1)厚度为0.9～1.1mm，第一层电工级环氧玻璃钢板(2) 厚度为0.5mm、芳纶蜂窝吸波板(3)厚度为8.5mm或4.0mm、第二层电工级环氧玻璃钢板(4) 厚度为0.5mm、铝板(5)厚度为0.5mm；
如上所述的一种雷达隐身吸波材料成型工艺，其特征是包括以下步骤：
A.将第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)、第二层电工级环氧玻璃钢板(4)、铝板(5)进行表面抛光处理；
B.按一定的顺序将第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)、第二层电工级环氧玻璃钢板(4)、铝板(5)逐层粘接成型为隐身板，选用粘接剂为E51；粘接在压力为 -0.095～-0.1MPa的真空压力下，同时加温80～90℃，保温保压时间为200min～300min进行；
C.裁剪：将成型后的隐身板按所需成型尺寸要求进行裁剪，并将裁剪后的隐身板外侧轮廓对应的所述芳纶蜂窝吸波板(3)进行掏边处理，掏边深度为3mm～7mm左右；
D.按一定间距在第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)设置玻璃钢柱安装孔，并在处所玻璃钢柱安装孔上密封粘接玻璃钢柱；
E.在所述芳纶蜂窝吸波板(3)掏边处进行密封处理；
F.将密封处理隐身板与需要雷达隐身的装置进行贴覆，并用铆钉穿过玻璃钢柱将所述装置固定；
G.在最外层进行所述聚脲防护层(1)喷涂。
进一步的，步骤D、E所述密封处理用封边泥子为：将环氧树脂JL220A、120目的玻璃微珠、400目白炭黑按重量份为100∶15∶25进行调配成混合粘合剂；再将所述混合粘合剂与环氧固化剂JL220B按140∶25重量份进行调配成所述封边泥子。
进一步的，步骤B所述E-51粘接剂为618环氧胶、650聚酰胺固化剂在40±5℃温度下预热30±5min后，按1∶1重量份混合。
进一步的，步骤B所述粘接在压力为-0.095～-0.1MPa的真空压力下，同时加温80～90℃，保温保压时间为240min进行。
进一步的，步骤G所述聚脲防护层采用SPUA-M200慢速聚脲材料，所述材料为双组份脂肪族聚脲材料，涂料由A组份和B组份组成。所述材料需与D-31底漆配套使用，以提高聚脲防护涂层的附着力。
本发明其有益效果在于：采用结构吸波材料作为吸波层，蜂窝夹心结构，其质量轻，力学性能好，并且具有良好的隔热保温性能。0.5mm电工级环氧电工级环氧玻璃钢板作为面板层，可有效保护吸波层，减少外界环境对吸波层性能的影响，同时具有很好的透波性，避免外界对吸波层吸波性能的影响，该电工级环氧玻璃钢板还能够很好的匹配芳纶蜂窝吸波板电性能特性，进而保障了隐身板对入射电磁波的衰减和吸收。其中铝板作为反射层，至于吸波层之后，可将透过吸波层的电磁波反射到吸波层内，从而被充分吸收。在隐身板四周采取封边方法，有效保护内部芯材，避免外界环境因素对芯材的侵蚀，封边所采用的树脂硬度适中，可满足后期安装打磨加工的需求。
吸波层作为结构功能具有良好的吸波性能，可根据需求选用不同厚度的芳纶蜂窝吸波板，确定最终厚度。另一方面，吸波层由电工级环氧玻璃钢板蒙皮覆盖，可抵御外界环境的侵蚀，使用寿命长，可靠性高；并且采用铆接与胶接的方式安装在相应的骨架上，安装过程简便快捷，对于后续的修补以及更换提供了便利条件。
综上所述，本发明提供一种具有良好吸波功能且使用寿命长，可靠性高、施工效率高的隐身板制备方法及其应用。
附图说明
图1为一种雷达隐身吸波材料结构示意。
图中：1聚脲防护层、2第一层电工级环氧玻璃钢板、3芳纶蜂窝吸波板、4第二层电工级环氧玻璃钢板、5铝板、6粘接剂、7玻璃钢柱、8沉头铆钉、9固定装置。
具体实施方式
以下实施例旨在进一步说明本发明内容，而不是限制本发明的保护范围。
1)、粘接面板抛光处理：第一层电工级环氧玻璃钢板0.5mm厚、芳纶蜂窝吸波板8.5mm 厚、第二层电工级环氧玻璃钢板0.5mm厚、铝板0.5mm厚，进行表面抛光处理；
2)、芳纶蜂窝吸波板烘干：加温室内40～50℃烘30±5min，去除芳纶蜂窝吸波板内水分。
3)、粘接剂调配：环氧胶618、650聚酰胺固化剂两者的混合比例为1∶1。配胶之前要在 40±5℃温度下预热30±5min左右，以降低树脂粘度。
4)、吸波层成型：从外往里的顺序，采用调配好的粘接剂，分别将8.5mm厚芳纶蜂窝吸波板与第一层电工级环氧玻璃钢板、第二层电工级环氧玻璃钢板粘接，经过-0.095～-0.1MPa 的真空压力，同时加温80～90℃，保温保压时间为240min成型；
5)、反射层成型：采用调配好的粘接剂，将铝板与成型好的第二层电工级环氧玻璃钢进行粘接，再经过-0.095～-0.1MPa的真空压力，同时加温80～90℃，保温保压时间为240min 成型；
6)、裁剪：将成型后的隐身板按设计尺寸要求进行裁剪。并将裁剪后的隐身板外轮廓芳纶蜂窝吸波板进行掏边处理，深度为5mm左右，约为3个蜂窝芯网格。以及据设计要求，配打φ10的玻璃钢柱孔(内孔φ4.2)；
7)、封边并粘接玻璃钢柱：将裁剪好的隐身板进行封边处理，在轻质隐身板掏边处填入封边泥子并抹平，同时在玻璃钢柱孔内填入封边泥子，并将玻璃钢柱放入，常温下固化10～ 20h，后用200目左右砂纸进行打磨，重复上述封边过程，直至封边严密即可；
8)、将隐身板与固定装置采用φ4*25的沉头铆钉，铆接固定；
9)、聚脲防护层喷涂：在隐身板最外侧表面，打磨处理，并进行表面修饰，合格后采用聚脲防护涂层采用SPUA-M200慢速聚脲材料并与D-31底漆配套使用，以提高聚脲防护涂层的附着力，喷涂(1.0±0.1)mm的涂层厚度的聚脲涂层；
本实施方案制备得到的轻质隐身板成型面的剥离强度不小于4N/cm，吸波性能见下表；

Claims (6)

1.一种雷达隐身吸波材料，其特征是从外往里依次包括：聚脲防护层、第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)、第二层电工级环氧玻璃钢板(4)、铝板(5)各层之间粘接而成。
2.如权利要求1所述一种雷达隐身吸波材料，其特征是：所述聚脲防护层厚度为0.9～1.1mm，第一层电工级环氧玻璃钢板(2)厚度为0.5mm、芳纶蜂窝吸波板(3)厚度为8.5mm或4.0mm、第二层电工级环氧玻璃钢板(4)厚度为0.5mm、铝板(5)厚度为0.5mm粘接而成。
3.如权利要求2所述的一种雷达隐身吸波材料的成型工艺，其特征是包括以下步骤：
A.将第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)、第二层电工级环氧玻璃钢板(4)、铝板(5)进行表面抛光处理；
B.按一定的顺序将第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)、第二层电工级环氧玻璃钢板(4)、铝板(5)逐层粘接成型为隐身板，选用粘接剂为E51；粘接在压力为-0.095～-0.1MPa的真空压力下，同时加温80～90℃，保温保压时间为200min～300min进行；
C.裁剪：将成型后的隐身板按所需成型尺寸要求进行裁剪，并将裁剪后的隐身板外侧轮廓对应的所述芳纶蜂窝吸波板(3)进行掏边处理，掏边深度为3mm～7mm左右；
D.按一定间距在第一层电工级环氧玻璃钢板(2)、芳纶蜂窝吸波板(3)设置玻璃钢柱安装孔，并在处所玻璃钢柱安装孔密封粘接玻璃钢柱；
E.在所述芳纶蜂窝吸波板(3)掏边处进行密封处理；
F.将密封处理隐身板与需要雷达隐身的装置进行贴覆，并用铆钉穿过玻璃钢柱将所述装置固定；
G.在最外层进行所这聚脲防护层喷涂。
4.如权利要求3所述的一种雷达隐身吸波材料的成型工艺，其特征是：步骤D、E所述密封处理用封边泥子为：将环氧树脂JL220A、120目的玻璃微珠、400目白炭黑按重量份为100∶15∶25进行调配成混合粘合剂；再将所述混合粘合剂与环氧固化剂JL220B按140∶25重量份进行调配成所述封边泥子。
5.如权利要求3所述的一种雷达隐身吸波材料的成型工艺，其特征是：步骤B所述E-51粘接剂为618环氧胶、650聚酰胺固化剂在40±5℃温度下预热30±5min后，按1∶1重量份混合。
6.如权利要求3所述的一种雷达隐身吸波材料的成型工艺，其特征是：步骤B所述粘接在压力为-0.095～-0.1MPa的真空压力下，同时加温80～90℃，保温保压时间为240min进行。
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