CN110819252A - 一种灯塔吸波材料 - Google Patents

一种灯塔吸波材料 Download PDF

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CN110819252A
CN110819252A CN201911174276.0A CN201911174276A CN110819252A CN 110819252 A CN110819252 A CN 110819252A CN 201911174276 A CN201911174276 A CN 201911174276A CN 110819252 A CN110819252 A CN 110819252A
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夏纲锋
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Abstract

本发明公开了一种灯塔吸波材料,具体涉及吸波材料技术领域,其吸波性能优异,吸收率大于‑10dB的频带宽度为7.8 GHz(4.5‑12.3 GHz),最大吸收值为‑31.6dB;其选择的面漆结合了丙烯酸和聚硅氧烷的双重特点,具有有机‑无机杂化结构,表现出优异的长效防腐耐候性能,又具有高固体含量、低黏度的特点,施工简便,VOC含量极低,符合新环保法规的要求。适用于海洋性气候。屏蔽层金属屏蔽网选取镀锡铜材质,屏蔽效能高,同时网状结构大大提高了材料的力学强度和表面附着力。结构胶选择硅酮密封胶,该结构胶与混凝土,橡胶有优异的结合能力,施工环境温度为‑10~40℃,有优异的耐环境性能和力学性能。

Description

一种灯塔吸波材料
技术领域
本发明属于吸波材料技术领域,尤其是一种灯塔吸波材料。
背景技术
所谓吸波材料,是指能够吸收衰减入射的电磁波,并将电磁能转换成热能或其它形式能量的一类功能材料,已在移动通信、卫星导航、探测雷达、消费电子、现代军用装备(飞机、军舰、导弹)等新型产业推广应用。
灯塔是位于海岸、港口或河道,用以指引船只方向的建筑物。应用于灯塔的吸波材料要根据其应用环境,要适应和抵抗风浪等恶劣的自然条件,以保持自身的稳定性和耐久性。
发明内容
针对上述问题,本发明旨在提供一种灯塔吸波材料及其制备方法。
本发明通过以下技术方案实现:
一种灯塔吸波材料,由四层功能性材料组成,从上到下分别为厚度为0.1-0.2mm的防海洋环境面漆,厚度为0.4-0.5mm吸波材料,厚度为0.1-0.2mm的屏蔽层,和厚度为0.2-0.3mm的结构胶,其中吸波材料为氯丁基橡胶吸波材料,海洋环境面漆为丙烯酸聚硅氧烷面漆,其固含量为40-42%,屏蔽层为金属屏蔽网,其材质为镀锡铜,结构胶为硅酮密封胶,
其中氯丁基橡胶吸波材料制备方法具体包括以下步骤:
(1)将以重量份计的10-12份碳化硼在球磨机中球磨至粒径为10-100μm,然后将其加入至无水乙醇中,在70-76℃下以60-65KHz的超声分散20-30min后过滤,在200-220℃下焙烧2-3h,冷却后加入到50-80份去离子水中,在40-46KHz条件下超声分散40-50min,向其中加入4-5份浓度为0.08-0.15mol/L的氯化钴溶液和6-8份0.10-0.16mol/L的氯化铁溶液,然后在200-300rpm下搅拌10-20min后,向其中加入浓度为0.05-0.08mol/L的氢氧化钠溶液,调节pH至10.8-11.2,继续搅拌50-70min,加,3-5份质量分数为30%的双氧水,然后将所得体系转入反应釜中,在155-162℃下水热合成13-15h,冷却,过滤,洗涤后,在50-60℃下烘干,球磨至粒径为200-500nm,得到铁氧体负载碳化硼复合物;其选择的面漆结合了丙烯酸和聚硅氧烷的双重特点, 具有有机- 无机杂化结构,表现出优异的长效防腐耐候性能,又具有高固体含量、低黏度的特点,施工简便,VOC 含量极低,符合新环保法规的要求。适用于海洋性气候。屏蔽层金属屏蔽网选取镀锡铜材质,屏蔽效能高,同时网状结构大大提高了材料的力学强度和表面附着力。结构胶选择硅酮密封胶,该结构胶与混凝土,橡胶有优异的结合能力,施工环境温度为-10~40℃,有优异的耐环境性能和力学性能。
(2)将10-12份步骤(1)所得物分散到50-60份无水乙醇中,然后向其中加入2-4份无水氯化钴、3-5份1-(3-丁烯基)-1H-[1,2,4]三氮唑,在300-400rpm下回流反应6-8h,然后冷却后过滤,无水乙醇洗涤,于40-45℃下烘干;利用氯化钴和氯化铁在水热条件下在碳化硼表面原位生成氧化钴氧化铁,得到铁氧体负载碳化硼复合物,具有较大的电磁波吸收性能,接着利用1-(3-丁烯基)-1H-[1,2,4]三氮唑和氯化钴对其进行处理,可以在其表面接枝双键、烷基基团,从而增大了铁氧体负载碳化硼复合物与橡胶基底的相容性和界面结合力,促进其均匀分散,从而显著增强了氯丁基橡胶吸波材料的吸波性能以及其力学性能;
(3)将80-100份氯丁橡胶胶乳加入开炼机上进行混炼25-35min,然后向其中加入10-12份步骤(2)所得物、2-4份硬脂酸、0.5-0.8份亚乙基硫脲,继续混炼20-30min后,下片,厚度为2-4mm。
灯塔吸波材料制备过程为:将屏蔽层金属网与氯丁基橡胶吸波材料叠放在一起,压片至所需厚度,在149-153℃下硫化2-3h,然后在其金属网面涂覆结构胶,氯丁基橡胶材料面涂覆防海洋环境面漆即可。
本发明的有益效果:本发明灯塔吸波材料的吸波性能优异,其吸收率大于-10dB的频带宽度为7.8 GHz (4.5-12.3 GHz),最大吸收值为-31.6dB;其选择的面漆结合了丙烯酸和聚硅氧烷的双重特点, 具有有机- 无机杂化结构,表现出优异的长效防腐耐候性能,又具有高固体含量、低黏度的特点,施工简便,VOC 含量极低,符合新环保法规的要求。适用于海洋性气候。屏蔽层金属屏蔽网选取镀锡铜材质,屏蔽效能高,同时网状结构大大提高了材料的力学强度和表面附着力。结构胶选择硅酮密封胶,该结构胶与混凝土,橡胶有优异的结合能力,施工环境温度为-10~40℃,有优异的耐环境性能和力学性能。本发明对吸波材料进行改性,首先利用氯化钴和氯化铁在水热条件下在碳化硼表面原位生成氧化钴氧化铁,得到铁氧体负载碳化硼复合物,具有较大的电磁波吸收性能,接着利用1-(3-丁烯基)-1H-[1,2,4]三氮唑和氯化钴对其进行处理,可以在其表面接枝双键、烷基基团,从而增大了铁氧体负载碳化硼复合物与橡胶基底的相容性和界面结合力,促进其均匀分散,从而显著增强了氯丁基橡胶吸波材料的吸波性能以及其力学性能。
附图说明
图1为产品结构示意图。
具体实施方式
下面用具体实施例说明本发明,但并不是对本发明的限制。
实施例1
一种灯塔吸波材料,由四层功能性材料组成,从上到下分别为厚度为0.15mm的防海洋环境面漆,厚度为0.45mm吸波材料,厚度为0.15mm的屏蔽层,和厚度为0.25mm的结构胶,其中吸波材料为氯丁基橡胶吸波材料,海洋环境面漆为丙烯酸聚硅氧烷面漆,其固含量为41%,屏蔽层为金属屏蔽网,其材质为镀锡铜,结构胶为硅酮密封胶;
其中氯丁基橡胶吸波材料制备方法具体包括以下步骤:
(1)将以重量份计的11份碳化硼在球磨机中球磨至粒径为10-100μm,然后将其加入至无水乙醇中,在73℃下以62KHz的超声分散25min后过滤,在210℃下焙烧3h,冷却后加入到70份去离子水中,在43KHz条件下超声分散45min,向其中加入5份浓度为0.10mol/L的氯化钴溶液和7份0.13mol/L的氯化铁溶液,然后在240rpm下搅拌15min后,向其中加入浓度为0.06mol/L的氢氧化钠溶液,调节pH至10.9,继续搅拌60min,加入4份质量分数为30%的双氧水,然后将所得体系转入反应釜中,在160℃下水热合成14h,冷却,过滤,洗涤后,在55℃下烘干,球磨至粒径为200-500nm,得到铁氧体负载碳化硼复合物;
(2)将11份步骤(1)所得物分散到55份无水乙醇中,然后向其中加入3份无水氯化钴、4份1-(3-丁烯基)-1H-[1,2,4]三氮唑,在350rpm下回流反应7h,然后冷却后过滤,无水乙醇洗涤,于43℃下烘干;
(3)将90份氯丁橡胶胶乳加入开炼机上进行混炼30min,然后向其中加入11份步骤(2)所得物、3份硬脂酸、0.6份亚乙基硫脲,继续混炼25min后,下片,厚度为3mm。
灯塔吸波材料制备过程为:将屏蔽层金属网与氯丁基橡胶吸波材料叠放在一起,压片至所需厚度,在150℃下硫化3h,然后在其金属网面涂覆结构胶,氯丁基橡胶材料面涂覆防海洋环境面漆即可。
经测试,该样品吸收率大于-10dB的频带宽度为7.8 GHz (4.5-12.3 GHz),最大吸收值为-31.6dB,最大吸收值对应的频率为7.6 GHz。
实施例2
一种灯塔吸波材料,由四层功能性材料组成,从上到下分别为厚度为0.15mm的防海洋环境面漆,厚度为0.45mm吸波材料,厚度为0.15mm的屏蔽层,和厚度为0.25mm的结构胶,其中吸波材料为氯丁基橡胶吸波材料,海洋环境面漆为丙烯酸聚硅氧烷面漆,其固含量为41%,屏蔽层为金属屏蔽网,其材质为镀锡铜,结构胶为硅酮密封胶;
其中氯丁基橡胶吸波材料制备方法具体包括以下步骤:
(1)将以重量份计的11份碳化硼在球磨机中球磨至粒径为10-100μm,然后将其加入至无水乙醇中,在73℃下以62KHz的超声分散25min后过滤,在210℃下焙烧3h,冷却;
(2)将11份步骤(1)所得碳化硼分散到55份无水乙醇中,然后向其中加入3份无水氯化钴、4份1-(3-丁烯基)-1H-[1,2,4]三氮唑,在350rpm下回流反应7h,然后冷却后过滤,无水乙醇洗涤,于43℃下烘干;
(3)将90份氯丁橡胶胶乳加入开炼机上进行混炼30min,然后向其中加入11份步骤(2)所得物、3份硬脂酸、0.6份亚乙基硫脲,继续混炼25min后,下片,厚度为3mm。
灯塔吸波材料制备过程为:将屏蔽层金属网与氯丁基橡胶吸波材料叠放在一起,压片至所需厚度,在150℃下硫化3h,然后在其金属网面涂覆结构胶,氯丁基橡胶材料面涂覆防海洋环境面漆即可。
经测试,该样品吸收率大于-10dB的频带宽度为5.4 GHz (5.5-10.9 GHz),最大吸收值为-18.1dB,最大吸收值对应的频率为5.9 GHz。
实施例3
一种灯塔吸波材料,由四层功能性材料组成,从上到下分别为厚度为0.15mm的防海洋环境面漆,厚度为0.45mm吸波材料,厚度为0.15mm的屏蔽层,和厚度为0.25mm的结构胶,其中吸波材料为氯丁基橡胶吸波材料,海洋环境面漆为丙烯酸聚硅氧烷面漆,其固含量为41%,屏蔽层为金属屏蔽网,其材质为镀锡铜,结构胶为硅酮密封胶;
其中氯丁基橡胶吸波材料制备方法具体包括以下步骤:
(1)将以重量份计的11份碳化硼在球磨机中球磨至粒径为10-100μm,然后将其加入至无水乙醇中,在73℃下以62KHz的超声分散25min后过滤,在210℃下焙烧3h,冷却后加入到70份去离子水中,在43KHz条件下超声分散45min,向其中加入5份浓度为0.10mol/L的氯化钴溶液和7份0.13mol/L的氯化铁溶液,然后在240rpm下搅拌15min后,向其中加入浓度为0.06mol/L的氢氧化钠溶液,调节pH至10.9,继续搅拌60min,加入4份质量分数为30%的双氧水,然后将所得体系转入反应釜中,在160℃下水热合成14h,冷却,过滤,洗涤后,在55℃下烘干,球磨至粒径为200-500nm,得到铁氧体负载碳化硼复合物;
(2)将90份氯丁橡胶胶乳加入开炼机上进行混炼30min,然后向其中加入11份步骤(1)所得物、3份硬脂酸、0.6份亚乙基硫脲,继续混炼25min后,下片,厚度为3mm。
灯塔吸波材料制备过程为:将屏蔽层金属网与氯丁基橡胶吸波材料叠放在一起,压片至所需厚度,在150℃下硫化3h,然后在其金属网面涂覆结构胶,氯丁基橡胶材料面涂覆防海洋环境面漆即可。
性能测试:采用 “金属基底吸波材料反射率计算软件”是基于传输线理论设计的软件模拟计算各组所得材料对电磁波的损耗。并计算各样品吸收率大于-10dB的频带宽度、最大吸收值及最大吸收值对应的频率。每组平行试验5组,取平均值。
经测试,该样品吸收率大于-10dB的频带宽度为7.2 GHz (4.8-12.0 GHz),最大吸收值为-24.5dB,最大吸收值对应的频率为6.3 GHz。

Claims (5)

1.一种灯塔吸波材料,其特征在于,由四层功能性材料组成,从上到下分别为厚度为0.1-0.2mm的防海洋环境面漆,厚度为0.4-0.5mm吸波材料,厚度为0.1-0.2mm的屏蔽层,和厚度为0.2-0.3mm的结构胶,其中吸波材料为氯丁基橡胶吸波材料,其制备方法具体包括以下步骤:
(1)将以重量份计的10-12份碳化硼在球磨机中球磨至粒径为10-100μm,然后将其加入至无水乙醇中,在70-76℃下以60-65KHz的超声分散20-30min后过滤,在200-220℃下焙烧2-3h,冷却后加入到50-80份去离子水中,在40-46KHz条件下超声分散40-50min,向其中加入4-5份浓度为0.08-0.15mol/L的氯化钴溶液和6-8份0.10-0.16mol/L的氯化铁溶液,然后在200-300rpm下搅拌10-20min后,向其中加入浓度为0.05-0.08mol/L的氢氧化钠溶液,调节pH至10.8-11.2,继续搅拌50-70min,加,3-5份质量分数为30%的双氧水,然后将所得体系转入反应釜中,在155-162℃下水热合成13-15h,冷却,过滤,洗涤后,在50-60℃下烘干,球磨至粒径为200-500nm,得到铁氧体负载碳化硼复合物;
(2)将10-12份步骤(1)所得物分散到50-60份无水乙醇中,然后向其中加入2-4份无水氯化钴、3-5份1-(3-丁烯基)-1H-[1,2,4]三氮唑,在300-400rpm下回流反应6-8h,然后冷却后过滤,无水乙醇洗涤,于40-45℃下烘干;
(3)将80-100份氯丁橡胶胶乳加入开炼机上进行混炼25-35min,然后向其中加入10-12份步骤(2)所得物、2-4份硬脂酸、0.5-0.8份亚乙基硫脲,继续混炼20-30min后,下片,厚度为2-4mm。
2.根据权利要求1所述的一种灯塔吸波材料,其特征在于,所述防海洋环境面漆为丙烯酸聚硅氧烷面漆,其固含量为40-42%。
3.根据权利要求1所述的一种灯塔吸波材料,其特征在于,所述屏蔽层为金属屏蔽网,其材质为镀锡铜。
4.根据权利要求1所述的一种灯塔吸波材料,其特征在于,所述结构胶为硅酮密封胶。
5.根据权利要求1所述的一种灯塔吸波材料,其特征在于,其制备过程为:将屏蔽层金属网与氯丁基橡胶吸波材料叠放在一起,压片至所需厚度,在149-153℃下硫化2-3h,然后在其金属网面涂覆结构胶,氯丁基橡胶材料面涂覆防海洋环境面漆即可。
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113667417A (zh) * 2021-09-01 2021-11-19 深圳市高仁电子新材料有限公司 一种防电磁波辐射的光学胶及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113667417A (zh) * 2021-09-01 2021-11-19 深圳市高仁电子新材料有限公司 一种防电磁波辐射的光学胶及其制备方法
CN113667417B (zh) * 2021-09-01 2022-06-03 深圳市高仁电子新材料有限公司 一种防电磁波辐射的光学胶及其制备方法

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