CN114855442A - 一种电磁屏蔽用MXene基导电自清洁复合织物及其制备方法 - Google Patents
一种电磁屏蔽用MXene基导电自清洁复合织物及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种电磁屏蔽用MXene基导电自清洁复合织物及其制备方法。首先,利用浸涂MXene和碳纳米材料混合液的方式,在织物上构筑出基本导电性功能涂层。其次,采用原位溶胶‑凝胶法和涂覆工艺分别在导电织物上引入微纳粗糙结构和低表面能特性,赋予织物涂层以超疏水功能保护层。测试表明,该复合织物材料具有较高的电导率和电磁屏蔽性能,在最佳条件下其在X波段的电磁屏蔽效能值可高达58.4dB;同时复合导电织物特有的超疏水自清洁功能性赋予其优异的环境稳定性(如防水/防尘/防冰/防雨雪)和理想的力学/耐磨损/耐腐蚀稳定性能。因此,本发明所公开的多功能导电自清洁复合织物可应用于复杂苛刻环境下的高效电磁屏蔽和电磁波吸收等相关领域。
Description
技术领域
本发明属于电磁屏蔽技术领域,具体涉及一种导电自清洁复合织物的制备及其电磁屏蔽应用。
背景技术
近年来,随着电子行业的迅猛发展,手机、电脑、电视等各种电子产品已经成为了人们生活与工作中必不可少的一部分。这些电子产品为我们工作和生活带来便利的同时,产生的电磁波也产生了直接或间接的危害。电磁波污染已成为人类健康和精密电子器件正常工作的重要威胁。为了有效应对此问题,电磁干扰屏蔽材料的设计开发具有重要的现实意义。
作为一种典型的电磁屏蔽材料,电磁屏蔽织物因其柔韧性好、轻质、适用性强等诸多优点,可加工制作成个人电磁屏蔽服、医用屏蔽室材料、电磁屏蔽帐篷、电磁信号防护罩等形式,广泛应用于个人防护、医疗卫生、航空航天及国防军工等众多领域。此外,考虑到电磁屏蔽织物材料应用环境的复杂性,其在使用过程中难免会遇到恶劣环境(如雨水、结冰、沙尘、酸碱腐蚀性等条件),尤其是在户外全天候电子设备领域(如信号站、户外电磁装置等)的应用,这势必会影响电磁屏蔽织物的长期使用可靠性。众所周知,超疏水表面(接触角大于150°)通常可以赋予材料优异的防水、自清洁(除尘)、防冰、防腐蚀等众多优异功能。因此,开发和设计具有良好超疏水自清洁功能的电磁屏蔽织物对于高性能电磁屏蔽织物涂层的长效安全稳定应用具有重要意义及应用前景。
传统电磁屏蔽功能织物主要是基于金属导电材料与织物基底复合而得到。如Lu等人报道了一种利用超声辅助化学镀银的方法在聚酯表面修饰一层银层制备了一种电磁屏蔽用的银颗粒基复合导电织物,该复合织物在0.01MHz-18GHz频率范围内的电磁屏蔽效能为32dB(Lu Y.,Jiang S.,HuangY.,Surface&Coatings Technology,2010,204(16):2829-2833.)。显而易见的是,传统金属基导电织物存在以下明显问题:a)金属具有密度大、不易加工、影响织物柔韧性等弊端;b)金属基导电复合织物的力学稳定性较差,在受到摩擦、弯曲等外力作用时,其导电性和电磁屏蔽性能都会急剧下降;c)金属基导电复合织物暴露在潮湿、酸碱腐蚀性等恶劣环境时,金属材料非常容易氧化甚至腐蚀。上述这些缺点极大地限制了金属基导电复合织物材料的大规模实际应用。
相比于传统金属基导电材料,选择使用非金属类导电材料替换金属材料成为构筑新型高性能导电复合织物的重要思路之一。近年来,石墨烯及其氧化衍生物(氧化石墨烯,GO)作为一种具有优异导电性能和化学稳定性能的二维纳米材料,在电磁屏蔽领域展现出较高的潜在应用价值。如中国专利CN 201910666433.3报道了一种利用GO与苯胺单体构筑超疏水性电磁屏蔽织物的方法,具体步骤如下:首先利用静电自组装工艺,依次将GO构筑于阳离子棉织物表面;然后将苯胺单体分子吸附于织物纤维及GO表面,再通过氧化剂将苯胺单体聚合成聚苯胺(PANI),以此形成GO/PANI复合导电涂层;最后用浸渍法将乳化后的巴西棕榈蜡整理到织物上,形成超疏水复合功能织物。尽管如此,该棉织物的电磁屏蔽效能较差,只有21.62dB,虽然略高于商用屏蔽要求,却无法满足高性能电磁屏蔽的实际应用需求。此外,当前构筑超疏水自清洁导电织物涂层还普遍存在着工艺复杂,涂层导电性能不稳定等诸多问题。
值得庆幸的是,作为一种新型的2D纳米片层材料,过渡金属碳化物/氮化物(MXene)表现出优异类金属的高导电性与层状结构,且集成了轻质和抗腐蚀的显著性能,使得它成为一种公认有前景的电磁屏蔽候选材料(Wang,J.,et al.,Bioinspired,High-Strength,and Flexible MXene/Aramid Fiber for Electromagnetic InterferenceShielding Papers with Joule Heating Performance,ACS Nano,2022,16(4),6700–6711)。Wang等报道了一种将织物在聚吡咯/MXene导电油墨和防水油墨中依次浸染制备防水防寒防电磁干扰的多功能织物(Qi-Wei Wang,Multifunctional and Water-ResistantMXene-Decorated Polyester Textiles with Outstanding ElectromagneticInterference Shielding and Joule Heating Performances.Advanced FunctionalMaterials,2019,29,1806819)。然而该功能织物的接触角在140°左右,达不到超疏水自清洁效果;同时该多功能织物也未进行耐酸碱腐蚀性表征测试。此外,MXene本身具有的易氧化特性,通常使得MXene基功能材料在实际应用中发生氧化降解而损失材料的应用稳定性。
发明内容
鉴于上述现有技术的不足,本发明的目的在于提供一种MXene基导电自清洁复合织物,既能赋予织物材料优异的导电/电磁屏蔽特性,又具有稳定的超疏水自清洁(防水、防尘、防冰等)、力学性能、抗氧化性能、耐酸碱性能等综合特性。解决了现有技术中导电性低/电磁屏蔽性能差、力学性能差、不耐潮湿和酸碱腐蚀性环境等棘手问题。
为了实现上述目的,本发明采用以下技术方案:
一种电磁屏蔽用MXene基导电自清洁复合织物,包括多孔织物基底、MXene基导电功能层、粗糙微纳颗粒和硅橡胶复合层,MXene基导电功能层涂覆在多孔织物基底表面,MXene基导电功能层表面原位生长粗糙微纳颗粒,硅橡胶层覆盖在粗糙微纳颗粒上形成粗糙微纳颗粒和硅橡胶复合层。
所述MXene基导电功能层为MXene导电功能涂层,或MXene和碳纳米材料混合的导电功能涂层。
所述微纳颗粒为微纳尺寸的颗粒,如二氧化硅微纳颗粒、二氧化钛微纳颗粒。优选为二氧化硅微纳颗粒。二氧化硅微纳颗粒、二氧化钛微纳颗粒均可以采用其现有的制备方法直接在MXene基导电功能层上原位生长形成。
一种电磁屏蔽用MXene基导电自清洁复合织物的制备方法,具体步骤如下:
1)采用多次涂覆方式将MXene/碳纳米材料分散液或MXene分散液涂布到预处理多孔织物基底表面并干燥处理,在织物表面获得稳定MXene/碳纳米材料导电功能涂层或MXene导电功能涂层;
2)利用溶胶-凝胶法在导电功能涂层表面原位生成具有微纳分级结构的二氧化硅颗粒或二氧化钛颗粒;
3)将低表面能硅橡胶溶液涂覆到上述具有粗糙结构的导电涂层表面,随后硫化得到超疏水自清洁特性的多功能复合织物。
作为优选,所述步骤1)中多孔织物基底包括纯棉、锦纶、腈纶、涤纶及其混纺织物、无纺布等中的一种。织物预处理步骤为将待改性织物浸没于碱溶液(氢氧化钠,2-10mg/mL)中反应一段时间以清除织物表面的杂质与多余浆料,反应条件为50-80℃/1-4h。
所述步骤1)中,碳纳米材料的种类包括单壁碳纳米管、多壁碳纳米管、氧化石墨烯、石墨烯、炭黑等中的一种或几种;Ti3C2Tx MXene与碳纳米材料的混合液采用磁力搅拌(50-1000rpm/10-60min)与超声(40KHz/200W/10-50min)处理实现其均匀分散;MXene与碳纳米材料的质量比为10:0.5~10,混合水分散液的浓度为1-25mg/mL(优选浓度为10-20mg/mL)。
所述步骤2)中,涂覆方式为浸涂或喷涂工艺中的一种,其中浸涂工艺为:将预处理织物浸没于MXene/碳纳米材料均匀分散液中,浸渍时间为2-30min;随后取出在烘箱中干燥,干燥条件为常压烘箱40-80℃/30min-4h或真空烘箱30-70℃/30min-4h中的一种;干燥冷却到室温后,再重复上述浸涂-干燥步骤,浸涂循环次数为1-20次,优选次数为5-10次。喷涂工艺为:采用喷笔将上述MXene/碳纳米材料均匀分散液喷涂到预处理的织物表面,喷嘴口径为0.2-0.4mm,喷笔与织物距离为1-20cm,喷笔移动速率为1-5cm/s,喷笔采用单向喷涂方式;随后放置于烘箱中干燥,干燥条件同上述浸涂工艺;干燥冷却到室温后,再重复上述喷涂-干燥步骤,喷涂循环次数为1-20次,优选次数为5-10次。
所述步骤2)中溶胶-凝胶法合成的微纳米颗粒种类为二氧化硅,制备工艺为:将复合织物涂层在A液和B液中分别浸泡1~3h和10~50min后取出,放入30~90℃常压烘箱中水解缩合20~90min;A液为正硅酸乙酯(TEOS)和乙醇,两者体积比为1:0.5~2;B液为去离子水、氨水、乙醇,三者体积比为1:0.1~1:1~10。所得二氧化硅颗粒的尺寸为20nm-2500nm。
所述步骤3)中低表面能硅橡胶为加成型室温硫化硅橡胶(如乙烯基封端聚硅氧烷/氢封端聚硅氧烷/铂催化剂)或缩合型室温硫化硅橡胶(如羟基封端聚硅氧烷/正硅酸乙酯/有机锡催化剂)中的一种;硫化条件:0-80℃/2-48h。
所述方法制备的导电自清洁复合织物可应用于高效电磁屏蔽和电磁波吸收等相关领域。
与现有技术相比,本发明的优点在于:
1)本发明选择碳纳米材料和MXene作为导电涂层,赋予织物以优异的电导率和电磁屏蔽性能,其中电导率可达到26.9s/cm,电磁屏蔽效能可高达58.4dB;2)基于织物基体表面本身的微米级纤维孔结构,并引入纳米级/亚微米级的无机二氧化硅颗粒和低表面能聚硅氧烷的修饰作用,使得复合织物展现出优异的超疏水性(水接触角为153.0°)以及良好的自清洁性能;3)MXene本身易氧化,在潮湿环境中易分解,在MXene导电功能层上覆盖粗糙微纳颗粒和硅橡胶复合层,不但可在功能织物表面形成超疏水自清洁功能层,而且复合层作为屏蔽保护层可赋予织物以优异的防水、防尘、防雨雪、防冰、防酸碱腐蚀性能等(酸腐蚀测试显示,复合织物的电导率与电磁屏蔽效能只有轻微的下降),极大提升了复合织物在户外等极端条件下的高效应用稳定性;4)MXene/碳纳米材料与织物基底之间具有优异的结合力(主要基于氢键作用),同时受益于柔韧且强健的硅橡胶涂层,赋予功能织物以优异的力学稳定性,比如,经过长达100次的磨损和1000次的弯曲缠绕测试,功能织物的电磁屏蔽性能都能保持较好的稳定性;5)该制备方法工艺简单、涂层厚度可控、易于大规模化生产、维持织物本身较好的透气性与舒适性,特别适用于个人防护、国防军工、航空航天、医疗卫生等众多柔性电磁屏蔽领域。
附图说明
图1为实施例1中织物在MXene/多壁碳纳米管分散液中浸涂示意图。
图2为实施例1中织物浸涂干燥后的数码照片。
图3为实施例1中原始聚酯织物(a)和导电自清洁复合织物(b)的SEM图。
图4为实施例1中复合织物表面水接触角图。
图5为实施例1中复合织物表面的自清洁性能测试图。
图6为实施例1中复合织物的酸稳定性测试前后的EMI性能对比图。
具体实施方式
本发明提供一种电磁屏蔽用MXene基导电自清洁复合织物及其制备方法,为使本发明的目的、技术方案及效果更加清楚、明确,以下对本发明作进一步详细说明。应当解释,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
实施例1:
1)浸渍涂覆导电涂层
a)织物表面预处理
在浸渍涂覆之前,先采用碱液处理法对聚酯(PET)织物进行表面预处理,具体步骤如下:将一定尺寸的PET织物(2.5cm×2.5cm)浸入NaOH溶液中(10mg/mL)并在80℃下反应2h,随后取出用去离子水多次洗涤至中性,放入真空烘箱中(40℃)烘干待用。
b)织物浸涂改性
将Ti3C2TxMXene与多壁碳纳米管(MWCNT)的分散液共混以配制两者的均匀水性分散液(总浓度为15mg/mL,Ti3C2Tx与MWCNT质量比为5:2),混合处理条件为:磁力搅拌(600rpm/40min)和超声(40KHz/200W/40min)。将预处理聚酯织物浸没于MXene/MWCNT均匀分散液中5min(图1);随后取出在真空烘箱中(60℃/1h)干燥;干燥后冷却到室温,重复上述浸涂-干燥过程4次(共浸涂改性5次),得到MXene/MWCNT改性导电聚酯织物(图2)。
2)织物表面超疏水性构筑
基于上述导电织物,利用溶胶-凝胶法在导电功能涂层表面原位生成纳米二氧化硅颗粒,具体步骤如下:将复合织物涂层在A液和B液中分别浸泡1.5h和30min后取出,放入60℃常压烘箱中水解缩合40min;A液为正硅酸乙酯(TEOS)和乙醇,两者体积比为1:1;B液为去离子水、氨水、乙醇,三者体积比为1:0.4:5。所得二氧化硅颗粒的尺寸约100nm。
随后利用硅橡胶对所得复合织物进行进一步表面包覆改性,即将复合织物浸入加成型室温硫化硅橡胶前驱体溶液中(乙烯基封端聚硅氧烷/氢封端聚硅氧烷/铂催化剂体系,溶剂为正己烷,浓度为1wt%)20min,随后取出放入常压烘箱中(50℃)固化反应8h,硫化后即可得到目标的导电自清洁复合织物。空白聚酯织物与复合改性后的SEM对比如图3所示。
3)复合织物相关性能测试
所得导电自清洁复合织物的电导率为26.9s/cm;在X波段的电磁屏蔽效能数值为58.4dB。
该导电自清洁复合织物对水接触角可高达153°(图4)。同时该复合织物展现出优异的超疏水自清洁性能,如图5所示,本实施例中以白炭黑作为模拟污染物,将白炭黑置于复合织物表面,当用水滴不断冲击织物材料表面时,在液滴滚动下很容易将白炭黑污染物一起滚落脱离织物表面,从而实现了优异的抗污自清洁特性。
对该复合织物进行力学性能测试,分别采用50次磨损测试和弯曲缠绕测试(1000次),最后结果显示,该复合织物保持了较好的电导率与电磁屏蔽效能稳定性,表明其具有优异的力学稳定性。
同时,将复合织物织物酸性溶液(pH=1盐酸溶液)中浸没20h,如图6所示,酸性浸泡后,复合织物的电磁屏蔽效能值几乎未发生变化,证明该复合织物具有优异的耐酸腐蚀性。
实施例2:
本实施例中,导电涂层的制备方法与实施例1类似,不同的地方在于选用棉织物作为基底织物;采用MXene/SWCNT作为导电改性组分,两者质量比例为10:3,总浓度为10mg/mL(混合处理条件为磁力300rpm/30min,超声40KHz/200W/20min);浸涂次数为8次(干燥条件-常压80℃/30min);硅橡胶硫化反应条件为常压烘箱70℃/3h。本实施例制备的导电自清洁复合织物同样展现出理想的超疏水性(水接触角151.5°)、优异的电导率和电磁屏蔽性能、优异的力学稳定性和耐酸腐蚀性(如表1所示)。
实施例3:
本实施例中,导电涂层的制备方法与实施例1类似,不同的地方在于选用锦纶作为基底织物;MXene/GO(氧化石墨烯)作为导电改性组分,两者质量比例为10:1,总浓度为7mg/mL(混合处理条件为磁力100rpm/40min,超声40KHz/200W/30min);涂覆工艺为喷涂,喷嘴口径为0.3mm,喷笔与织物距离为5cm,喷笔移动速率为3cm/s,喷笔采用单向喷涂方式,干燥条件-真空70℃/30min,喷涂次数为7次;硅橡胶选用缩合型室温硫化硅橡胶(羟基封端聚硅氧烷/正硅酸乙酯/有机锡催化剂,正庚烷为溶剂,浓度为1wt%),硫化反应条件为常压烘箱60℃/4h。本实施例制备的导电自清洁复合织物展现出理想的超疏水性(水接触角150.8°)、优异的电导率和电磁屏蔽性能、优异的力学稳定性和耐酸腐蚀性(如表1所示)。
实施例4:
本实施例中,导电涂层的制备方法与实施例1类似,不同的地方在于选用棉织物作为基底织物;MXene/炭黑作为导电改性组分,两者质量比例为10:7,总浓度为12mg/mL(混合处理条件为磁力800rpm/50min,超声40KHz/200W/50min);涂覆工艺为喷涂,喷涂次数为14次,喷嘴口径为0.4mm,喷笔与织物距离为8cm,喷笔移动速率为2cm/s,喷笔采用单向喷涂方式,干燥条件-真空60℃/40min;硅橡胶选用缩合型室温硫化硅橡胶(羟基封端聚硅氧烷/正硅酸乙酯/有机锡催化剂,正己烷为溶剂,浓度为3wt%),硫化反应条件为室温15℃/24h。本实施例制备的导电自清洁复合织物展现出理想的超疏水性(水接触角151.3°)、优异的电导率和电磁屏蔽性能、优异的力学稳定性和耐酸腐蚀性(如表1所示)。
对比例1:
本对比例中,导电涂层的制备方法与实施例1完全相同,不同的地方在于:导电组分改性后,未进一步采用二氧化硅和硅橡胶包覆改性。
尽管本对比例中制备的导电织物具有较理想的电导率与电磁屏蔽效能(24.7s/cm;53.5dB),但是水接触角只有40°,无法实现超疏水自清洁性;同时该复合织物的力学性能较差,采用50次的磨损测试后,电导率和EMI分别显著下降到8s/cm与17dB;此外,没有超疏水硅橡胶层的保护作用,复合织物的耐酸性腐蚀性也较差(如表1所示)。总之,本对比例制备的导电织物表现出较差的综合力学性能及耐极端环境稳定性,不具备实际应用前景。
对比例2:
本对比例中,导电涂层的制备方法与实施例1完全相同,不同的地方在于:导电组分改性后,未引入纳米级二氧化硅颗粒即直接进行硅橡胶包覆改性。
如表1所示,本实施例制备的导电复合织物表现出较好的电导率与电磁屏蔽效能(23.9s/cm;49.7dB),然而水接触角只有125°,同样无法实现超疏水自清洁功能性,因此复合织物的防尘、防冰、防雨雪效果较差,长期实际应用稳定性不甚理想。
对比例3:
本对比例中,导电涂层的制备方法与实施例1完全相同,不同的地方在于:导电组分改性后,引入纳米级二氧化硅颗粒后未进行硅橡胶包覆改性。
如表1所示,本实施例制备的导电复合织物尽管表现出较好的电导率与电磁屏蔽效能(24.3s/cm;51.0dB),然而复合织物具有超亲水性(水接触角为0°),无法实现超疏水自清洁特性,难以满足实际户外环境的高效稳定应用。
对比例4:
本对比例中,导电涂层的制备方法与实施例1完全相同,不同的地方在于:
导电组分只采用单一的多壁碳纳米管。
如表1所示,本实施例制备的导电复合织物电导率与电磁屏蔽效能不甚理想(10.5s/cm;31.2dB),难以满足高效电磁屏蔽的应用需求。
表1.实施例与对比例相关性能总结
最后需要说明的是,以上优选实施例仅用于说明本发明的技术方案而非限制,尽管通过上述优选实施例已经对本发明进行了详细的描述,但本领域工作人员应当理解,可以在形式上和细节上对其作出各种各样的改变,而不偏离本发明权利要求书所限定的范围。
Claims (10)
1.一种电磁屏蔽用MXene基导电自清洁复合织物,其特征在于,包括多孔织物基底、MXene基导电功能层、粗糙微纳颗粒和硅橡胶复合层,MXene基导电功能层涂覆在多孔织物基底表面,MXene基导电功能层表面原位生长粗糙微纳颗粒,硅橡胶层覆盖在粗糙微纳颗粒上形成粗糙微纳颗粒和硅橡胶复合层。
2.根据权利要求1所述的电磁屏蔽用MXene基导电自清洁复合织物,其特征在于,所述MXene基导电功能层为MXene导电功能涂层,或MXene和碳纳米材料混合的导电功能涂层。
3.根据权利要求1所述的电磁屏蔽用MXene基导电自清洁复合织物,其特征在于,所述微纳颗粒为二氧化硅颗粒或二氧化钛颗粒。
4.一种电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,包括如下步骤:
1)采用多次涂覆方式将MXene/碳纳米材料分散液或MXene分散液涂布到预处理多孔织物基底表面并干燥处理,在织物表面获得稳定MXene/碳纳米材料导电功能涂层或MXene导电功能涂层;
2)利用溶胶-凝胶法在导电功能涂层表面原位生成具有微纳分级结构的二氧化硅颗粒或二氧化钛颗粒;
3)将低表面能硅橡胶溶液涂覆到上述具有粗糙结构的导电涂层表面,随后硫化得到超疏水自清洁特性的多功能复合织物。
5.根据权利要求4所述的电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,所述步骤1)中多孔织物基底包括纯棉、锦纶、腈纶、涤纶及其混纺织物、无纺布中的一种,织物预处理步骤为将待改性织物浸没于碱溶液中反应一段时间以清除织物表面的杂质与多余浆料,反应条件为50-80℃/1-4h。
6.根据权利要求4所述的电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,所述步骤1)中,碳纳米材料的种类包括单壁碳纳米管、多壁碳纳米管、氧化石墨烯、石墨烯、炭黑等中的一种或几种;MXene与碳纳米材料的混合液采用磁力搅拌与超声处理实现其均匀分散,磁力搅拌条件为50-1000rpm/10-60min,超声条件为40KHz/200W/10-50min;MXene与碳纳米材料的质量比为10:0.5~10,混合水分散液的浓度为1-25mg/mL。
7.根据权利要求6所述的电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,导电分散液的浓度为10-20mg/mL。
8.根据权利要求4所述的电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,所述步骤2)中,涂覆方式为浸涂和喷涂工艺中的一种,其中浸涂工艺为:将预处理织物浸没于MXene/碳纳米材料均匀分散液,浸渍时间为2-30min;随后取出在烘箱中干燥,干燥条件为常压烘箱40-80℃/30min-4h或真空烘箱30-70℃/30min-4h中的一种;干燥后冷却到室温,再重复上述浸涂-干燥步骤,浸涂循环次数为1-20次;
喷涂工艺为:采用喷笔将上述MXene/碳纳米材料均匀分散液喷涂到预处理的织物表面,喷嘴口径为0.2-0.4mm,喷笔与织物距离为1-20cm,喷笔移动速率为1-5cm/s,喷笔采用单向喷涂方式;随后放置于烘箱中干燥,干燥条件同上述浸涂工艺;干燥冷却到室温后,再重复上述喷涂-干燥步骤,喷涂循环次数为1-20次。
9.根据权利要求4所述的电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,所述步骤2)中溶胶-凝胶法合成的微纳米颗粒种类为二氧化硅,制备工艺为:将复合织物涂层在A液和B液中分别浸泡1~3h和10~50min后取出,放入30~90℃常压烘箱中水解缩合20~90min;A液为正硅酸乙酯和乙醇,两者体积比为1:0.5~2;B液为去离子水、氨水、乙醇,三者体积比为1:0.1~1:1~10。
10.根据权利要求4所述的电磁屏蔽用MXene基导电自清洁复合织物的制备方法,其特征在于,所述步骤3)中低表面能硅橡胶为加成型室温硫化硅橡胶或缩合型室温硫化硅橡胶中的一种;硫化条件:0-80℃/2-48h。
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