CN112406221A - 一种电磁屏蔽、耐温循柔性复合防热套管及其制备方法 - Google Patents

一种电磁屏蔽、耐温循柔性复合防热套管及其制备方法 Download PDF

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CN112406221A
CN112406221A CN202011380114.5A CN202011380114A CN112406221A CN 112406221 A CN112406221 A CN 112406221A CN 202011380114 A CN202011380114 A CN 202011380114A CN 112406221 A CN112406221 A CN 112406221A
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coating
heat
layer
sleeve
temperature
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黄明国
廖禹平
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Hunan Xingxin Aetrospece New Material Co ltd
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Hunan Xingxin Aetrospece New Material Co ltd
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    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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Abstract

本发明提供了一种电磁屏蔽、耐温循柔性复合防热套管，该套管由内到外分为八层，第一层由硅橡胶管作为骨架材料；第二层为混纺编织层，由芳纶丝和不锈钢金属捻线组成；第三层为玻璃纤维编织管；第四层为低导热涂料层；第五层为相变储能涂料层；第六层为柔性特种防隔热涂料层；第七层为快速导热硅胶层；第八层为镀铝层。本发明同时提供了上述套管的制作方法。这种套管具有电磁屏蔽、耐温循、柔软、防热等特性。

Description

一种电磁屏蔽、耐温循柔性复合防热套管及其制备方法
技术领域
本发明涉及一种航天用仪器、仪表、电连接器、设备的热防护材料，具体涉及一种对飞行器上的电缆、芯线进行保护的具备电磁屏蔽、耐温循、柔性复合防热套管。
背景技术
根据飞行器某型号要求，研发一种具备电磁屏蔽并保护电缆、芯线用的防热套管，要求该套管在128kW/m2热流条件下，保持69秒内管内电缆、芯线外表面温升不高于82℃，且在高温高湿、低温环境下循环30次后，涂层表面不开裂且防热性能无影响。温循要求如下：
Figure 154324DEST_PATH_IMAGE001
发明内容
本发明要解决的技术问题是提供一种电磁屏蔽、耐温循柔性复合防热套管。
为解决上述技术问题，本发明关于电磁屏蔽、耐温循柔性复合防热套管的技术方案是：一种电磁屏蔽、耐温循柔性复合防热套管，该套管由内到外分为八层，第一层由硅橡胶管作为骨架材料；第二层为混纺编织层，由芳纶丝和不锈钢捻线组成；第三层为玻璃纤维编织管；第四层为低导热涂料层；第五层为相变储能涂料层；第六层为柔性特种防隔热涂料层；第七层为快速导热硅胶层；第八层为镀铝层。
优选地，所述镀铝层的厚度为0.04um～0.08um。
更优选地，所述芳纶丝为规格为200D、捻度为180的1414灰色芳纶丝，所述不锈钢捻线为12um的不锈钢玻璃纤维捻线。
本发明关于上述电磁屏蔽、耐温循柔性复合防热套管的制作方法包括以下工艺步骤：
a、将硅橡胶管两头用塞子塞住，扎丝扎紧，并充好气，充圆为止；
b、将2股芳纶丝与1股不锈钢捻线合股，装入高速编织机中；
c、在硅橡胶管外部编织一层混纺的芳纶丝、不锈钢捻线编织层；
d、外层再编织一层0.15mm玻璃纤维层，制成复合套管；
e、将配制好的低导热涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.2mm；
f、将反复浸涂后的复合套管进行烘烤固化；
g、将配制好的相变储能涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.3mm；
h、将反复浸涂后的复合套管进行烘烤固化；
i、将配制好的柔性特种防隔热涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.6mm；
j、将反复浸涂后的复合套管进行烘烤固化；
k、将配制好的快速导热硅胶过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.3mm；
l、将反复浸涂后的复合套管进行烘烤固化；
m、将经烘烤固化后的覆盖涂层的复合套管置于真空蒸发镀膜机内，抽真空；
n、当真空度达到1.0×10～2pa～1.0×10～4pa后，开启真空蒸发卷绕镀膜，镀膜靶材采用纯度为99.5%的铝锭，镀铝厚度达到0.04um～0.08um后停止镀膜。
优选地，步骤5、7、9、11中浸涂低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶的方法为：将过滤后的低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶加入立式上胶机的浸渍槽中，开启电调速表，控制转速在150～260r/min，复合套管在立式上胶机上循环一圈为35～50 min；每浸涂一遍后将油槽中的剩余的低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶放出，并清洗油槽，同时用细砂纸将套管打磨一遍，使套管表面光滑，无明显的流痕再用洁净的无尘布擦拭表面多余物后方可进行第二遍的浸涂；第二遍的浸涂重复前述步骤。
更优选地，步骤e、g、i、k中每一遍浸涂低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶的厚度增加控制在0.02～0.04mm。
更优选地，步骤e中复合套管每浸涂一次低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶，需要进行一次升温固化，固化的温度控制在100～120℃。
更优选地，制备低导热涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比70：(2～5)比例投入混合设备搅匀，即得A涂料；其次，将B组份液体硅胶、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比70：(2～5)比例投入混合设备搅匀，即得B涂料；然后，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将A涂料、B涂料按质量比1：1比例投入混合设备搅匀，然后加入与A涂料或B涂料相同质量的混合溶剂，继续搅拌至均相，即得低导热涂料。
更优选地，制备相变储能涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、相变温度为185℃的有机固～固相变材料按质量比（20～40）：（10～30）比例投入混合设备搅匀，即得C涂料；其次，将B组份液体硅胶、相变温度为185℃的有机固～固相变材料按质量比（20～40）：（10～30）比例投入混合设备搅匀，即得D涂料；然后，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将C涂料、D涂料按质量比1：1比例投入混合设备搅匀，然后加入与C涂料或D涂料相同质量的混合溶剂，继续搅拌至均相，即得相变储能涂料。
更优选地，镀膜前的整个工艺步骤在温度为15～35℃、相对湿度不大于75%的环境下进行。
本发明的电磁屏蔽、耐温循柔性复合防热套管，通过硅橡胶管作为内衬骨架，使该套管保持柔软性；通过混纺芳纶丝和不锈钢捻线提高强度和防屏蔽效果；通过玻璃纤维编织管作为过渡层；通过低导热涂层来实现阻缓热量传递；通过相变储能层实现蓄热；通过柔性特种防隔热涂料层实现阻燃和防止烧蚀性烧穿以阻缓热量传递；通过快速导热硅胶层实现快速传热，避免热量聚集；通过镀铝层来实现光子反射,增强反辐射效果，还能通过镀铝来实现电磁屏蔽效果，同时起到隔绝效果，防止湿气进入。并且，该套管通过本发明的制作工艺加工，能够让该套管具有电磁屏蔽、耐温循、防热的功能，可以满足套管在128kW/m2热流条件下，保持69秒内管内电缆、芯线外表面温升不高于82℃，且在高温高湿、低温环境下循环30次后，涂层表面不开裂且防热性能无影响，而且具备柔软性。
附图说明
图1为本发明实施例中的结构示意图。
图中：
1——第一层 2——第二层 3——第三层
4——第四层 5——第五层 6——第六层
7——第七层 8——第八层。
具体实施方式
实施例1
如图1所示，本发明关于电磁屏蔽、耐温循柔性复合防热套管的优选实施例是：一种电磁屏蔽、耐温循柔性复合防热套管，该套管由内到外分为八层，第一层1由硅橡胶管作为骨架材料；第二层2为混纺编织层，由芳纶丝和不锈钢捻线组成；第三层3为玻璃纤维编织管；第四层4为低导热涂料层；第五层5为相变储能涂料层；第六层6为柔性特种防隔热涂料层；第七层7为快速导热硅胶层；第八层8为镀铝层。其中，镀铝层的厚度为0.04um；芳纶丝可以是规格为200D、捻度为180的1414灰色芳纶丝，不锈钢捻线可以是12um的不锈钢玻璃纤维捻线。
本实施例关于上述电磁屏蔽、耐温循柔性复合防热套管的制作方法包括以下工艺步骤：
a、将硅橡胶管两头用塞子塞住，扎丝扎紧，并充好气，充圆为止；
b、将2股规格为200D、捻度为180的1414灰色芳纶丝与1股12um的不锈钢玻璃纤维捻线合股，装入高速编织机中；
c、在硅橡胶管外部编织一层混纺的芳纶丝、不锈钢捻线编织层；
d、外层再编织一层0.15mm玻璃纤维层，制成复合套管；
e、将配制好的低导热涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.2mm；
f、将反复浸涂后的复合套管进行烘烤固化；
g、将配制好的相变储能涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.3mm；
h、将反复浸涂后的复合套管进行烘烤固化；
i、将配制好的柔性特种防隔热涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.6mm；
j、将反复浸涂后的复合套管进行烘烤固化；
k、将配制好的快速导热硅胶过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.3mm；
l、将反复浸涂后的复合套管进行烘烤固化；
m、将经烘烤固化后的覆盖涂层的复合套管置于真空蒸发镀膜机内，抽真空；
n、当真空度达到1.0×10～2pa～1.0×10～4pa后，开启真空蒸发卷绕镀膜，镀膜靶材采用纯度为99.5%的铝锭，镀铝厚度达到0.04um后停止镀膜。
作为优选地，步骤e、g、i、k中浸涂低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶的方法为：将过滤后的低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶加入立式上胶机的浸渍槽中，开启电调速表，控制转速在150～260r/min，复合套管在立式上胶机上循环一圈为35～50 min；每浸涂一遍后将油槽中的剩余的低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶放出，并清洗油槽，同时用细砂纸将套管打磨一遍，使套管表面光滑，无明显的流痕再用洁净的无尘布擦拭表面多余物后方可进行第二遍的浸涂；第二遍的浸涂重复前述步骤。
作为优选地，步骤e、g、i、k中每一遍浸涂低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶的厚度增加控制在0.02～0.04mm。
作为优选地，步骤e中复合套管每浸涂一次低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶，需要进行一次升温固化，固化的温度控制在100～120℃。
作为优选地，制备低导热涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比70:2比例投入混合设备搅匀，即得A涂料；其次，将B组份液体硅胶、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比70:2比例投入混合设备搅匀，即得B涂料；然后，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将A涂料、B涂料按质量比1：1比例投入混合设备搅匀，然后加入与A涂料或B涂料相同质量的混合溶剂，继续搅拌至均相，即得低导热涂料。
作为优选地，制备相变储能涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、相变温度为185℃的有机固～固相变材料按质量比20：10比例投入混合设备搅匀，即得C涂料；其次，将B组份液体硅胶、相变温度为185℃的有机固～固相变材料按质量比20：10比例投入混合设备搅匀，即得D涂料；然后，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将C涂料、D涂料按质量比1：1比例投入混合设备搅匀，然后加入与C涂料或D涂料相同质量的混合溶剂，继续搅拌至均相，即得相变储能涂料。
作为优选地，镀膜前的整个工艺步骤在温度为15～35℃、相对湿度不大于75%的环境下进行。
其中，制备柔性特种防隔热涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、硅胶阻燃剂、AR级的硼酸锌、AR级氢氧化铝、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比(36～42:10～15:3～6:3～6:0.1～0.2)的比例投入混合设备搅匀，即得E涂料；其次，将B组份液体硅胶、硅胶阻燃剂、AR级的硼酸锌、AR级氢氧化铝、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比(36～42:10～15:3～6:3～6:0.1～0.2)的比例投入混合设备搅匀，即得F涂料；然后，将AR级二甲苯、环己酮按质量比1：1混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将E涂料、F涂料按质量比1：1比例投入混合设备搅匀，然后加入与E涂料或F涂料相同质量的混合溶剂，继续搅拌至均相，即得柔性特种防隔热涂料。
其中，制备快速导热硅胶的方法为：首先，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂；其次，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将100份A组份液体硅胶、30～35份AR级氧化铝、15～25份AR级氢氧化镁、5～10份氮化硼、10～15份混合溶剂混合均匀后置于研磨机内研磨，涂料细度达到25um后停止研磨，即得G涂料；然后，将100份B组份液体硅胶、30～35份AR级氧化铝、15～25份AR级氢氧化镁、5～10份氮化硼、10～15份混合溶剂混合均匀后置于研磨机内研磨，当涂料细度达到25um以下后停止研磨，即得H涂料；最后，将G涂料、H涂料按质量比1：1比例投入混合设备搅匀，接着加入与G涂料或H涂料相同质量的混合溶剂，继续搅拌至均相，即得快速导热硅胶。
实施例2
与实施例1相比，区别在于：第三层3镀铝层的厚度为0.06um；制备防热套管的方法中，步骤14中镀铝厚度达到0.06um后停止镀膜；制备低导热涂料的方法中，A组份液体硅胶与粒径为2nm～20nm的二氧化硅气凝胶粉的质量比比例为70:3，B组份液体硅胶与粒径为2nm～20nm的二氧化硅气凝胶粉的质量比比例为70:3；制备相变储能涂料的方法中，A组份液体硅胶与相变温度为185℃的有机固～固相变材料的质量比为30：20，B组份液体硅胶与相变温度为185℃的有机固～固相变材料的质量比为30：20。
实施例3
与实施例1相比，区别在于：第三层3镀铝层的厚度为0.08um；制备防热套管的方法中，步骤14中镀铝厚度达到0.08um后停止镀膜；制备低导热涂料的方法中，A组份液体硅胶与粒径为2nm～20nm的二氧化硅气凝胶粉的质量比比例为70:5，B组份液体硅胶与粒径为2nm～20nm的二氧化硅气凝胶粉的质量比比例为70:5；制备相变储能涂料的方法中，A组份液体硅胶与相变温度为185℃的有机固～固相变材料的质量比为40：30，B组份液体硅胶与相变温度为185℃的有机固～固相变材料的质量比为40：30。
上述所有实施例的电磁屏蔽、耐温循柔性复合防热套管，通过硅橡胶管作为内衬骨架，使该套管保持柔软性；通过混纺芳纶丝和不锈钢捻线提高强度和防屏蔽效果；通过玻璃纤维编织管作为过渡层；通过低导热涂层来实现阻缓热量传递；通过相变储能层实现蓄热；通过柔性特种防隔热涂料层实现阻燃和防止烧蚀性烧穿以阻缓热量传递；通过快速导热硅胶层实现快速传热，避免热量聚集；通过镀铝层来实现光子反射,增强反辐射效果，还能通过镀铝来实现电磁屏蔽效果，同时起到隔绝效果，防止湿气进入。并且，该套管通过本发明的制作工艺加工，能够让该套管具有电磁屏蔽、耐温循、防热的功能，可以满足套管在128kW/m2热流条件下，保持69秒内管内电缆、芯线外表面温升不高于82℃，且在高温高湿、低温环境下循环30次后，涂层表面不开裂且防热性能无影响，而且具备柔软性。
上述实施例为本发明较佳的实现方案，除此之外，本发明还可以其它方式实现，在不脱离本技术方案构思的前提下任何显而易见的替换均在本发明的保护范围之内。
为了让本领域普通技术人员更方便地理解本发明相对于现有技术的改进之处，本发明的一些附图和描述已经被简化，并且为了清楚起见，本申请文件还省略了一些其它元素，本领域普通技术人员应该意识到这些省略的元素也可构成本发明的内容。

Claims (10)

1.一种电磁屏蔽、耐温循柔性复合防热套管，其特征在于：该套管由内到外分为八层，第一层由硅橡胶管作为骨架材料；第二层为混纺编织层，由芳纶丝和不锈钢捻线组成；第三层为玻璃纤维编织管；第四层为低导热涂料层；第五层为相变储能涂料层；第六层为柔性特种防隔热涂料层；第七层为快速导热硅胶层；第八层为镀铝层。
2.根据权利要求1所述的电磁屏蔽、耐温循柔性复合防热套管，其特征在于：所述镀铝层的厚度为0.04um～0.08um。
3.根据权利要求1所述的电磁屏蔽、耐温循柔性复合防热套管，其特征在于：所述芳纶丝为规格为200D、捻度为180的1414灰色芳纶丝，所述不锈钢捻线为12um的不锈钢玻璃纤维捻线。
4.制备权利要求1至3中任意一项所述的电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：包括以下工艺步骤：
a、将硅橡胶管两头用塞子塞住，扎丝扎紧，并充好气，充圆为止；
b、将2股芳纶丝与1股不锈钢捻线合股，装入高速编织机中；
c、在硅橡胶管外部编织一层混纺的芳纶丝、不锈钢捻线编织层；
d、外层再编织一层0.15mm玻璃纤维层，制成复合套管；
e、将配制好的低导热涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.2mm；
f、将反复浸涂后的复合套管进行烘烤固化；
g、将配制好的相变储能涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.3mm；
h、将反复浸涂后的复合套管进行烘烤固化；
i、将配制好的柔性特种防隔热涂料过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.6mm；
j、将反复浸涂后的复合套管进行烘烤固化；
k、将配制好的快速导热硅胶过滤后倒入立式上胶机浸渍槽中，再将复合套管放入其中反复浸涂直至涂层厚度达到0.3mm；
l、将反复浸涂后的复合套管进行烘烤固化；
m、将经烘烤固化后的覆盖涂层的复合套管置于真空蒸发镀膜机内，抽真空；
n、当真空度达到1.0×10～2pa～1.0×10～4pa后，开启真空蒸发卷绕镀膜，镀膜靶材采用纯度为99.5%的铝锭，镀铝厚度达到0.04um～0.08um后停止镀膜。
5.根据权利要求4所述的制备电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：步骤e、g、i、k中浸涂低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶的方法为：将过滤后的低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶加入立式上胶机的浸渍槽中，开启电调速表，控制转速在150～260r/min，复合套管在立式上胶机上循环一圈为35～50 min；每浸涂一遍后将油槽中的剩余的低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶放出，并清洗油槽，同时用细砂纸将套管打磨一遍，使套管表面光滑，无明显的流痕再用洁净的无尘布擦拭表面多余物后方可进行第二遍的浸涂；第二遍的浸涂重复前述步骤。
6.根据权利要求4所述的制备电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：步骤e、g、i、k中每一遍浸涂低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶的厚度增加控制在0.02～0.04mm。
7.根据权利要求4所述的制备电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：步骤e中复合套管每浸涂一次低导热涂料/相变储能涂料/柔性特种防隔热涂料/快速导热硅胶，需要进行一次升温固化，固化的温度控制在100～120℃。
8.根据权利要求4所述的制备电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：制备低导热涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比70：(2～5)比例投入混合设备搅匀，即得A涂料；其次，将B组份液体硅胶、粒径为2nm～20nm的二氧化硅气凝胶粉按质量比70：(2～5)比例投入混合设备搅匀，即得B涂料；然后，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将A涂料、B涂料按质量比1：1比例投入混合设备搅匀，然后加入与A涂料或B涂料相同质量的混合溶剂，继续搅拌至均相，即得低导热涂料。
9.根据权利要求4所述的制备电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：制备相变储能涂料的方法为：首先，取由A、B两组份可流动性的液体硅胶组成的加成型液体硅橡胶，将A组份液体硅胶、相变温度为185℃的有机固～固相变材料按质量比（20～40）：（10～30）比例投入混合设备搅匀，即得C涂料；其次，将B组份液体硅胶、相变温度为185℃的有机固～固相变材料按质量比（20～40）：（10～30）比例投入混合设备搅匀，即得D涂料；然后，将AR级二甲苯、环己酮按质量比1：1进行混合，形成混合溶剂，制成的混合溶剂用于稀释涂料，调节粘度；最后，将C涂料、D涂料按质量比1：1比例投入混合设备搅匀，然后加入与C涂料或D涂料相同质量的混合溶剂，继续搅拌至均相，即得相变储能涂料。
10.根据权利要求4所述的制备电磁屏蔽、耐温循柔性复合防热套管的方法，其特征在于：镀膜前的整个工艺步骤在温度为15～35℃、相对湿度不大于75%的环境下进行。
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