CN110299229B - 一种石墨烯涂层建筑环保电缆 - Google Patents

一种石墨烯涂层建筑环保电缆 Download PDF

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CN110299229B
CN110299229B CN201910486806.9A CN201910486806A CN110299229B CN 110299229 B CN110299229 B CN 110299229B CN 201910486806 A CN201910486806 A CN 201910486806A CN 110299229 B CN110299229 B CN 110299229B
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杨彦
杨劲光
胡润逸
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DONGGUAN MINXING CABLES CO LTD
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Abstract

本发明涉及电缆的技术领域,特别是涉及一种石墨烯涂层建筑环保电缆,包括缆芯单元,缆芯单元由内至外依次设置有铜合金导体、石墨烯镀层和绝缘层,缆芯单元外依次包覆有包带、PE内护层和聚烯烃护套,在缆芯与包带之间填充有填充层;利用石墨烯的超强导电特性和优良的电磁屏蔽性能,制成的新型导电涂料可应用于电缆中。石墨烯具有导电性能极强的优良特性,将导电涂料形成石墨烯导电层,改善了屏蔽层的热稳定性;电缆整体机械性能、电气性能、耐化学性能优异,聚烯烃绝缘层的设置更节能环保,聚烯烃护套的设置更耐用,使用寿命长。

Description

一种石墨烯涂层建筑环保电缆
技术领域
本发明涉及电缆的技术领域,特别是涉及一种石墨烯涂层建筑环保电缆。
背景技术
电缆按照光伏电站的系统可分为直流电缆及交流电缆,根据用途及使用环境的可以分为:直流电缆和交流电缆等。以直流电缆为例,直流电缆又可以分为:组件与组件之间的串联电缆,组串之间及其组串至直流配电箱之间的并联电缆,直流配电箱至逆变器之间电缆,这些电缆均为直流电缆,户外敷设较多,需防潮、防暴晒、耐寒、耐热、抗紫外线,某些特殊的环境下还需防酸碱等化学物质。
目前,对于我国建筑所用的屏蔽电缆,都是使用金属网状编织层把信号线包裹起来的传输线,金属网状编织层统称为屏蔽层。在实际应用中时,采用金属网状编织层的电缆存在一些不可忽视的问题:由于屏蔽系统对接地的苛刻要求,极容易造成接地不良,比如接地电阻过大、接地电位不均衡等,这样在传输系统的某两点间便会产生电位差,进而产生金属屏蔽层上的电流,造成屏蔽层不连续,破坏其完整性,这样,屏蔽层本身已经成为一个最大的干扰源,因而导致其性能反而远不如非屏蔽系统。
发明内容
本发明的目的在于针对现有技术中的不足,而提供一种传输性能好的石墨烯涂层建筑环保电缆。
本发明的目的通过以下技术方案实现:本申请提供一种石墨烯涂层建筑环保电缆,包括缆芯单元,缆芯单元由内至外依次设置有铜合金导体、石墨烯镀层和绝缘层,缆芯单元外依次包覆有包带、PE内护层和聚烯烃护套,在缆芯与包带之间填充有填充层;其中,铜合金导体的直径为5mm,石墨烯镀层的厚度为0.3mm,绝缘层的厚度为1.65mm,包带的厚度为0.3mm,PE内护层的厚度为0.55mm,聚烯烃护套的厚度为0.55mm;其中,石墨烯涂层建筑环保电缆的制备方法包括以下步骤:步骤a,在铜合金导体外表面涂覆上导电涂料,导电涂料干燥后形成石墨烯镀层;步骤b,在步骤a形成的石墨烯镀层外挤包出绝缘层,制得缆芯单元;步骤c,在缆芯单元的外周侧填充形成填充层;步骤d,在填充层外表面绕包上包带;步骤e,在包带的外表面包覆上PE内护层;步骤f,在PE内护层的外表面包裹上聚烯烃护套;在步骤a中,导电涂料由以下重量分数的原料制成:39-44份环氧树脂;20-22份石墨烯粉末、5-10份铜粉、6-12份铝粉、丙烯酸酯类流平剂2-3份,聚丙烯酰胺2-3份,甲酸甲酯30-60份,硅烷偶联剂2-3份;利用石墨烯的超强导电特性和优良的电磁屏蔽性能,制成的新型导电涂料可应用于电缆中。石墨烯具有导电性能极强的优良特性,将导电涂料形成石墨烯导电层,改善了屏蔽层的热稳定性,提高了屏蔽层对电场的均化效果,减少了电缆在运行中可能出现的局部放电现象,并且提高了电缆的使用寿命。此外,石墨烯导电层的电子迁移率高,可以有效的提高电缆的电力传输性能,提高电缆的载流量。石墨烯涂层是根据趋肤效应,在交流电或交变电磁场时,电流集中在导体的“皮肤”部分,也就是说电流集中在导体外表的薄层,所以石墨烯超强的导电性能应用于电缆中输送电能。
其中,导电涂料的制备方法:将石墨烯粉末加入到部分甲酸甲酯中,超声波混合30-60min后获得溶液a;将铜粉加入到另一部分甲酸甲酯中,超声10-20min分钟后,放置10-20min,再将铝粉加入,超声10-20min分钟后,放置10-20min,制得溶液b;将丙烯酸酯类流平剂、聚丙烯酰胺和硅烷偶联剂混合均匀,制得溶液c,将溶液a和溶液c混合并搅拌30min,再将溶液b加入混合均匀,制得导电涂料。
其中,填充层为聚丙烯填充绳,聚丙烯填充绳料代替其他材料的填充绳,具有良好的电气绝缘性和柔软性,长期填充在电缆中不会腐烂。
其中,铜合金为无氧铜、铜包钢、高强度铜合金、镀锡铜、镀镍铜中的其中一种;其中,以纯铜为基体加入一种或几种其他元素所构成的合金,性质强度高,硬度大,耐化学腐蚀性强。
其中,绝缘层为聚烯烃绝缘层,其自身特性环保,电气绝缘性能好,燃烧不产生有害气体,透光率达到≧60%。
其中,包带为阻水带,阻水带的阻水功能主要是由其所含的遇水可膨胀的高吸水材料(称作阻水剂),当阻水剂遇到水以后可迅速膨胀,形成大体积的胶状物(该阻水剂的吸水量可达自身的数百倍),从而阻止水树的增长,防止水分继续渗入和扩散减少电缆中水及潮气的渗入,延长电缆的工作寿命。
本发明的有益效果:
(1)、通过导电涂料形成的石墨烯镀层,其改善了屏蔽层的热稳定性,提高了屏蔽层对电场的均化效果,减少了电缆在运行中可能出现的局部放电现象,并且提高了电缆的使用寿命。
(2)、石墨烯镀层的电子迁移率高,可以有效的提高电缆的电力传输性能,提高电缆的载流量。石墨烯涂层是根据趋肤效应,在交流电或交变电磁场时,电流集中在导体的“皮肤”部分,也就是说电流集中在导体外表的薄层,所以石墨烯超强的导电性能应用于电缆中输送电能。
(3)电缆整体机械性能、电气性能、耐化学性能优异,聚烯烃绝缘层的设置更节能环保,聚烯烃护套的设置更耐用,使用寿命长。
附图说明
利用附图对本发明作进一步说明,但附图中的实施例不构成对本发明的任何限制,对于本领域的普通技术人员,在不付出创造性劳动的前提下,还可以根据以下附图获得其它的附图。
图1为本发明的一种石墨烯涂层建筑环保电缆的结构示意图。
附图标记:铜合金导体1、石墨烯镀层2、绝缘层3、填充层4、包带5、PE内护层6、聚烯烃护套7。
具体实施方式
结合以下实施例对本发明作进一步描述。
本发明的一种石墨烯涂层建筑环保电缆的具体实施方式,如图1所示,其结构包括三个缆芯单元,缆芯单元由内至外依次设置有铜合金导体1、石墨烯镀层2和绝缘层3,缆芯单元外依次包覆有包带5、PE内护层6和聚烯烃护套7,在缆芯与包带5之间填充有填充层4;其中,铜合金导体1的直径为5mm,石墨烯镀层2的厚度为0.3mm,绝缘层3的厚度为1.65mm,包带5的厚度为0.3mm,PE内护层6的厚度为0.55mm,聚烯烃护套7的厚度为0.55mm。
作为优选的方案,石墨烯涂层建筑环保电缆的制备方法包括以下步骤:步骤a,在铜合金导体1外表面涂覆上导电涂料,导电涂料干燥后形成石墨烯镀层2;步骤b,在步骤a形成的石墨烯镀层外挤包出绝缘层,制得缆芯单元;步骤c,在缆芯单元的外周侧填充形成填充层4;步骤d,在填充层4外表面绕包上包带5;步骤e,在包带5的外表面包覆上PE内护层6;步骤f,在PE内护层6的外表面包裹上聚烯烃护套7。利用石墨烯的超强导电特性和优良的电磁屏蔽性能,制成的新型导电涂料可应用于电缆中。石墨烯具有导电性能极强的优良特性,将导电涂料形成石墨烯导电层,改善了屏蔽层的热稳定性,提高了屏蔽层对电场的均化效果,减少了电缆在运行中可能出现的局部放电现象,并且提高了电缆的使用寿命。此外,石墨烯导电层的电子迁移率高,可以有效的提高电缆的电力传输性能,提高电缆的载流量。石墨烯涂层是根据趋肤效应,在交流电或交变电磁场时,电流集中在导体的“皮肤”部分,也就是说电流集中在导体外表的薄层,所以石墨烯超强的导电性能应用于电缆中输送电能。
在本实施例中,导电涂料由以下重量分数的原料制成:39-44份环氧树脂;20-22份石墨烯粉末、5-10份铜粉、6-12份铝粉、丙烯酸酯类流平剂2-3份,聚丙烯酰胺2-3份,甲酸甲酯30-60份,硅烷偶联剂2-3份。导电涂料的制备方法:将石墨烯粉末加入到部分甲酸甲酯中,超声波混合30-60min后获得溶液a;将铜粉加入到另一部分甲酸甲酯中,超声10-20min分钟后,放置10-20min,再将铝粉加入,超声10-20min分钟后,放置10-20min,制得溶液b;将丙烯酸酯类流平剂、聚丙烯酰胺和硅烷偶联剂混合均匀,制得溶液c,将溶液a和溶液c混合并搅拌30min,再将溶液b加入混合均匀,制得导电涂料。
在本实施例中,填充层为聚丙烯填充绳,聚丙烯填充绳料代替其他材料的填充绳,具有良好的电气绝缘性和柔软性,长期填充在电缆中不会腐烂。
在本实施例中,铜合金为无氧铜、铜包钢、高强度铜合金、镀锡铜、镀镍铜中的其中一种;其中,以纯铜为基体加入一种或几种其他元素所构成的合金,性质强度高,硬度大,耐化学腐蚀性强。
在本实施例中,绝缘层3为聚烯烃绝缘层3,其自身特性环保,电气绝缘性能好,燃烧不产生有害气体,透光率达到≧60%。
在本实施例中,包带5为阻水带,阻水带的阻水功能主要是由其所含的遇水可膨胀的高吸水材料(称作阻水剂),当阻水剂遇到水以后可迅速膨胀,形成大体积的胶状物(该阻水剂的吸水量可达自身的数百倍),从而阻止水树的增长,防止水分继续渗入和扩散减少电缆中水及潮气的渗入,延长电缆的工作寿命。
在本实施例中,聚乙烯内护层,聚乙烯是乙烯的聚合物,无毒,容易着色,化学稳定性好,耐寒,耐辐射,耐水性能好,电绝缘性好。保护绝缘线芯不被铠装所割伤。
在本实施例中,聚烯烃护套7:熔融温度约240℃,密度0.83克/厘米3,为最轻的高分子,透明度高,绝缘性、耐腐蚀性好,透气率高(为聚乙烯的10倍)对电缆起到保护,防水,防紫外线,防鼠蚁,耐磨,阻止电缆燃烧等综合性能。
本实施例的一种石墨烯涂层建筑环保电缆,与现有技术相比,通过导电涂料形成的石墨烯镀层2,其改善了屏蔽层的热稳定性,提高了屏蔽层对电场的均化效果,减少了电缆在运行中可能出现的局部放电现象,并且提高了电缆的使用寿命。石墨烯镀层2的电子迁移率高,可以有效的提高电缆的电力传输性能,提高电缆的载流量。石墨烯涂层是根据趋肤效应,在交流电或交变电磁场时,电流集中在导体的“皮肤”部分,也就是说电流集中在导体外表的薄层,所以石墨烯超强的导电性能应用于电缆中输送电能。电缆整体机械性能、电气性能、耐化学性能优异,聚烯烃绝缘层3的设置更节能环保,聚烯烃护套7的设置更耐用,使用寿命长。
最后应当说明的是,以上实施例仅用以说明本发明的技术方案,而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细地说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的实质和范围。

Claims (5)

1.一种石墨烯涂层建筑环保电缆,其特征在于,包括缆芯单元,缆芯单元由内至外依次设置有铜合金导体、石墨烯镀层和绝缘层,缆芯单元外依次包覆有包带、PE内护层和聚烯烃护套,在缆芯与包带之间填充有填充层;其中,铜合金导体的直径为5mm,所述石墨烯镀层的厚度为0.3mm,所述绝缘层的厚度为1.65mm,所述包带的厚度为0.3mm,所述PE内护层的厚度为0.55mm,所述聚烯烃护套的厚度为0.55mm;
其中,石墨烯涂层建筑环保电缆的制备方法包括以下步骤:
步骤a,在铜合金导体外表面涂覆上导电涂料,导电涂料干燥后形成石墨烯镀层;
步骤b,在步骤a形成的石墨烯镀层外挤包出绝缘层,制得缆芯单元;
步骤c,在缆芯单元的外周侧填充形成填充层;
步骤d,在填充层外表面绕包上包带;
步骤e,在包带的外表面包覆上PE内护层;
步骤f,在PE内护层的外表面包裹上聚烯烃护套;
在步骤a中,导电涂料由以下重量分数的原料制成:39-44份环氧树脂、20-22份石墨烯粉末、5-10份铜粉、6-12份铝粉、丙烯酸酯类流平剂2-3份、聚丙烯酰胺2-3份、甲酸甲酯30-60份、硅烷偶联剂2-3份;所述导电涂料的制备方法:将石墨烯粉末加入到部分甲酸甲酯中,超声波混合30-60min后获得溶液a;将铜粉加入到另一部分甲酸甲酯中,超声10-20min分钟后,放置10-20min,再将铝粉加入,超声10-20min分钟后,放置10-20min,制得溶液b;将丙烯酸酯类流平剂、聚丙烯酰胺和硅烷偶联剂混合均匀,制得溶液c,将溶液a和溶液c混合并搅拌30min,再将溶液b加入混合均匀,制得导电涂料。
2.根据权利要求1所述的一种石墨烯涂层建筑环保电缆,其特征在于:所述填充层为聚丙烯填充绳。
3.根据权利要求1所述的一种石墨烯涂层建筑环保电缆,其特征在于:所述铜合金为无氧铜、铜包钢、高强度铜合金、镀锡铜、镀镍铜中的其中一种。
4.根据权利要求1所述的一种石墨烯涂层建筑环保电缆,其特征在于:所述绝缘层为聚烯烃绝缘层。
5.根据权利要求1所述的一种石墨烯涂层建筑环保电缆,其特征在于:所述包带为阻水带。
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