CN114889226A - 电动汽车用高阻燃耐高温复合热缩管 - Google Patents
电动汽车用高阻燃耐高温复合热缩管 Download PDFInfo
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Abstract
本发明公开了一种电动汽车用高阻燃耐高温复合热缩管,高温复合热缩管管壁由内到外依次包括第一管壁、第二管壁和第三管壁;第一管壁的材料包括硅树脂或者乙烯‑醋酸乙烯共聚物;第二管壁的材料包括高压低密度聚乙烯、乙烯一醋酸乙烯共聚物、POE塑料、低烟低卤环保型三氧化锑、十溴二苯醚阻燃剂、BHT和受阻胺类光稳定剂、BHT和受阻胺类光稳定剂;第三管壁的材料包括三元乙丙橡胶、乙烯一醋酸乙烯共聚物、POE塑料、无卤氮磷系阻燃剂和氢氧化铝阻燃剂;本发明制备出的产品能耐受5千伏电压、V0级阻燃等级杜绝火灾隐患发生;在‑40‑120℃条件下能够使用20年,能够有效防止接触点受潮所导致的铜腐蚀产生。
Description
技术领域
本发明涉及新能源技术领域,具体是电动汽车用高阻燃耐高温复合热缩管。
背景技术
目前在新能源汽车电池组广泛使用铜排方式连接。传统热缩套管能起到绝缘、耐温、阻燃的功效。但是传统热缩套管中有效绝缘电压小于2000v;阻燃性能为V1,使用温度范围为-20℃-105℃;虽然传统热缩套管能够满足目前电池组要求,但是随着新能源电池科技的发展和应用场所的扩大,大功率电池组将不断出现,所以对热缩套管的最高和最低适宜工作温度提出了更高的要求,所以需要对传统热缩套管进行改进。
发明内容
本发明的目的在于提供电动汽车用高阻燃耐高温复合热缩管,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种电动汽车用高阻燃耐高温复合热缩管,所述高温复合热缩管管壁由内到外依次包括第一管壁、第二管壁和第三管壁;
所述第一管壁的材料包括硅树脂或者乙烯-醋酸乙烯共聚物;
所述第二管壁的材料包括高压低密度聚乙烯、乙烯一醋酸乙烯共聚物、POE塑料、低烟低卤环保型三氧化锑、十溴二苯醚阻燃剂、BHT和受阻胺类光稳定剂;
所述第三管壁的材料包括三元乙丙橡胶、乙烯一醋酸乙烯共聚物、POE塑料、无卤氮磷系阻燃剂和氢氧化铝阻燃剂;
所述第一管壁、第二管壁以及第三管壁具有形状记忆功能并且所述第一管壁、第二管壁以及第三管壁可以扩张到自身直径的2倍。
作为本发明的一种优选技术方案,上述当所述第一管壁由硅树脂制成时,所述硅树脂的含量大于等于85%;当所述第一管壁由乙烯-醋酸乙烯共聚物制备时,所述乙烯-醋酸乙烯共聚物的含量大于等于85%;当所述第一管壁由硅树脂和乙烯-醋酸乙烯共聚物制备时,所述硅树脂和乙烯-醋酸乙烯共聚物的总含量大于等于85%。
作为本发明的一种优选技术方案,上述高压低密度聚乙烯为1重量份、乙烯一醋酸乙烯共聚物为5重量份、POE塑料为1重量份、低烟低卤环保型三氧化锑为0.8重量份、十溴二苯醚阻燃剂为1.7重量份、BHT为0.05重量份和受阻胺类光稳定剂为0.05重量份。
作为本发明的一种优选技术方案,上述三元乙丙橡胶为1重量份、乙烯一醋酸乙烯共聚物为5重量份、POE塑料为0.5重量份、无卤氮磷系阻燃剂为1重量份和氢氧化铝阻燃剂为2.5重量份。
与现有技术相比,本发明的有益效果是:
本发明制备出的产品本身有很强的绝缘、阻燃、密封、防腐功能,能耐受5千伏电压、V0级阻燃等级杜绝火灾隐患发生。在-40-120℃条件下能够使用20年,具有极佳的密封隔水性能,能够有效防止接触点受潮所导致的铜腐蚀产生。
附图说明
图1是电动汽车用高阻燃耐高温复合热缩管结构示意图。
图中:1、第一管壁;2、第二管壁;3、第三管壁。
具体实施方式
为了使本领域的技术人员更好地理解本申请方案,下面将结合本申请实施例中的附图对本申请实施例中的技术方案进行清楚、完整的描述,显然,所描述的实施例仅仅是本申请一部分的实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动成果前提下所获得的所有其他实施例,都应当属于本申请保护的范围。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合,下面将结合实施例来详细说明本申请。
实施例1
一种电动汽车用高阻燃耐高温复合热缩管,所述高温复合热缩管管壁由内到外依次包括第一管壁1、第二管壁2和第三管壁3;所述第一管壁1的材料为硅树脂;所述硅树脂的含量大于等于85%。
所述第二管壁2由高压低密度聚乙烯1重量份、乙烯一醋酸乙烯共聚物5重量份、POE塑料1重量份、低烟低卤环保型三氧化锑0.8重量份、十溴二苯醚阻燃剂1.7重量份、BHT为0.05重量份和受阻胺类光稳定剂为0.05重量份制成;
所述第三管壁3由三元乙丙橡胶1重量份、乙烯一醋酸乙烯共聚物5重量份、POE塑料0.5重量份、无卤氮磷系阻燃剂1重量份、氢氧化铝阻燃剂2.5重量份制成;
所述第一管壁11、第二管壁22以及第三管壁33具有形状记忆功能并且所述第一管壁11、第二管壁22以及第三管壁33可以扩张到自身直径的2倍。
将第一管壁1的原材料、第二管壁2的原材料、第三管壁3的原材料分别按比例投入密炼机;接着进行混合、加热和密炼,最后通过双螺杆造粒机挤出切割成粒。
将第一管壁1的原材料、第二管壁2的原材料、第三管壁3的原材料制备出的颗粒物均放入塑料挤出机,塑料挤出机配合特制模具分别混合三种颗粒物,同时通过特制模具挤出三层不同壁厚性能的管材;
接着对挤出的管材运用高能电子加速器进行辐射交联改变原有分子结构,使其取得“形状记忆效应”;最后使用特制正负压扩管机把辐射交联后的管材进行自身2倍的扩张塑形成为动汽车用高阻燃耐高温复合热缩管成品,外观美观光滑柔软可制成各种颜色、阻燃、绝缘、耐温、耐开裂。如图1所示,图1中A处区域为热缩管成品扩张前的状态,B处区域为热缩管成品扩张后的状态。
实施例2
实施例2中第一管壁1由乙烯-醋酸乙烯共聚物制备;所述乙烯-醋酸乙烯共聚物的含量大于等于85%,其余内容与实施例1完全相同。
实施例3
实施例3中所述第一管壁1由硅树脂和乙烯-醋酸乙烯共聚物制备时,所述硅树脂和乙烯-醋酸乙烯共聚物的总含量大于等于85%,其余内容与实施例1完全相同。
测量实施例1、实施例2、实施例3制备出的高阻燃耐高温复合热缩管的绝缘性、阻燃性、耐寒性和耐温性,结果如下表所示。
性能 | 现有产品 | 实施例1 | 实施例2 | 实施例3 |
绝缘 | ≥2000V | ≥5000V | ≥5000V | ≥5000V |
阻燃 | V1 | V0 | V0 | V0 |
耐温 | ≥105℃ | ≥125℃ | ≥125℃ | ≥125℃ |
耐寒 | ≥-20℃ | ≥-40℃ | ≥-40℃ | ≥-40℃ |
实施例1、实施例2、实施例3制备出的管道的性能参数如上表所示,与现有产品相比,本实施例制备出的产品具有以下优异性能:产品本身有很强的绝缘、阻燃、密封、防腐功能,能耐受5千伏电压、V0级阻燃等级杜绝火灾隐患发生。在-40-120℃条件下能够使用20年,具有极佳的密封隔水性能,能够有效防止接触点受潮所导致的铜腐蚀产生。
以上的,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (4)
1.一种电动汽车用高阻燃耐高温复合热缩管,其特征在于,所述高温复合热缩管管壁由内到外依次包括第一管壁(1)、第二管壁(2)和第三管壁(3);
所述第一管壁(1)的材料包括硅树脂或者乙烯-醋酸乙烯共聚物;
所述第二管壁(2)的材料包括高压低密度聚乙烯、乙烯一醋酸乙烯共聚物、POE塑料、低烟低卤环保型三氧化锑、十溴二苯醚阻燃剂、BHT和受阻胺类光稳定剂;
所述第三管壁(3)的材料包括三元乙丙橡胶、乙烯一醋酸乙烯共聚物、POE塑料、无卤氮磷系阻燃剂和氢氧化铝阻燃剂;
所述第一管壁(1)、第二管壁(2)以及第三管壁(3)具有形状记忆功能并且所述第一管壁(1)、第二管壁(2)以及第三管壁(3)可以扩张到自身直径的2倍。
2.根据权利要求1所述的电动汽车用高阻燃耐高温复合热缩管,其特征在于,当所述第一管壁(1)由硅树脂制成时,所述硅树脂的含量大于等于85%;当所述第一管壁(1)由乙烯-醋酸乙烯共聚物制备时,所述乙烯-醋酸乙烯共聚物的含量大于等于85%;当所述第一管壁(1)由硅树脂和乙烯-醋酸乙烯共聚物制备时,所述硅树脂和乙烯-醋酸乙烯共聚物的总含量大于等于85%。
3.根据权利要求1所述的电动汽车用高阻燃耐高温复合热缩管,其特征在于,所述高压低密度聚乙烯为1重量份、乙烯一醋酸乙烯共聚物为5重量份、POE塑料为1重量份、低烟低卤环保型三氧化锑为0.8重量份、十溴二苯醚阻燃剂为1.7重量份、BHT为0.05重量份和受阻胺类光稳定剂为0.05重量份。
4.根据权利要求1所述的电动汽车用高阻燃耐高温复合热缩管,其特征在于,所述三元乙丙橡胶为1重量份、乙烯一醋酸乙烯共聚物为5重量份、POE塑料为0.5重量份、无卤氮磷系阻燃剂为1重量份和氢氧化铝阻燃剂为2.5重量份。
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