CN113980301A - 一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料及其制备方法 - Google Patents
一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料及其制备方法,该电缆料由下述组分按重量份组成:马来酸酐接枝乙烯‑辛烯共聚物(POE):2‑10份;聚乙烯(PE):5‑30份;三元乙丙橡胶(EPDM):5‑30份;阻燃剂5‑20份;硅烷偶联剂0.5‑1.5;抗氧剂:0.5‑2份;抗铜剂:0.1‑0.5份;润滑剂:1‑5份;光引发剂:1‑3份;多官能团交联剂0.5‑3份。本发明的充电桩绝缘料力学性能和电气性能优异,挤出后通过LED紫外光辐照设备,在线交联速度快,耐热性能好,产品具有高柔软性,各项性能均能符合欧洲市场EN 50620:2017标准和中国市场GB/T33594‑2017标准中绝缘电线指标。
Description
技术领域
本发明属于辐照交联电缆料领域,更具体是涉及一种电动汽车用紫外 光辐照交联高电性能充电桩绝缘电缆料及其制备方法。
背景技术
随着时代的进步与发展,促进居民汽车保有量的增长。然而汽车数量 的增长带来了石油能源减少、环境污染、城市空间拥挤等问题,于是新能 源汽车得到飞速发展。站在环保的角度,新能源汽车将成为未来汽车行业 发展的主导方向,新能源汽车的发展是一种潮流,是汽车行业发展不可逆 转的趋势。
充电桩作为新能源汽车产业的基础保障与关键环节,直接影响着新能 源汽车发展的前景与未来。而充电桩电缆是充电系统中最为关键的组成部 分,直接影响电动汽车充电的安全性与便利性。
充电桩电缆除了需要满足各项性能指标,还要保证整体硬度不能太高, 因为充电线缆在使用时不可避免的会被扭曲弯折拖动。电动汽车充电过程 中,持续时间长、电流强度大以及使用频率高,并且使用场所为户外,其 安全性能要放置首位,因此充电桩电缆要保证极好的绝缘性能,以及较高 的耐热性能和耐候性能,同时整根电缆需具备一定的阻燃性能,将充电过 程中电线短路等原因造成的损失降到最低。
而充电桩绝缘材料最为关键的两项指标:材料邵氏硬度90A以下,20℃ 以及正常运行时导体最高温度(90℃)下的绝缘电阻常数分别大于3670MΩ·km和3.67MΩ·km。既要保证材料柔软便于正常使用时反复弯折, 同时保证材料电气性能优异,是一项急需解决的难点。
发明内容
为解决上述问题,为解决现有技术的不足,本发明所要解决的技术问 题是提供一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料及其 制备方法,该绝缘材料选用茂金属催化剂、乙烯-高级α-烯烃(1-己烯) 共聚而成的特殊聚乙烯树脂和特种三元乙丙橡胶相结合,并配备高接枝率 的POE相容剂,以及选用疏水型硅烷偶联剂,最终材料电气性能优异且邵 氏硬度只有85A,该绝缘材料通过挤出机挤出成型,经过LED紫外光辐照设 备,生产出充电桩绝缘电线,可以符合EN 50620:2017和GB/T 33594-2017 标准中力学性能、电气性能、耐臭氧、250℃热延伸、20℃以及正常运行时 导体最高温度(90℃)下的绝缘电阻常数、无卤等指标。
本发明目的可通过以下技术方案实现:
本发明提供了一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电 缆料及其制备方法,绝缘材料由下述组分按重量份组成:马来酸酐接枝乙 烯-辛烯共聚物(POE):2-10份;聚乙烯(PE):5-30份;三元乙丙橡胶 (EPDM):5-30份;阻燃剂5-20份;硅烷偶联剂0.5-1.5;抗氧剂:0.5-2 份;抗铜剂:0.1-0.5份;润滑剂:1-5份;光引发剂:1-3份;多官能团 交联剂0.5-3份。
优选地,所述的马来酸酐接枝乙烯-辛烯共聚物(POE),乙烯含量为 30-80%,辛烯含量为20-30%,接枝率0.5-2.8%,熔融指数(190℃,2.16kg) 为0.5-6g/10min。
优选地,所述的聚乙烯(PE)为双峰线性聚乙烯和茂金属线型低密度 聚乙烯一种或两种组合,熔融指数(190℃,2.16kg)为0.3-5g/10min; 当聚乙烯(PE)为双峰线性聚乙烯和茂金属线型低密度聚乙烯的组合物时, 二者的质量比为1:2至1:4之间。
优选地,所述的三元乙丙橡胶(EPDM),所述的三元乙丙橡胶(EPDM) 包括乙烯、丙烯和第三单体,三元乙丙橡胶的门尼粘度30-70(ML 1+4, 125℃),所述第三单体为乙叉降冰片烯(ENB),ENB具有更快的交联速度。, 第三单体为乙叉降冰片烯(ENB)。
优选地,所述的阻燃剂是有机次膦酸铝和三聚氰胺氰尿酸盐复配组成。
优选地,所述的硅烷偶联剂为氨丙基三乙氧基硅烷、多氨基硅烷、γ- 缩水甘油醚氧丙基三甲氧基硅烷中的一种。
优选地,所述的抗氧剂为受阻酚类抗氧剂、亚磷酸酯类抗氧剂、硫代 酯类抗氧剂、金属离子钝化剂中的一种以上。
优选地,所述的金属离子钝化剂为受阻酚类抗铜剂。
优选地,所述的润滑剂由硅酮母粒、聚乙烯蜡、微晶石蜡中至少一种 组成。
优选地,所述的光引发剂为LED专用光引发剂,包括二苯甲酮及其衍 生物、肟酯类、香豆素酮、苯偶酰及其衍生物、酰基膦氧化物、樟脑醌、 硫杂蒽酮类光引发剂一种或多种组成。
优选地,所述的多官能团交联剂为三烯丙基异氰脲酸酯、乙氧基化三 羟甲基丙烷三丙烯酸酯、三羟甲基丙烷三丙烯酸酯、三聚氰酸三烯丙酯、 三羟甲基丙烷三甲基丙烯酸酯、三丙烯酸丙烷三甲醇酯、双三羟甲基丙烷 四丙烯酸酯一种或多种组成。
所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料及 其制备方法的制备方法,由下述步骤组成:
步骤1:称量各组分加入高速搅拌机搅拌均匀;
步骤2:拌匀后通过双螺杆、单螺杆挤出、热切、风冷,得到粒料;
步骤3:线材经过紫外光辐照设备进行交联;
所述步骤2中,双螺杆挤出机分为八个区,各区的工作温度为:第一 区120-130℃,第二区130-140℃,第三区130-140℃,第四区140-145℃, 第五区140-145℃,第六区150-155℃,第七区160-165℃,第八区170-175℃。单螺杆挤出机分为四个区,各区的工作温度为:第一区 140-150℃,第二区150-160℃,第三区160-170℃,第四区170-175℃;
所述步骤3中,线缆挤出速度和交联速度大于150米/每分钟,电线各 项性能均可符合EN 50620:2017和GB/T 33594-2017标准中绝缘电线要求。
本发明的优点:通过选用高电性能树脂和高柔软性树脂相结合,完美 地实现材料的高电气性能和高柔性,三元乙丙橡胶不仅硬度低还具有较高 的电气性能,通过柔性POE相容剂进一步降低高分子与阻燃剂界面作用, 最终通过疏水型硅烷偶联剂增强材料疏水性能,来提高材料电气性能。另 外相比较于电子束辐照交联方式(材料冷却成型后交联),紫外光交联(材 料熔融状态交联)时高分子材料处于非晶状态,交联过程中进一步抑制高分子结晶过程,材料结晶度有所下降,因此交联后的电线硬度会比辐照前 更低,手感更加柔软。
具体实施方式
本发明可以以许多不同的形式实施,而不应该被理解为限于在此阐述 的实施例。相反,提供这些实施例,使得本公开将是彻底和完整的,并且 将把本发明的构思充分传达给本领域技术人员。基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施 例,都属于本发明保护的范围。
为了具体的详解本发明的技术内容,所实现的目的和效果,以下结合 实施案例予以说明。
紫外光辐照交联高电性能充电桩绝缘电缆料各组分重量分数比例见下 表:
制备方法:步骤1:称量各组分加入高速搅拌机搅拌均匀;
步骤2:拌匀后通过双螺杆、单螺杆挤出、热切、风冷,得到粒料;
步骤3:线材经过紫外光辐照设备进行交联;
所述步骤2中,双螺杆挤出机分为八个区,各区的工作温度为:第一 区120-130℃,第二区130-140℃,第三区130-140℃,第四区140-145℃, 第五区140-145℃,第六区150-155℃,第七区160-165℃,第八区 170-175℃。单螺杆挤出机分为四个区,各区的工作温度为:第一区 140-150℃,第二区150-160℃,第三区160-170℃,第四区170-175℃;
所述步骤3中,线缆挤出速度和交联速度大于150米/每分钟,电线各 项性能均可符合EN 50620:2017和GB/T 33594-2017标准中电线要求。
实施例1-3紫外光辐照交联高电性能充电桩绝缘电缆料性能检测结 果:
通过对本发明的实施例1-3制得的充电桩绝缘料,挤出后通过LED紫 外光辐照设备在线交联,交联速度可达150米/分钟,提高工业化生产效率, 电线各项性能均可符合EN50620:2017和GB/T 33594-2017标准中电线要 求。为国内充电桩绝缘电线生产企业提供更具性价比材料和解决方案。
显然,上述实施例仅仅是为清楚地说明所作的举例,而并非对实施方 式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可 以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予 以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明的保护范 围之中。
Claims (10)
1.一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:由下述组分按重量份制备而成:
马来酸酐接枝乙烯-辛烯共聚物(POE):2-10份;
聚乙烯(PE):5-30份;
三元乙丙橡胶(EPDM):5-30份;
阻燃剂5-20份;
硅烷偶联剂0.5-1.5;
抗氧剂:0.5-2份;
抗铜剂:0.1-0.5份;
润滑剂:1-5份;
光引发剂:1-3份;
多官能团交联剂0.5-3份。
2.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的马来酸酐接枝乙烯-辛烯共聚物(POE),乙烯含量为30-80%,辛烯含量为20-30%,接枝率0.5-2.8%,熔融指数(190℃,2.16kg)为0.5-6g/10min。
3.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的聚乙烯(PE)为双峰线性聚乙烯和/或茂金属线型低密度聚乙烯,熔融指数(190℃,2.16kg)为0.3-5g/10min。
4.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的三元乙丙橡胶(EPDM),门尼粘度30-70(ML 1+4,125℃),第三单体为乙叉降冰片烯(ENB)。
5.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的阻燃剂为有机次膦酸铝和三聚氰胺氰尿酸盐复配组成,3:1至1:1之间;
所述的硅烷偶联剂为氨丙基三乙氧基硅烷、多氨基硅烷、γ-缩水甘油醚氧丙基三甲氧基硅烷中的一种。
6.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的抗氧剂为受阻酚类抗氧剂、亚磷酸酯类抗氧剂、硫代酯类抗氧剂、金属离子钝化剂中的一种以上;
所述的金属离子钝化剂为受阻酚类抗铜剂。
7.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的润滑剂为硅酮母粒、聚乙烯蜡、乙撑双硬脂酰胺中的一种或其中几种的组合物。
8.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的光引发剂包括二苯甲酮及其衍生物、肟酯类、香豆素酮、苯偶酰及其衍生物、酰基膦氧化物、樟脑醌、硫杂蒽酮类光引发剂一种或多种。
9.根据权利要求1所述的一种电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料,其特征在于:所述的多官能团交联剂为三烯丙基异氰脲酸酯、乙氧基化三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷三丙烯酸酯、三聚氰酸三烯丙酯、三羟甲基丙烷三甲基丙烯酸酯、三丙烯酸丙烷三甲醇酯、双三羟甲基丙烷四丙烯酸酯一种或多种组成。
10.一种权利要求1-9任一项所述电动汽车用紫外光辐照交联高电性能充电桩绝缘电缆料的制备方法,其特征在于,包括下述步骤:
步骤1:称量各组分加入高速搅拌机搅拌均匀;
步骤2:拌匀后通过双螺杆、单螺杆挤出、热切、风冷,得到粒料;
步骤3:线材经过紫外光辐照设备进行交联;
所述步骤2中,双螺杆挤出机分为八个区,各区的工作温度为:第一区120-130℃,第二区130-140℃,第三区130-140℃,第四区140-145℃,第五区140-145℃,第六区150-155℃,第七区160-165℃,第八区170-175℃。单螺杆挤出机分为四个区,各区的工作温度为:第一区140-150℃,第二区150-160℃,第三区160-170℃,第四区170-175℃;
所述步骤3中,线缆挤出速度和交联速度大于150米/每分钟,电线各项性能均可符合EN50620:2017和GB/T 33594-2017标准中电线要求。
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