CN104231396A - 一种无卤阻燃电线 - Google Patents
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Abstract
本发明涉及一种无卤阻燃电线,所述电线绝缘层通过紫外光辐照电线绝缘料进行交联;所述电线绝缘料按质量份数,包括如下组分:PE40~70份;EVA40~70份;SBS12~20份;马来酸酐接枝乙烯-乙酸乙烯酯共聚物3~7份;氢氧化镁60~80份;氢氧化铝60~80份;硼酸锌20~35份。本发明通过对无卤阻燃电线绝缘料中各组分的选择,获得了机械性能和耐候性表现优良的无卤阻燃电线。
Description
技术领域
本发明涉及无卤阻燃电线,具体地,本发明涉及一种通过紫外光辐照进行交联的无卤阻燃电线绝缘料。
背景技术
随着经济的迅速发展,电线电缆在各个领域中都得到广泛的应用。随之电气火灾事故的频繁发生,电线电缆的阻燃问题逐渐引起世界各国的重视。20世纪70年代,国际上开始对电线电缆的阻燃性能进行研究,并生产出具有阻燃性能的电线电缆。但是,以PVC为基材的含卤阻燃电缆燃烧时释放出大量烟雾和有毒的、腐蚀性的气体是火灾中危险因素,在火灾中妨碍了人们的安全撤离和灭火工作,使生命财产遭到严重损失。20世纪70年代末、80年代初,开始研制性能更好的“清洁”的低烟无卤阻燃聚烯烃电线电缆并已得到应用。
阻燃电线电缆通常可分为一般阻燃电线电缆、低烟低卤阻燃电线电缆和低烟无卤阻燃电线电缆。目前我国阻燃电线电缆产品以含卤阻燃为主,这种电线电缆在燃烧时释放出大量的浓烟和腐蚀性卤化物,造成人员伤亡并腐蚀各种设备,即所谓的“二次灾害”。为达到低烟、低毒及阻燃目的,国内外许多厂家都致力于低烟低卤,低烟无卤阻燃材料的开发。这类材料燃烧时发烟量少,释放出有毒气体少,减少对人体及仪器设备的伤害。国外发达国家对低烟低卤、低烟无卤阻燃电线电缆料的研究比较早,技术较成熟,现在已进入实用阶段。我国对低烟低卤、特别是低烟无卤阻燃电线电缆料的研究开发比较晚,目前我国对低烟无卤阻燃电线电缆料的研究还处于初期,有的厂家已生产出低烟无卤阻燃电线电缆料,但大部分存在机械性能和耐候性能较差的问题。
因此,本领域亟需一种用于电线绝缘层的无卤树脂组合物,其机械性能和耐候性表现优良。
发明内容
本发明的目的之一在于提供一种无卤阻燃电线,所述电线绝缘层通过紫外光辐照电线绝缘料进行交联;
所述电线绝缘料按质量份数,包括如下组分:
PE 40~70份
EVA 40~70份
SBS 12~20份
马来酸酐接枝乙烯-乙酸乙烯酯共聚物3~7份
氢氧化镁 60~80份
氢氧化铝 60~80份
硼酸锌 20~35份。
优选地,所述电线绝缘料按重量份数还包括如下组分:
润滑剂 3~6份
抗氧剂 1~3份
色母料 7~15份。
优选地,所述PE为低密度聚乙烯LDPE,优选熔体指数为2g/10min,密度为0.918g/cm3的LDPE。
所述熔体指数的测量方法依据ASTM D1238,密度的测量方法依据ASTMD792。
优选地,所述EVA(乙烯-醋酸乙烯共聚物)中VA(醋酸乙烯酯)的含量为15~20%,例如16%、18%、19%等,优选17%。
优选地,所述SBS(苯乙烯-丁二烯-苯乙烯三嵌段共聚物)为线型SBS1401。
优选地,所述的马来酸酐接枝乙烯-乙酸乙烯酯共聚物的接枝率为质量百分含量1.0~1.2%,熔体指数为1.1~2.0g/10min。
优选地,所述氢氧化镁、氢氧化铝和硼酸锌的粒径独立地选自1.2~1.8μm之间,优选1.4~1.6μm之间。
优选地,所述抗氧剂为受阻酚类抗氧剂和硫醚类抗氧剂按质量比1:3~4配比而得;
优选地,所述的色母粒的基体树脂为EVA。
优选地,所述抗氧剂选自受阻酚类抗氧剂和/或硫醚类抗氧剂;
所述的受阻酚类抗氧剂为四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯;所述的硫醚类抗氧剂为硫代二丙酸双十八醇酯。
本发明所述电线通过如下方法制备得到:
(1)将配方量的PE、EVA、SBS、马来酸酐接枝乙烯-乙酸乙烯酯共聚物和色母料密炼均匀;
(2)接着加入配方量的氢氧化镁、氢氧化铝、硼酸锌、润滑剂和抗氧剂密炼均匀,出料,得到混合料;
(3)将混合料于130~150℃挤出、水冷、抽风干燥、切粒,得到粒料;
(4)将粒料与金属芯线在线缆挤出机上成型,并风冷、收卷,得到电线;
(5)将电线进行紫外光辐照,制成无卤阻燃电线;
优选地,步骤(1)中所述的密炼的条件为110~130℃密炼3~5min;
步骤(2)中所述的密炼的条件为120~140℃密炼3~5min。
步骤(5)中所述的紫外光辐照的剂量为8~14Mrad。
与现有技术相比,本发明具有如下有益效果:
本发明通过对无卤阻燃电线绝缘料中各组分的选择,获得了机械性能和耐候性表现优良的无卤阻燃电线。
具体实施方式
为更好地说明本发明,便于理解本发明的技术方案,本发明的典型但非限制性的实施例如下:
所述无卤阻燃电线通过如下方法制备得到:
(1)将配方量的PE、EVA、SBS、马来酸酐接枝乙烯-乙酸乙烯酯共聚物和色母料密炼均匀;
(2)接着加入配方量的氢氧化镁、氢氧化铝、硼酸锌、润滑剂和抗氧剂密炼均匀,出料,得到混合料;
(3)将混合料于130~150℃挤出、水冷、抽风干燥、切粒,得到粒料;
(4)将粒料与金属芯线在线缆挤出机上成型,并风冷、收卷,得到电线;
(5)将电线进行紫外光辐照,制成无卤阻燃电线;
实施例1
一种无卤阻燃电线绝缘层绝缘料按质量分数包括如下组分:
所述电线绝缘料按质量份数,包括如下组分:
PE 40份
EVA 70份
SBS 12份
马来酸酐接枝乙烯-乙酸乙烯酯共聚物7份
氢氧化镁 60份
氢氧化铝 80份
硼酸锌 20份;
其制备方法中,(1)中所述的密炼的条件为130℃密炼3min;
步骤(2)中所述的密炼的条件为120℃密炼5min。
步骤(5)中所述的紫外光辐照的剂量为8Mrad。
实施例2
一种无卤阻燃电线绝缘层绝缘料按质量分数包括如下组分:
所述电线绝缘料按质量份数,包括如下组分:
PE 70份
EVA 40份
SBS 120份
马来酸酐接枝乙烯-乙酸乙烯酯共聚物3份
氢氧化镁 80份
氢氧化铝 60份
硼酸锌 35份
润滑剂 3份
抗氧剂 3份
色母料 7份;
其制备方法中,(1)中所述的密炼的条件为110℃密炼5min;
步骤(2)中所述的密炼的条件为140℃密炼3min。
步骤(5)中所述的紫外光辐照的剂量为14Mrad。
实施例3
一种无卤阻燃电线绝缘层绝缘料按质量分数包括如下组分:
所述电线绝缘料按质量份数,包括如下组分:
PE 50份
EVA 50份
SBS 18份
马来酸酐接枝乙烯-乙酸乙烯酯共聚物5份
氢氧化镁 70份
氢氧化铝 70份
硼酸锌 30份
润滑剂 6份
抗氧剂 1份
色母料 15份;
其制备方法中,(1)中所述的密炼的条件为120℃密炼4min;
步骤(2)中所述的密炼的条件为130℃密炼4min。
步骤(5)中所述的紫外光辐照的剂量为13Mrad。
实施例4
一种无卤阻燃电线绝缘层绝缘料按质量分数包括如下组分:
所述电线绝缘料按质量份数,包括如下组分:
PE 60份
EVA 60份
SBS 15份
马来酸酐接枝乙烯-乙酸乙烯酯共聚物4份
氢氧化镁 64份
氢氧化铝 72份
硼酸锌 27份
润滑剂 3份
抗氧剂 3份
色母料 7份;
其制备方法中,(1)中所述的密炼的条件为118℃密炼3min;
步骤(2)中所述的密炼的条件为128℃密炼5min。
步骤(5)中所述的紫外光辐照的剂量为11Mrad。
应该注意到并理解,在不脱离后附的权利要求所要求的本发明的精神和范围的情况下,能够对上述详细描述的本发明做出各种修改和改进。因此,要求保护的技术方案的范围不受所给出的任何特定示范教导的限制。
申请人声明,本发明通过上述实施例来说明本发明的详细方法,但本发明并不局限于上述详细方法,即不意味着本发明必须依赖上述详细方法才能实施。所属技术领域的技术人员应该明了,对本发明的任何改进,对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等,均落在本发明的保护范围和公开范围之内。
Claims (10)
1.一种无卤阻燃电线,其特征在于,所述电线绝缘层通过紫外光辐照电线绝缘料进行交联;
所述电线绝缘料按质量份数,包括如下组分:
PE 40~70份
EVA 40~70份
SBS 12~20份
马来酸酐接枝乙烯-乙酸乙烯酯共聚物3~7份
氢氧化镁 60~80份
氢氧化铝 60~80份
硼酸锌 20~35份。
2.如权利要求1所述的无卤阻燃电线,其特征在于,所述电线绝缘料按重量份数还包括如下组分:
润滑剂 3~6份
抗氧剂 1~3份
色母料 7~15份。
3.如权利要求1或2所述的无卤阻燃电线,其特征在于,所述PE为低密度聚乙烯LDPE,优选熔体指数为2g/10min,密度为0.918g/cm3的LDPE。
4.如权利要求1~3之一所述的无卤阻燃电线,其特征在于,所述EVA中VA的含量为15~20%,优选17%。
5.如权利要求1~4之一所述的无卤阻燃电线,其特征在于,所述SBS为线型SBS1401。
6.如权利要求1~5之一所述的无卤阻燃电线,其特征在于,所述的马来酸酐接枝乙烯-乙酸乙烯酯共聚物的接枝率为质量百分含量1.0~1.2%,熔体指数为 1.1~2.0g/10min。
7.如权利要求1~6之一所述的无卤阻燃电线,其特征在于,所述氢氧化镁、氢氧化铝和硼酸锌的粒径独立地选自1.2~1.8μm之间,优选1.4~1.6μm之间。
8.如权利要求1~7之一所述的无卤阻燃电线,其特征在于,所述抗氧剂为受阻酚类抗氧剂和硫醚类抗氧剂按质量比1:3~4配比而得;
优选地,所述的色母粒的基体树脂为EVA。
9.如权利要求1~8之一所述的无卤阻燃电线,其特征在于,所述抗氧剂选自受阻酚类抗氧剂和/或硫醚类抗氧剂;
所述的受阻酚类抗氧剂为四[β-(3,5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯;所述的硫醚类抗氧剂为硫代二丙酸双十八醇酯。
10.如权利要求1~9之一所述的无卤阻燃电线,其特征在于,所述电线通过如下方法制备得到:
(1)将配方量的PE、EVA、SBS、马来酸酐接枝乙烯-乙酸乙烯酯共聚物和色母料密炼均匀;
(2)接着加入配方量的氢氧化镁、氢氧化铝、硼酸锌、润滑剂和抗氧剂密炼均匀,出料,得到混合料;
(3)将混合料于130~150℃挤出、水冷、抽风干燥、切粒,得到粒料;
(4)将粒料与金属芯线在线缆挤出机上成型,并风冷、收卷,得到电线;
(5)将电线进行紫外光辐照,制成无卤阻燃电线;
优选地,步骤(1)中所述的密炼的条件为110~130℃密炼3~5min;
步骤(2)中所述的密炼的条件为120~140℃密炼3~5min。
步骤(5)中所述的紫外光辐照的剂量为8~14Mrad。
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CN110903539A (zh) * | 2019-12-05 | 2020-03-24 | 广东安拓普聚合物科技有限公司 | 一种光缆用紫外光辐照低烟无卤材料 |
CN112029169A (zh) * | 2020-08-18 | 2020-12-04 | 上海贝恩科电缆有限公司 | 一种高速电梯电缆料、材料制备方法及线缆制造方法 |
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CN110903539A (zh) * | 2019-12-05 | 2020-03-24 | 广东安拓普聚合物科技有限公司 | 一种光缆用紫外光辐照低烟无卤材料 |
CN112029169A (zh) * | 2020-08-18 | 2020-12-04 | 上海贝恩科电缆有限公司 | 一种高速电梯电缆料、材料制备方法及线缆制造方法 |
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