CN109971067A - 一种中压电缆用低烟无卤高阻燃隔氧层电缆料 - Google Patents

一种中压电缆用低烟无卤高阻燃隔氧层电缆料 Download PDF

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CN109971067A
CN109971067A CN201910232121.1A CN201910232121A CN109971067A CN 109971067 A CN109971067 A CN 109971067A CN 201910232121 A CN201910232121 A CN 201910232121A CN 109971067 A CN109971067 A CN 109971067A
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张斌良
龚明
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Jiangsu Xinde Molecule Material Co Ltd
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Abstract

本发明公开了一种中压电缆用低烟无卤高阻燃隔氧层电缆料,包括以下组分,配方比例按质量份数计:乙烯‑醋酸乙烯树脂20~24份,偶联剂0.4份,氢氧化镁20份,氢氧化铝48~50份,硅橡胶1.5~2份,炭黑1~2份,接枝共聚物5~6份,抗氧剂0.2~0.3份;本发明的有益效果在于,本发明的低烟无卤高阻燃隔氧层电缆料选用醋酸乙烯含量高达40%的乙烯‑醋酸乙烯树脂,能提高对阻燃粉体的包覆性,提升材料的机械性能,因此易于工厂的大批量加工;本发明选用醋酸乙烯含量高的乙烯‑醋酸乙烯树脂与阻燃粉体共混共聚后更能提高层料的阻燃性能;本发明的无卤隔氧层料提高氧指数至58%,完全能解决中压电缆的成束A类燃烧,并且能降低电缆在燃烧时烟密度,显著提高透光率至62%。

Description

一种中压电缆用低烟无卤高阻燃隔氧层电缆料
技术领域
本发明涉及电缆加工技术领域,尤其涉及一种中压电缆用低烟无卤高阻燃隔氧层电缆料。
背景技术
针对地铁用单芯中压电缆无卤阻燃隔氧层料,近年来随着经济高速发展,日新月异的城市建设离不开电缆线缆的铺设,人员密集场所如地铁、高铁、商场等更需要环保的电线电缆如聚烯烃类的无卤低烟阻燃电缆。但地铁用无卤低烟阻燃单芯普遍存在无法满足GB/T19666-2005A类成束燃烧试验,并存在烟密度大透光率小等缺陷,若需要弥补以上缺陷,则需要材料阻燃剂分量增加,但过量的阻燃剂会导致材料的机械性能下降,挤缆时的机器电流过载,挤出温度随着摩擦加温升高,使材料降解而形成气孔、溶体破裂。
但是,现有的中压电缆(型号WDZAYJY63)用无卤阻燃隔氧层料的阻燃效果不佳,氧指数不高,存在以下两个方面的不足:首先,如果提高氧指数就要增加阻燃剂的份量,从而不易于生产加工,挤出阻力大;其次,生产工艺中增加阻燃剂的份量会使挤出机螺杆摩擦温度升高,导致材料降解,形成针眼孔,也导致阻燃效果不佳及材料机械性能下降。
发明内容
1.要解决的技术问题
本发明的目的:提供一种中压电缆用低烟无卤高阻燃隔氧层电缆料,选用醋酸乙烯含量高的乙烯-醋酸乙烯树脂,与阻燃粉体聚合后更能增加对粉体的包覆性,从而提高材料的机械性能。同时醋酸乙烯含量高的树脂与氢氧化铝、氢氧化镁混合后比醋酸乙烯含量低的树脂与氢氧化铝、氢氧化镁共混后阻燃效果好。
选用的烯烃改性硅橡胶能使在填充大量阻燃剂时,原料挤出能起到润滑作用,减小挤出机的电流,使螺杆剪切段不会摩擦升温,不会对材料降解。避免了普通润滑剂在螺杆打滑造成电缆外径波动的缺陷,烯烃改性的硅橡胶里的硅氧链在燃烧时会堆积至表面形成致密的无机硅氧壳层起到隔热隔氧协效阻燃作用。
2.技术方案
为了实现上述目的,本发明的技术方案是:一种中压电缆用低烟无卤高阻燃隔氧层电缆料,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂20~24份,偶联剂0.4份,氢氧化镁20份,氢氧化铝48~50 份,烯烃改性硅橡胶1.5~2份,炭黑1~2份,接枝共聚物5~6份,抗氧剂 0.2~0.3份。
上述的高阻燃低烟无卤隔氧层料,其中,所述乙烯-醋酸乙烯树脂包括以下组分,配方比例按质量份数计:(40%醋酸乙烯)乙烯-醋酸乙烯树脂16~18份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂4~6份。
优选的是,所述(40%醋酸乙烯)乙烯-醋酸乙烯树脂的醋酸乙烯型号为日本三井40LX。
优选的是,所述(26%醋酸乙烯)乙烯-醋酸乙烯树脂的醋酸依稀型号为中国台湾台塑7470K。
优选的是,所述偶联剂为道康宁11-100偶联剂。
优选的是,所述接枝共聚物为MC312。
上述的高阻燃低烟无卤隔氧层料,其中,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂21份,偶联剂0.4份,氢氧化镁20份,氢氧化铝50份,硅橡胶2份,炭黑2份,接枝共聚物6份,抗氧剂0.25 份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂17份,(26%醋酸乙烯) 乙烯-醋酸乙烯树脂4份。
上述的高阻燃低烟无卤隔氧层料,其中,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂24份,偶联剂0.4份,氢氧化镁20份,氢氧化铝50份,硅橡胶1.6份,炭黑1份,接枝共聚物5份,抗氧剂0.3 份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂19份,(26%醋酸乙烯) 乙烯-醋酸乙烯树脂5份。
上述的高阻燃低烟无卤隔氧层料,其中,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂21份,偶联剂0.4份,氢氧化镁20份,氢氧化铝50份,硅橡胶1.8份,炭黑1.5份,接枝共聚物5.5份,抗氧剂 0.3份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂16份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂5份。
3.有益效果
综上所述,本发明的有益效果在于:
(1)本发明的无卤隔氧层料选用醋酸乙烯含量高达40%的乙烯-醋酸乙烯树脂,能增加对阻燃粉体的包覆性,提升材料的阻燃性能及机械性能,也便于挤出加工;
(2)本发明选用烯烃改性硅橡胶润滑剂能很好的改善材料在成缆时的加工性,能很好的起到协效阻燃的作用;
(3)本发明的地铁单芯缆用无卤隔氧层料提高氧指数至58%,完全能解决中压电缆(型号WDZAYJY63)的成束A类燃烧,并且能降低电缆在燃烧时烟密度,显著提高透光率至62%以上。
(4)本发明的地铁单芯缆用无卤隔氧层料是一款先进环保的无卤低烟高阻燃的优质隔氧层材料,能满足地铁等人群密集场所对电缆材料的环保及各项高性能要求。
具体实施方式
结合具体实施例进一步说明本发明的技术方案。
一种中压电缆用低烟无卤高阻燃隔氧层电缆料,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂20~24份,偶联剂0.4份,氢氧化镁20份,氢氧化铝48~50份,硅橡胶1.5~2份,炭黑1~2份,接枝共聚物5~6份,抗氧剂0.2~0.3份。
上述的低烟无卤高阻燃隔氧层电缆料,其中,所述乙烯-醋酸乙烯树脂包括以下组分,配方比例按质量份数计:(40%醋酸乙烯)乙烯-醋酸乙烯树脂16~18份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂4~6份。
优选的是,所述(40%醋酸乙烯)乙烯-醋酸乙烯树脂的醋酸乙烯型号为日本三井40LX。
优选的是,所述(26%醋酸乙烯)乙烯-醋酸乙烯树脂的醋酸依稀型号为中国台湾台塑7470K。
优选的是,所述偶联剂为道康宁11-100偶联剂。
优选的是,所述接枝共聚物为MC312。
实施例1:
一种中压电缆用低烟无卤高阻燃隔氧层电缆料,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂21份,偶联剂0.4份,氢氧化镁 20份,氢氧化铝50份,硅橡胶2份,炭黑2份,接枝共聚物6份,抗氧剂0.25份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂17份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂4份。
实施例2:
一种中压电缆用低烟无卤高阻燃隔氧层电缆料,包括以下组分,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂24份,偶联剂0.4 份,氢氧化镁20份,氢氧化铝50份,硅橡胶1.6份,炭黑1份,接枝共聚物5份,抗氧剂0.3份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂19 份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂5份。
实施例3:
一种中压电缆用低烟无卤高阻燃隔氧层电缆料,包括以下组分,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂21份,偶联剂0.4 份,氢氧化镁20份,氢氧化铝50份,硅橡胶1.8份,炭黑1.5份,接枝共聚物5.5份,抗氧剂0.3份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂16份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂5份。
以上所述仅为本发明的优选实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书内容所作的等效结构变换,或直接或间接运用附属在其他相关产品的技术领域,均同理包括在本发明的专利保护范围内。

Claims (9)

1.一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂20~24份,偶联剂0.4份,氢氧化镁20份,氢氧化铝48~50份,烯烃改性硅橡胶1.5~2份,炭黑1~2份,接枝共聚物5~6份,抗氧剂0.2~0.3份。
2.根据权利要求1所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于,所述乙烯-醋酸乙烯树脂包括以下组分,配方比例按质量份数计:(40%醋酸乙烯)乙烯-醋酸乙烯树脂16~18份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂4~6份。
3.根据权利要求2所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于:所述(40%醋酸乙烯)乙烯-醋酸乙烯树脂的醋酸乙烯型号为日本三井40LX。
4.根据权利要求2所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于:所述(26%醋酸乙烯)乙烯-醋酸乙烯树脂的醋酸依稀型号为中国台湾台塑7470K。
5.根据权利要求1所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于:所述偶联剂为道康宁11-100偶联剂。
6.根据权利要求1所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于:所述接枝共聚物为MC312。
7.根据权利要求2所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂21份,偶联剂0.4份,氢氧化镁20份,氢氧化铝50份,硅橡胶2份,炭黑2份,接枝共聚物6份,抗氧剂0.25份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂17份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂4份。
8.根据权利要求2所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂24份,偶联剂0.4份,氢氧化镁20份,氢氧化铝50份,硅橡胶1.6份,炭黑1份,接枝共聚物5份,抗氧剂0.3份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂19份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂5份。
9.根据权利要求2所述的一种中压电缆用低烟无卤高阻燃隔氧层电缆料,其特征在于,包括以下组分,配方比例按质量份数计:乙烯-醋酸乙烯树脂21份,偶联剂0.4份,氢氧化镁20份,氢氧化铝50份,硅橡胶1.8份,炭黑1.5份,接枝共聚物5.5份,抗氧剂0.3份,其中,(40%醋酸乙烯)乙烯-醋酸乙烯树脂16份,(26%醋酸乙烯)乙烯-醋酸乙烯树脂5份。
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