CN114415301A - 松套层绞式非金属加强芯铠装电缆 - Google Patents
松套层绞式非金属加强芯铠装电缆 Download PDFInfo
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Abstract
本发明涉及松套层绞式非金属加强芯铠装电缆,属于电缆技术领域,该电缆包括光纤、松套管、中心加强芯和外护套,松套管内装有光纤,松套管内填充有阻水油膏,松套管粘接在中心加强芯表面,松套管和中心加强芯绞合后外设有外护套;外护套由阻燃聚烯烃护套料制成,满足外护套的阻燃需求。阻燃聚烯烃护套料中以白炭黑、纳米镁铝水滑石、阻燃助剂为阻燃成分,纳米镁铝水滑石兼具了氢氧化镁和氢氧化铝的优点,具有阻燃、消烟和填充的作用,白炭黑作为协效剂,与纳米镁铝水滑石一起形成一层致密的保护炭层,这个炭层不仅能阻止热量从外界向聚合物内部传递,还阻碍了熔融、降解的聚合物向表面转移的过程从而起到了较好的阻燃作用。
Description
技术领域
本发明属于电缆技术领域,具体地,涉及松套层绞式非金属加强芯铠装电缆。
背景技术
层绞式光缆是由多根松套管及可能有的填充绳围绕中心加强件绞合,然后在绞合体外包扎纱类物质形成缆芯,使缆芯结构稳定,然后在缆芯包再包覆保护层形成层绞式光缆,在缆芯间隙中填充或不填充阻水物质。层绞式光缆外护套常用聚烯烃材料,在阻燃、耐热方面的性能有所欠缺,为满足其阻燃性能,需要大量加入无机阻燃剂,致使材料的力学性能大幅度下降而不能满足要求。
发明内容
本发明的目的在于提供松套层绞式非金属加强芯铠装电缆,解决了现有技术中存在的问题。
本发明的目的可以通过以下技术方案实现:
本发明为松套层绞式非金属加强芯铠装电缆,包括光纤、松套管、中心加强芯和外护套,松套管内装有光纤,松套管内填充有阻水油膏,松套管粘接在中心加强芯表面,松套管和中心加强芯绞合后外设有外护套;外护套由阻燃聚烯烃护套料制成;
阻燃聚烯烃护套料通过如下步骤制备:
按照重量份将聚乙烯树脂60-90份、乙烯-醋酸乙烯共聚物10-20份、碳纤维6-8份、白炭黑10-15份、纳米镁铝水滑石18-20份、阻燃助剂1-3份、抗氧剂0.1-0.5份、润滑剂0.5-0.9份,加入密炼机中,混炼至物料温度为120-130℃,然后冷却至75-82℃,得到冷却物料,装入挤出机中挤出造粒,得到阻燃聚烯烃护套料。
进一步地,润滑剂选择硬脂酸;
抗氧剂选择抗氧剂1010;
纳米镁铝水滑石的平均粒径为50nm;
乙烯-醋酸乙烯共聚物中醋酸乙烯的含量为15-20%。
进一步地,阻燃助剂通过如下步骤制备:
在温度为50℃、氮气保护条件,将不饱和磷酸酯单体和甲苯混合,加入卡斯特催化剂搅拌50min,然后加入三乙氧基硅烷,加完后升温至70℃,搅拌反应48h,反应结束后过滤,将得到的滤液减压浓缩,除去溶剂,得到阻燃助剂。其中,不饱和磷酸酯单体、卡斯特催化剂、三乙氧基硅烷的用量质量比为4.6:0.2:1.5;甲苯作为溶剂。
进一步地,不饱和磷酸酯单体通过如下步骤制备:
将季戊四醇磷酸酯、二氯甲烷和三乙胺混合,在温度为-5℃条件下,边搅拌边加入丙烯酰氯,加完后,在0℃条件下,搅拌反应10h,反应结束后,经过水洗除盐后,减压浓缩除去溶剂得到不饱和磷酸酯单体。其中,季戊四醇磷酸酯、丙烯酰氯、二氯甲烷和三乙胺的用量比为5g:2.5mL:25mL:4.2mL。
本发明的有益效果:
本发明中松套层绞式非金属加强芯铠装电缆包括光纤、松套管、中心加强芯和外护套,其外护套为阻燃聚烯烃护套料制备得到,满足外护套的阻燃需求。
阻燃聚烯烃护套料中以白炭黑、纳米镁铝水滑石、阻燃助剂为阻燃成分,纳米镁铝水滑石兼具了氢氧化镁和氢氧化铝的优点,具有阻燃、消烟和填充的作用,水滑石作为填充型阻燃剂,会存在分散性差、表面能高、易团聚、相容剂差等问题,通过加入的阻燃助剂改善分散效果,提高材料的力学性能。白炭黑作为协效剂,聚合物分子链与白炭黑孔隙间的缠结作用促进了熔体黏度的增加,从而降低了降解产物的扩散速度,在燃烧的过程中趋向于聚集在熔化的聚合物熔体的表面,与纳米镁铝水滑石一起形成一层致密的保护炭层,这个炭层不仅能阻止热量从外界向聚合物内部传递,还阻碍了熔融、降解的聚合物向表面转移的过程从而起到了较好的阻燃作用。
碳纤维、炭黑以及纳米镁铝水滑石作为增强填料,其中碳纤维的作用是当基体受到外来的负荷或能量时,负载沿着碳纤维向四周传递,应力被迅速地扩散了,从而阻止了裂纹的增长,具有增韧和抗冲击的作用。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明松套层绞式非金属加强芯铠装电缆的截面结构示意图。
附图中,各标号所代表的部件列表如下:
1、光纤;2、松套管;3、中心加强芯;4、外护套。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
请参阅图1所示,本发明为松套层绞式非金属加强芯铠装电缆,包括光纤1、松套管2、中心加强芯3和外护套4,松套管2内装有光纤1,松套管2内填充有阻水油膏,松套管2粘接在中心加强芯3表面,松套管2和中心加强芯3绞合后外设有外护套4;外护套4由阻燃聚烯烃护套料制成;
实施例1
制备不饱和磷酸酯单体:
将季戊四醇磷酸酯、二氯甲烷和三乙胺混合,在温度为-5℃条件下,边搅拌边加入丙烯酰氯,加完后,在0℃条件下,搅拌反应10h,反应结束后,经过水洗除盐后,减压浓缩除去溶剂得到不饱和磷酸酯单体。其中,季戊四醇磷酸酯、丙烯酰氯、二氯甲烷和三乙胺的用量比为5g:2.5mL:25mL:4.2mL。
实施例2
制备阻燃助剂:
在温度为50℃、氮气保护条件,将实施例1制得的不饱和磷酸酯单体和甲苯混合,加入卡斯特催化剂搅拌50min,然后加入三乙氧基硅烷,加完后升温至70℃,搅拌反应48h,反应结束后过滤,将得到的滤液减压浓缩,除去溶剂,得到阻燃助剂。其中,不饱和磷酸酯单体、卡斯特催化剂、三乙氧基硅烷的用量质量比为4.6:0.2:1.5;甲苯作为溶剂。
实施例3
制备阻燃聚烯烃护套料:
按照重量份将聚乙烯树脂60份、乙烯-醋酸乙烯共聚物10份、碳纤维6份、白炭黑10份、纳米镁铝水滑石18份、实施例2制得的阻燃助剂1份、抗氧剂0.1份、润滑剂0.5份,加入密炼机中,混炼至物料温度为120℃,然后冷却至75℃,得到冷却物料,装入挤出机中挤出造粒,得到阻燃聚烯烃护套料。润滑剂选择硬脂酸,抗氧剂选择抗氧剂1010;纳米镁铝水滑石的平均粒径为50nm;乙烯-醋酸乙烯共聚物中醋酸乙烯的含量为15%。
实施例4
制备阻燃聚烯烃护套料:
按照重量份将聚乙烯树脂80份、乙烯-醋酸乙烯共聚物15份、碳纤维7份、白炭黑12份、纳米镁铝水滑石18-20份、实施例2制得的阻燃助剂2份、抗氧剂0.3份、润滑剂0.7份,加入密炼机中,混炼至物料温度为125℃,然后冷却至80℃,得到冷却物料,装入挤出机中挤出造粒,得到阻燃聚烯烃护套料。润滑剂选择硬脂酸,抗氧剂选择抗氧剂1010;纳米镁铝水滑石的平均粒径为50nm;乙烯-醋酸乙烯共聚物中醋酸乙烯的含量为18%。
实施例5
制备阻燃聚烯烃护套料:
按照重量份将聚乙烯树脂90份、乙烯-醋酸乙烯共聚物20份、碳纤维8份、白炭黑15份、纳米镁铝水滑石20份、实施例2制得的阻燃助剂3份、抗氧剂0.5份、润滑剂0.9份,加入密炼机中,混炼至物料温度为130℃,然后冷却至82℃,得到冷却物料,装入挤出机中挤出造粒,得到阻燃聚烯烃护套料。润滑剂选择硬脂酸,抗氧剂选择抗氧剂1010;纳米镁铝水滑石的平均粒径为50nm;乙烯-醋酸乙烯共聚物中醋酸乙烯的含量为20%。
对比例1
与实施例3相比不添加阻燃助剂,其余原料及制备过程保持不变。
对比例2
与实施例3相比,将阻燃助剂换成γ-氨丙基三乙氧基硅烷,其余原料及制备过程保持不变。
对实施例3-5和对比例1-2制得的样品按照标准GB/T2406-1993制得尺寸为150mm×6.5mm×3mm试样测量材料极限氧指数;按照标准GB/T1040-92标准制样,以拉伸速度为50mm/min测量材料力学性能。
表1
实施例3 | 实施例4 | 实施例5 | 对比例1 | 对比例2 | |
极限氧指数/% | 38.2 | 38.1 | 37.8 | 29.5 | 31.3 |
拉伸强度/MPa | 22.1 | 22.2 | 22.0 | 11.9 | 21.6 |
断裂伸长率/% | 285 | 284 | 283 | 251 | 282 |
从上表1可知,本发明制得的阻燃聚烯烃护套料具有良好的阻燃性和力学性能。
在说明书的描述中,参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上内容仅仅是对本发明的构思所作的举例和说明,所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,只要不偏离发明的构思或者超越本权利要求书所定义的范围,均应属于本发明的保护范围。
Claims (6)
1.松套层绞式非金属加强芯铠装电缆,包括外护套(4);其特征在于,外护套(4)由阻燃聚烯烃护套料制成;
阻燃聚烯烃护套料通过如下步骤制备:
按照重量份配比将聚乙烯树脂、乙烯-醋酸乙烯共聚物、碳纤维、白炭黑、纳米镁铝水滑石、阻燃助剂、抗氧剂和润滑剂,加入密炼机中,混炼至物料温度为120-130℃,然后冷却至75-82℃,得到冷却物料,装入挤出机中挤出造粒,得到阻燃聚烯烃护套料。
2.根据权利要求1所述的松套层绞式非金属加强芯铠装电缆,其特征在于,阻燃助剂通过如下步骤制备:
在温度为50℃、氮气保护条件,将不饱和磷酸酯单体和甲苯混合,加入卡斯特催化剂搅拌50min,然后加入三乙氧基硅烷,加完后升温至70℃,搅拌反应48h,反应结束后过滤,将得到的滤液减压浓缩,除去溶剂,得到阻燃助剂。
3.根据权利要求2所述的松套层绞式非金属加强芯铠装电缆,其特征在于,不饱和磷酸酯单体通过如下步骤制备:
将季戊四醇磷酸酯、二氯甲烷和三乙胺混合,在温度为-5℃条件下,边搅拌边加入丙烯酰氯,加完后,在0℃条件下,搅拌反应10h,反应结束后,经过水洗除盐后,减压浓缩除去溶剂得到不饱和磷酸酯单体。
4.根据权利要求1所述的松套层绞式非金属加强芯铠装电缆,其特征在于,按重量份计聚乙烯树脂60-90份、乙烯-醋酸乙烯共聚物10-20份、碳纤维6-8份、白炭黑10-15份、纳米镁铝水滑石18-20份、阻燃助剂1-3份、抗氧剂0.1-0.5份、润滑剂0.5-0.9份。
5.根据权利要求1所述的松套层绞式非金属加强芯铠装电缆,其特征在于,润滑剂选择硬脂酸,抗氧剂选择抗氧剂1010。
6.根据权利要求1所述的松套层绞式非金属加强芯铠装电缆,其特征在于,纳米镁铝水滑石的平均粒径为50nm。
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