CN110517817A - 一种耐火阻燃型电力电缆 - Google Patents
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Abstract
本发明公开了一种耐火阻燃型电力电缆,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料包括:聚乙烯、乙烯‑醋酸乙烯共聚物、金刚烷膨胀阻燃剂、成炭剂、抑烟剂、偶联剂、抗氧剂。金刚烷膨胀阻燃剂采用如下工艺制备:将金刚烷二醇加入有机溶剂中,升温搅拌溶解,滴加三氯氧磷回流反应后,再滴加乙二胺搅拌反应制得金刚烷膨胀阻燃剂。本发明耐火阻燃型电力电缆的氧指数高、发烟量小,阻燃性能优异,力学性能好。
Description
技术领域
本发明涉及电缆材料技术领域,尤其涉及一种耐火阻燃型电力电缆。
背景技术
电线电缆行业是中国仅次于汽车行业的第二大行业,产品品种满足率和国内市场占有率均超过90%。在世界范围内,中国电线电缆总产值已超过美国,成为世界上第一大电线电缆生产国。伴随着中国电线电缆行业高速发展,新增企业数量不断上升,行业整体技术水平得到大幅提高。
电力电缆的基本结构由线芯(导体)、绝缘层、屏蔽层和保护层四部分组成,其中绝缘层是包覆在导线外围四周起着电气绝缘作用的构件,即能确保传输的电流或电磁波、光波只沿着导线行进而不流向外面,导体上具有的电位(即对周围物体形成的电位差、即电压)能被隔绝,即既要保证导线的正常传输功能,又要确保外界物体和人身的安全,其主要材料为PVC、PE、XLPE、聚丙烯PP、氟塑料F、橡胶、纸、云母带等;保护层是保护电力电缆免受外界杂质和水分的侵入,以及防止外力直接损坏电力电缆,其主要材料为PVC、PE、橡胶、铝、钢带等。以高分子聚合物为绝缘层和保护层主要材料的电力电缆材料具有易燃烧的缺点,安全性能差,不能满足人满需求。
发明内容
基于背景技术存在的技术问题,本发明提出了一种耐火阻燃型电力电缆,氧指数高、发烟量小,阻燃性能优异,力学性能好。
本发明提出一种耐火阻燃型电力电缆,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料按重量份包括:聚乙烯50-60份,乙烯-醋酸乙烯共聚物40-50份,金刚烷膨胀阻燃剂10-20份,成炭剂3-6份,抑烟剂2-4份,偶联剂1-5份,抗氧剂0.5-1.5份。
优选地,金刚烷膨胀阻燃剂采用如下工艺制备:将金刚烷二醇加入有机溶剂中,升温至70-80℃搅拌溶解,滴加三氯氧磷回流反应2.5-4.5h后,降温至20-30℃,再滴加乙二胺搅拌反应2-4h后,去除溶剂,经过滤、干燥工艺制得金刚烷膨胀阻燃剂。
优选地,金刚烷二醇、三氯氧磷及乙二胺的摩尔比为2-3:2-3:4-6。
优选地,有机溶剂为氯仿、1,4-二氧六环、四氢呋喃中的一种。
优选地,成炭剂为含季戊四醇基烷基次膦酸盐成炭剂。
优选地,抑烟剂为纳米铁酸锌和有机硅粉。
优选地,偶联剂为硅烷偶联剂。
优选地,抗氧剂为抗氧剂1076和/或抗氧剂TNP。
本发明中以金刚烷膨胀阻燃剂、成炭剂、抑烟剂组成电力电缆外护层材料的阻燃体系,金刚烷膨胀阻燃剂具有磷酰胺结构,热稳定性高,具有丰富的炭源和较高的磷含量高,阻燃性能好;成炭剂和抑烟剂作为协效剂,可有效提高炭层的厚度和强度,降低燃烧生烟量,进一步提高电力电缆外护层材料的阻燃性能和安全性能;本发明还加入了偶联剂、抗氧化剂配合阻燃剂体系,改善阻燃体系与聚乙烯、乙烯-醋酸乙烯共聚物的相容性,提高电力电缆外护层材料的力学性能。本发明中各组分相互配合制得耐火阻燃型电力电缆的阻燃性能优异,力学性能好,可满足人满需求。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种耐火阻燃型电力电缆,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料按重量份包括:聚乙烯50份,乙烯-醋酸乙烯共聚物50份,金刚烷膨胀阻燃剂10份,含季戊四醇基烷基次膦酸盐成炭剂6份,纳米铁酸锌2份,有机硅粉2份,硅烷偶联剂1份,抗氧剂1076 0.5份。
金刚烷膨胀阻燃剂采用如下工艺制备:按摩尔比为1:1:2分别称取金刚烷二醇、三氯氧磷及乙二胺,将金刚烷二醇加入氯仿、1,4-二氧六环、四氢呋喃中,升温至70℃搅拌溶解,滴加三氯氧磷回流反应2.5h后,降温至20℃,再滴加乙二胺搅拌反应2h后,去除溶剂,经过滤、干燥工艺制得金刚烷膨胀阻燃剂。
实施例2
一种耐火阻燃型电力电缆,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料按重量份包括:聚乙烯60份,乙烯-醋酸乙烯共聚物40份,金刚烷膨胀阻燃剂20份,含季戊四醇基烷基次膦酸盐成炭剂3份,纳米铁酸锌1份,有机硅粉1份,硅烷偶联剂5份,抗氧剂TNP 1.5份。
金刚烷膨胀阻燃剂采用如下工艺制备:按摩尔比为1:1:3分别称取金刚烷二醇、三氯氧磷及乙二胺,将金刚烷二醇加入氯仿、1,4-二氧六环、四氢呋喃中,升温至80℃搅拌溶解,滴加三氯氧磷回流反应4.5h后,降温至30℃,再滴加乙二胺搅拌反应4h后,去除溶剂,经过滤、干燥工艺制得金刚烷膨胀阻燃剂。
实施例3
一种耐火阻燃型电力电缆,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料按重量份包括:聚乙烯55份,乙烯-醋酸乙烯共聚物45份,金刚烷膨胀阻燃剂15份,含季戊四醇基烷基次膦酸盐成炭剂4.5份,纳米铁酸锌2份,有机硅粉2份,硅烷偶联剂3份,抗氧剂1076 1.0份。
金刚烷膨胀阻燃剂采用如下工艺制备:按摩尔比为3:3:4分别称取金刚烷二醇、三氯氧磷及乙二胺,将金刚烷二醇加入氯仿、1,4-二氧六环、四氢呋喃中,升温至75℃搅拌溶解,滴加三氯氧磷回流反应3.5h后,降温至25℃,再滴加乙二胺搅拌反应3h后,去除溶剂,经过滤、干燥工艺制得金刚烷膨胀阻燃剂。
实施例4
一种耐火阻燃型电力电缆,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料按重量份包括:聚乙烯52份,乙烯-醋酸乙烯共聚物48份,金刚烷膨胀阻燃剂18份,含季戊四醇基烷基次膦酸盐成炭剂4份,纳米铁酸锌1份,有机硅粉3份,硅烷偶联剂2.5份,抗氧剂TNP 1.2份。
金刚烷膨胀阻燃剂采用如下工艺制备:按摩尔比为2:3:6分别称取金刚烷二醇、三氯氧磷及乙二胺,将金刚烷二醇加入氯仿、1,4-二氧六环、四氢呋喃中,升温至72℃搅拌溶解,滴加三氯氧磷回流反应4.0h后,降温至24℃,再滴加乙二胺搅拌反应3.5h后,去除溶剂,经过滤、干燥工艺制得金刚烷膨胀阻燃剂。
以未加金刚烷膨胀阻燃剂、成炭剂、抑烟剂的本发明电力电缆外护层复合材料作为对比组,同实施例1-4制得耐火阻燃型电力电缆的阻燃外护层经阻燃和力学性能测试测得数据如下表1。
表1
通过上表1的测试数据可知:相比对比组,本发明实施例1-4制得电力电缆外护层复合材料的垂直燃烧等级、氧指数均有提高,发烟量减少,显著提高外护层的阻燃性能;对拉伸强度和缺口冲击强度影响较小。通过分析可知耐火阻燃型电力电缆的氧指数高、发烟量小,阻燃性能优异,力学性能好,可满足需求。
以上所述,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 (8)
1.一种耐火阻燃型电力电缆,其特征在于,包括导线、绝缘层、屏蔽层、阻燃外护层,所述阻燃外护层原料按重量份包括:聚乙烯50-60份,乙烯-醋酸乙烯共聚物40-50份,金刚烷膨胀阻燃剂10-20份,成炭剂3-6份,抑烟剂2-4份,偶联剂1-5份,抗氧剂0.5-1.5份。
2.根据权利要求1所述耐火阻燃型电力电缆,其特征在于,金刚烷膨胀阻燃剂采用如下工艺制备:将金刚烷二醇加入有机溶剂中,升温至70-80℃搅拌溶解,滴加三氯氧磷回流反应2.5-4.5h后,降温至20-30℃,再滴加乙二胺搅拌反应2-4h后,去除溶剂,经过滤、干燥工艺制得金刚烷膨胀阻燃剂。
3.根据权利要求2所述耐火阻燃型电力电缆,其特征在于,金刚烷二醇、三氯氧磷及乙二胺的摩尔比为2-3:2-3:4-6。
4.根据权利要求2所述耐火阻燃型电力电缆,其特征在于,有机溶剂为氯仿、1,4-二氧六环、四氢呋喃中的一种。
5.根据权利要求2所述耐火阻燃型电力电缆,其特征在于,成炭剂为含季戊四醇基烷基次膦酸盐成炭剂。
6.根据权利要求1所述耐火阻燃型电力电缆,其特征在于,抑烟剂为纳米铁酸锌和有机硅粉。
7.根据权利要求1所述耐火阻燃型电力电缆,其特征在于,偶联剂为硅烷偶联剂。
8.根据权利要求1所述耐火阻燃型电力电缆,其特征在于,抗氧剂为抗氧剂1076和/或抗氧剂TNP。
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CN117976313A (zh) * | 2024-03-31 | 2024-05-03 | 天津市天鸿祥线缆有限公司 | 一种高阻燃、耐腐蚀的电力电缆及其制备方法 |
CN117976313B (zh) * | 2024-03-31 | 2024-06-11 | 天津市天鸿祥线缆有限公司 | 一种高阻燃、耐腐蚀的电力电缆及其制备方法 |
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