CN113450955A - 一种常规使用寿命60年的低压电力电缆 - Google Patents
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Abstract
本发明公开了一种常规使用寿命60年的低压电力电缆,包括有三角形橡胶骨架,骨架每个内角中分别设有一根动力线芯,动力线芯包括有动力线芯导体,动力线芯导体外依次包覆有低烟无卤辐照交联聚烯烃层、铜丝编织单独屏蔽层、云母层,各个动力线芯之间填充有玻璃丝耐火填充物,骨架外挤包有硅橡胶内护套,硅橡胶内护套层从内到外依次包覆有铜带编织总屏蔽层、聚烯烃外护套层。本发明采用三角形橡胶骨架,保证了电缆的牢固性、耐用性、稳定性,还采用了云母层,同时采用双层屏蔽,进一步提高耐火、抗干扰性能,进而延长其使用寿命;在低烟无卤辐照交联聚烯烃层中加入的2,6‑三级丁基‑4‑甲基苯酚还具有很好的抗老化性能,进一步延长了使用寿命。
Description
技术领域
本发明涉及电缆领域,尤其涉及一种常规使用寿命60年的低压电力电缆。
背景技术
电力电缆是用于传输和分配电能的电缆,电力电缆常用于城市地下电网、发电站引出线路、工矿企业内部供电及过江海水下输电线。在电力线路中,电缆所占比重正逐渐增加。电力电缆是在电力系统的主干线路中用以传输和分配大功率电能的电缆产品,包括1-500KV以及以上各种电压等级,各种绝缘的电力电缆;
电力电缆中包括了塑料绝缘电力电缆,其绝缘层为挤压塑料的电力电缆。常用的塑料有聚氯乙烯、聚乙烯、交联聚乙烯。塑料电缆结构简单,制造加工方便,重量轻,敷设安装方便,不受敷设落差限制。因此广泛应用作中低压电缆,并有取代粘性浸渍油纸电缆的趋势;
现有电电力缆包含电缆导体、电缆绝缘层、护套层,绝缘和护套采用橡皮绝缘和橡皮护套材料,而橡皮绝缘和护套的生产需要先炼胶,经橡胶挤出机挤出之后还需在硫化管道硫化之后才能保证其应有的机械性能,且在生产中,若工艺参数控制不好,还会出现欠硫、过硫以及导体氧化发黑等问题,诸多因素的影响,造成了电缆的生产成本大、生产周期长等问题,另外由于电缆没有骨架,其牢固性、耐用性都比较差。
发明内容
基于背景技术存在的技术问题,本发明提出了一种常规使用寿命60年的低压电力电缆。
本发明采用的技术方案是:
一种常规使用寿命60年的低压电力电缆,包括有三角形橡胶骨架,所述三角形橡胶骨架每个内角中分别设有一根动力线芯,所述动力线芯包括有动力线芯导体,所述动力线芯导体外依次包覆有低烟无卤辐照交联聚烯烃层、铜丝编织单独屏蔽层、云母层,各个所述动力线芯之间填充有玻璃丝耐火填充物,所述三角形橡胶骨架外挤包有硅橡胶内护套,硅橡胶内护套层从内到外依次包覆有铜带编织总屏蔽层、聚烯烃外护套层。
所述低烟无卤辐照交联聚烯烃层,其材料是由下述重量份的原料组成的:
高密度聚乙烯140-160、甲基丙烯酸异辛酯5-8、2,6-三级丁基-4-甲基苯酚0.9-2、耐火级氧化铝微粉20-30、硅烷偶联剂kh5500.3-0.4、环氧丙醇5-7、甲基丙烯酸甲酯8-10、甲醇钠0.1-0.2、催化剂0.1-0.2、聚酰胺蜡10-15。
所述催化剂为对甲基苯磺酸。
所述低烟无卤辐照交联聚烯烃层材料的制备方法,包括以下步骤:
(1)取2,6-三级丁基-4-甲基苯酚,加入到其重量10-15倍的无水乙醇中,搅拌均匀,加入环氧丙醇、甲基丙烯酸甲酯,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为65-70℃,加入甲醇钠,保温反应10-12小时,出料冷却,得预混料溶液;
(2)取聚酰胺蜡、催化剂混合,送入到120-130℃的油浴中,保温搅拌1-2小时,加入耐火级氧化铝微粉,继续保温搅拌10-20分钟,出料冷却,得改性耐火级氧化铝微粉;
(3)取上述改性耐火级氧化铝微粉,加入到预混料溶液中,搅拌均匀,加入硅烷偶联剂kh550,升高温度为150-160℃,保温搅拌80-100分钟,抽滤,真空干燥,得复合填料;
(4)取上述复合填料,与高密度聚乙烯、甲基丙烯酸异辛酯混合,搅拌均匀,送入到挤出机中,熔融挤出,冷却,即得。
本发明的优点是:
本发明采用三角形橡胶骨架,保证了电缆的牢固性、耐用性、稳定性,还采用了云母层,同时采用双层屏蔽,进一步提高耐火、抗干扰性能,进而延长其使用寿命;并采用低烟无卤辐照交联聚烯烃层,其耐火、阻水效果都大大提高;
本发明首先对甲基丙烯酸甲酯进行环氧化改性,然后将聚酰胺蜡进行醇解,再对耐火级氧化铝微粉进行改性,之后在碱性环境下对环氧进行交联,从而促进了耐火级氧化铝微粉在高密度聚乙烯基体间的分散性能。从而提高了成品的力学强度和综合性能;本发明以耐火级氧化铝微粉为无机填料,可以进一步提高材料的防火阻燃性能,提高使用的安全性,本发明的电缆韧性好,抗损伤性强,加入的2,6-三级丁基-4-甲基苯酚还具有很好的抗老化性能,进一步延长了使用寿命。
附图说明
图1为本发明实施例的结构示意图。
图中:三角形橡胶骨架1、动力线芯导体2、低烟无卤辐照交联聚烯烃层3、铜丝编织单独屏蔽层4、云母层5、玻璃丝耐火填充物6、硅橡胶内护套7、铜带编织总屏蔽层8、聚烯烃外护套层9。
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。
实施例1。
如图1所示,一种常规使用寿命60年的低压电力电缆,包括有三角形橡胶骨架1,三角形橡胶骨架1每个内角中分别设有一根动力线芯,动力线芯包括有动力线芯导体2,动力线芯导体2外依次包覆有低烟无卤辐照交联聚烯烃层3、铜丝编织单独屏蔽层4、云母层5,各个动力线芯之间填充有玻璃丝耐火填充物6,三角形橡胶骨架1外挤包有硅橡胶内护套7,硅橡胶内护套层7从内到外依次包覆有铜带编织总屏蔽层8、聚烯烃外护套层9。
低烟无卤辐照交联聚烯烃层,其材料是由下述重量份的原料组成的:
高密度聚乙烯160、甲基丙烯酸异辛酯8、2,6-三级丁基-4-甲基苯酚2、耐火级氧化铝微粉30、硅烷偶联剂kh5500.4、环氧丙醇7、甲基丙烯酸甲酯10、甲醇钠0.2、催化剂0.2、聚酰胺蜡15。
所述催化剂为对甲基苯磺酸。
所述低烟无卤辐照交联聚烯烃层材料的制备方法,包括以下步骤:
(1)取2,6-三级丁基-4-甲基苯酚,加入到其重量15倍的无水乙醇中,搅拌均匀,加入环氧丙醇、甲基丙烯酸甲酯,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为70℃,加入甲醇钠,保温反应12小时,出料冷却,得预混料溶液;
(2)取聚酰胺蜡、催化剂混合,送入到130℃的油浴中,保温搅拌2小时,加入耐火级氧化铝微粉,继续保温搅拌20分钟,出料冷却,得改性耐火级氧化铝微粉;
(3)取上述改性耐火级氧化铝微粉,加入到预混料溶液中,搅拌均匀,加入硅烷偶联剂kh550,升高温度为160℃,保温搅拌100分钟,抽滤,真空干燥,得复合填料;
(4)取上述复合填料,与高密度聚乙烯、甲基丙烯酸异辛酯混合,搅拌均匀,送入到挤出机中,熔融挤出,冷却,即得。
实施例2
如图1所示,一种常规使用寿命60年的低压电力电缆,包括有三角形橡胶骨架1,三角形橡胶骨架1每个内角中分别设有一根动力线芯,动力线芯包括有动力线芯导体2,动力线芯导体2外依次包覆有低烟无卤辐照交联聚烯烃层3、铜丝编织单独屏蔽层4、云母层5,各个动力线芯之间填充有玻璃丝耐火填充物6,三角形橡胶骨架1外挤包有硅橡胶内护套7,硅橡胶内护套层7从内到外依次包覆有铜带编织总屏蔽层8、聚烯烃外护套层9。
所述低烟无卤辐照交联聚烯烃层,其材料是由下述重量份的原料组成的:
高密度聚乙烯140、甲基丙烯酸异辛酯5、2,6-三级丁基-4-甲基苯酚0.9、耐火级氧化铝微粉20、硅烷偶联剂kh5500.3、环氧丙醇5、甲基丙烯酸甲酯8、甲醇钠0.1、催化剂0.1、聚酰胺蜡10。
所述催化剂为对甲基苯磺酸。
所述低烟无卤辐照交联聚烯烃层材料的制备方法,包括以下步骤:
(1)取2,6-三级丁基-4-甲基苯酚,加入到其重量10倍的无水乙醇中,搅拌均匀,加入环氧丙醇、甲基丙烯酸甲酯,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为65℃,加入甲醇钠,保温反应10小时,出料冷却,得预混料溶液;
(2)取聚酰胺蜡、催化剂混合,送入到120℃的油浴中,保温搅拌1小时,加入耐火级氧化铝微粉,继续保温搅拌10分钟,出料冷却,得改性耐火级氧化铝微粉;
(3)取上述改性耐火级氧化铝微粉,加入到预混料溶液中,搅拌均匀,加入硅烷偶联剂kh550,升高温度为150℃,保温搅拌80分钟,抽滤,真空干燥,得复合填料;
(4)取上述复合填料,与高密度聚乙烯、甲基丙烯酸异辛酯混合,搅拌均匀,送入到挤出机中,熔融挤出,冷却,即得。
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 (4)
1.一种常规使用寿命60年的低压电力电缆,其特征在于:包括有三角形橡胶骨架,所述三角形橡胶骨架每个内角中分别设有一根动力线芯,所述动力线芯包括有动力线芯导体,所述动力线芯导体外依次包覆有低烟无卤辐照交联聚烯烃层、铜丝编织单独屏蔽层、云母层,各个所述动力线芯之间填充有玻璃丝耐火填充物,所述三角形橡胶骨架外挤包有硅橡胶内护套,硅橡胶内护套层从内到外依次包覆有铜带编织总屏蔽层、聚烯烃外护套层。
2.根据权利要求1所述的一种常规使用寿命60年的低压电力电缆,其特征在于,所述低烟无卤辐照交联聚烯烃层,其材料是由下述重量份的原料组成的:
高密度聚乙烯140-160、甲基丙烯酸异辛酯5-8、2,6-三级丁基-4-甲基苯酚0.9-2、耐火级氧化铝微粉20-30、硅烷偶联剂kh5500.3-0.4、环氧丙醇5-7、甲基丙烯酸甲酯8-10、甲醇钠0.1-0.2、催化剂0.1-0.2、聚酰胺蜡10-15。
3.根据权利要求2所述的一种常规使用寿命60年的低压电力电缆,其特征在于,所述催化剂为对甲基苯磺酸。
4.根据权利要求2所述的一种常规使用寿命60年的低压电力电缆,其特征在于,所述低烟无卤辐照交联聚烯烃层材料的制备方法,包括以下步骤:
(1)取2,6-三级丁基-4-甲基苯酚,加入到其重量10-15倍的无水乙醇中,搅拌均匀,加入环氧丙醇、甲基丙烯酸甲酯,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为65-70℃,加入甲醇钠,保温反应10-12小时,出料冷却,得预混料溶液;
(2)取聚酰胺蜡、催化剂混合,送入到120-130℃的油浴中,保温搅拌1-2小时,加入耐火级氧化铝微粉,继续保温搅拌10-20分钟,出料冷却,得改性耐火级氧化铝微粉;
(3)取上述改性耐火级氧化铝微粉,加入到预混料溶液中,搅拌均匀,加入硅烷偶联剂kh550,升高温度为150-160℃,保温搅拌80-100分钟,抽滤,真空干燥,得复合填料;
(4)取上述复合填料,与高密度聚乙烯、甲基丙烯酸异辛酯混合,搅拌均匀,送入到挤出机中,熔融挤出,冷却,即得。
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