CN107987405A - 一种柔性矿物阻燃绝缘碳纤维电缆 - Google Patents
一种柔性矿物阻燃绝缘碳纤维电缆 Download PDFInfo
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Abstract
本发明提供一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30‑50份、偶联剂10‑30份、硬脂酸5‑10份、己二酸二辛酯10‑20份、增韧剂5‑8份、抗老化剂2‑5份、氧化锌2‑5份、云母粉3‑8份、石英粉3‑8份、纳米二氧化硅2‑5份、纳米碳酸钙2‑5份、炭黑2‑6份、陶瓷纤维2‑5份、促进剂0.1‑0.2份。本发明以多根碳纤维加捻成股得到缆芯,缆芯外设置保护套,保护套内添加矿物质及其他功能助剂,进而使得本发明的碳纤维电缆具备优异的耐高温、耐低温、阻燃等性能。
Description
技术领域
本发明属于电缆材料技术领域,具体涉及一种柔性矿物阻燃绝缘碳纤维电缆。
背景技术
随着电力行业的发展,对输电导线的线芯和保护套的要求也越来越高。20世纪90年代,日本学者研究用碳纤维芯代替钢芯,开发了一种新型复合材料合成导线,即碳纤维芯铝绞线(ACFR),这种新型导线与常规ACSR导线相比,具有重量轻、线膨胀系数小、弧度特性良好,此后,碳纤维线芯得到了发展应用。但现有技术中的碳纤维电缆因护套防护性能差,导致碳纤维电缆一般存在低温下柔性差、阻燃绝缘等综合性能差的问题。
发明内容
基于以上现有技术,本发明的目的在于提供一种柔性矿物阻燃绝缘碳纤维电缆,以多根碳纤维加捻成股得到缆芯,缆芯外设置保护套,保护套内添加矿物质及其他功能助剂,进而使得碳纤维电缆具备优异的耐高温、耐低温及低温下柔软性、阻燃等性能。
为了实现以上目的,本发明采用的技术方案为:
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30-50份、偶联剂10-30份、硬脂酸5-10份、己二酸二辛酯10-20份、增韧剂5-8份、抗老化剂2-5份、氧化锌2-5份、云母粉3-8份、石英粉3-8份、纳米二氧化硅2-5份、纳米碳酸钙2-5份、炭黑2-6份、陶瓷纤维2-5份、促进剂0.1-0.2份。
优选地,所述纳米二氧化硅和纳米碳酸钙的粒径为50-100nm。
优选地,所述云母粉和石英粉的粒径为100-300nm。
优选地,所述促进剂包括促进剂CZ和促进剂TMTD,促进剂CZ和促进剂TMTD的质量份数比为1:1。
优选地,所述陶瓷纤维的纤维长度为1.0-3.5毫米,陶瓷纤维的直径为3.0-8.0微米。
优选地,所述每根碳纤维的四周还包覆有玻璃纤维,且每根碳纤维和玻璃纤维的张力为0.3至0.4kg。
优选地,所述每根碳纤维外还设置有绝缘套。
优选地,所述保护套的平均厚度为2.5mm。
优选地,所述保护套的耐火度大于1200℃,耐低温性能达-60℃。
本发明的保护套为电缆提供高温阻燃及低温防护,其中保护套的组分作用机理为:
本发明的保护套以三元乙丙橡胶为基料,三元乙丙橡胶具有优异的电绝缘性和强度,保证了电缆的绝缘性和抗拉伸性;基料中加入硬脂酸作为活化剂,配合己二酸二辛酯共同作用,使得保护套良好的低温柔软性,并且能够改善保护套的回弹性,降低压缩永久变形,成品电缆弯曲半径小,为电缆直径的4-6倍。基料中加入矿物质成分云母粉和石英粉,云母粉和石英粉起到隔氧阻燃的作用,且增强了保护套的耐高温性能;基料中加入纳米二氧化硅、纳米碳酸钙和炭黑,增强了保护套的耐磨性能。基料中还加入陶瓷纤维,陶瓷纤维是一种纤维状轻质耐火材料,具有重量轻、耐高温、热稳定性好、导热率低、比热容小及耐机械震动等优点,主要化学成分为硅酸铝,陶瓷纤维的加入赋予保护套抗腐蚀、高强度、阻燃、耐高温等性能,耐火性能优良,而且无毒、无害、环保。通过上述组分的共同作用,使得本发明的电缆耐高温性能优异,耐火度大于1200℃,耐低温性能达-60℃,且低温下保护套的柔软度高。
综上所述,与现有技术相比,本发明具有的有益效果为:
1.本发明的柔性矿物绝缘碳纤维电缆耐高温性能以阻燃性能优异,耐火度大于1200℃。
2.本发明的柔性矿物绝缘碳纤维电缆耐低温性能达-60℃,工作温度范围宽,且在低温下仍能保持一定的软度。
3.本发明的柔性矿物绝缘碳纤维电缆耐老化、耐磨损,使用寿命长。
具体实施方式
下面结合具体实施例对本发明作进一步详细说明。
实施例1
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶40份、偶联剂20份、硬脂酸8份、己二酸二辛酯15份、增韧剂6份、抗老化剂4份、氧化锌3份、云母粉5份、石英粉5份、纳米二氧化硅4份、纳米碳酸钙4份、炭黑5份、陶瓷纤维4份、促进剂CZ0.06份和促进剂TMTD 0.06份。
实施例2
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶50份、偶联剂30份、硬脂酸10份、己二酸二辛酯10份、增韧剂8份、抗老化剂3份、氧化锌4份、云母粉8份、石英粉6份、纳米二氧化硅5份、纳米碳酸钙2份、炭黑6份、陶瓷纤维5份、促进剂CZ 0.1份和促进剂TMTD 0.1份。
实施例3
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30份、偶联剂10份、硬脂酸5份、己二酸二辛酯12份、增韧剂5份、抗老化剂2份、氧化锌2份、云母粉3份、石英粉3份、纳米二氧化硅2份、纳米碳酸钙2份、炭黑2份、陶瓷纤维2份、促进剂CZ0.05份和促进剂TMTD 0.05份。
对比例1
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30份、偶联剂10份、硬脂酸5份、己二酸二辛酯12份、增韧剂5份、抗老化剂2份、氧化锌2份、云母粉3份、石英粉3份、纳米二氧化硅2份、纳米碳酸钙2份、炭黑2份、促进剂CZ 0.05份和促进剂TMTD 0.05份。
对比例2
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30份、偶联剂10份、硬脂酸5份、己二酸二辛酯12份、增韧剂5份、抗老化剂2份、氧化锌2份、纳米二氧化硅2份、纳米碳酸钙2份、炭黑2份、陶瓷纤维2份、促进剂CZ 0.05份和促进剂TMTD0.05份。
对比例3
一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30份、偶联剂10份、硬脂酸5份、增韧剂5份、抗老化剂2份、氧化锌2份、云母粉3份、石英粉3份、纳米二氧化硅2份、纳米碳酸钙2份、炭黑2份、陶瓷纤维2份、促进剂CZ 0.05份和促进剂TMTD 0.05份。
对以上述实施例1至3及对比例1至3的配方制得的柔性矿物阻燃绝缘碳纤维电缆进行抗拉伸强度、阻燃性以及不同温度下的柔性进行测试,测试结果如下表1所示。
表1柔性矿物阻燃绝缘碳纤维电缆性能测试结果
由上述测试结果可知,本发明的实施例1至3制得的柔性矿物阻燃绝缘碳纤维电缆拉伸强度大,且阻燃性能优异,并且与对比例2相比,在保护套组分中不掺加云母粉和石英粉时,电缆的阻燃性能明显降低,证明云母粉和石英粉矿物组分的加入增强了电缆的防火阻燃性能。本发明的实施例1至3制得的柔性矿物阻燃绝缘碳纤维电缆在常温下具有优异的柔性,在6倍直径下弯曲试验,性能稳定运行正常;并且在-60℃的低温下,仍能保持4倍直径下弯曲试验,性能稳定运行正常,证明本发明的碳纤维电缆在低温下仍能保持一定的柔软度,解决了现有技术中电缆在低温下变硬、变脆,无法正常使用的问题。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (9)
1.一种柔性矿物阻燃绝缘碳纤维电缆,包括缆芯和保护套,其特征在于,所述缆芯由多根碳纤维加捻成股得到;所述保护套套设在缆芯外,保护套的组分及质量份数配比为:三元乙丙橡胶30-50份、偶联剂10-30份、硬脂酸5-10份、己二酸二辛酯10-20份、增韧剂5-8份、抗老化剂2-5份、氧化锌2-5份、云母粉3-8份、石英粉3-8份、纳米二氧化硅2-5份、纳米碳酸钙2-5份、炭黑2-6份、陶瓷纤维2-5份、促进剂0.1-0.2份。
2.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述纳米二氧化硅和纳米碳酸钙的粒径为50-100nm。
3.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述云母粉和石英粉的粒径为100-300nm。
4.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述促进剂包括促进剂CZ和促进剂TMTD,促进剂CZ和促进剂TMTD的质量份数比为1:1。
5.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述陶瓷纤维的纤维长度为1.0-3.5mm,陶瓷纤维的直径为3.0-8.0μm。
6.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述每根碳纤维的四周还包覆有玻璃纤维,且每根碳纤维和玻璃纤维的张力为0.3至0.4kg。
7.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述每根碳纤维外还设置有绝缘套。
8.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述保护套的平均厚度为2.5mm。
9.根据权利要求1所述的柔性矿物阻燃绝缘碳纤维电缆,其特征在于,所述碳纤维电缆的耐火度大于1200℃,耐低温性能达-60℃。
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