CN103524898B - 一种核级电缆护套料 - Google Patents

一种核级电缆护套料 Download PDF

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CN103524898B
CN103524898B CN201310474645.4A CN201310474645A CN103524898B CN 103524898 B CN103524898 B CN 103524898B CN 201310474645 A CN201310474645 A CN 201310474645A CN 103524898 B CN103524898 B CN 103524898B
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倪昭华
赵成刚
尹沾松
谢世平
张冰莹
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Abstract

一种核级电缆护套料，由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物30-50份；乙丙橡胶50-70份；硅橡胶5-10份；氢氧化镁70-90份；氮化硼5-10份；抗氧剂4-12份。本发明核级电缆护套料在90℃温度下使用60年以后再施加2400KGy的辐射剂量，护套层无剥落，阻燃效率高，添加量小，分散均匀，不会发生团聚，在满足材料力学性能的同时，能通过单根垂直燃烧（成束B类）试验。

Description

一种核级电缆护套料
技术领域
本发明涉及一种核电站用的电缆护套料。
背景技术
2012年10月24日，国务院总理温家宝主持召开国务院常务会议，再次讨论并通过《核电安全规划(2011-2020年)》和《核电中长期发展规划(2011-2020年)》。该次国务院常务会议称，在建设节奏上要“合理把握”、“稳步推进”，“稳妥恢复正常建设”，在准入门槛上，“新建核电机组必须符合三代安全标准”，“按照全球最高安全要求新建核电项目。”
氢氧化镁具有阻燃、阻滴、销烟、高效促进基材成炭等特性，是常用的阻燃剂。但是氢氧化镁粉体表面极性大，初始颗粒由于其静电力的相互作用，粒子之间以固相桥相连趋向于聚集成团，形成较大的二次团聚颗粒，难以均匀分散，与高分子基料的相容性也较差。另外氢氧化镁的热分解吸热量小于高分子基料的燃烧热，导致填充量很大，复合材料的力学性能下降。
发明内容
本发明要解决的技术问题在于：提供一种核电站用的电缆护套料，其在90℃温度下使用60年以后再施加2400KGy的辐射剂量，护套层无剥落。磷酸镁铵包覆氢氧化镁阻燃效率高，添加量小，分散均匀，不会发生团聚，在满足材料力学性能的同时，能通过单根垂直燃烧(成束B类)试验。
为了解决上述技术问题，本发明提出以下技术方案：一种核级电缆护套料，由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物30-50份；乙丙橡胶50-70份；硅橡胶5-10份；氢氧化镁70-90份；氮化硼5-10份；抗氧剂4-12份。
上述技术方案的进一步限定在于：所述的氢氧化镁为磷酸镁铵包覆氢氧化镁。
上述技术方案的进一步限定在于：所述抗氧剂为四(β-(3,5-二叔丁基-4-羟基苯基)丙酸)季戊四醇酯与4,4'-硫代双(6-叔丁基-3-甲基苯酚)按照1：1混配而成。
上述技术方案的进一步限定在于：该核级电缆护套料由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物30份；乙丙橡胶50份；硅橡胶5份；氢氧化镁90份；氮化硼5份；抗氧剂4份。
上述技术方案的进一步限定在于：该核级电缆护套料由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物50份；乙丙橡胶50份；硅橡胶10份；氢氧化镁70份；氮化硼10份；抗氧剂12份。
上述技术方案的进一步限定在于：该核级电缆护套料由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物40份；乙丙橡胶60份；硅橡胶7份；氢氧化镁80份；氮化硼8份；抗氧剂8份。
与现有技术相比，本发明具有以下有益效果：
1、90℃温度下使用60年以后，再施加2400KGy的辐射剂量，护套层无剥落。
2、磷酸镁铵包覆氢氧化镁阻燃剂，含有磷氮和金属氧化物，阻燃效率高，添加量小，分散均匀，不会发生团聚，在满足材料力学性能的同时，能通过单根垂直燃烧(成束B类)试验。
具体实施方式
本发明提出一种核级电缆护套料，其由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物30-50份；乙丙橡胶50-70份；硅橡胶5-10份；氢氧化镁70-90份；氮化硼5-10份；抗氧剂4-12份。
所述的氢氧化镁为磷酸镁铵包覆氢氧化镁。
所述抗氧剂为四(β-(3,5-二叔丁基-4-羟基苯基)丙酸)季戊四醇酯与4,4'-硫代双(6-叔丁基-3-甲基苯酚)按照1：1混配而成。
上述核级电缆护套料的制备方法包括以下步骤：
步骤1：取乙烯-醋酸乙烯酯共聚物30-50份；乙丙橡胶50-70份；硅橡胶5-10份；氢氧化镁70-90份；氮化硼5-10份；抗氧剂4-12份；
步骤2：通过密炼混炼造粒或者平行双螺杆挤出机混炼造粒，得到塑料粒子。
步骤3：通过单螺杆挤出机挤出成缆，然后进行辐射交联，剂量为100-200KGy。
制备实施例1
取乙烯-醋酸乙烯酯共聚物30份；乙丙橡胶70份；硅橡胶5份；氢氧化镁90份；氮化硼5份；抗氧剂4份。
通过密炼混炼造粒或者平行双螺杆挤出机混炼造粒，得到塑料粒子。
通过单螺杆挤出机挤出成缆，然后进行辐射交联，剂量为100-200KGy。
制备实施例2
取乙烯-醋酸乙烯酯共聚物50份；乙丙橡胶50份；硅橡胶10份；氢氧化镁70份；氮化硼10份；抗氧剂12份。
通过密炼混炼造粒或者平行双螺杆挤出机混炼造粒，得到塑料粒子。
通过单螺杆挤出机挤出成缆，然后进行辐射交联，剂量为100-200KGy。
制备实施例3
取乙烯-醋酸乙烯酯共聚物40份；乙丙橡胶60份；硅橡胶7份；氢氧化镁80份；氮化硼8份；抗氧剂8份。
通过密炼混炼造粒或者平行双螺杆挤出机混炼造粒，得到塑料粒子。
通过单螺杆挤出机挤出成缆，然后进行辐射交联，剂量为100-200KGy。
材料性能如下表所示。

Claims (4)

1.一种核级电缆护套料，由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物30-50份；乙丙橡胶50-70份；硅橡胶5-10份；氢氧化镁70-90份；氮化硼5-10份；抗氧剂4-12份；
所述的氢氧化镁为磷酸镁铵包覆氢氧化镁；
所述抗氧剂为四(β-(3,5-二叔丁基-4-羟基苯基)丙酸)季戊四醇酯与4,4'-硫代双(6-叔丁基-3-甲基苯酚)按照1：1混配而成。
2.根据权利要求1所述的一种核级电缆护套料，其特征在于：该核级电缆护套料由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物30份；乙丙橡胶50份；硅橡胶5份；氢氧化镁90份；氮化硼5份；抗氧剂4份。
3.根据权利要求1所述的一种核级电缆护套料，其特征在于：该核级电缆护套料由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物50份；乙丙橡胶50份；硅橡胶10份；氢氧化镁70份；氮化硼10份；抗氧剂12份。
4.根据权利要求1所述的一种核级电缆护套料，其特征在于：该核级电缆护套料由下列按照重量计的组分组成：乙烯-醋酸乙烯酯共聚物40份；乙丙橡胶60份；硅橡胶7份；氢氧化镁80份；氮化硼8份；抗氧剂8份。
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CN104629376A (zh) * 2015-02-27 2015-05-20 长园电子（东莞）有限公司 一种热缩电缆附件用热缩户外管及其制备方法
CN105754229A (zh) * 2016-03-04 2016-07-13 王金武 一种耐磨易散热的复合橡胶电缆料
CN108148288A (zh) * 2016-12-05 2018-06-12 吴红伟 一种电缆护套料及其制备方法
CN108148290A (zh) * 2016-12-06 2018-06-12 孙鹏 一种电缆护套
CN107189187A (zh) * 2017-07-04 2017-09-22 合肥安力电力工程有限公司 一种多功能电缆护套料
CN110041607B (zh) * 2019-04-30 2021-08-17 合肥工业大学 一种金属氢氧化物-氮化硼杂化填料/并用橡胶的核电电缆绝缘料及制备方法
CN112724678A (zh) * 2020-12-29 2021-04-30 唐山市海丰线缆有限公司 一种高频数据电缆及其制备方法
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