CN106279920A - 一种220kV低副产物的可交联聚乙烯绝缘料及其制备方法 - Google Patents
一种220kV低副产物的可交联聚乙烯绝缘料及其制备方法 Download PDFInfo
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Abstract
本发明涉及一种220kV低副产物的可交联聚乙烯绝缘料及其制备方法，它的原料配方包括下列重量份数的组分：低密度聚乙烯100份；抗氧剂0.1~1份；交联剂0.1~2.0份；交联促进剂1.0~3.0份。通过采用特定组分的低密度聚乙烯、抗氧剂、交联剂和交联促进剂组成的配方，能够避免制得的产品出现杂质含量过高、内部出现针孔等问题，能够满足220kV电缆绝缘料制造的要求。
Description
技术领域
本发明属于高分子材料领域，涉及一种氯乙烯绝缘料，具体涉及一种220kV低副产物的可交联聚乙烯绝缘料及其制备方法。
背景技术
通常汽车电线用聚氯乙烯电缆料生产方法是以聚氯乙烯树脂为基料，添加增塑剂、稳定剂以及加工助剂，经专用混炼装置加工而成，虽然可以满足汽车线生产基本需求，但是存在气味大、刮磨性能不佳以及加工性能不理想的问题。
汽车线由于其使用位置特殊，汽车在运行过程中无法避免线与线之间的互相摩擦，一旦塑料护套磨穿会直接导致短路造成交通事故隐患，此外，汽车车厢是一个较为封闭的空间，车厢中使用的配套物品必须环保无味，对人的身体健康无损伤。
交联聚乙烯具有绝缘电阻高、介电损耗小、耐溶剂腐蚀、耐老化、价廉易得、寿命长等特点，是目前电线电缆最主要的绝缘材料。目前在我国所制造的交联聚乙烯绝缘料，其配方体系为低密度聚乙烯、抗氧剂和过氧化物交联剂组成，一般仅用于35kV以下的电力电缆的绝缘层。该配方体系的过氧化物交联剂添加量较高，而由于受到分子结构的影响，过氧化物交联剂在加工过程中会产生部分副产物无法及时排出，导致制得的产品出现杂质含量过高、内部出现针孔等问题，不能满足220kV电缆绝缘料制造的设计要求。
发明内容
本发明目的是为了克服现有技术的不足而提供一种220kV低副产物的可交联聚乙烯绝缘料。
为达到上述目的，本发明所采用的技术方案为：一种220kV低副产物的可交联聚乙烯绝缘料，它的原料配方包括下列重量份数的组分：
低密度聚乙烯100份；
抗氧剂0.1～1份；
交联剂0.1～2.0份；
交联促进剂1.0～3.0份。
优化地，所述低密度聚乙烯的密度为0.850～0.950g/cm3，熔体流动指数为1.0～3.0g/10min。
优化地，所述抗氧剂为4,4'-硫代双(6-叔丁基-3-甲基苯酚)、四[甲基-β-(3,5-二叔丁基-4-羟基苯基)丙酸酯]季戊四醇酯、3,5-双(1,1-二甲基乙基)-4-羟基苯丙酸硫代二-2,1-乙二醇酯和β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯中的一种或几种组成的混合物。
优化地，所述交联剂为过氧化二异丙苯、过氧化二叔丁基和过氧化苯甲酰中的一种或几种组成的混合物。
优化地，所述交联促进剂为液体聚丁二烯、液体聚异戊二烯和液体聚三烯丙基异三聚氰酸酯中的一种或几种组成的混合物，其粘度为700～3300mPas。
本发明的又一目的在于提供一种上述220kV低副产物的可交联聚乙烯绝缘料的制备方法，它为在密闭环境中，按照配方将所述低密度聚乙烯、抗氧剂、交联剂和交联促进剂经混炼、均化、过滤、脱去挥发物后冷却切粒、洁净包装即可。
由于上述技术方案运用，本发明与现有技术相比具有下列优点：本发明220kV低副产物的可交联聚乙烯绝缘料，通过采用特定组分的低密度聚乙烯、抗氧剂、交联剂和交联促进剂组成的配方，能够避免制得的产品出现杂质含量过高、内部出现针孔等问题，能够满足220kV电缆绝缘料制造的要求。
具体实施方式
下面对本发明优选实施方案进行详细说明。
实施例1
本实施例提供一种220kV低副产物的可交联聚乙烯绝缘料，包括以下原料组分：
低密度聚乙烯100份(密度为0.916g/cm3，熔体流动指数为1.8g/10min)，
4,4'-硫代双(6-叔丁基-3-甲基苯酚)0.5份，
过氧化二异丙苯1.0份，
液体聚丁二烯(粘度为1100mPas)3.0份；
上述220kV低副产物的可交联聚乙烯绝缘料，采用下述方法制备得到：在封闭净化的生产环境下，按照配方将低密度聚乙烯、抗氧剂、交联剂与交联促进剂经混炼、均化、过滤、脱去挥发物后，冷却切粒，洁净包装，即得220kV低副产物的可交联聚乙烯绝缘料(混炼、均化、过滤等步骤采用现有的即可)。
实施例2
本实施例提供一种220kV低副产物的可交联聚乙烯绝缘料，其制备方法与实施例1中的一致，不同的是，包括以下原料组分：
低密度聚乙烯100份(密度为0.925g/cm3，熔体流动指数为2.5g/10min)，
3,5-双(1,1-二甲基乙基)-4-羟基苯丙酸硫代二-2,1-乙二醇酯0.8份，
过氧化苯甲酰0.5份，
液体聚异戊二烯(粘度为900mPas)2份。
实施例3
本实施例提供一种220kV低副产物的可交联聚乙烯绝缘料，其制备方法与实施例1中的一致，不同的是，包括以下原料组分：
低密度聚乙烯100份(密度为0.922g/cm3，熔体流动指数为2.3g/10min)，
3,5-双(1,1-二甲基乙基)-4-羟基苯丙酸硫代二-2,1-乙二醇酯0.8份，
过氧化苯甲酰0.5份，
液体聚三烯丙基异三聚氰酸酯(粘度为700mPas)1.8份。
实施例4
本实施例提供一种220kV低副产物的可交联聚乙烯绝缘料，其制备方法与实施例1中的一致，不同的是，包括以下原料组分：
低密度聚乙烯100份(密度为0.85g/cm3，熔体流动指数为1g/10min)，
四[甲基-β-(3,5-二叔丁基-4-羟基苯基)丙酸酯]季戊四醇酯1份，
过氧化二异丙苯2份，
液体聚丁二烯(粘度为900mPas)3份。
实施例5
本实施例提供一种220kV低副产物的可交联聚乙烯绝缘料，其制备方法与实施例1中的一致，不同的是，包括以下原料组分：
低密度聚乙烯150份(密度为0.95g/cm3，熔体流动指数为2g/10min)，
四[甲基-β-(3,5-二叔丁基-4-羟基苯基)丙酸酯]季戊四醇酯0.1份，
过氧化二异丙苯0.1份，
液体聚丁二烯(粘度为1100mPas)1份。
将实施例1至实施例5中制备的220kV低副产物的可交联聚乙烯绝缘料，采用JB/T10437-2004标准进行检测，测试结果见表1。
表1实施例1至实施例5中聚乙烯绝缘料的性能测试结果
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。
Claims (6)
1.一种220kV低副产物的可交联聚乙烯绝缘料，其特征在于，它的原料配方包括下列重量份数的组分：
低密度聚乙烯100份；
抗氧剂0.1~1份；
交联剂0.1~2.0份；
交联促进剂1.0~3.0份。
2.根据权利要求1所述的220kV低副产物的可交联聚乙烯绝缘料，其特征在于：所述低密度聚乙烯的密度为0.850~0.950 g/cm3，熔体流动指数为1.0~3.0 g/10min。
3.根据权利要求1所述的220kV低副产物的可交联聚乙烯绝缘料，其特征在于：所述抗氧剂为4,4'-硫代双(6-叔丁基-3-甲基苯酚)、四[甲基-β-(3,5-二叔丁基-4-羟基苯基)丙酸酯]季戊四醇酯、3,5-双(1,1-二甲基乙基)-4-羟基苯丙酸硫代二-2,1-乙二醇酯和β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯中的一种或几种组成的混合物。
4.根据权利要求1所述的220kV低副产物的可交联聚乙烯绝缘料，其特征在于：所述交联剂为过氧化二异丙苯、过氧化二叔丁基和过氧化苯甲酰中的一种或几种组成的混合物。
5.据权利要求1所述的220kV低副产物的可交联聚乙烯绝缘料，其特征在于：所述交联促进剂为液体聚丁二烯、液体聚异戊二烯和液体聚三烯丙基异三聚氰酸酯中的一种或几种组成的混合物，其粘度为700~3300 mPas。
6.权利要求1至5中任一所述220kV低副产物的可交联聚乙烯绝缘料的制备方法，其特征在于：它为在密闭环境中，按照配方将所述低密度聚乙烯、抗氧剂、交联剂和交联促进剂经混炼、均化、过滤、脱去挥发物后冷却切粒、洁净包装即可。
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| CN114800985A (zh) * | 2022-05-05 | 2022-07-29 | 安徽锐途新材料科技有限公司 | 一种滚塑交联聚乙烯手模及其组合物和制备方法 |
| CN116199963A (zh) * | 2023-03-10 | 2023-06-02 | 南京中超新材料股份有限公司 | 一种过氧化物交联聚乙烯料及其制备方法 |
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| CN114800985B (zh) * | 2022-05-05 | 2024-01-26 | 安徽锐途新材料科技有限公司 | 一种滚塑交联聚乙烯手模及其组合物和制备方法 |
| CN116199963A (zh) * | 2023-03-10 | 2023-06-02 | 南京中超新材料股份有限公司 | 一种过氧化物交联聚乙烯料及其制备方法 |
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