CN108164792A - 一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料及其制备方法 - Google Patents

一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料及其制备方法 Download PDF

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CN108164792A
CN108164792A CN201711449283.8A CN201711449283A CN108164792A CN 108164792 A CN108164792 A CN 108164792A CN 201711449283 A CN201711449283 A CN 201711449283A CN 108164792 A CN108164792 A CN 108164792A
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吴鑫
邵海彬
陶连敏
孙晓东
张尔梅
朱俊
王春丽
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CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF CO LTD
Jiangsu Zhongli Group Co Ltd
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Abstract

本发明公开了一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料及其制备方法,制备时:依次将绝缘料的组分40~70份乙烯—乙酸乙烯酯、10~50份高密度聚乙烯、140~180份阻燃剂A、2~10份阻燃剂B、10~20份相容剂、1~3助交联剂、1~5份润滑剂、1~3份抗氧剂加入密炼机中,然后立即开始混炼,混炼至料温为130℃~150℃时出料送入锥形喂料斗,经双螺杆造粒、冷切,制得产品;本发明的小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料具有突出的高温压力性能和高阻燃性能,工艺简单、成本较低、环保节能。

Description

一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘 料及其制备方法
技术领域
本发明涉及一种电缆绝缘料,具体是一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料。同时,本发明还涉及上述绝缘料的制备方法。
背景技术
随着国民经济的持续发展,电线电缆的用量不断增加,火灾的危险性亦增加。而近年来随着人们对安全性、可靠性和环保性认识的提高,我国对低烟无卤阻燃电线电缆的需求越来越大,电线电缆的阻燃问题便显得尤为重要。为了降低安全隐患,越来越注重电缆具有低烟、无卤、高阻燃、优良的耐高温压力性能。为了满足市场的需求,越来越多的低烟无卤阻燃电缆料被开发出来。专利文献CN103087394B公开了一种低烟无卤阻燃电缆材料,但是该低烟无卤阻燃电缆材料是一种热塑性的低烟无卤阻燃材料,使用的范围较窄,而且制备得到的低烟无卤阻燃电缆材料容易吸收空气中的水分,使绝缘层的体积电阻系数大幅度下降,存在较大安全隐患。
专利文献CN104231420A、CN106519409A、CN104212054A均公开了一种105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,专利CN104231420A中公开的105℃辐照交联低烟无卤阻燃聚烯烃绝缘料具有低烟、阻燃、柔性高的优点,专利CN106519409A中公开的105℃辐照交联低烟无卤阻燃聚烯烃绝缘料具有拉伸强度高、抗开裂强和阻燃性能好的优点,但这两个专利中通过VW-1燃烧试验时均采用的是UL3386(12AWG)的铜导体,专利CN104212054A中公开的105℃辐照交联低烟无卤阻燃聚烯烃绝缘料具有优异的机械性能、电性能和阻燃性能(通过1.5mm2单芯线vw-1燃烧试验),但其自制复合阻燃剂,共需要两次不同温度的混炼,加工工艺复杂,老化试验温度太低(121℃)。
上述专利中的电缆料虽然具有较优异的性能,但不能同时满足小线径、高阻燃、高温压力优异和老化性能好(136℃)的要求。因此,开发出新的小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料是当前亟需解决的问题,该绝缘料阻燃性和自熄性满足垂直燃烧测试要求(通过VW-1试验)、高温压力性能好(通过BS7655-5.1中E15)。
发明内容
本发明的目的是提供一种高阻燃、高温压力性能好的小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料及其制备方法,该绝缘料阻燃性和自熄性满足垂直燃烧测试要求(通过VW-1试验)、高温压力性能好(通过BS7655-5.1中E15)。
为了达到上述技术目的,本发明的技术方案是:
一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其包括以下重量份组分:
乙烯—乙酸乙烯酯 40~70
高密度聚乙烯 10~50
相容剂 10~20
阻燃剂A 140~180
阻燃剂B 2~10
助交联剂 1~3
润滑剂 1~5
抗氧剂 1~3
所述乙烯—乙酸乙烯酯为VA含量在16~40%之间的聚合物;所述阻燃剂A为氢氧化镁、氢氧化铝、碱式碳酸镁中的至少一种;所述阻燃剂B为三聚氰胺、硼酸锌、聚磷酸铵、聚磷酸三聚氰胺、红磷阻燃剂中的至少一种;所述相容剂为马来酸酐接枝茂金属线性低密度聚乙烯、马来酸酐接枝乙烯—乙酸乙烯酯、马来酸酐接枝聚烯烃弹性体中的至少一种;所述助交联剂为三烯丙基异三聚氰酸酯;所述抗氧剂为抗氧剂1010、抗氧剂1076、抗氧剂168、抗氧剂626、抗氧剂300、抗氧剂1024中的至少一种。
所述高密度聚乙烯的熔体流动速率范围为0.8~5.0g/10min,密度为0.950~0.960g/cm3。作为进一步优选,所述高密度聚乙烯为单一高密度聚乙烯或由不同熔体流动速率的高密度聚乙烯混合而成。
所述润滑剂为硬脂酸及其衍生物、金属皂类、饱和烃类或硅系润滑剂。所述硬脂酸及其衍生物为硬脂酸、硬脂酸正丁酯或硬脂酸辛酯。所述金属皂类润滑剂为硬脂酸钙或硬脂酸锌。所述饱和烃类润滑剂为液体石蜡、固体石蜡、微晶石蜡或聚乙烯蜡。所述硅系润滑剂为高粘度硅油或硅酮母料。
一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料的制备方法,包括以下步骤:依次将40~70份乙烯—乙酸乙烯酯、10~50份高密度聚乙烯、140~180份阻燃剂A、2~10份阻燃剂B、10~20份相容剂、1~3助交联剂、1~5份润滑剂、1~3份抗氧剂加入密炼机中,然后立即开始混炼,混炼至料温为130℃~150℃时出料送入锥形喂料斗,经双螺杆造粒、冷切,制得产品。
所述双螺杆造粒挤出机各段温度依次为:一区100~110℃,二区110~120℃,三区120~130℃,四区130~140℃,五区140~150℃,六区150~160℃,七区150~160℃,八区150~160℃,九区140~150℃,机头温度130~140℃。
本发明的小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料通过添加一定量的高密度聚乙烯,利用其熔点高这一点提高该料高温压力性能;通过不同VA含量的乙烯—乙酸乙烯酯复配及结合阻燃剂的复配提高阻燃性能;通过相容剂的配合使用提高树脂与树脂、树脂与阻燃剂间的相容性;通过抗氧剂的复配使用提高老化性能,该料具有突出的高温压力性能(通过BS7655-5.1中E15)和高阻燃性能,工艺简单、成本较低、环保节能。
具体实施方式
实施例1
依次将40份乙烯—乙酸乙烯酯(VA含量为16%)、50份高密度聚乙烯(熔体流动速率为5g/10min,密度为0.950g/cm3)、10份马来酸酐接枝茂金属线性低密度聚乙烯、180份氢氧化镁、2份白度化红磷、1.5份交联剂TAIC(三烯丙基异三聚氰酸酯)、3份硅油、1.5份抗氧剂1010加入密炼机中,然后立即开始混炼,混炼至料温为137℃时出料送入锥形喂料斗,经双螺杆造粒、冷切,制得产品。挤出机各段温度依次为:一区110℃,二区120℃,三区130℃,四区140℃,五区155℃,六区155℃,七区155℃,八区155℃,九区149℃,机头温度140℃。上述电缆料挤出成型电缆样品,性能测试结果见表1。
实施例2
依次将55份乙烯—乙酸乙烯酯(VA含量为40%)、30份高密度聚乙烯(熔体流动速率为1g/10min,密度为0.950g/cm3)、15份马来酸酐接枝乙烯—乙酸乙烯酯、160份碱式碳酸镁、5份三聚氰胺、2份交联剂TAIC(三烯丙基异三聚氰酸酯)、2.5份硅酮母料、2份抗氧剂1076加入密炼机中,然后立即开始混炼,混炼至料温为136℃时出料送入锥形喂料斗,经双螺杆造粒、冷切,制得产品。挤出机各段温度依次为:一区105℃,二区115℃,三区125℃,四区135℃,五区149℃,六区152℃,七区152℃,八区152℃,九区143℃,机头温度140℃。上述电缆料挤出成型电缆样品,性能测试结果见表1。
实施例3
依次将70份乙烯—乙酸乙烯酯(VA含量为26%)、10份高密度聚乙烯(熔体流动速率为3.0g/10min,密度为0.960g/cm3)、20份马来酸酐接枝聚烯烃弹性体、140份氢氧化铝、10份聚磷酸铵、2.5交联剂TAIC(三烯丙基异三聚氰酸酯)、5份硅油、3份抗氧剂1024加入密炼机中,然后立即开始混炼,混炼至料温为135℃时出料送入锥形喂料斗,经双螺杆造粒、冷切,制得产品。挤出机各段温度依次为:一区109℃,二区118℃,三区129℃,四区139℃,五区119℃,六区150℃,七区150℃,八区150℃,九区143℃,机头温度140℃。上述电缆料挤出成型电缆样品,性能测试结果见表1。
表1性能测试结果
上述实施例不以任何方式限制本发明,凡是采用等同替换或等效变换的方式获得的技术方案均落在本发明的保护范围内。

Claims (10)

1.一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于包括以下重量份组分:
所述乙烯—乙酸乙烯酯为VA含量在16~40%之间的聚合物;
所述阻燃剂A为氢氧化镁、氢氧化铝、碱式碳酸镁中的至少一种;
所述阻燃剂B为三聚氰胺、硼酸锌、聚磷酸铵、聚磷酸三聚氰胺、红磷阻燃剂中的至少一种;
所述相容剂为马来酸酐接枝茂金属线性低密度聚乙烯、马来酸酐接枝乙烯—乙酸乙烯酯、马来酸酐接枝聚烯烃弹性体中的至少一种;
所述助交联剂为三烯丙基异三聚氰酸酯;
所述抗氧剂为抗氧剂1010、抗氧剂1076、抗氧剂168、抗氧剂626、抗氧剂300、抗氧剂1024中的至少一种。
2.根据权利要求1所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述高密度聚乙烯的熔体流动速率范围为0.8~5.0g/10min,密度为0.950~0.960g/cm3
3.根据权利要求1所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述高密度聚乙烯为单一高密度聚乙烯或由不同熔体流动速率的高密度聚乙烯混合而成。
4.根据权利要求1所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述润滑剂为硬脂酸及其衍生物、金属皂类、饱和烃类或硅系润滑剂。
5.根据权利要求4所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述硬脂酸及其衍生物为硬脂酸、硬脂酸正丁酯或硬脂酸辛酯。
6.根据权利要求4所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述金属皂类润滑剂为硬脂酸钙或硬脂酸锌。
7.根据权利要求4所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述饱和烃类润滑剂为液体石蜡、固体石蜡、微晶石蜡或聚乙烯蜡。
8.根据权利要求4所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料,其特征在于:所述硅系润滑剂为高粘度硅油或硅酮母料。
9.根据权利要求1-8任一项所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料的制备方法,其特征在于包括以下步骤:依次将40~70份乙烯—乙酸乙烯酯、10~50份高密度聚乙烯、140~180份阻燃剂A、2~10份阻燃剂B、10~20份相容剂、1~3助交联剂、1~5份润滑剂、1~3份抗氧剂加入密炼机中,然后立即开始混炼,混炼至料温为130℃~150℃时出料送入锥形喂料斗,经双螺杆造粒、冷切,制得产品。
10.根据权利要求9所述的一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料的制备方法,其特征在于所述双螺杆造粒挤出机各段温度依次为:一区100~110℃,二区110~120℃,三区120~130℃,四区130~140℃,五区140~150℃,六区150~160℃,七区150~160℃,八区150~160℃,九区140~150℃,机头温度130~140℃。
CN201711449283.8A 2017-12-27 2017-12-27 一种小线径线缆用105℃辐照交联低烟无卤阻燃聚烯烃绝缘料及其制备方法 Pending CN108164792A (zh)

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