CN105713299B - 一种耐温125℃免辐照聚丙烯改性材料 - Google Patents
一种耐温125℃免辐照聚丙烯改性材料 Download PDFInfo
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Abstract
本发明涉及一种耐温125℃免辐照聚丙烯改性材料,它包括以下重量份数的组分:聚丙烯树脂40~80份;高密度聚乙烯10~30份;聚烯烃弹性体5~20份;有机包覆纳米高岭土母粒15~40份;抗氧剂0.5‑3份;润滑剂0.8‑2.5份。通过采用特定重量份数组分的配方,使其能够耐温125℃,且无需辐照,简化了流程,缩短了加工周期,也节约了成本;最终产品具有耐热水的特点,可以满足客户要求的热水加压电阻稳定的要求;与常规聚丙烯材料相比,改善了薄壁挤出外径不规整的缺点,挤出表面光滑;而且能够对整体体系起到支撑的作用,挤出不容易偏心。
Description
技术领域
本发明属于电缆线材料领域,涉及一种聚丙烯改性材料,具体涉及一种耐温125℃免辐照聚丙烯改性材料。
背景技术
深海潜艇中部分通讯电缆要求具有挤出薄壁、耐热水、耐温125℃、高电阻等性能,现有的通讯电缆材料通常为交联聚乙烯改性料(即采用XLPE材料),使用中发现该材料在热水中加压经常会出现电阻不稳定或者大幅下降的现象,存在一定的风险。
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耐温125℃免辐照聚丙烯改性材料。
为达到上述目的,本发明所采用的技术方案为:一种耐温125℃免辐照聚丙烯改性材料,它包括以下重量份数的组分:
优化地,所述有机包覆纳米高岭土母粒通过先使用硅烷改性纳米高岭土后再用相容剂熔融包覆制得。作为本发明的一种优选实施方式,所述硅烷的质量为所述纳米高岭土质量的1%~2%,所述相容剂与所述纳米高岭土的质量比为1:3~4;所述相容剂为马来酸苷接枝共聚型聚丙烯。
根据本发明的又一具体且优选方面,所述聚丙烯树脂熔融指数为1.0~2.0,等规指数大于95%。优化地,所述高密度聚乙烯为熔融指数<2的高密度聚乙烯和熔融指数>6的高密度聚乙烯形成的混合物,其质量比为2~3:1。优化地,所述聚烯烃弹性体的硬度为70~85A。优化地,所述抗氧剂含有抗氧剂300、抗氧剂1024以及抗氧剂1010、抗氧剂168和抗氧剂DLTP中的一种或多种组成的混合物。优化地,所述润滑剂为硬脂酸盐和聚乙烯蜡组成的混合物,其质量比为0.5~1:1~1.5。
根据本发明的又一具体且优选方面,它包括以下重量份数的组分:
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:本发明耐温125℃免辐照聚丙烯改性材料,通过采用特定重量份数组分的配方,使其能够耐温125℃,且无需辐照,简化了流程,缩短了加工周期,也节约了成本;最终产品具有耐热水的特点,可以满足客户要求的热水加压电阻稳定的要求;与常规聚丙烯材料相比,改善了薄壁挤出外径不规整的缺点,挤出表面光滑;而且能够对整体体系起到支撑的作用,挤出不容易偏心。
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
本实施例提供一种耐温125℃免辐照聚丙烯改性材料,它包括以下重量份数的组分:
其中,聚丙烯树脂选用扬子石化的F401,其熔融指数为1.9,等规指数大于95%;高密度聚乙烯为熔融指数<2的高密度聚乙烯和熔融指数>6的高密度聚乙烯形成的混合物,其质量比为2:1;聚烯烃弹性体为POE弹性体,硬度为71A,能够起到增韧的作用;抗氧剂为抗氧剂300、抗氧剂1024和抗氧剂1010按质量比为1:0.5:1组成的混合物;润滑剂为硬脂酸钠和聚乙烯蜡组成的混合物,其质量比为0.8:1.5;有机包覆纳米高岭土母粒的制备方法包括以下步骤:(a)向纳米高岭土中低速喷入占其质量比1%的硅烷进行表面改性;(b)向该混合物中加入共聚型聚丙烯相容剂(相容剂与表面改性纳米高岭土的质量比为1:4),使用双螺杆机或者密炼机混炼造粒;这样能够增加有机物和无机物的相容性以及提高配方的电阻,不影响整体耐水性能;还能对整体体系起到支撑的作用,挤出不容易偏心。
上述耐温125℃免辐照聚丙烯改性材料的制备方法采用常规的方法制备即可,具体包括以下步骤:将上述各种原料按配方称量好,在捏合机中搅拌均匀(低速),然后经双螺杆挤出(双螺杆挤出温度:进料段160~180℃,熔融段:190~210℃,模头:200~220℃),拉条切粒。
实施例2
本实施例提供一种耐温125℃免辐照聚丙烯改性材料,其原料配方与实施例1中的基本相同,不同的是各组分重量份数不一致,具体为:
实施例3
本实施例提供一种耐温125℃免辐照聚丙烯改性材料,其原料配方与实施例1中的基本相同,不同的是各组分重量份数不一致,具体为:
实施例4
本实施例提供一种耐温125℃免辐照聚丙烯改性材料,其原料配方与实施例1中的基本相同,不同的是有机包覆纳米高岭土母粒制备方法中的具体参数不一致,具体为:
(a)向纳米高岭土中添加占其质量比2%的硅烷进行混合改性;
(b)向该混合物中加入聚丙烯作为相容剂,聚丙烯与纳米高岭土的质量比为1:3,使用双螺杆机或者密炼机混炼造粒。
实施例5
本实施例提供一种耐温125℃免辐照聚丙烯改性材料,其原料配方与实施例1中的基本相同,不同的是采用了不同的原料:聚丙烯树脂大庆石化T30S,其熔融指数为3,等规指数大于95%;高密度聚乙烯为熔融指数<2的高密度聚乙烯和熔融指数>6的高密度聚乙烯形成的混合物,其质量比为3:1;聚烯烃弹性体为EVA弹性体,硬度为75A;抗氧剂为抗氧剂300、抗氧剂1024、抗氧剂1010和抗氧剂168按质量比为1:0.5:0.5:0.5组成的混合物;润滑剂为硬脂酸钠和聚乙烯蜡组成的混合物,其质量比为1:1。
对比例1
本例提供一种免辐照聚丙烯改性材料,其原料配方与实施例1中的基本相同,不同的是采用未进行有机包覆的纳米高岭土母粒。
对比例2
本例提供一种免辐照聚丙烯改性材料,其原料配方与实施例1中的基本相同,不同的是不含有聚丙烯树脂。
表1实施例1至5、对比例1和对比例2中免辐照聚丙烯改性材料的性能数据
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 (9)
1.一种耐温125℃免辐照聚丙烯改性材料,其特征在于,它包括以下重量份数的组分:
聚丙烯树脂 40~80份;
高密度聚乙烯 10~30份;
聚烯烃弹性体 5~20份;
有机包覆纳米高岭土母粒 15~40份;
抗氧剂 0 .5~3份;
润滑剂 0 .8~2 .5份;
所述有机包覆纳米高岭土母粒通过先使用硅烷改性纳米高岭土后再用相容剂熔融包覆制得。
2.根据权利要求1所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述硅烷的质量为所述纳米高岭土质量的1%~2%,所述相容剂与所述纳米高岭土的质量比为1:3~4。
3.根据权利要求1或2所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述相容剂为马来酸酐接枝共聚型聚丙烯。
4.根据权利要求1所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述聚丙烯树脂的熔融指数为1 .0~2 .0,等规指数大于95%。
5.根据权利要求1或4所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述高密度聚乙烯为熔融指数<2的高密度聚乙烯和熔融指数>6的高密度聚乙烯形成的混合物,其质量比为2~3:1。
6.根据权利要求1或4所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述聚烯烃弹性体的邵氏A硬度为70~85。
7.根据权利要求1或4所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述抗氧剂含有抗氧剂300、抗氧剂1024以及抗氧剂1010、抗氧剂168和抗氧剂DLTP中的一种或多种组成的混合物。
8.根据权利要求1或4所述的耐温125℃免辐照聚丙烯改性材料,其特征在于:所述润滑剂为硬脂酸盐和聚乙烯蜡组成的混合物,其质量比为0 .5~1:1~1 .5。
9.根据权利要求1所述的耐温125℃免辐照聚丙烯改性材料,其特征在于,它包括以下重量份数的组分:
聚丙烯树脂 70份;
高密度聚乙烯 20份;
聚烯烃弹性体 10份;
有机包覆纳米高岭土母粒 25份;
抗氧剂 1 .5份;
润滑剂 1份。
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CN107987377A (zh) * | 2017-11-19 | 2018-05-04 | 黄风山 | 增韧pp中空制品配方 |
CN108047557A (zh) * | 2017-12-19 | 2018-05-18 | 上海至正道化高分子材料股份有限公司 | 一种耐气候老化125度热塑性聚烯烃电缆料及其制备方法 |
CN111446031A (zh) * | 2020-04-09 | 2020-07-24 | 杨义展 | 一种双层陶瓷化绝缘无毒免辐照电线及制作方法 |
CN111909453B (zh) * | 2020-08-13 | 2021-05-14 | 江苏德威新材料股份有限公司 | 一种同轴电缆用125℃低介电损耗热塑性聚丙烯绝缘组合物及其应用 |
CN116178820B (zh) * | 2023-02-24 | 2024-09-10 | 苏州颐顺环保新材料科技有限公司 | 一种耐低温的聚丙烯材料及其制备方法与应用 |
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