CN116082740B - 一种辐照交联发泡pfa/etfe电缆绝缘料及其制备方法 - Google Patents
一种辐照交联发泡pfa/etfe电缆绝缘料及其制备方法 Download PDFInfo
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- CN116082740B CN116082740B CN202211356418.7A CN202211356418A CN116082740B CN 116082740 B CN116082740 B CN 116082740B CN 202211356418 A CN202211356418 A CN 202211356418A CN 116082740 B CN116082740 B CN 116082740B
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- 229920001155 polypropylene Polymers 0.000 claims description 22
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- 230000003078 antioxidant effect Effects 0.000 claims description 19
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 16
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- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 claims description 15
- 239000004215 Carbon black (E152) Substances 0.000 claims description 15
- 229930195733 hydrocarbon Natural products 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
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- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 10
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 10
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
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- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
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- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 1
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- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
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- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
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- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
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- 230000035882 stress Effects 0.000 description 1
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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Abstract
本发明公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,其特征在于,按重量份计,包括以下原料:50‑80份ETFE、20‑40份PFA、0.5‑5份敏化剂、0.5‑3份增塑剂、1‑5份无机助剂、0.1‑1份润滑剂、0‑3份助剂。得到的复合材料具有高绝缘效果,且能够显著降低材料的密度的同时,保持一定的机械性能。
Description
技术领域
本发明涉及C08L27技术领域,具体涉及一种辐照交联发泡PFA/ETFE电缆绝缘料及其制备方法。
背景技术
科技快速发展的今天,缆线材料越来越贴近人们的生活,由于缆线的使用面特别广,因此护套材料应该具有耐摩擦、耐腐蚀、耐磨蚀、耐高温等性能,同时保证绝缘水平和机械水平。交联ETFE是电线电缆特种材料中较为特殊的一类。它具有氟材料特有的耐化学品,耐高温性能,力学性能,同时ETFE相比于PTFE,其中所特有的乙烯链段提供了可供交联的反应位点,同时也打破了全氟结构的强相互作用力,提高了整体链段的柔性,优化了加工性能。因此,交联ETFE材料被广泛应用于各种苛刻条件下的材料,如高温,多种化学品等条件,交联ETFE均可满足使用要求。
CN106448846A公开一种氟聚合物电线电缆及其制备方法,通过将ETFE、氟聚合物等材料进行复配获得了一种含氟聚合物的耐腐蚀抗老化的电缆,但是该线缆在恶劣环境下,寿命较短。
CN1866411公开了一种辐照交联改性乙烯-四氟乙烯聚合物(X-ETFE)绝缘电线电缆,通过辐照交联改性提高绝缘电线耐温等级、机械性能及耐老化性能等,但是ETFE的加工温度一般在250℃以上,甚至会超过300℃。其较高的硬度也会对设备造成巨大的磨损,影响加工精度和使用寿命。
发明内容
针对上述问题,本发明第一个方面公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:50-80份乙烯-四氟乙烯共聚物(ETFE)、20-40份可溶性聚四氟乙烯(PFA)、0.5-5份敏化剂、0.5-3份增塑剂、1-5份无机助剂、0.1-1份润滑剂、0-3份助剂。
优选的,按重量份计,包括以下原料:68份乙烯-四氟乙烯共聚物(ETFE)、27份可溶性聚四氟乙烯(PFA)、3份敏化剂、1.5份增塑剂、3.5份无机助剂、0.5份润滑剂、1份助剂。
在一种实施方式中,所述ETFE熔融指为10-13g/10min。
优选的,所述ETFE熔融指数为11g/10min,可以列举的有,购自于美国DUPONT公司,牌号为HT-2185。
在一种实施方式中,所述PFA熔融指为11-18g/10min。
优选的,所述PFA熔融指数为15g/10min,比如衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
ETFE仍对加工条件和器材提出了非常高的要求。传统的ETFE的加工温度一般在250℃以上,甚至会超过300℃。其较高的硬度也会对设备造成巨大的磨损,影响加工精度和使用寿命。PFA是一种可熔融加工的氟塑料,其化学性能与PTFE和FEP相似,但FEP只能在200℃以下使用,PTFE不能注塑,而PFA的长期使用温度为-80~260℃,且还具有塑料中较低的摩擦系数和卓越的耐化学腐蚀性。发明人在大量实验中,创造性发现,加入PFA,加工PFA/ETFE复合材料的方法,既可以将ETFE材料的加工性能进一步优化,又降低了加工难度,有助于将材料推广到更多的领域中。
在ETFE中添加PFA,必须严格控制二者的熔融指数,选择较高的熔融流动指数的ETFE和PFA,并且PFA熔融指数要高于ETFE,可以提高复合材料的化学耐受性,以及加工性能,发明人认为可能的原因是:选择熔融指数较高的ETFE和PFA,流动性较好,相容性较高,融合程度高,从而提高了复合材料的交联度,减少了分子间的微观应力,在严苛的使用条件下,亦可以表现优良的绝缘性能。
在一种实施方式中,所述敏化剂选自三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、三烯丙基异氰脲酸酯季戊四醇四丙烯酸酯、甲基丙烯酸甘油脂、二季戊四醇六丙烯酸、氰尿酸三丙酯中的一种或多种。
优选的,所述敏化剂为三羟甲基丙烷三丙烯酸酯。
在一种实施方式中,所述无机助剂选自二氧化硅、滑石粉、四针状氧化锌晶须、碳酸钙、沸石、硅藻土、水滑石中的一种或多种。
优选的,所述无机助剂为四针状氧化锌晶须。
在一种实施方式中,所述增塑剂选自邻苯二甲酸二辛脂、偏苯三酸三辛酯、邻苯二甲酸二异壬酯、脂肪酸酯中的一种或多种。
优选的,所述增塑剂为邻苯二甲酸二辛脂。
在一种实施方式中,所述润滑剂选自脂肪酸、脂肪酸酯、脂肪酸酰胺、金属皂、烃类聚合物或有机硅化合物中的一种或多种。
优选的,所述润滑剂为烃类聚合物。
进一步优选的,所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为(5-10):1。
本发明通过添加增韧剂和润滑剂,提高ETFE复合材料的韧性,发明人认为可能的原因是,本发明加入增韧剂,尤其是含有极性酯基的邻苯二甲酸二辛脂,与ETFE和PFA中的极性键相互作用,减小了大分子间的极性作用力,提高了材料韧性,而聚乙烯蜡和聚丙烯蜡加入,在润滑的同时,增加了复合材料的立体感和光泽度,提高了复合材料的抗刮性能。
在一种实施方式中,所述助剂包括抗氧剂、光稳定剂、紫外吸收剂中的一种或多种。
优选的,所述助剂为抗氧剂。
在一种实施方式中,所述抗氧剂选自抗氧剂245、抗氧剂168、抗氧剂225、抗氧剂1010、抗氧剂1076中的一种或多种。
优选的,所述抗氧剂为抗氧剂245。
本发明另一方面公开了所述电缆绝缘料的制备方法,包括以下步骤:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为210℃-230℃。
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理。
在一种实施方式中,所述步骤(1)采用同向双螺杆挤出机共混造粒;为解决聚乙烯蜡、聚丙烯蜡因熔点低,与其它材料同时加入挤出机会造成打滑、挤不出料等问题,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡;既能保证生产的连续性,同时也能保证聚乙烯蜡、聚丙烯蜡添加量的准确和均匀稳定。
在一种实施方式中,步骤(3)辐照强度在10-20MRad。
优选的,步骤(3)为10-12MRad。
进一步优选的,步骤(3)为11MRad。
有益效果:
1、本发明通过添加可溶性聚四氟乙烯能够降低ETFE的加工难度。
2、本发明选择熔融指数较高的ETFE和PFA,流动性较好,相容性较高,融合程度高,在严苛的使用条件下,亦可以表现优良的绝缘性能。
3、本发明控制ETFE与PFA相互作用并配合交联工艺能够更好的增加制品的耐温等级,同时还弥补了发泡带来的强度降低的缺陷。
4、本发明通过物理发泡可进一步降低材料的导电率,达到高绝缘效果,且能够显著降低材料的密度的同时,保持一定的机械性能。
具体实施方式
实施例1
本实施例1公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:50份ETFE、40份PFA、0.5份敏化剂、0.5份增塑剂、1份无机助剂、0.1份润滑剂、0.5份抗氧剂。
所述ETFE熔融指数为11g/10min,购自于美国DUPONT公司,牌号为HT-2185。
所述PFA熔融指数为15g/10min,衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
所述敏化剂为三羟甲基丙烷三丙烯酸酯。
所述无机助剂为四针状氧化锌晶须。
所述增塑剂为邻苯二甲酸二辛脂。
所述润滑剂为烃类聚合物。
所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为5:1。
聚乙烯蜡购自于东莞市丰钛进出口有限公司,牌号为NV-201。
聚丙烯蜡德国科莱恩,牌号为Licocene PP 2602。
所述抗氧剂为抗氧剂245,CAS号为36443-68-2。
本实施例1另一方面公开了所述电缆绝缘料的制备方法,步骤如下:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为210℃。
采用同向双螺杆挤出机共混造粒,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡。
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理,辐照强度在10MRad。
实施例2
本实施例2公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:80份ETFE、20份PFA、5份敏化剂、3份增塑剂、5份无机助剂、1份润滑剂、3份抗氧剂。
所述ETFE熔融指数为11g/10min,购自于美国DUPONT公司,牌号为HT-2185。
所述PFA熔融指数为15g/10min,比如衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
所述敏化剂为三羟甲基丙烷三丙烯酸酯。
所述无机助剂为四针状氧化锌晶须。
所述增塑剂为邻苯二甲酸二辛脂。
所述润滑剂为烃类聚合物。
所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为10:1。
聚乙烯蜡购自于东莞市丰钛进出口有限公司,牌号为NV-201。
聚丙烯蜡德国科莱恩,牌号为Licocene PP 2602
所述抗氧剂为抗氧剂245,CAS号为36443-68-2。
本实施例2另一方面公开了所述电缆绝缘料的制备方法,包括以下步骤:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为230℃。
采用同向双螺杆挤出机共混造粒,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡。
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理,辐照强度12MRad。
实施例3
本实施例3公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:68份ETFE、27份PFA、3份敏化剂、1.5份增塑剂、3.5份无机助剂、0.5份润滑剂、1份抗氧剂。
所述ETFE熔融指数为11g/10min,购自于美国DUPONT公司,牌号为HT-2185。
所述PFA熔融指数为15g/10min,衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
所述敏化剂为三羟甲基丙烷三丙烯酸酯。
所述无机助剂为四针状氧化锌晶须。
所述增塑剂为邻苯二甲酸二辛脂。
所述润滑剂为烃类聚合物。
所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为7:1。
聚乙烯蜡购自于东莞市丰钛进出口有限公司,牌号为NV-201。
聚丙烯蜡德国科莱恩,牌号为Licocene PP 2602。
所述抗氧剂为抗氧剂245,CAS号为36443-68-2。
本实施例3另一方面公开了所述电缆绝缘料的制备方法,步骤如下:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为220℃。
采用同向双螺杆挤出机共混造粒,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡。
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理,辐照强度为11MRad。
对比例1
本对比例1公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:85份ETFE、0份PFA、3份敏化剂、1.5份增塑剂、3.5份无机助剂、0.5份润滑剂、1份抗氧剂。
所述ETFE熔融指数为11g/10min,购自于美国DUPONT公司,牌号为HT-2185。
所述PFA熔融指数为15g/10min,衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
所述敏化剂为三羟甲基丙烷三丙烯酸酯。
所述无机助剂为四针状氧化锌晶须。
所述增塑剂为邻苯二甲酸二辛脂。
所述润滑剂为烃类聚合物。
所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为7:1。
聚乙烯蜡购自于东莞市丰钛进出口有限公司,牌号为NV-201。
聚丙烯蜡德国科莱恩,牌号为Licocene PP 2602。
所述抗氧剂为抗氧剂245,CAS号为36443-68-2。
本对比例1另一方面公开了所述电缆绝缘料的制备方法,步骤如下:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为220℃。
采用同向双螺杆挤出机共混造粒,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡。
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理,辐照强度为11MRad。
对比例2
本对比例2公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:68份ETFE、27份PFA、3份敏化剂、0.1份增塑剂、3.5份无机助剂、1份抗氧剂。
所述ETFE熔融指数为11g/10min,购自于美国DUPONT公司,牌号为HT-2185。
所述PFA熔融指数为15g/10min,衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
所述敏化剂为三羟甲基丙烷三丙烯酸酯。
所述无机助剂为四针状氧化锌晶须。
所述增塑剂为邻苯二甲酸二辛脂。
所述抗氧剂为抗氧剂245,CAS号为36443-68-2。
本实施例3另一方面公开了所述电缆绝缘料的制备方法,步骤如下:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为220℃。
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理,辐照强度为11MRad。
对比例3
本对比例3公开了一种辐照交联发泡PFA/ETFE电缆绝缘料,按重量份计,包括以下原料:68份ETFE、27份PFA、3份敏化剂、1.5份增塑剂、3.5份无机助剂、0.5份润滑剂、1份抗氧剂。
所述ETFE熔融指数为11g/10min,购自于美国DUPONT公司,牌号为HT-2185。
所述PFA熔融指数为15g/10min,衢州佰茂科技有限公司,牌号为FJY-A15。
所述熔融指数均在190℃、2.16kg条件下测得。
所述敏化剂为三羟甲基丙烷三丙烯酸酯。
所述无机助剂为四针状氧化锌晶须。
所述增塑剂为邻苯二甲酸二辛脂。
所述润滑剂为烃类聚合物。
所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为7:1。
聚乙烯蜡购自于东莞市丰钛进出口有限公司,牌号为NV-201。
聚丙烯蜡德国科莱恩,牌号为Licocene PP 2602。
所述抗氧剂为抗氧剂245,CAS号为36443-68-2。
本实施例3另一方面公开了所述电缆绝缘料的制备方法,步骤如下:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为220℃。
采用同向双螺杆挤出机共混造粒,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡。
(2)在成型设备中加入共混粒子,挤压成型。
(3)对线材进行辐照处理,辐照强度为11MRad。
性能测试:
1、力学性能测试:依据GB/T 2651.1,对线材辐照交联前后的拉伸强度和断裂伸长率进行测试,见下表1。
2、交联度测试:依据GJB 17.6对线材交联度测试,符合标准记为PASS,否则记为NG,见下表2。
3、颗粒料的介电损耗角正切:依据GB/T 3048.5,见下表2。
4、线材浸水电压测试:依据GJB 17.6,不发生击穿则满足要求记为PASS,否则记为NG,见下表2。
表1
表2
浸水电压测试 | 损耗角正切 | 交联度测试 | |
实施例1 | PASS | 3.6×10-4 | PASS |
实施例2 | PASS | 2.5×10-4 | PASS |
实施例3 | PASS | 3.9×10-4 | PASS |
对比例1 | NG | 3.8×10-4 | PASS |
对比例2 | NG | 6.4×10-4 | NG |
对比例3 | NG | 7.9×10-4 | NG |
Claims (1)
1.一种辐照交联发泡PFA/ETFE电缆绝缘料,其特征在于,按重量份计,包括以下原料:68份ETFE、27份PFA、3份敏化剂、1.5份增塑剂、3.5份无机助剂、0.5份润滑剂、1份抗氧剂,
所述ETFE熔融指数为11g/10min;
所述PFA熔融指数为15g/10min;
所述熔融指数均在190℃、2.16kg条件下测得;
所述敏化剂为三羟甲基丙烷三丙烯酸酯;
所述无机助剂为四针状氧化锌晶须;
所述增塑剂为邻苯二甲酸二辛脂;
所述润滑剂为烃类聚合物;
所述烃类聚合物为聚乙烯蜡和聚丙烯蜡的复配,质量比为7:1;
所述抗氧剂为抗氧剂245;
电缆绝缘料的制备方法,步骤如下:
(1)将原料共混造粒,得到共混粒子;所使用的造粒温度为220℃;
采用同向双螺杆挤出机共混造粒,采用侧喂料挤出机添加聚乙烯蜡、聚丙烯蜡;
(2)在成型设备中加入共混粒子,并向成型设备中均匀注入氮气进行物理发泡挤压成型得到发泡线材;
(3)对发泡线材进行辐照处理,辐照强度为11MRa;
所述电缆绝缘料的辐照交联后拉伸强度为52MPa;辐照交联后断裂伸长率为158%。
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