CN106479031A - 一种电磁屏蔽复合包装材料及其制备方法 - Google Patents

一种电磁屏蔽复合包装材料及其制备方法 Download PDF

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CN106479031A
CN106479031A CN201610948932.8A CN201610948932A CN106479031A CN 106479031 A CN106479031 A CN 106479031A CN 201610948932 A CN201610948932 A CN 201610948932A CN 106479031 A CN106479031 A CN 106479031A
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金福英
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Jiangsu Taiter New Material Technology Co ltd
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Abstract

本发明提供了一种电磁屏蔽复合包装材料及其制备方法。由以下成分以重量份制备而成:聚偏二氯乙烯、线性低密度聚乙烯、乙烯‑乙烯醇共聚物、Ni‑Zn软磁铁氧体、不锈钢纤维、导电玻璃纤维、银包铜粉、乙撑双硬脂酰胺、硬脂酸正丁酯、氢氧化镁、膦酸酯、聚丙烯酸酯、乙烯‑醋酸乙烯共聚物。由以下步骤制备而成:(1)将所有组分混合,加入高速混合机中在转速3000‑4000r/min下混合5‑10分钟;(2)经双螺杆挤出机挤出造粒;(3)经吹膜机吹膜即得,吹膜温度为170‑200℃。本发明的一种电磁屏蔽复合包装材料具有很好的力学性能,电磁屏蔽效果佳,同时具有卓越的阻燃性能。

Description

一种电磁屏蔽复合包装材料及其制备方法
技术领域
本发明涉及包装材料领域,具体涉及一种电磁屏蔽复合包装材料及其制备方法。
背景技术
随着电子化、信息化的迅猛发展,电磁波作为信息传播的重要载体,已经渗入了我们生活的各个方面,电子电气设备已越来越广泛地应用于国民经济以及家庭生活的各个领域,例如电视、电话、微波通讯等都与电磁波息息相关。这些电磁辐射同时又制约着人们的生产和生活,导致人类生存空间的电磁环境日益恶化,它不仅影响各种电子设备的正常运行,造成电磁干扰及信息泄露,危及国家信息和军事核心机密的安全,而且直接危害到人类的身体健康。由于电磁辐射看不见、摸不着,充斥整个人类生活的空间,令人防不胜防,成为一种继水污染、大气污染和噪声污染之后的第四污染源。因此,为防止电磁辐射危害,保护人们身心健康,开展电磁波屏蔽包装材料的研究对于我国经济的可持续发展,环境的保护以及人类的健康生活都具有重要的意义。
发明内容
要解决的技术问题:本发明的目的是提供一种电磁屏蔽复合包装材料,具有很好的力学性能,电磁屏蔽效果佳,同时具有卓越的阻燃性能。
技术方案:一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯10-30份、线性低密度聚乙烯30-50份、乙烯-乙烯醇共聚物15-30份、Ni-Zn软磁铁氧体5-10份、不锈钢纤维4-8份、导电玻璃纤维2-5份、银包铜粉5-10份、乙撑双硬脂酰胺1-2份、硬脂酸正丁酯1-3份、氢氧化镁0.4-0.8份、膦酸酯0.2-0.5份、聚丙烯酸酯1-3份、乙烯-醋酸乙烯共聚物2-5份。
进一步优选的,所述的一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯15-25份、线性低密度聚乙烯35-45份、乙烯-乙烯醇共聚物20-25份、Ni-Zn软磁铁氧体6-9份、不锈钢纤维5-7份、导电玻璃纤维3-4份、银包铜粉6-9份、乙撑双硬脂酰胺1.2-1.8份、硬脂酸正丁酯1.5-2.5份、氢氧化镁0.5-0.7份、膦酸酯0.3-0.4份、聚丙烯酸酯1.5-2.5份、乙烯-醋酸乙烯共聚物3-4份。
上述易降解包装材料的制备方法包括以下步骤:
(1) 将所有组分混合,加入高速混合机中在转速3000-4000r/min下混合5-10分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为170-210℃,转速为35-45r/min;
(3) 经吹膜机吹膜即得,吹膜温度为170-200℃。
进一步优选的,步骤(1)中转速为3500r/min,搅拌时间为6-9分钟。
进一步优选的,步骤(2)中各区温度为180-200℃,转速为40r/min。
进一步优选的,步骤(3)中吹膜温度为180-190℃。
有益效果:本发明的一种电磁屏蔽复合包装材料,具有很好的力学性能,其拉伸强度和断裂伸长率分别最高可达18.8MPa和19.6%,电磁屏蔽效能为69Bb,屏蔽效果佳,同时其垂直燃烧等级UL-94也可达到V-0级,具有卓越的阻燃性能。
具体实施方式
实施例1
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯10份、线性低密度聚乙烯30份、乙烯-乙烯醇共聚物15份、Ni-Zn软磁铁氧体5份、不锈钢纤维4份、导电玻璃纤维2份、银包铜粉5份、乙撑双硬脂酰胺1份、硬脂酸正丁酯1份、氢氧化镁0.4份、膦酸酯0.2份、聚丙烯酸酯1份、乙烯-醋酸乙烯共聚物2份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速3000r/min下混合5分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为170℃,转速为35r/min;
(3) 经吹膜机吹膜即得,吹膜温度为170℃。
实施例2
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯15份、线性低密度聚乙烯35份、乙烯-乙烯醇共聚物20份、Ni-Zn软磁铁氧体6份、不锈钢纤维5份、导电玻璃纤维3份、银包铜粉6份、乙撑双硬脂酰胺1.2份、硬脂酸正丁酯1.5份、氢氧化镁0.5份、膦酸酯0.3份、聚丙烯酸酯1.5份、乙烯-醋酸乙烯共聚物3份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速3500r/min下混合6分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为180℃,转速为40r/min;
(3) 经吹膜机吹膜即得,吹膜温度为180℃。
实施例3
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯20份、线性低密度聚乙烯40份、乙烯-乙烯醇共聚物22.5份、Ni-Zn软磁铁氧体7.5份、不锈钢纤维6份、导电玻璃纤维3.5份、银包铜粉7.5份、乙撑双硬脂酰胺1-2份、硬脂酸正丁酯2份、氢氧化镁0.6份、膦酸酯0.35份、聚丙烯酸酯2份、乙烯-醋酸乙烯共聚物3.5份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速3500r/min下混合7分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为190℃,转速为40r/min;
(3) 经吹膜机吹膜即得,吹膜温度为185℃。
实施例4
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯25份、线性低密度聚乙烯45份、乙烯-乙烯醇共聚物25份、Ni-Zn软磁铁氧体9份、不锈钢纤维7份、导电玻璃纤维4份、银包铜粉9份、乙撑双硬脂酰胺1.8份、硬脂酸正丁酯2.5份、氢氧化镁0.7份、膦酸酯0.4份、聚丙烯酸酯2.5份、乙烯-醋酸乙烯共聚物4份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速3500r/min下混合9分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为200℃,转速为40r/min;
(3) 经吹膜机吹膜即得,吹膜温度为190℃。
实施例5
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯30份、线性低密度聚乙烯50份、乙烯-乙烯醇共聚物30份、Ni-Zn软磁铁氧体10份、不锈钢纤维8份、导电玻璃纤维5份、银包铜粉10份、乙撑双硬脂酰胺2份、硬脂酸正丁酯3份、氢氧化镁0.8份、膦酸酯0.5份、聚丙烯酸酯3份、乙烯-醋酸乙烯共聚物5份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速4000r/min下混合10分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为210℃,转速为45r/min;
(3) 经吹膜机吹膜即得,吹膜温度为200℃。
对比例1
本实施例与实施例1的区别在于不含有Ni-Zn软磁铁氧体和银包铜粉。具体地说是:
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯10份、线性低密度聚乙烯30份、乙烯-乙烯醇共聚物15份、不锈钢纤维4份、导电玻璃纤维2份、乙撑双硬脂酰胺1份、硬脂酸正丁酯1份、氢氧化镁0.4份、膦酸酯0.2份、聚丙烯酸酯1份、乙烯-醋酸乙烯共聚物2份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速3000r/min下混合5分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为170℃,转速为35r/min;
(3) 经吹膜机吹膜即得,吹膜温度为170℃。
对比例2
本实施例与实施例1的区别在于不含有不锈钢纤维和导电玻璃纤维。具体地说是:
一种电磁屏蔽复合包装材料,由以下成分以重量份制备而成:聚偏二氯乙烯10份、线性低密度聚乙烯30份、乙烯-乙烯醇共聚物15份、Ni-Zn软磁铁氧体5份、银包铜粉5份、乙撑双硬脂酰胺1份、硬脂酸正丁酯1份、氢氧化镁0.4份、膦酸酯0.2份、聚丙烯酸酯1份、乙烯-醋酸乙烯共聚物2份。
上述易降解包装材料的制备方法为:
(1) 将所有组分混合,加入高速混合机中在转速3000r/min下混合5分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为170℃,转速为35r/min;
(3) 经吹膜机吹膜即得,吹膜温度为170℃。
本发明的复合包装材料的各项性能指标见下表,我们可以看到本发明材料具有很好的力学性能,其拉伸强度和断裂伸长率分别最高可达18.8MPa和19.6%,电磁屏蔽效能为69Bb,屏蔽效果佳,同时其垂直燃烧等级UL-94也可达到V-0级,具有卓越的阻燃性能。对比例1中不含有Ni-Zn软磁铁氧体和银包铜粉,其力学性能稍有下降,电磁屏蔽效能则有很大的降幅。对比例2中不含有不锈钢纤维和导电玻璃纤维,其力学性能有很大的下降,可能是掺杂的导电纤维能增强复合材料的韧性,其电磁屏蔽效能也有较大的降低。
表1 电磁屏蔽复合包装材料的各项性能指标

Claims (7)

1.一种电磁屏蔽复合包装材料,其特征在于:由以下成分以重量份制备而成:聚偏二氯乙烯10-30份、线性低密度聚乙烯30-50份、乙烯-乙烯醇共聚物15-30份、Ni-Zn软磁铁氧体5-10份、不锈钢纤维4-8份、导电玻璃纤维2-5份、银包铜粉5-10份、乙撑双硬脂酰胺1-2份、硬脂酸正丁酯1-3份、氢氧化镁0.4-0.8份、膦酸酯0.2-0.5份、聚丙烯酸酯1-3份、乙烯-醋酸乙烯共聚物2-5份。
2.根据权利要求1所述的一种电磁屏蔽复合包装材料,其特征在于:由以下成分以重量份制备而成:聚偏二氯乙烯15-25份、线性低密度聚乙烯35-45份、乙烯-乙烯醇共聚物20-25份、Ni-Zn软磁铁氧体6-9份、不锈钢纤维5-7份、导电玻璃纤维3-4份、银包铜粉6-9份、乙撑双硬脂酰胺1.2-1.8份、硬脂酸正丁酯1.5-2.5份、氢氧化镁0.5-0.7份、膦酸酯0.3-0.4份、聚丙烯酸酯1.5-2.5份、乙烯-醋酸乙烯共聚物3-4份。
3.如权利要求1所述的一种电磁屏蔽复合包装材料,其特征在于:所述的不锈钢纤维和导电玻璃纤维的直径在2-8μm。
4.权利要求1至2任一项所述的一种电磁屏蔽复合包装材料的制备方法,其特征在于:包括以下步骤:
(1) 将所有组分混合,加入高速混合机中在转速3000-4000r/min下混合5-10分钟;
(2) 经双螺杆挤出机挤出造粒,各区温度为170-210℃,转速为35-45r/min;
(3) 经吹膜机吹膜即得,吹膜温度为170-200℃。
5.根据权利要求4所述的一种电磁屏蔽复合包装材料的制备方法,其特征在于:所述步骤(1)中转速为3500r/min,搅拌时间为6-9分钟。
6.根据权利要求4所述的一种电磁屏蔽复合包装材料的制备方法,其特征在于:所述步骤(2)中各区温度为180-200℃,转速为40r/min。
7.根据权利要求4所述的一种电磁屏蔽复合包装材料的制备方法,其特征在于:所述步骤(3)中吹膜温度为180-190℃。
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