CN115262236A - 一种电磁防护服材料及其制备方法 - Google Patents
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Abstract
本发明涉及防护服材料技术领域,尤其涉及一种电磁防护服材料及其制备方法。所述电磁防护服材料由以下重量份的原料组成:热塑性聚氨酯120~130份、氢化丁腈橡胶35~45份、乙醇35~45份、硬脂酸钙20~30份、金属吸收剂50~70份、增韧剂2~4份、流平剂1~3份、表面活性剂6~10份、热稳定剂3~5份、抗静电剂2~3份、有机硅阻燃剂3~5份、钛锡碳4~6份;所述金属吸收剂为硝酸钆、氯化钯、羧基铁、碳酸镧的组合物。本发明通过加入钛锡碳,由于其独特的纳米层状的晶体结构,能有效吸收频率为5~15GHz的电磁辐射,从而有效地降低电磁辐射db值;其次,通过进一步添加六钛酸钾晶须,与钛锡碳构成独特的晶格共筑体系,有效地提高钛锡碳材料对电磁辐射的吸收。
Description
技术领域
本发明涉及防护服材料技术领域,尤其涉及一种电磁防护服材料及其制备方法。
背景技术
随着信息技术的飞速发展,电磁污染成为继水质污染、大气污染、噪声污染之后,被世界公认为第四大环境污染。研究结果表明,电磁污染对于人体的健康造成危害,电磁辐射对人体健康的影响程度与其所受到的辐射强度、积累的时间长短有关,电磁辐射对人体具有潜在危险。在超强电磁辐射的环境下工作生活过久、电磁波的干扰使人体组织内的分子原有的电场发生变化,使得细胞中的分子电场被破坏,细胞结构遭到损伤。此外,现实生活中的电磁辐射问题日益严重,对孕妇体内的胎儿的防护也十分必要。
目前,主要采取电磁屏蔽的形式抑制电磁辐射,分为反射型和吸收型两大类。传统的电磁防护服采用不锈钢、铜、银等导电纤维制作,属于反射型电磁屏蔽材料,即:将入射的电磁波反射回去,不让电磁波透射到织物的另一侧。防护服是穿在人体上的服装,无法做到完全密闭,领口、袖口等都是泄露电磁波的渠道。反射型电磁防护服可以阻止电磁波的进入,但一旦电磁波通过泄露点进入防辐射服内部,也同样难以出去,使得防护服变为一个电磁波收集器,可能会产生二次污染。
吸收型电磁屏蔽材料是将电磁波转化为热能消耗掉,既不透射,也不反射,在产业领域应用十分广泛,主要采用铁氧体、铁镍合金和非晶合金等粉末材料制作,在抑制电磁辐射的同时,也可以防止电磁波的二次污染。然而,粉末材料无法纺成电磁屏蔽织物;涂覆在织物表面又会造成性能的降低,且耐候性差。
基于上述情况,本发明提出了一种电磁防护服材料及其制备方法。
发明内容
本发明的目的在于提供一种电磁防护服材料及其制备方法。
为实现上述目的,本发明提供了一种电磁防护服材料,所述电磁防护服材料由以下重量份的原料组成:热塑性聚氨酯120~130份、氢化丁腈橡胶35~45份、乙醇35~45份、硬脂酸钙20~30份、金属吸收剂50~70份、增韧剂2~4份、流平剂1~3份、表面活性剂6~10份、热稳定剂3~5份、抗静电剂2~3份、有机硅阻燃剂3~5份、钛锡碳4~6份;所述金属吸收剂为硝酸钆、氯化钯、羧基铁、碳酸镧的组合物。
优选地,所述电磁防护服材料还含有六钛酸钾晶须5~10份。
优选地,所述钛锡碳的粒度为200目~400目。
钛锡碳(Ti2SnC)是由选择性蚀刻一个元素具有金属导电率的MAX相,通过强固的金属键、离子键和共价键连接分层的固体,又名碳化钛锡、锡碳化钛,购买自宁波金雷纳米材料科技有限公司。
优选地,所述硬脂酸盐为硬脂酸钙、硬脂酸镁的其中一种。
优选地,所述增韧剂为聚氧化丙烯二胺、邻苯二甲酸二辛酯的其中一种。
优选地,所述流平剂为byk306、byk320、byk378的其中一种。
优选地,所述表面活性剂为烷基聚氧乙烯醚。
优选地,所述热稳定剂为亚磷酸三丁酯。
优选地,所述抗静电剂为硬脂基辛基二甲基硫酸甲酯铵。
优选地,所述有机硅阻燃剂为聚硅硼氧烷。
本发明还提供了一种电磁防护服材料的制备方法,所述方法包括如下步骤:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以100~110rpm搅拌20~30min,随后以温度为90~95℃,压力为0.8~1MPa进行热压处理15~20min,接着以130~135℃,压力为1.5~2.0MPa热压处理40~45min,备用;
(2)将步骤(1)制得的混合料和六钛酸钾晶须放进开炼机上共混,温度为125~130℃混炼45~50min,制得共混料,备用;
(3)取氢化丁腈橡胶、钛锡碳、烷基聚氧乙烯醚、byk306混合,以温度为70~75℃、转速为120~130rpm搅拌1~1.5h,得到加热料,备用;
(4)将步骤(2)制得的共混料和步骤(3)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为60~65℃、搅拌速度为800~850rpm,搅拌3~3.5h,随后以85~90℃加热固化20~25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
与现有技术相比,本发明具有如下有益效果:
1.本发明通过加入钛锡碳,由于其独特的纳米层状的晶体结构,能有效吸收频率为5~15GHz的电磁辐射,从而有效地降低电磁辐射db值;其次,通过进一步添加六钛酸钾晶须,与钛锡碳构成独特的晶格共筑体系,有效地提高钛锡碳材料对电磁辐射的吸收。
2.本发明原材料在国内充足,价格适宜,使其规模化生产没有太高的成本限制;同时,制备方法简单,总体生产成本不高,有利于工业的大规模生产。
具体实施方式
实施例1
按表1称量具体原料,步骤制备步骤如下:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以100rpm搅拌30min,随后以温度为90℃,压力为0.8Pa进行热压处理20min,接着以130℃,压力为1.5MPa热压处理45min备用;
(2)将步骤(1)制得的混合料和六钛酸钾晶须放进开炼机上共混,温度为125℃混炼50min,制得共混料,备用;
(3)取氢化丁腈橡胶、钛锡碳、烷基聚氧乙烯醚、byk306混合,以温度为70℃、转速为120rpm搅拌1.5h,得到加热料,备用;
(4)将步骤(2)制得的共混料和步骤(3)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为60℃、搅拌速度为800rpm,搅拌3.5h,随后以85℃加热固化25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
实施例2
按表1称量具体原料,步骤制备步骤如下:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以110rpm搅拌20min,随后以温度为95℃,压力为1MPa进行热压处理15min,接着以130℃,压力为2.0MPa热压处理40min,备用;
(2)将步骤(1)制得的混合料和六钛酸钾晶须放进开炼机上共混,温度为130℃混炼45min,制得共混料,备用;
(3)取氢化丁腈橡胶、钛锡碳、烷基聚氧乙烯醚、byk306混合,以温度为775℃、转速为130rpm搅拌1h,得到加热料,备用;
(4)将步骤(2)制得的共混料和步骤(3)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为65℃、搅拌速度为850rpm,搅拌3h,随后以90℃加热固化20min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
实施例3
按表1称量具体原料,步骤制备步骤如下:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以110rpm搅拌30min,随后以温度为95℃,压力为1MPa进行热压处理20min,接着以135℃,压力为2.0MPa热压处理45min,备用;
(2)将步骤(1)制得的混合料和六钛酸钾晶须放进开炼机上共混,温度为130℃混炼50min,制得共混料,备用;
(3)取氢化丁腈橡胶、钛锡碳、烷基聚氧乙烯醚、byk306混合,以温度为75℃、转速为130rpm搅拌1.5h,得到加热料,备用;
(4)将步骤(2)制得的共混料和步骤(3)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为65℃、搅拌速度为850rpm,搅拌3.5h,随后以90℃加热固化25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
对比例1
按表1称量具体原料,与实施例3不同的是,不含有六钛酸钾晶须,步骤制备步骤如下:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以110rpm搅拌30min,随后以温度为95℃,压力为1MPa进行热压处理20min,接着以135℃,压力为2.0MPa热压处理45min,备用;
(2)取氢化丁腈橡胶、钛锡碳、烷基聚氧乙烯醚、byk306混合,以温度为75℃、转速为130rpm搅拌1.5h,得到加热料,备用;
(3)将步骤(1)制得的共混料和步骤(2)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为65℃、搅拌速度为850rpm,搅拌3.5h,随后以90℃加热固化25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
对比例2
按表1称量具体原料,与实施例3不同的是,不含有钛锡碳,步骤制备步骤如下:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以110rpm搅拌30min,随后以温度为95℃,压力为1MPa进行热压处理20min,接着以135℃,压力为2.0MPa热压处理45min,备用;
(2)将步骤(1)制得的混合料和六钛酸钾晶须放进开炼机上共混,温度为130℃混炼50min,制得共混料,备用;
(3)取氢化丁腈橡胶、烷基聚氧乙烯醚、byk306混合,以温度为75℃、转速为130rpm搅拌1.5h,得到加热料,备用;
(4)将步骤(2)制得的共混料和步骤(3)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为65℃、搅拌速度为850rpm,搅拌3.5h,随后以90℃加热固化25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
对比例3
按表1称量具体原料,与实施例3不同的是,不含有钛锡碳和六钛酸钾晶须,步骤制备步骤如下:
(1)取热塑性聚氨酯、硬脂酸钙、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以110rpm搅拌30min,随后以温度为95℃,压力为1MPa进行热压处理20min,接着以135℃,压力为2.0MPa热压处理45min,备用;
(2)取氢化丁腈橡胶、烷基聚氧乙烯醚、byk306混合,以温度为75℃、转速为130rpm搅拌1.5h,得到加热料,备用;
(3)将步骤(1)制得的共混料和步骤(2)制得加热料放进搅拌机内,随后加入聚氧化丙烯二胺、亚磷酸三丁酯、硬脂基辛基二甲基硫酸甲酯铵、聚硅硼氧烷,以温度为65℃、搅拌速度为850rpm,搅拌3.5h,随后以90℃加热固化25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
表1
实施例4屏蔽性能测试
采用实施例1~3和对比例1~3制备所得的防护服材料熔喷在基布层上,自然冷却后形成防护层,进行拉伸强度、断裂伸长率、屏蔽性能(GJB 6190 2008)等性能测试。评价结果见表2。
表2性能测试结果
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式,并且很显然,根据上述教导,可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用,从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。
Claims (10)
1.一种电磁防护服材料,其特征在于,所述电磁防护服材料由以下重量份的原料组成:热塑性聚氨酯120~130份、氢化丁腈橡胶35~45份、乙醇35~45份、硬脂酸钙20~30份、金属吸收剂50~70份、增韧剂2~4份、流平剂1~3份、表面活性剂6~10份、热稳定剂3~5份、抗静电剂2~3份、有机硅阻燃剂3~5份、钛锡碳4~6份;所述金属吸收剂为硝酸钆、氯化钯、羧基铁、碳酸镧的组合物。
2.根据权利要求1所述的电磁防护服材料,其特征在于,所述电磁防护服材料还含有六钛酸钾晶须5~10份。
3.根据权利要求1所述的电磁防护服材料,其特征在于,所述钛锡碳的粒度为200目~400目。
4.根据权利要求1所述的电磁防护服材料,其特征在于,所述硬脂酸盐为硬脂酸钙、硬脂酸镁的其中一种。
5.根据权利要求1所述的电磁防护服材料,其特征在于,所述增韧剂为聚氧化丙烯二胺、邻苯二甲酸二辛酯的其中一种。
6.根据权利要求1所述的电磁防护服材料,其特征在于,所述流平剂为byk306、byk320、byk378的其中一种。
7.根据权利要求1所述的电磁防护服材料,其特征在于,所述表面活性剂为烷基聚氧乙烯醚。
8.根据权利要求1所述的电磁防护服材料,其特征在于,所述热稳定剂为亚磷酸三丁酯。
9.根据权利要求1所述的电磁防护服材料,其特征在于,所述抗静电剂为硬脂基辛基二甲基硫酸甲酯铵;所述有机硅阻燃剂为聚硅硼氧烷。
10.一种制备权利要求1~9所述的电磁防护服材料的方法,其特征在于,所述方法由如下步骤组成:
(1)取热塑性聚氨酯、硬脂酸盐、乙醇、硝酸钆、氯化钯、羧基铁、碳酸镧,放进搅拌机内搅拌混合,以100~110rpm搅拌20~30min,随后以温度为90~95℃,压力为0.8~1MPa进行热压处理15~20min,接着以130~135℃,压力为1.5~2.0MPa热压处理40~45min,备用;
(2)将步骤(1)制得的混合料和六钛酸钾晶须放进开炼机上共混,温度为125~130℃混炼45~50min,制得共混料,备用;
(3)取氢化丁腈橡胶、钛锡碳、表面活性剂、流平剂混合,以温度为70~75℃、转速为120~130rpm搅拌1~1.5h,得到加热料,备用;
(4)将步骤(2)制得的共混料和步骤(3)制得加热料放进搅拌机内,随后加入增韧剂、热稳定剂、抗静电剂、有机硅阻燃剂,以温度为60~65℃、搅拌速度为800~850rpm,搅拌3~3.5h,随后以85~90℃加热固化20~25min,最后放进双螺杆挤出机塑化、熔融、挤出、拉条、冷却和切粒,即得。
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