CN112064334A - 一种对棉纱线进行抗辐射预处理的方法 - Google Patents

一种对棉纱线进行抗辐射预处理的方法 Download PDF

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CN112064334A
CN112064334A CN202010960932.6A CN202010960932A CN112064334A CN 112064334 A CN112064334 A CN 112064334A CN 202010960932 A CN202010960932 A CN 202010960932A CN 112064334 A CN112064334 A CN 112064334A
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cotton yarn
cotton
electromagnetic shielding
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何新华
徐汕文
蔡先彪
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Hunan Kelijia Textile Co ltd
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Abstract

本发明公开了一种对棉纱线进行抗辐射预处理的方法,其以棉纱线作为原料,首先进行高温蒸汽预定型,并在定型冷却后进行热水预浸泡,晾干后顺次在温水中顺次加入渗透剂FKS、氢氧化钠、醋酸以及羧甲基纤维素进行两阶段变温浸泡;浸泡完成后通过丝胶和香草醛接枝壳聚糖的乙酸溶液进行分散处理将银离子和电磁屏蔽材料进行超声辅助分散,分散完成后取出棉纱线,用流水冲洗掉表面的浮浆后晾干,再在其表面喷涂雾化聚乙烯吡咯烷酮溶液后成型。本发明能使得棉纱线具有一定的抗辐射性能,同时在织造成织物后具有较佳的二次抗辐射加工性能,以提高金属基抗辐射材料在织物表面的结合性能。

Description

一种对棉纱线进行抗辐射预处理的方法
技术领域
本发明涉及纺织材料技术领域中的纱线制备技术,具体涉及一种对棉纱线进行抗辐射预处理的方法。
背景技术
随着人们生活水平的提高,人们对消费品的要求也越来越高,其中,对于织物产品的要求,已经从最开始追求的保暖向舒适、美观、有益健康等功能性方向发展,功能性纺织品应运而生,而各种具有不同功能特性的功能性织物产品也被不断开发出来。
在人们的生活以及工作环境中,经常会涉及到电磁辐射,常见的电磁设备以及电子仪器、医疗设备、办公自动化设备和微波炉、收音机、电视机以及手机等移动通讯设备工作时都会产生,而对人体危害较大的主要为短波、超短波及微波频段,这些波段在内的电磁辐射射线对人体有一定的损害,长期暴露在超过国家规定的安全的辐射剂量下的人体,神经系统、心血管系统、内分泌系统、生殖系统、免疫系统等都会受到不同程度的伤害。而在进行电磁辐射防护时,防电磁辐射纱线以及纱线编织成的相关织物被应用较多,这种织物采用特定的原理与方法成型,具有织物天然透气性、柔软的特性的同时具有电磁防护性能,当织物受外界电磁波作用时产生感应电流,相应产生与外界磁场反方向的磁场,从而与外界磁场相抵消,达到对外界电磁场的屏蔽作用,被广泛应用于老人、儿童、孕妇属于对电磁辐射的敏感人群以及特殊工业的从业人员的服饰制备中,也可以用于对设备进行覆盖保护。
但现有技术中常见的防辐射织物通常为涂覆法或者是浸泡法成型,将传统的纱线或者织物作为基底材料在其表面涂覆一层导电高分子涂层或者直接将传统的纱线或者织物作为基底材料浸泡在分散好的导电高分子材料溶液中但是这两种成型方式中对产品的存放要求高,洗涤的时候不能用力进行揉、搓、拧等操作,晾干后也不能折叠,否则会降低防电磁辐射的屏蔽性能和使用寿命;如果能对纱线原料进行处理使其富含一定量的导电物质,可以在后续加工过程中,为制备抗辐射面料提供帮助。
发明内容
本发明所解决的技术问题在于提供一种对棉纱线进行抗辐射预处理的方法,以解决上述技术背景中的缺陷。
本发明所解决的技术问题采用以下技术方案来实现:
一种对棉纱线进行抗辐射预处理的方法,具体包括以下操作步骤:
S1以棉纱线作为原料加入85~90℃的热水中进行浸泡预处理10~15min,浸泡预处理完成后取出自然晾干;
S2将步骤1中晾干的棉纱线加入容器中,一并加入40~45℃的温水并保持,按照容器内用水量,顺次加入0.5~1g/L的渗透剂FKS、2~3g/L的氢氧化钠、10~30ml/L的1mol/L的醋酸以及0.3~0.5g/L的羧甲基纤维素,上述药剂顺次加入,且加入间隔不少于5min,在羧甲基纤维素加入后将水温提至90~95℃,保持30~45min,使得棉纱线得到充分的浸泡,然后将浸泡完成后的棉纱线取出,晾干;
S3将丝胶与乙酰化程度≥70%的香草醛接枝壳聚糖加入1%的乙酸,搅拌使之完全溶解,依次加入20~30g/L的聚乙烯醇以及0.3~0.5g/L羟甲基纤维素,制成粘稠状的混合物溶液,然后缓慢加入1~2mol/L的硝酸银溶液,控制最终混合物溶液中硝酸银浓度为0.3~0.5mol/L;然后加入电磁屏蔽材料、苯胺单体以及步骤S2处理后的棉纱线进行超声辅助分散;
S4分散完成后取出棉纱线,用流水冲洗掉表面的浮浆,然后晾干,并在晾干后的棉纱线表面喷涂一层雾化聚乙烯吡咯烷酮溶液进行稳定,晾干后即得到处理后的棉纱线。
作为进一步限定,所述棉纱线优选采用新海13号长绒棉、埃及吉扎70号长绒棉、新海46号长绒棉纱线。
作为进一步限定,在步骤S1中进行热水中进行浸泡处理时可一并加入磺化油或者环烷油或丙酮作为软化剂进行软化处理。
作为进一步限定,在步骤S2中所述容器中的加水量为容器容积的70~90%且在容器中的棉纱线的加料量以被水完全覆盖为准。
作为进一步限定,在步骤S3中,所述丝胶的加入量为20~30g/L、而香草醛接枝壳聚糖的加入量为15~30g/L。
作为进一步限定,在步骤S3中,所述电磁屏蔽材料为纳米铜粉、纳米银粉以及纳米聚苯胺电磁屏蔽粉末的比例混合物,且所述比例混合物中,纳米铜粉与纳米银粉的质量比为2:1~3:1,而纳米聚苯胺电磁屏蔽粉末的质量占比不小于7%。
作为进一步限定,在步骤S3中,所述电磁屏蔽材料的加入量为混合物溶液质量的5~10%,而所述苯胺单体的加入量为混电磁屏蔽材料质量的50%~80%。
作为进一步限定,在步骤S4中,聚乙烯吡咯烷酮溶液为质量比为3~5%的聚乙烯吡咯烷酮水溶液。
有益效果:本发明的棉纱线抗辐射预处理具有工艺简单、制备方便快捷的优点,其处理后的棉纱线具有一定的抗辐射性能,且在利用该处理工艺处理后的棉纱线制作织物时,其制备的织物在利用金属基抗辐射材料进行涂覆法处理或者是浸泡法处理时,均能获得比直接浸泡或者直接涂覆时更加的抗辐射处理效果,且在利用金属基抗辐射材料进行涂覆法处理时,其涂层与织物面层的贴合性更好,不易脱落。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
在下述实施例中,本技术领域技术人员可以理解,除非另外定义,这里使用的所有术语(包括技术术语和科学术语)具有与本申请所属领域中的普通技术人员的一般理解相同的意义。还应该理解的是,诸如通用字典中定义的那些术语应该被理解为具有与现有技术的上下文中的意义一致的意义,并且除非像这里一样定义,不会用理想化或过于正式的含义来解释。
在本实施例中,对棉纱线进行抗辐射预处理的方法按照以下步骤制备:
待加工的棉纱线以新海13号长绒棉通过环锭纺成型,将棉纱线作为原料加入85~90℃的热水中预处理10~15min,并将浸泡过程中加入丙酮作为软化剂进行软化处理,并在浸泡预处理完成后取出自然晾干;上述操作可以使得长绒棉吸水泡涨,并通过软化剂的加入使得长绒棉的棉纱线纤维软化并打开,而在实施例中,选用90℃的热水处理12min。
然后将自然晾干的棉纱线加入容器中,一并加入水,其中,加水量为容器容积的80%,并完全覆盖棉纱线,对容器加热并保持在40~42℃,并以容器内用水量作为参照量,加入渗透剂FKS,渗透剂FKS的加入量为0.8g/L,5min后加入氢氧化钠,氢氧化钠的加入量为2.5g/L、8min后加入的醋酸,醋酸为1mol/L的醋酸水溶液,加入量为20ml/L,10min后加入羧甲基纤维素,羧甲基纤维素的加入量为0.4g/L,羧甲基纤维素加入后将容器中的水温提至90℃,保持40min,使得棉纱线得到充分的浸泡,然后将浸泡完成后的棉纱线取出,晾干。上述操作步骤主要用于对棉纱线进行改性,提高棉纱线的渗透性能来方便后续操作中利用丝胶和香草醛接枝壳聚糖作为介质将电磁屏蔽材料分散到棉纱线内部,并通过苯胺单体在棉纱线中吸收并固定在棉纱棉中的电磁屏蔽材料,同时还能保证棉纱线具有较佳的手感和表面性能,以方便在织造成织物时的织物表面性能。
将丝胶以25g/L的标准加入1%的乙酸水溶液中,一并加入乙酰化程度为84%的香草醛接枝壳聚糖20g/L,搅拌使之完全溶解,然后顺次加入25g/L的聚乙烯醇以及0.4g/L羟甲基纤维素,制成粘稠状的混合物溶液,然后缓慢滴加1mol/L的硝酸银溶液,并最终控制混合物溶液中硝酸银浓度为0.4mol/L。然后加入纳米铜粉、纳米银粉以及纳米聚苯胺电磁屏蔽粉末的质量比5:2:1的比例混合物作为电磁屏蔽材料,控制电磁屏蔽材料的加入量为混合物溶液质量的8%;同时加入占混电磁屏蔽材料质量的60%的苯胺单体,分散均匀后再将经过上述步骤处理的棉纱线加入上述混合物中,用200w的功率条件下进行超声辅助分散,分散40min。
在上述步骤中,丝胶是蚕丝纤维外层起胶黏作用的组织蛋白,富含羟基、羧基、氨基以及巯基等官能团,对金属离子有较强的吸附性;而香草醛接枝壳聚糖中的香草醛与纳米铜粉均可以还原硝酸银,而通过与香草醛还原的硝酸银被壳聚糖嵌合,在香草醛接枝壳聚糖与丝胶混合并分散均匀后得到均匀分散于壳聚糖中的纳米银粒子,丝胶吸附游离的铜离子和银离子,上述高导电因子在分散过程中被棉纱线吸收并稳定在棉纱线内部,而纳米聚苯胺电磁屏蔽粉末则附于棉纱线表面,并通过苯胺单体稳定,从而形成了整体具有较佳屏蔽性能的棉纱线,而丝胶与壳聚糖与棉纱线都具有较佳的嵌合型,能在干燥后保持较长时间的稳定性。
分散完成后取出棉纱线,用流水冲洗掉表面的浮浆,其主要是将有害的苯胺单体进行洗除,流水冲洗操作能有效极大棉纱线表面苯胺单体的量,使其处于安全范围内,冲洗掉表面的浮浆后晾干,并在晾干后的棉纱线表面喷涂一层质量比为4%的雾化聚乙烯吡咯烷酮水溶液进行稳定,稳定后晾干后即得到处理后的棉纱线。
为了表征上述操作步骤和实际的重要性,以本申请文件的操作步骤的方案作为实施例一,以某一特定操作步骤缺失和特定试剂的缺失的方案作为实施例二、实施例三、实施例四、实施例五,将上述例子中的纱线织成织物测量织物对电磁波的屏蔽效能(SE),该屏蔽效能(SE)的测试根据GB/T23463-2009《防护服装微波辐射防护服》进行,以未穿着织物的模型作为对比组测量电场强度E0,以穿着织物的模型作为实验组测量电场强度E1,再计算屏蔽效能SE=20lg(E0/E1)进行列表,其结果如下:
Figure BDA0002680525360000051
Figure BDA0002680525360000061
由上表可以看出,经过本发明的实施例的操作步骤操作,成型后的织物具有一定的抗辐射屏蔽性能,其抗辐射屏蔽性能主要受到多重因素影响,在上述实施例中,实施例一的条件下,经过处理的棉纱线织成的织物在选定范围内的表现抗辐射性能的屏蔽能效在进行多次洗涤(参考10次)以及潮湿空气中放置30天后,依然能保持较佳的稳定性。而实施例二~实施例五的条件下,经过处理的棉纱线织成的织物在选定范围内的表现抗辐射性能的屏蔽能效均由不同程度的下降。这是因为加入渗透剂FKS、氢氧化钠、醋酸以及羧甲基纤维素的两段式变温水浸泡操作主要是为了提高丝胶与香草醛接枝壳聚糖的混合物浆料超声辅助分散的效果,若缺少上述两段式变温水浸泡操作,会减少丝胶与香草醛接枝壳聚糖的渗入比例,进而影响电磁屏蔽材料的渗入量,进而影响电磁屏蔽性能,而丝胶与香草醛接枝壳聚糖的混合物浆料中的任意一种丝胶或者香草醛接枝壳聚糖的缺失,都会直接影响该部分介质所含有的电磁屏蔽材料在棉纱线中的渗入量,进而影响电磁屏蔽效果,而苯胺单体则能在棉纱线表面形成一层保护膜层,能很大程度避免电磁屏蔽材料被水洗、物理摩擦、体液污染等因素影响。
另外,由于丝胶与香草醛接枝壳聚糖的混合物浆料超声辅助分散则主要是本发明的实施例对棉纱线的改性操作,还能有效改善棉纱线对外加电磁屏蔽材料的吸附和键合,形成稳定嵌合结构,为了表征实施例一技术条件下的棉纱线的可加工性能,分别以实施例一的织物以及未经过处理的相同棉纱线作为对比例作为基材,以市售同款含有金属基电磁屏蔽材料的抗辐射织物浸润剂和同款含有金属基电磁屏蔽材料的抗辐射织物涂层分别进行浸润和涂层处理,然后以上述的同样方式测量织物对电磁波的屏蔽效能(SE),以未穿着织物的模型作为对比组测量电场强度E0,以穿着织物的模型作为实验组测量电场强度E1,再计算屏蔽效能SE=20lg(E0/E1)进行列表,其结果如下:
Figure BDA0002680525360000071
由上表可以看出,本申请文件的实施例的棉纱线在制成织物后对于含有金属基电磁屏蔽材料的抗辐射织物浸润剂和抗辐射织物涂层剂均具有较佳的亲和性,相比于未经过处理的相同棉纱线,其抗电磁屏蔽性能有明显的提升,同时,具有较强的稳定性,洗涤10次后屏蔽效能的下降比例要明显低于未经过处理的相同棉纱线,依然能保持较佳的稳定性。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (9)

1.一种对棉纱线进行抗辐射预处理的方法,其特征在于,具体包括以下操作步骤:
S1以棉纱线作为原料加入85~90℃的热水中进行浸泡预处理10~15min,浸泡预处理完成后取出自然晾干;
S2将步骤1中晾干的棉纱线加入容器中,一并加入40~45℃的温水并保持,按照容器内用水量,顺次加入0.5~1g/L的渗透剂FKS、2~3g/L的氢氧化钠、10~30ml/L的1mol/L的醋酸以及0.3~0.5g/L的羧甲基纤维素,上述药剂顺次加入,且加入间隔不少于5min,在羧甲基纤维素加入后将水温提至90~95℃,保持30~45min,使得棉纱线得到充分的浸泡,然后将浸泡完成后的棉纱线取出,晾干;
S3将丝胶与乙酰化程度≥70%的香草醛接枝壳聚糖加入1%的乙酸,搅拌使之完全溶解,依次加入20~30g/L的聚乙烯醇以及0.3~0.5g/L羟甲基纤维素,制成粘稠状的混合物溶液,然后缓慢加入1~2mol/L的硝酸银溶液,控制最终混合物溶液中硝酸银浓度为0.3~0.5mol/L;然后加入电磁屏蔽材料、苯胺单体以及步骤S2处理后的棉纱线进行超声辅助分散;
S4分散完成后取出棉纱线,用流水冲洗掉表面的浮浆,然后晾干,并在晾干后的棉纱线表面喷涂一层雾化聚乙烯吡咯烷酮溶液进行稳定,晾干后即得到处理后的棉纱线。
2.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述棉纱线为采用新海13号长绒棉、埃及吉扎70号长绒棉、新海46号长绒棉制成的棉纱线。
3.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S1中进行热水中进行浸泡处理时加入磺化油或者环烷油或丙酮作为软化剂进行软化处理。
4.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S2中容器中的加水量为容器容积的70~90%,且在容器中的棉纱线的加料量以被水完全覆盖为准。
5.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S3中,所述丝胶的加入量为20~30g/L、而所述香草醛接枝壳聚糖的加入量为15~30g/L。
6.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S3中加入的所述电磁屏蔽材料为纳米铜粉、纳米银粉以及纳米聚苯胺电磁屏蔽粉末的比例混合物,且所述比例混合物中,纳米铜粉与纳米银粉的质量比为2:1~3:1,纳米聚苯胺电磁屏蔽粉末的质量占比不小于7%。
7.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S3中电磁屏蔽材料的加入量为混合物溶液质量的5~10%,而苯胺单体的加入量为混电磁屏蔽材料质量的50%~80%。
8.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S3中进行超声辅助分散时控制超声功率为200~300w,分散时间为40~60min。
9.根据权利要求1所述的对棉纱线进行抗辐射预处理的方法,其特征在于,所述步骤S4中用于雾化喷淋的聚乙烯吡咯烷酮溶液为质量比为3~5%的聚乙烯吡咯烷酮水溶液。
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CN112981959A (zh) * 2020-12-17 2021-06-18 吴江精美峰实业有限公司 一种溶胶型导电聚酯纤维及其制备方法
CN116084167A (zh) * 2022-12-26 2023-05-09 扬州锦沃科技有限公司 一种防电磁辐射防护服面料及其制备方法

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CN112981959A (zh) * 2020-12-17 2021-06-18 吴江精美峰实业有限公司 一种溶胶型导电聚酯纤维及其制备方法
CN112981959B (zh) * 2020-12-17 2023-02-03 吴江精美峰实业有限公司 一种溶胶型导电聚酯纤维及其制备方法
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CN116084167B (zh) * 2022-12-26 2023-10-27 扬州锦沃科技有限公司 一种防电磁辐射防护服面料及其制备方法

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