CN120865111B - 一种抗静电医用纱布及其制备方法 - Google Patents
一种抗静电医用纱布及其制备方法Info
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Abstract
本发明公开一种抗静电医用纱布及其制备方法,涉及到医用纱布技术领域。所述抗静电医用纱布包括以下质量份的原料:棉纤维60‑80份、抗静电剂()1‑5份、水溶性聚合物5‑15份、抗菌剂0.5‑1份。与传统技术中抗静电效果短暂、易受环境因素影响相比,本发明通过引入特定小分子抗静电剂(如式1所示化合物),结合吸湿导电机理、离子化作用和表面能调节,实现了长效稳定的电荷中和能力。这一趋势体现为静电消散更快且效果持久,有效避免电荷积累导致的安全隐患和灰尘吸附问题,克服了现有技术中抗静电剂效果不持久的缺点。
Description
技术领域
本发明涉及到医用纱布技术领域,具体涉及到一种抗静电医用纱布及其制备方法。
背景技术
在现代医疗环境中,医用纱布作为常见的医疗用品,广泛应用于伤口护理、手术敷料以及各种医疗操作中。然而,传统的医用纱布在实际应用中存在一个显著问题——静电积累。静电不仅会使得纱布在使用过程中吸附尘埃和微生物,降低其清洁效果,还可能对人体造成不适,甚至在某些特定情况下引发安全隐患。
这种静电现象在干燥环境中尤为严重,尤其是在医院的手术室、重症监护病房等对环境要求极高的场所。静电可能干扰医疗设备的正常运行,甚至在极端情况下对患者和医护人员构成潜在威胁。此外,传统医用纱布在抗菌性能和舒适性方面也存在不足,无法满足现代医疗对多功能材料的迫切需求。
目前,常见的解决静电问题的方法包括添加抗静电剂或采用表面处理技术。然而,这些方法往往存在效果短暂、加工条件复杂或成本较高等缺点,难以在医用纱布领域得到广泛应用。因此,开发一种兼具抗静电、抗菌和舒适性的新型医用纱布,对于提升医疗质量和患者体验具有重要意义。
发明内容
本发明旨在提供一种兼具抗静电、抗菌和舒适性的多功能医用纱布,通过引入小分子抗静电剂和高效抗菌剂,并优化棉纤维长度及编织工艺,显著降低静电危害,提高抗菌性能,同时提升使用体验。
为实现上述目的,本发明采用的技术方案是:一种小分子抗静电剂,所述抗静电剂为式1所示的化合物:
式1:;
所述式1中的R1选自:氰基、碳原子数在1-5的烷基;
或R1选自:被氰基、羟基取代的碳原子数在1-5的烷基。
进一步,所述碳原子数在1-5的烷基选自:甲基、乙基、丙基。
进一步,所述抗静电剂为下述结构所示的化合物中的任意一种:
;
。
一种抗静电医用纱布,所述抗静电医用纱布中包括抗静电剂。
进一步,所述抗静电医用纱布包括以下质量份的原料:棉纤维60-80份、抗静电剂1-5份、水溶性聚合物5-15份、抗菌剂0.5-1份;
所述抗静电剂为式1所述的化合物。
进一步,所述棉纤维为精梳棉,纤维长度在25-35mm。
进一步,所述水溶性聚合物选自聚乙烯醇或羧甲基纤维素钠。
进一步,所述抗菌剂选自十六烷基三甲基溴化铵或苯扎氯铵。
一种抗静电医用纱布的制备方法,包括以下步骤:
(1)将所述抗静电剂、水溶性聚合物和抗菌剂混合于水中,形成溶液A;
(2)将所述棉纤维浸渍于所述溶液A中,确保充分渗透,得浸泡棉纤维;
(3)将所述浸泡棉纤维在40-65℃下烘干,制备得到改性棉纤维;
(4)将所述改性棉纤维进行编织,制成医用纱布。
进一步,所述步骤(4)中的编织采用圆编织机或平织机,编织成平纹结构或网孔结构的医用纱布,其中网孔密度为10-20目/平方厘米。
本发明所述的抗静电剂的抗静电剂机制主要包括:吸湿导电机理、离子化作用和表面能调节。分子结构中的三嗪基作为分子核心,为一个富电子杂环结构,具有强极性和氢键形成能力。能有效吸附环境中的水分,形成一层薄水膜。这层水膜作为导体,可快速消散静电荷(静电积累的主要原因是材料绝缘性导致的电荷滞留)。同时三嗪基,其环状结构提供稳定性,确保抗静电效果长效持久,克服了传统抗静电剂“效果短暂”的缺点。羟基(-OH)和羧酸基(-COOH)是强亲水性基团,可在水溶液中电离。羟基通过氢键增强水分吸附,而羧酸基则电离生成羧酸根离子和质子,形成离子通道。这些离子在材料表面或内部迁移,显著提高导电性(电阻降低),从而中和静电荷。结构中的烷烃链赋予抗静电剂一定的疏水性,使其能均匀分散在棉纤维表面。同时,烷烃链与棉纤维的天然疏水区域相容,降低界面能,促进抗静电剂在纤维上的均匀包覆。这层包覆膜形成“导电网状结构”,不仅中和静电,还增强纱布的机械强度和耐磨性。
小分子抗静电剂作为核心组分,抗静电剂负责直接解决静电积累问题,其结构(如式1所示)通过吸湿导电机理、离子化作用和表面能调节,长效中和静电荷,避免电荷滞留。棉纤维作为纱布的主体,提供舒适性和透气性基础。精梳棉纤维长度适中(25-35mm),确保纱布柔软、透气,减少患者不适。在制备过程中,棉纤维浸渍于抗静电剂溶液中,纤维表面天然疏水区域与抗静电剂的烷烃链相容,促进均匀包覆。这增强了导电网状结构的形成,同时不损害纤维的天然舒适性。棉纤维的物理结构(如纤维长度)为抗静电剂和抗菌剂提供了稳定的载体,确保组分协同作用。水溶性聚合物主要作为载体和粘合剂。水溶性聚合物与抗静电剂、抗菌剂混合于水中形成溶液A,其水溶性特性帮助抗静电剂和抗菌剂均匀分散,避免团聚,确保各组分在纤维表面均匀渗透。聚合物在烘干过程中形成薄膜,将抗静电剂和抗菌剂牢固附着于棉纤维上,防止组分脱落,这不仅稳定了抗静电效果,还间接支持抗菌剂的持续释放。通过优化溶液粘度,水溶性聚合物确保浸渍过程充分渗透,最大化各组分接触面积,提升整体性能。抗菌剂能有效杀灭或抑制微生物,防止伤口感染。抗静电剂减少静电吸附尘埃和微生物,间接降低污染风险;同时,抗菌剂在离子化环境中更易释放活性离子,增强抗菌效率。
与现有技术相比,本发明的有益效果是:
1.长效抗静电性能显著提升:与传统技术中抗静电效果短暂、易受环境因素影响相比,本发明通过引入特定小分子抗静电剂(如式1所示化合物),结合吸湿导电机理、离子化作用和表面能调节,实现了长效稳定的电荷中和能力。这一趋势体现为静电消散更快且效果持久,有效避免电荷积累导致的安全隐患和灰尘吸附问题,克服了现有技术中抗静电剂效果不持久的缺点。
2.抗菌稳定性大幅增强:现有医用纱布常面临抗菌性能随时间衰减的问题,本发明通过在纱布中整合抗静电剂与高效抗菌剂(如十六烷基三甲基溴化铵),形成协同作用机制,确保了抗菌效果的长期稳定性。趋势表现为抑菌率随时间推移仅轻微下降,维持高度抑菌状态,显著降低了细菌滋生和感染风险,提升了医疗环境下的卫生安全性。
3.综合性能与舒适性整体优化:相比现有技术中纱布舒适性差和加工复杂的痛点,本发明通过优化棉纤维长度、添加水溶性聚合物及编织工艺(如圆编织机控制网孔密度),实现了纱布机械强度、耐磨性和透气性的协同提升。这一趋势反映在纱布整体使用体验改善上,包括减少患者不适感、增强耐用性,以及简化制备流程,从而满足现代医疗对多功能材料的更高需求。
附图说明
图1为本发明所述的抗静电剂1的核磁图。
具体实施方式
下面将结合本发明中的附图,对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动条件下所获得的所有其它实施例,都属于本发明保护的范围。
制备例1
抗静电剂1的制备:
;
第一步:在氮气保护下,将20g的原料1和20.11g的原料2溶于250ml的甲苯溶液中,加入20.31g的叔丁醇钠、2.90g的三(二亚苄基丙酮)二钯、1.07g的三叔丁基磷,搅拌均匀,升温至120℃,并回流反应12h;反应结束后,稍降温度,使用硅藻土进行过滤,除去盐以及催化剂,滤液冷却至室温后,水洗三遍,保留有机相,接着用乙酸乙酯萃取水相;合并有机相后,旋干有机相,进行柱层析(硅胶柱层析,使用石油醚和乙酸乙酯的混合溶液作为洗脱液),旋干后,得到14.70g的中间体1。
;
第二步:在氮气保护下,将14.70g的中间体1和15.24g的原料3溶于200ml的甲苯溶液中,加入9.07g的叔丁醇钠、1.30g的三(二亚苄基丙酮)二钯、0.5g的三叔丁基磷,搅拌均匀,升温至120℃,并回流反应12h;反应结束后,稍降温度,使用硅藻土进行过滤,除去盐以及催化剂,滤液冷却至室温后,水洗三遍,保留有机相,接着用乙酸乙酯萃取水相;合并有机相后,旋干有机相,进行柱层析(硅胶柱层析,使用石油醚和乙酸乙酯的混合溶液作为洗脱液),旋干后,得到18.67g的抗静电剂1。
产物结构鉴定:
中间体1的质谱M/Z MS+1:312;
抗静电剂1的质谱M/Z MS+1:500;
抗静电剂1的1H NMR (Chloroform-d),图1:δ 5.04 (s, 1H), 4.16-3.97 (m,3H), 3.91-3.75 (m, 3H), 3.61-3.51 (m, 4H), 3.38 (s, 3H), 3.12 (d, 2H), 2.71(t, 2H), 2.34 (s, 3H), 2.07-1.94 (m, 1H), 1.87-1.73 (m, 1H), 1.71-1.51 (m,5H), 1.49-1.37 (m, 5H), 1.37-1.25 (m, 6H), 0.96-0.87 (m, 6H)。
制备例2-制备例6
制备例2-制备例6中依次合成抗静电剂2-抗静电剂5,参照制备例1的制备方法,替换其中的原料2,其余与制备例1保持相同,具体的见表1。
表1。
| 原料2结构 | 抗静电剂2-抗静电剂5结构 | 产物结构鉴定质谱M/ZMS+1 | |
| 制备例2 | 514 | ||
| 制备例3 | 528 | ||
| 制备例4 | 511 | ||
| 制备例5 | 525 | ||
| 制备例6 | 530 |
实施例1
一种抗静电医用纱布的制备:
1.原料组成:
棉纤维:70份(选用精梳棉,纤维长度30mm,采购自:浙江新棉纺织股份有限公司);抗静电剂:3份(采用制备例1所得的抗静电剂1);
溶性聚合物:10份(选用聚乙烯醇,采购自:上海阿拉丁生化科技股份有限公司);
抗菌剂:0.8份(选用十六烷基三甲基溴化铵,采购自:上海阿拉丁生化科技股份有限公司);
水:作为溶剂,用量为200份(为去离子水)。
2.制备方法:
(1)将3份抗静电剂1、10份聚乙烯醇和0.8份十六烷基三甲基溴化铵混合于200份水中。在室温(25℃)下以200rpm搅拌30分钟,直至形成均一透明的溶液A;
(2)将70份精梳棉纤维浸渍于溶液A中。浸渍过程在40℃下进行,时间维持60分钟,期间间歇性搅拌(每10分钟搅拌一次,每次5分钟),完成后,取出浸泡棉纤维,沥干多余溶液,得均匀改性的浸泡棉纤维;
(3)将浸泡棉纤维置于烘干箱中,在50℃下烘干120分钟。烘干后纤维含水率低于5%,得干燥的改性棉纤维;
(4)使用圆编织机将改性棉纤维编织成平纹结构的医用纱布,编织参数设定为:网孔密度15目/平方厘米。编织后纱布经裁剪和边缘处理,得成品抗静电医用纱布。
实施例2-实施例6
一种抗静电医用纱布的制备,参照实施例1的制备方法,将其中的抗静电剂依次替换为抗静电剂2-抗静电剂6,其余与实施例1保持相同。
对比例1
一种抗静电医用纱布的制备,参照实施例1的制备方法,将其中的抗静电剂替换为抗静电剂SN(CAS:86443-82-5,),其余与实施例1保持相同。
对比例2
一种抗静电医用纱布的制备,参照实施例1的制备方法,将其中的抗静电剂替换为抗静电剂TM(采购自:常州德恩源新材料科技有限公司),其余与实施例1保持相同。
对比例3
一种抗静电医用纱布的制备,参照实施例1的制备方法,不添加其中的抗静电剂,其余与实施例1保持相同。
对比例4
一种抗静电医用纱布的制备,参照实施例1的制备方法,不添加其中的抗菌剂,其余与实施例1保持相同。
性能测试:
(1)抗菌性、抗菌稳定性:根据《GB/T 20944.3-2008 纺织品抗菌性能的评价 第3部分:振荡瓶法》进行检测,28天、56天后再次按照上述方法进行抗菌性能测试,测试菌种为金黄色葡萄球菌,数据如表2所示。
抗静电性能评价:按照国家标准GB/T 12703.1-2008《纺织品静电性能的评定 第1部分:静电压和半衰期》对实施例制备的抗静电医用纱布进行测试,测试条件为温度20℃,相对湿度35%。将纱布静置56天后再次测量,以静电电压的半衰期(s)进行评价,半衰期短表示抗静电性能好(因为静电荷消散快),数据如表2所示。
表2。
| 0天抑菌率(%) | 28天抑菌率(%) | 56天抑菌率(%) | 半衰期(s) | 56天后半衰期(s) | |
| 实施例1 | 99.9 | 99.8 | 99.6 | 0.3 | 0.3 |
| 实施例2 | 99.9 | 99.9 | 99.7 | 0.2 | 0.2 |
| 实施例3 | 99.9 | 99.9 | 99.7 | 0.2 | 0.3 |
| 实施例4 | 99.9 | 99.9 | 99.6 | 0.4 | 0.4 |
| 实施例5 | 99.9 | 99.7 | 99.4 | 0.3 | 0.4 |
| 实施例6 | 99.9 | 99.9 | 99.7 | 0.1 | 0.2 |
| 对比例1 | 93.6 | 93.0 | 92.6 | 1.1 | 1.4 |
| 对比例2 | 94.1 | 93.8 | 93.0 | 1.5 | 2.2 |
| 对比例3 | 90.8 | 90.0 | 89.2 | 4.6 | 5.9 |
| 对比例4 | 50.3 | 45.6 | 41.8 | 1.5 | 1.6 |
所有实施例组(使用本发明的抗静电剂)在抗菌性能上表现出高度稳定的抑菌效果,抑菌率随时间推移仅轻微下降,维持在接近完美的水平,而对比组则初始抑菌率较低,并随时间持续衰减,显示出明显的性能劣化。在抗静电性能方面,半衰期作为关键指标(半衰期短表示静电荷消散快,抗静电性强),实施例组的半衰期普遍非常短暂,体现了优异的抗静电性;相比之下,对比组的半衰期显著延长,表明抗静电效果较差。这直接关联到抗静电剂的效能:实施例组中的抗静电剂通过吸湿导电机理和离子化作用,有效中和电荷,从而缩短半衰期;而对比组因抗静电剂选择不当或缺失,导致电荷积累加剧,半衰期延长,进一步影响纱布的整体安全性和实用性。整体上,本发明的抗静电剂设计在维持长效抗菌的同时,显著提升了抗静电性能的稳定性。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (10)
1.一种小分子抗静电剂,其特征在于,所述抗静电剂为式1所示的化合物:
式1:;
所述式1中的R1选自:氰基、碳原子数在1-5的烷基;
或R1选自:被氰基、羟基取代的碳原子数在1-5的烷基。
2.根据权利要求1中所述的一种小分子抗静电剂,其特征在于,所述碳原子数在1-5的烷基选自:甲基、乙基、丙基。
3.根据权利要求1中所述的一种小分子抗静电剂,其特征在于,所述抗静电剂为下述结构所示的化合物中的任意一种:
;
。
4.一种抗静电医用纱布,其特征在于,所述抗静电医用纱布中包括权利要求1-3中任意一项所述的抗静电剂。
5.根据权利要求4中所述的一种抗静电医用纱布,其特征在于,所述抗静电医用纱布包括以下质量份的原料:棉纤维60-80份、抗静电剂1-5份、水溶性聚合物5-15份、抗菌剂0.5-1份。
6.根据权利要求5中所述的一种抗静电医用纱布,其特征在于,所述棉纤维为精梳棉,纤维长度在25-35mm。
7.根据权利要求5中所述的一种抗静电医用纱布,其特征在于,所述水溶性聚合物选自聚乙烯醇或羧甲基纤维素钠。
8.根据权利要求5中所述的一种抗静电医用纱布,其特征在于,所述抗菌剂选自十六烷基三甲基溴化铵或苯扎氯铵。
9.一种权利要求4-8中任意一项所述的一种抗静电医用纱布的制备方法,其特征在于,包括以下步骤:
(1)将所述抗静电剂、水溶性聚合物和抗菌剂混合于水中,形成溶液A;
(2)将所述棉纤维浸渍于所述溶液A中,确保充分渗透,得浸泡棉纤维;
(3)将所述浸泡棉纤维在40-65℃下烘干,制备得到改性棉纤维;
(4)将所述改性棉纤维进行编织,制成医用纱布。
10.根据权利要求9中所述的一种抗静电医用纱布的制备方法,其特征在于,所述步骤(4)中的编织采用圆编织机或平织机,编织成平纹结构或网孔结构的医用纱布,其中网孔密度为10-20目/平方厘米。
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