CN114214840A - 一种除醛配方及除醛无纺布 - Google Patents
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Abstract
一种除醛配方及除醛无纺布,其中除醛配方为混合物,混合物包括溶质、溶剂和除醛功能性物质,溶质为聚乳酸、聚己内酯、聚偏二氟乙烯、聚丙烯腈、聚醚砜、聚乙烯醇、聚环氧乙烷中的一种或多种;溶剂为N,N‑二甲基甲酰胺或水;除醛功能性物质为活性二氧化锰或活性高锰酸钾。本发明采用静电纺丝工艺,将除甲醛物质,均匀的纺在无纺布纤维的表面,不需要额外添加任何的化学物质,实现除醛无纺布上除甲醛物质的均匀分布;而且,除甲醛物质为单一靶向对甲醛进行分解处理,对其它(例如甲苯等气体)气体几乎没有处理效果,与活性炭系列除甲醛产品相比,更专一;另外,除醛无纺布具有低阻力、高效除甲醛率的优点,使得其在空气净化领域具有良好的应用前景。
Description
技术领域
本发明涉及无纺布领域,具体涉及一种除醛配方及除醛无纺布。
背景技术
随着社会发展人们生活水平的提高,空气污染问题受到人们的关注,健康成为人们关系的话题。设计具有除甲醛功能的布料,已成为了目前研究的热门。
目前,除甲醛的布料有以下几种形式:
(1)采用活性炭材料进行吸附除甲醛,例如,夹炭布;或者采用熔喷布将活性炭一层层夹住,再用骨架组装起来;或者采用熔喷布(pp)+骨架(pet,支撑熔喷)+蜂窝(活性炭做成蜂窝)。此结构下的活性炭材料的吸附很容易饱和,再次将吸收的有害气体脱附,容易进行二次污染;同时吸附的气体种类多,不能只针对对甲醛气体,导致活性炭对单一的甲醛吸附效果有所折扣,而且成本更高。
(2)采用化学材料进行催化分解除甲醛,例如,选用一种化学载体,喷涂或者浸渍在骨架上,再把处理过的骨架与熔喷复合,由于骨架的化学载体量少,孔径小催化分解效率差;或者将除甲醛化学物质与水(胶水)混合后,在布料上进行喷涂,最后烘干。此结构下采用化学材料催化分解,需要依附一些多孔性材料,而依附多孔性材料就需要用一些粘合剂,而粘合剂本身会挥发一些VOC气体,造成二次污染。
发明内容
基于此,本发明提供了一种除醛配方及除醛无纺布,以解决现有技术的除甲醛方法存在成本高、污染环境等技术问题。
为实现上述目的,本发明提供了一种除醛配方及除醛无纺布,为混合物,其特征在于,所述混合物包括溶质、溶剂和除醛功能性物质,其中:
所述溶质为聚乳酸、聚己内酯、聚偏二氟乙烯、聚丙烯腈、聚醚砜、聚乙烯醇、聚环氧乙烷中的一种或多种;
所述溶剂为N,N-二甲基甲酰胺或水;
所述除醛功能性物质为活性二氧化锰或活性高锰酸钾。
作为本发明的进一步优选技术方案,所述溶质为聚乳酸、聚己内酯、聚偏二氟乙烯、聚丙烯腈、聚醚砜中的一种或多种,所述溶剂为N,N-二甲基甲酰胺,所述除醛功能性物质为活性二氧化锰。
作为本发明的进一步优选技术方案,所述溶质为聚乙烯醇、聚环氧乙烷中的一种或两者的混合,所述溶剂为水,所述除醛功能性物质为活性二氧化锰或活性高锰酸钾。
作为本发明的进一步优选技术方案,按质量份数,所述溶质为10-25份,所述溶剂为2-10份,所述除醛功能性物质为73-90份。
作为本发明的进一步优选技术方案,按质量份数,所述溶质为2-10份,所述溶剂为5-30份,所述除醛功能性物质为60-90份。
根据本发明的另一方面,本发明还提供了一种除醛无纺布,包括无纺布纤维,所述无纺布纤维的表面设有除甲醛物质,所述除甲醛物质采用了上述任一项所述的除醛配方。
根据本发明的又一方面,本发明还提供了一种除醛无纺布的制备方法,其特征在于,包括以下步骤:
将除甲醛物质通过静电纺丝的工艺均匀的纺在每一根无纺布纤维的表面并形成纳米直径大小的除醛纺丝纤维,除醛纺丝纤维与无纺布纤维相互交织形成纤维网,得到除醛无纺布。
作为本发明的进一步优选技术方案,所述除醛纺丝纤维的直径尺寸为30-200nm,所述无纺布纤维的直径尺寸为10-40微米。
本发明的除醛配方及除醛无纺布,通过采用上述技术方案,可以达到如下有益效果:
1)采用静电纺丝工艺,将除甲醛物质,均匀的纺在无纺布纤维的表面,不需要额外添加任何的化学物质,实现除醛无纺布上除甲醛物质的均匀分布;
2)除甲醛物质为单一靶向对甲醛进行分解处理,对其它(例如甲苯等气体)气体几乎没有处理效果,与活性炭系列除甲醛产品相比,更专一;
3)除甲醛物质只针对甲醛进行处理,不会残留其它(例如甲苯,硫化物等气体)气体,这样就不会产生长时间使用后,产生的二次污染的弊端;
4)除醛无纺布具有低阻力、高效除甲醛率的优点,使得其在空气净化领域具有良好的应用前景。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1为除醛无纺布在显微镜下的微观结构图。
本发明目的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
具体实施方式
下面将结合附图以及具体实施方式,对本发明做进一步描述。较佳实施例中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等用语,仅为便于叙述的明了,而非用以限定本发明可实施的范围,其相对关系的改变或调整,在无实质变更技术内容下,当亦视为本发明可实施的范畴。
本发明提供了一种除醛配方,为混合物,所述混合物包括溶质、溶剂和除醛功能性物质,其中:
所述溶质为PLA(聚乳酸)、PCL(聚己内酯)、PVDf(聚偏二氟乙烯)、PAN(聚丙烯腈)、PES(聚醚砜)、PVA(聚乙烯醇)、PEO(聚环氧乙烷)中的一种或多种;
所述溶剂为DMF(N,N-二甲基甲酰胺)或水;
所述除醛功能性物质为活性二氧化锰或活性高锰酸钾。
作为一优选技术方案,所述溶质为PLA(聚乳酸)、PCL(聚己内酯)、PVDf(聚偏二氟乙烯)、PAN(聚丙烯腈)、PES(聚醚砜)中的一种或多种,所述溶剂为DMF(N,N-二甲基甲酰胺),所述除醛功能性物质为活性二氧化锰。按质量份数,所述溶质为10-25份,所述溶剂为2-10份,所述除醛功能性物质为73-90份。
作为又一优选技术方案,所述溶质为PVA(聚乙烯醇)、PEO(聚环氧乙烷)中的一种或两者的混合,所述溶剂为水,所述除醛功能性物质为活性二氧化锰或活性高锰酸钾。按质量份数,所述溶质为2-10份,所述溶剂为5-30份,所述除醛功能性物质为60-90份。
上述两优选技术方案相比:除醛配方的原料在加工成纳米丝的过程,第一种优选技术方案的原料会有残留,导致存在一定的污染,而第二种优选技术方案则不会有残留;除醛功能性物质在溶剂中的溶解度问题,第一种优选技术方案的溶解度相对较低,会导致除污的有效物质含量不高。综上所述,第二种优选技术方案更优。
本发明还提供了一种除醛无纺布,包括无纺布纤维,所述无纺布纤维的表面设有除甲醛物质,所述除甲醛物质采用了上述方案的除醛配方。
通过静电纺丝工艺,将混合的溶液纺丝形成纳米大小的颗粒/丝,使得除醛材料的颗粒/丝比表面积增大,增强活性二氧化锰或活性高锰酸钾对甲醛的处理效果,相对单纯的浸渍/涂布或夹碳布工艺,作用效果更长久,更明显。
本发明又提供了一种除醛无纺布的制备方法是:将除甲醛物质通过静电纺丝的工艺均匀的纺在每一根无纺布纤维的表面并形成纳米直径大小的除醛纺丝纤维,除醛纺丝纤维与无纺布纤维相互交织形成纤维网,得到除醛无纺布。
具体实施中,所述除醛纺丝纤维的直径尺寸为30-200nm.,所述无纺布纤维的直径尺寸为10-40微米。
参阅图1所示,采用本发明技术方案生产出的产品在实验显微镜观察,每根无纺布纤维上都附着除醛纺丝纤维,除醛纺丝纤维由除甲醛物质通过静电纺丝工艺生产形成,为纳米级别的直径尺寸,具备阻力低、比表面积大等优点,使得除甲醛能力更高效、更快。除醛无纺布具有低阻力、高效除甲醛率,该除醛无纺布可作为空气净化用的滤材,使得在空气净化领域具有良好的应用前景。
将本发明的除醛无纺布与市面上的除醛布料进行对比测试,在3立方米环境下测试,0.26平米过滤材料(除醛无纺布),30min后的甲醛去除率在70%左右,而市面其它家的材料造同样的测试环境下,30min后的甲醛去除率不足15%。
此外,由除醛配方中原料的化学特性可知,本发明的除甲醛物质为单一靶向对甲醛进行分解处理,对其它(例如甲苯等气体)气体几乎没有处理效果,与活性炭系列除甲醛产品相比,更专一。
虽然以上描述了本发明的具体实施方式,但是本领域熟练技术人员应当理解,这些仅是举例说明,可以对本实施方式做出多种变更或修改,而不背离本发明的原理和实质,本发明的保护范围仅由所附权利要求书限定。
Claims (8)
1.一种除醛配方,为混合物,其特征在于,所述混合物包括溶质、溶剂和除醛功能性物质,其中:
所述溶质为聚乳酸、聚己内酯、聚偏二氟乙烯、聚丙烯腈、聚醚砜、聚乙烯醇、聚环氧乙烷中的一种或多种;
所述溶剂为N,N-二甲基甲酰胺或水;
所述除醛功能性物质为活性二氧化锰或活性高锰酸钾。
2.根据权利要求1所述的除醛配方,其特征在于,所述溶质为聚乳酸、聚己内酯、聚偏二氟乙烯、聚丙烯腈、聚醚砜中的一种或多种,所述溶剂为N,N-二甲基甲酰胺,所述除醛功能性物质为活性二氧化锰。
3.根据权利要求1所述的除醛配方,其特征在于,所述溶质为聚乙烯醇、聚环氧乙烷中的一种或两者的混合,所述溶剂为水,所述除醛功能性物质为活性二氧化锰或活性高锰酸钾。
4.根据权利要求2所述的除醛配方,其特征在于,按质量份数,所述溶质为10-25份,所述溶剂为2-10份,所述除醛功能性物质为73-90份。
5.根据权利要求3所述的除醛配方,其特征在于,按质量份数,所述溶质为2-10份,所述溶剂为5-30份,所述除醛功能性物质为60-90份。
6.一种除醛无纺布,其特征在于,包括无纺布纤维,所述无纺布纤维的表面设有除甲醛物质,所述除甲醛物质采用了权利要求1-5任一项所述的除醛配方。
7.一种权利要求6所述的除醛无纺布的制备方法,其特征在于,包括以下步骤:
将除甲醛物质通过静电纺丝的工艺均匀的纺在每一根无纺布纤维的表面并形成纳米直径大小的除醛纺丝纤维,除醛纺丝纤维与无纺布纤维相互交织形成纤维网,得到除醛无纺布。
8.根据权利要求7所述的除醛无纺布的制备方法,其特征在于,所述除醛纺丝纤维的直径尺寸为30-200nm,所述无纺布纤维的直径尺寸为10-40微米。
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