CN111716841A - 一种防丙烯口罩及其制备方法 - Google Patents

一种防丙烯口罩及其制备方法 Download PDF

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Publication number
CN111716841A
CN111716841A CN202010523109.9A CN202010523109A CN111716841A CN 111716841 A CN111716841 A CN 111716841A CN 202010523109 A CN202010523109 A CN 202010523109A CN 111716841 A CN111716841 A CN 111716841A
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China
Prior art keywords
titanium dioxide
nano titanium
propylene
fullerene derivative
modified
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Granted
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CN202010523109.9A
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English (en)
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CN111716841B (zh
Inventor
刘宇清
胡静
王玉婷
李冉冉
杨欣
陈恺宜
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Suzhou University
Nantong Textile and Silk Industrial Technology Research Institute
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Suzhou University
Nantong Textile and Silk Industrial Technology Research Institute
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Application filed by Suzhou University, Nantong Textile and Silk Industrial Technology Research Institute filed Critical Suzhou University
Priority to CN202010523109.9A priority Critical patent/CN111716841B/zh
Publication of CN111716841A publication Critical patent/CN111716841A/zh
Priority to PCT/CN2021/098770 priority patent/WO2021249365A1/zh
Priority to US18/008,692 priority patent/US20230211190A1/en
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    • A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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Abstract

本发明公开了一种防丙烯口罩及其制备方法，防丙烯口罩包括依次设置的纤维布接触层、抗静电无纺布层和富勒烯/纳米二氧化钛纺粘层的缝合而成；其中，富勒烯/纳米二氧化钛纺粘层为采用纺粘法将改性树脂材料纺成纤网而后制成，改性树脂材料的原料包括基体树脂、羧基化富勒烯衍生物、纳米二氧化钛、润滑剂和偶联剂，改性树脂材料通过如下方法制备：将羧基化富勒烯衍生物与所述纳米二氧化钛混合反应制成羧基化富勒烯衍生物修饰的纳米二氧化钛，然后将其与原料中的剩余组分共混挤出，制成；本发明口罩不仅使用且携带方便，而且能够阻止丙烯从人体呼吸器官进入人体，防丙烯效果好，同时还具有防静电功能，尤其适于丙烯生产车间的使用。

Description

一种防丙烯口罩及其制备方法
技术领域
本发明属于卫生安全防护领域，具体涉及一种防丙烯口罩及其制备方法。
背景技术
随着我国工业化和城市化的快速发展以及能源消费的持续增长，我们社会当前面临的问题之一是：挥发性有机化合物对人体健康和环境构成风险，这种类型的气体挥发物通过呼吸器官进入人体会损害神经系统，并具有强烈的致癌性。
丙烯是挥发性有机化合物的合理代表，但目前通过预防呼吸器官吸入丙烯的防护措施却很少。因此，科学界正在做出巨大的努力以去除和预防这种类型的有毒气体。传统的去除方法是通过催化燃烧来实现的，但是这种方法需要高温和高压才能完全氧化，且不适用于人体安全防护，例如中国专利CN101006261B。此外还有中国专利CN107198888A利用化学和物理吸附原理，控制挥发性有毒气体的扩散，但是由于此方法中的设备较大，使用起来不方便。因此，在条件简单且使用便利的情况下预防丙烯通过呼吸器官进入人体的方法和举措具有极佳的现实意义。
发明内容
本发明所要解决的技术问题是克服现有技术中的不足，提供一种新的具有防丙烯功能的口罩，其不仅使用且携带方便，而且能够阻止丙烯从人体呼吸器官进入人体，防丙烯效果好，同时还具有防静电功能，尤其适于丙烯生产车间的使用。
本发明同时还提供了一种上述防丙烯口罩的制备方法。
为解决以上技术问题，本发明采取的一种技术方案如下：一种防丙烯口罩，所述防丙烯口罩包括依次设置的纤维布接触层、抗静电无纺布层和富勒烯/纳米二氧化钛纺粘层；其中，所述富勒烯/纳米二氧化钛纺粘层为采用纺粘法将改性树脂材料纺成纤网而后制成，所述改性树脂材料的原料包括基体树脂、羧基化富勒烯衍生物、纳米二氧化钛、润滑剂和偶联剂，所述改性树脂材料通过如下方法制备：将所述羧基化富勒烯衍生物与所述纳米二氧化钛混合反应制成羧基化富勒烯衍生物修饰的纳米二氧化钛，然后将所述羧基化富勒烯衍生物修饰的纳米二氧化钛与所述原料中的剩余组分共混挤出，制成。
根据本发明的一些优选方面，所述基体树脂、所述羧基化富勒烯衍生物、所述纳米二氧化钛、所述润滑剂和所述偶联剂的投料质量比为1∶0.02-0.14∶0.16-0.45∶0.0005-0.002∶0.0001-0.001。
进一步优选地，所述基体树脂、所述羧基化富勒烯衍生物、所述纳米二氧化钛、所述润滑剂和所述偶联剂的投料质量比为1∶0.05-0.13∶0.16-0.40∶0.0005-0.0018∶0.0001-0.0008。
根据本发明的一些优选方面，所述羧基化富勒烯衍生物与所述纳米二氧化钛的投料质量比为1∶1.5-5.0。进一步优选地，所述羧基化富勒烯衍生物与所述纳米二氧化钛的投料质量比为1∶2-4。
根据本发明的一些具体方面，所述基体树脂为选自聚对苯二甲酸乙二酯（PET）、聚对苯二甲酸丁二酯（PBT）和聚芳酯（PAR）中的一种或多种的组合。优选地，所述基体树脂为聚对苯二甲酸乙二酯。
根据本发明，所述羧基化富勒烯衍生物可以商购获得或者根据本领域常规方法制备而得。
根据本发明的一个具体方面，所述羧基化富勒烯衍生物购自南京先丰纳米材料科技有限公司，编号XFC08。
根据本发明的一些优选方面，所述纳米二氧化钛的平均粒径为150-200nm。
根据本发明的一些优选方面，所述抗静电无纺布层为采用喷涂、浸渍或涂刷方式将抗静电剂粘附在聚丙烯熔喷布上而形成，所述抗静电剂为阳离子型抗静电剂或非离子型抗静电剂或两者的组合。
根据本发明的一些具体且优选的方面，所述抗静电剂包括季铵盐抗静电剂（例如烷基叔胺硝酸盐抗静电剂等）、非离子型抗静电剂（例如乙氧基化硬脂酞胺等）。
根据本发明的一些具体且优选的方面，所述羧基化富勒烯衍生物修饰的纳米二氧化钛通过如下方法制备：将羧基化富勒烯衍生物、纳米二氧化钛加入无水乙醇中，超声分散得混合液，将所述混合液在95-105℃下保温反应，冷却，离心分离，洗涤，干燥，制成。
在本发明的一些实施方式中，所述羧基化富勒烯衍生物修饰的纳米二氧化钛通过如下方法制备：
（a）按配方量称取羧基化富勒烯衍生物和纳米二氧化钛；随后将称取好的羧基化富勒烯衍生物和纳米二氧化钛放入无水乙醇中（质量分数为2-5％），在超声条件下形成混合液；然后将所得混合液放入反应釜中95-105℃保温10-20小时；冷却，得反应混合液；
（b）羧基化富勒烯衍生物修饰的纳米二氧化钛的制备：将步骤（1）制备得到的混合溶液离心过滤；再分别用去离子水和无水乙醇洗涤；然后在30-50℃烘箱中干燥，得到羧基化富勒烯衍生物修饰的纳米二氧化钛，其为粉末状。
根据本发明的一些优选方面，所述混合共挤的温度为190-260℃。
根据本发明的一些具体方面，所述纤维布接触层的材质为棉。
根据本发明的一些具体方面，所述润滑剂可以为润滑剂HI-LUBE等，所述偶联剂可以为偶联剂KH550等。
本发明提供的又一技术方案：一种上述所述的防丙烯口罩的制备方法，所述制备方法包括如下步骤：
（1）将所述羧基化富勒烯衍生物与所述纳米二氧化钛混合反应制备羧基化富勒烯衍生物修饰的纳米二氧化钛；
（2）将步骤（1）制备的所述羧基化富勒烯衍生物修饰的纳米二氧化钛与干燥的基体树脂以及所述原料中的剩余组分混合共挤，制成所述改性树脂材料；
（3）将步骤（2）制成的所述改性树脂材料采用纺粘法纺成纤网，将所述纤网制成所述富勒烯/纳米二氧化钛纺粘层；
（4）抗静电无纺布层的制备：将抗静电剂与水混合制成抗静电剂溶液，然后采用喷涂、浸渍或涂刷方式将抗静电剂溶液粘附在聚丙烯熔喷布上，干燥，制成；
（5）将纤维布接触层、步骤（4）制备的抗静电无纺布层和步骤（3）制备的富勒烯/纳米二氧化钛纺粘层依次叠加制成所述防丙烯口罩。
根据本发明的一些具体方面，将纤维布接触层、步骤（4）制备的抗静电无纺布层和步骤（3）制备的富勒烯/纳米二氧化钛纺粘层依次叠加之后可以通过缝合、热熔等方式制成所述防丙烯口罩。
根据本发明的一些优选方面，步骤（2），所述混合共挤的温度为190-260℃。
根据本发明的一些具体方面，步骤（2），所述混合挤出的螺杆转速为80-150rpm/min。
由于以上技术方案的采用，本发明与现有技术相比具有如下优点：
本发明针对现有技术中丙烯污染物的消除过程中存在的条件苛刻且使用不方便的问题，创新地提供了一种新型的口罩，其能够具有预防和/或阻止丙烯通过呼吸器官进入人体的功能，一方面，相较于现有大型消除丙烯的机器设备，本发明简单轻便，可随身携带，使用者的日常活动不会受限；另一方面，由于丙烯生产车间要做抗静电处理，本发明的口罩同时具有抗静电效果，在有效防护丙烯中毒的同时还能防范静电引发的事故，具有极佳的现实意义。
其中，在本发明的口罩中，本发明发明人创新地采用了一种特定的改性树脂材料，其原料包括树脂基体以及羧基化富勒烯衍生物、纳米二氧化钛等，由此种特定树脂纺粘制成的纺粘层作为口罩的最外层，其能够利用二氧化钛的光催化氧化性能实现对空气中丙烯（尤其适用于低浓度的丙烯）的完全氧化。特别地，富勒烯的加入扩大了二氧化钛的可见光吸收光谱，使二氧化钛能在太阳/可见光辐射或LED灯照射条件下激发其光催化氧化性能，光催化条件更加简单方便。同时，富勒烯本身的光催化性能与二氧化钛发生协同作用，使得二氧化钛对丙烯的消除效率更高。而且值得注意的是，富勒烯的加入并不会影响口罩的透气性。
此外，本发明的口罩对丙烯的消除效果稳定，几乎不会发生口罩在搬运、压放等摩擦过程中有效作用成分脱离的现象。
附图说明
图1为本发明实施例7防丙烯口罩的结构示意图；
其中，1、纤维布接触层；2、抗静电无纺布层；3、富勒烯/纳米二氧化钛纺粘层。
具体实施方式
以下结合具体实施例对上述方案做进一步说明；应理解，这些实施例是用于说明本发明的基本原理、主要特征和优点，而本发明不受以下实施例的范围限制；实施例中采用的实施条件可以根据具体要求做进一步调整，未注明的实施条件通常为常规实验中的条件。
下述中，如无特殊说明，所有的原料基本来自于商购或者通过本领域的常规方法制备而得。下述实施例中，羧基化富勒烯衍生物购自南京先丰纳米材料科技有限公司，编号XFC08；纳米二氧化钛的平均粒径约为170nm；聚对苯二甲酸乙二酯；购自美国杜邦，牌号FR543；润滑剂为润滑剂HI-LUBE，购自日本HARVES公司；偶联剂为偶联剂KH550，购自南京经天纬化工有限公司。
实施例1 富勒烯/纳米二氧化钛纺粘层的制备
本例提供一种富勒烯/纳米二氧化钛纺粘层，其为采用纺粘法将改性树脂材料纺成纤网而后制成，以质量份数计，所述改性树脂材料的原料包括羧基化富勒烯衍生物5份、纳米二氧化钛15份、聚对苯二甲酸乙二酯（PET）79.925份、润滑剂0.0525份、偶联剂0.0225份。
其制备方法为：
（1）按配方量称取羧基化富勒烯衍生物和纳米二氧化钛；随后将称取好的羧基化富勒烯衍生物和纳米二氧化钛放入无水乙醇中（质量分数为3%），在超声条件下形成混合液；然后将所得混合液放入反应釜中100℃保温12小时；冷却，得反应混合液；
（2）将步骤（1）制备得到的反应混合液离心过滤；再分别用去离子水和无水乙醇洗涤2次；然后在40℃烘箱中干燥过夜后，得到羧基化富勒烯衍生物修饰的纳米二氧化钛，其为粉末状；
（3）按配方量称取好PET，放入80℃烘箱干燥12小时；
（4）将步骤（2）制备得到的羧基化富勒烯衍生物修饰的纳米二氧化钛与步骤（3）得到的干燥PET、以及润滑剂和偶联剂放入螺杆挤出机共混，螺杆速度90转/分种，温度设定在200℃，得到改性树脂材料；
（5）利用纺粘法将步骤（4）制备所得改性树脂材料纺成纤网，再制成纺粘布，即为所述的富勒烯/纳米二氧化钛纺粘层。
本例所得富勒烯/纳米二氧化钛纺粘层通过紫外可见光光度计测得在光波长为0-600nm区域内具有一定的吸收性，其中400-600nm为可见光区域。
实施例2 富勒烯/纳米二氧化钛纺粘层的制备
本例提供一种富勒烯/纳米二氧化钛纺粘层，其为采用纺粘法将改性树脂材料纺成纤网而后制成，以质量份数计，所述改性树脂材料的原料包括羧基化富勒烯衍生物7份、纳米二氧化钛20份、聚对苯二甲酸乙二酯（PET）72.9份、润滑剂0.07份、偶联剂0.03份。
其制备方法为：
（1）按配方量称取所述羧基化富勒烯衍生物和纳米二氧化钛；随后将称取好的羧基化富勒烯衍生物和纳米二氧化钛放入无水乙醇中（质量分数为3%），在超声条件下形成混合液；然后将所得混合液放入反应釜中100℃保温12小时；冷却，得反应混合液；
（2）将步骤（1）制备得到的反应混合液离心过滤；再分别用去离子水和无水乙醇洗涤2次；然后在40℃烘箱中干燥过夜，得到羧基化富勒烯衍生物修饰的纳米二氧化钛，其为粉末状；
（3）按配方量称取好PET,放入80℃烘箱干燥12小时；
（4）将步骤（2）制备得到的羧基化富勒烯衍生物修饰的纳米二氧化钛与步骤（3）得到的干燥PET、以及润滑剂和偶联剂放入螺杆挤出机共混，螺杆速度80转/分，温度设定在210℃，得到改性树脂材料；
（5）利用纺粘法将步骤（4）制备所得改性树脂材料纺成纤网，再制成纺粘布，即为所述的富勒烯/纳米二氧化钛纺粘层。
本例所得富勒烯/纳米二氧化钛纺粘层通过紫外可见光光度计测得在光波长为0-800nm区域内具有一定的吸收性，其中400-800nm为可见光区域。
实施例3 富勒烯/纳米二氧化钛纺粘层的制备
本例提供一种富勒烯/纳米二氧化钛纺粘层，其为采用纺粘法将改性树脂材料纺成纤网而后制成，以质量份数计，所述改性树脂材料的原料包括羧基化富勒烯衍生物8份、纳米二氧化钛24份、聚对苯二甲酸乙二酯（PET）67.88份、润滑剂0.084份、偶联剂0.036份。
其制备方法为：
（1）按配方量称取所述羧基化富勒烯衍生物和纳米二氧化钛；随后将称取好的羧基化富勒烯衍生物和纳米二氧化钛放入无水乙醇中（质量分数为3%），在超声条件下形成混合液；然后将所得混合液放入反应釜中100℃保温12小时；冷却，得反应混合液；
（2）将步骤（1）制备得到的反应混合液离心过滤；再分别用去离子水和无水乙醇洗涤2次；然后在40℃烘箱中干燥过夜，得到羧基化富勒烯衍生物修饰的纳米二氧化钛，其为粉末状；
（3）按配方量称取好PET,放入80℃烘箱干燥12小时；
（4）将步骤（2）制备得到的羧基化富勒烯衍生物修饰的纳米二氧化钛与步骤（3）得到的干燥PET、以及润滑剂和偶联剂放入螺杆挤出机共混，螺杆速度100转/分，温度设定在190℃，得到改性树脂材料；
（5）利用纺粘法将步骤（4）制备所得改性树脂材料纺成纤网，再制成纺粘布，即为所述的富勒烯/纳米二氧化钛纺粘层。
本例所得富勒烯/纳米二氧化钛纺粘层通过紫外可见光光度计测得在光波长为0-900nm区域内具有一定的吸收性，其中400-900nm为可见光区域。
实施例4 抗静电无纺布层的制备
本例提供一种抗静电无纺布层，其制备方法为：
（1）将烷基叔胺硝酸盐抗静电剂（(即抗静电剂SN，购自武汉华翔科洁生物技术有限公司））与水稀释后形成0.5％浓度的抗静电溶液；
（2）将聚丙烯熔喷布浸渍到步骤（1）制备的抗静电溶液中，静置4个小时；
（3）将步骤（2）制备的粘附有抗静电剂的无纺布放入烘箱加热烘干，烘箱温度设定为100℃，即得到抗静电无纺布层。
实施例5 抗静电无纺布层的制备
本例提供一种抗静电无纺布层，其制备方法为：
（1）将乙氧基化硬脂酞胺（购自南京睿创化工科技有限公司，型号AC-1820）与水稀释后形成0.8％浓度的抗静电溶液；
（2）将步骤（1）制备的抗静电溶液均匀涂刷在聚丙烯熔喷布表面；
（3）将步骤（2）制备的粘附有抗静电剂的无纺布放入烘箱加热烘干，烘箱温度设定为110℃，最后即可制备得抗静电无纺布层。
实施例6 抗静电无纺布层的制备
本例提供一种抗静电无纺布层，其制备方法为：
（1）将烷基叔胺硝酸盐抗静电剂、乙氧基化硬脂酞胺与水稀释后形成1％浓度的抗静电溶液，其中烷基叔胺硝酸盐抗静电剂、乙氧基化硬脂酞胺的质量比为1:1；
（2）采用喷涂法，将步骤（1）制备的抗静电溶液粘附在聚丙烯熔喷布表面；
（3）将步骤（2）制备的粘附有抗静电剂的无纺布放入烘箱加热烘干，烘箱温度设定为120℃，最后即可制备得抗静电无纺布层。
实施例7 防丙烯口罩的制备
本例提供一种防丙烯口罩，由外到内包括：富勒烯/纳米二氧化钛纺粘层、抗静电无纺布层和纤维布接触层（棉布层）。
其制备方法为：
将实施例1制备的富勒烯/纳米二氧化钛纺粘层、实施例4制备的抗静电剂无纺布层以及纤维布接触层按由外到内的顺序依次叠加缝合，即可得到防丙烯口罩。
实施例8 防丙烯口罩的制备
本例提供一种防丙烯口罩，由外到内包括：富勒烯/纳米二氧化钛纺粘层、抗静电无纺布层和纤维布接触层（棉布层）。
其制备方法为：
将实施例2制备的富勒烯/纳米二氧化钛纺粘层、实施例5制备的抗静电剂无纺布层以及纤维布接触层按由外到内的顺序依次叠加缝合，即可得到防丙烯口罩。
实施例9 防丙烯口罩的制备
本例提供一种防丙烯口罩，由外到内包括：富勒烯/纳米二氧化钛纺粘层、抗静电无纺布层和纤维布接触层（棉布层）。
其制备方法为：
将实施例3制备的富勒烯/纳米二氧化钛纺粘层、实施例6制备的抗静电剂无纺布层以及纤维布接触层按由外到内的顺序依次叠加缝合，即可得到防丙烯口罩。
实施例10 丙烯转化率测量
将实施7制备的防丙烯口罩按照如下方法进行检测，具体检测方法为：
（1）取制备好的防丙烯口罩固定在有进出口的透明玻璃容器中，容器体积为1L，透明容器被口罩阻隔为两个空间；
（2）在太阳可见光辐射条件下，一侧接入口通入含丙烯的料流，丙烯浓度稀释为110ppmv，流速设置为5ml/min；另一侧出口接到配备有在30°C下操作的CTR-1色谱柱的GC色谱仪中；
（3）5min后，利用GC色谱追踪出口气体中丙烯和CO2浓度的变化，并按以下公式计算丙烯转化率：丙烯转化率（％）=
Figure DEST_PATH_IMAGE001
×100%，结果测得丙烯转化率约为98.6％。
实施例11 丙烯转化率测量
将实施8制备的防丙烯口罩按照如下方法进行检测，具体检测方法为：
（1）取制备好的防丙烯口罩固定在有进出口的透明玻璃容器中，容器体积为1L，透明容器被口罩阻隔为两个空间；
（2）在在输出功率为1w/cm2的LED灯照射下，一侧接入口通入含丙烯的料流，丙烯浓度稀释为100ppmv，流速设置为6ml/min；另一侧出口接到配备有在30°C下操作的CTR-1色谱柱的GC色谱仪中；
（3）5min后，利用GC色谱追踪出口气体中丙烯和CO2浓度的变化，并按以下公式计算丙烯转化率：丙烯转化率（％）=
Figure 879415DEST_PATH_IMAGE001
×100%，结果测得丙烯转化率约为99.1％。
实施例12 丙烯转化率测量
将实施9制备的防丙烯口罩按照如下方法进行检测，具体检测方法为：
（1）取制备好的防丙烯口罩固定在有进出口的透明玻璃容器中，容器体积为1L，透明容器被口罩阻隔为两个空间；
（2）在太阳可见光辐射条件下，一侧接入口通入含丙烯的料流，丙烯浓度稀释为90ppmv，流速设置为7ml/min；另一侧出口接到配备有在30°C下操作的CTR-1色谱柱的GC色谱仪中；
（3）5min后，利用GC色谱追踪出口气体中丙烯和CO2浓度的变化，并按以下公式计算丙烯转化率：丙烯转化率（％）=
Figure 618832DEST_PATH_IMAGE001
×100%，结果测得丙烯转化率接近100％。
由上述实施例可知，本发明的防丙烯口罩能够在太阳/可见光辐射或LED灯照射条件下，高效率氧化丙烯，大大减少使用者丙烯中毒的可能性。同时光催化氧化条件简单方便，口罩透气性不会受富勒烯影响，氧化过程无有毒成分产生，属于绿色环保型功能产品。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (10)

1.一种防丙烯口罩，其特征在于，所述防丙烯口罩包括依次设置的纤维布接触层、抗静电无纺布层和富勒烯/纳米二氧化钛纺粘层；其中，所述富勒烯/纳米二氧化钛纺粘层为采用纺粘法将改性树脂材料纺成纤网而后制成，所述改性树脂材料的原料包括基体树脂、羧基化富勒烯衍生物、纳米二氧化钛、润滑剂和偶联剂，所述改性树脂材料通过如下方法制备：将所述羧基化富勒烯衍生物与所述纳米二氧化钛混合反应制成羧基化富勒烯衍生物修饰的纳米二氧化钛，然后将所述羧基化富勒烯衍生物修饰的纳米二氧化钛与所述原料中的剩余组分共混挤出，制成。
2.根据权利要求1所述的防丙烯口罩，其特征在于，所述基体树脂、所述羧基化富勒烯衍生物、所述纳米二氧化钛、所述润滑剂和所述偶联剂的投料质量比为1∶0.02-0.14∶0.16-0.45∶0.0005-0.002∶0.0001-0.001。
3.根据权利要求2所述的防丙烯口罩，其特征在于，所述基体树脂、所述羧基化富勒烯衍生物、所述纳米二氧化钛、所述润滑剂和所述偶联剂的投料质量比为1∶0.05-0.13∶0.16-0.40∶0.0005-0.0018∶0.0001-0.0008。
4.根据权利要求1-3中任一项所述的防丙烯口罩，其特征在于，所述羧基化富勒烯衍生物与所述纳米二氧化钛的投料质量比为1∶1.5-5.0。
5.根据权利要求1所述的防丙烯口罩，其特征在于，所述基体树脂为选自聚对苯二甲酸乙二酯、聚对苯二甲酸丁二酯和聚芳酯中的一种或多种的组合。
6.根据权利要求1所述的防丙烯口罩，其特征在于，所述纳米二氧化钛的平均粒径为150-200nm。
7.根据权利要求1所述的防丙烯口罩，其特征在于，所述抗静电无纺布层为采用喷涂、浸渍或涂刷方式将抗静电剂粘附在聚丙烯熔喷布上而形成，所述抗静电剂为阳离子型抗静电剂或非离子型抗静电剂或两者的组合。
8.根据权利要求1所述的防丙烯口罩，其特征在于，所述羧基化富勒烯衍生物修饰的纳米二氧化钛通过如下方法制备：将羧基化富勒烯衍生物、纳米二氧化钛加入无水乙醇中，超声分散得混合液，将所述混合液在95-105℃下保温反应，冷却，离心分离，洗涤，干燥，制成。
9.根据权利要求1所述的防丙烯口罩，其特征在于，所述混合共挤的温度为190-260℃。
10.一种权利要求1-9中任一项所述的防丙烯口罩的制备方法，其特征在于，所述制备方法包括如下步骤：
（1）将所述羧基化富勒烯衍生物与所述纳米二氧化钛混合反应制备羧基化富勒烯衍生物修饰的纳米二氧化钛；
（2）将步骤（1）制备的所述羧基化富勒烯衍生物修饰的纳米二氧化钛与干燥的基体树脂以及所述原料中的剩余组分混合共挤，制成所述改性树脂材料；
（3）将步骤（2）制成的所述改性树脂材料采用纺粘法纺成纤网，将所述纤网制成所述富勒烯/纳米二氧化钛纺粘层；
（4）抗静电无纺布层的制备：将抗静电剂与水混合制成抗静电剂溶液，然后采用喷涂、浸渍或涂刷方式将抗静电剂溶液粘附在聚丙烯熔喷布上，干燥，制成；
（5）将纤维布接触层、步骤（4）制备的抗静电无纺布层和步骤（3）制备的富勒烯/纳米二氧化钛纺粘层依次叠加制成所述防丙烯口罩。
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