CN112869258A - 一种吸附灭活病毒口罩产品 - Google Patents
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Abstract
本发明涉及一种吸附灭活病毒口罩产品，在口罩外层和熔喷布滤材之间增加吸附灭活病毒无纺布，该类型口罩从外至内依次包括疏水纺粘层、吸附灭活病毒无纺布、熔喷布滤材和吸水纺粘层。该类型吸附灭活病毒口罩产品不仅能够高效过滤粉尘，而且能够吸附灭活新型冠状病毒(SARS‑CoV‑2)。
Description
技术领域
本发明涉及一种吸附灭活病毒口罩产品，属于防护用品技术领域。
背景技术
新型冠状病毒(SARS-CoV-2)的传播严重威胁着全世界人民的 身体健康和生命安全。依据药物和疫苗研制的周期规律，短时间内相 关产品难以快速进入临床实用阶段。为了防止病毒的传播和感染，迫 切需要口罩类防护用品用于个人的防护。
目前，市场上效果较好的口罩如KN95、KN99型等，其核心滤 材是聚丙烯熔喷布。通过聚丙烯熔喷布的阻隔作用，对粘附病毒的飞 沫进行阻隔，但这种方式仅起到隔绝病毒的作用，并不能有效灭活病 毒，因此，该类口罩在使用过程中和废弃时仍然存在很大的感染风险。
发明内容
本发明的目的在于提供一种吸附灭活病毒口罩产品，将吸附灭活 病毒纳米功能材料与无纺布材料复合制成吸附灭活病毒复合功能材 料，并将其加入到口罩外层疏水纺粘布和熔喷布滤材之间，制成吸附 灭活病毒口罩产品。此类口罩从外至内依次包括疏水纺粘布、吸附灭 活病毒无纺布、熔喷布滤材和吸水纺粘布四层。
此外，吸附和灭活病毒无机固体材料要应用于口罩的生产，需满 足高分散、不易脱落，且透气性良好的要求。因此，本发明将吸附灭 活病毒纳米功能材料与无纺布材料复合制成吸附灭活病毒无纺布。
可选地，所述吸附灭活病毒无纺布的制备方法包括，将吸附灭活 病毒纳米功能材料通过分散剂、胶黏剂涂覆固载在无纺布上，所述的 吸附灭活病毒无纺布上固载的吸附灭活病毒纳米功能材料质量含量 为0.2～50％，所述的胶黏剂在吸附灭活病毒无纺布上质量含量为 0.1～10％。
优选地，在所述吸附灭活病毒无纺布中，所述的无纺布生产用纤 维为涤纶、丙纶、锦纶、氨纶、氯纶、腈纶中的一种或几种混合，其 面密度为5～100g/m2。
优选地，所述胶黏剂为水性丙烯酸树脂、水性聚氨酯、聚乙烯醇 或聚醋酸乙烯中的一种或几种的混合。
优选地，所述分散剂为硬脂酸钠、十二烷基磺酸钠和焦磷酸钠中 的一种或几种的混合。
优选地，所述吸附灭活病毒纳米功能材料为ZrO2、ZnO、TiO2、 CaSiO3、Al2O3、SiO2、A型、X型分子筛中的一种或几种的混合，其 粒径分布范围为0.5～100nm。
可选地，所述吸附灭活病毒无纺布制备过程包括以下步骤：
(a)将分散剂、吸附灭活病毒纳米功能材料和水按质量比0.01～1： 0.1～20：79～99.9混合，在温度40-80℃条件下机械搅拌1～30min，然 后冷却至室温，获得一种稳定的吸附灭活病毒乳状液；
(b)室温下将胶黏剂用水稀释至质量含量为0.1～10％，并机械 搅拌1～30min，获得胶黏剂溶液；
(c)室温下将无纺布置于步骤(b)所述的胶黏剂溶液中浸泡 0.05～5分钟，然后40～120℃烘干，获得浸渍胶黏剂的无纺布；
(d)将步骤(c)所述的浸渍胶黏剂的无纺布浸泡在步骤(a) 所述的灭活病毒乳状液中0.05～10min，然后热轧、40～120℃烘干， 获得吸附灭活病毒无纺布。
优选地，所述分散剂、吸附灭活病毒纳米功能材料和水质量比为 0.02～0.2：1～16：83.8～98.9。
可选地，所述热轧温度为40～260℃，轧压线压力为2～400Kgf/cm。
进一步优选地，所述热轧温度为60～180℃，轧辊线压力为 10～150Kgf/cm。
本发明产生的有益效果包括：
本发明将吸附灭活病毒纳米功能材料与无纺布材料复合制成吸 附灭活病毒无纺布，并将其加入到口罩外层疏水纺粘布和熔喷布滤材 之间制成吸附灭活病毒口罩产品，解决了现有口罩不能吸附灭活病毒 的问题。
本发明制备的吸附灭活病毒口罩过滤效率不仅达到了GB/T 32610-2016《日常防护型口罩技术规范》规定的I级标准，该类口罩 产品不仅能够高效过滤粉尘，而且能够高效吸附灭活新型冠状病毒 (SARS-CoV-2)。
附图说明
图1为本发明制备的吸附灭活病毒无纺布(YG-F55)处理新型 冠状病毒(SARS-CoV-2)后，剩余上清液中病毒核酸的扩增曲线。
图2为本发明制备的吸附灭活病毒无纺布(YG-F55)处理新型 冠状病毒(SARS-CoV-2)后，剩余上清液中病毒含量相对于无处理 组的减少百分比。
图3为本发明制备的吸附灭活病毒口罩产品质量检测报告。
具体实施方式
下面结合实施例详述本发明，但本发明并不局限于这些实施例。 同时实施例只是给出实现制备吸附灭活病毒口罩生产的部分条件，但 并不意味着必须满足这些条件才可以达到此目的。
如无特别说明，实施例中所采用原料均来自商业购买，仪器设备 采用厂家推荐的参数设置。
实施例1吸附灭活病毒无纺布的制备
所采用的无纺布为商业购买的涤纶短纤维无纺布，面密度为35 g/m2。吸附灭活病毒无纺布的具体制备步骤为：
(1)取1g十二烷基磺酸钠，粒径分布为20～50nm的ZrO2 25g、 TiO2 35g、ZnO 20g和13X分子筛20g充分混合后加入到900g去 离子水中，在60℃条件下，机械搅拌20min，降至室温制成吸附灭 活病毒乳状液。
(2)将50g聚乙烯醇加入1000g去离子水中，机械搅拌20min， 制成胶黏剂水溶液。
(3)将幅宽涤纶短纤维无纺布浸泡到胶黏剂溶液中0.5min，然 后在80℃烘箱中放置6h烘干。
(4)将上述烘干的浸渍胶黏剂的无纺布浸泡到吸附灭活病毒乳 状液中，浸渍2min，然后用小型热轧机进行热轧处理，轧压温度为 120℃，轧压线压力为100Kgf/cm，然后在80℃烘箱中放置6h烘干， 获得吸附灭活病毒无纺布，命名为YG-F55。
称重测量吸附灭活病毒无纺布上固载的吸附灭活病毒纳米功能 材料质量含量为21.2％。
实施例2吸附灭活病毒无纺布(YG-F55)吸附灭活新型冠状病毒 (SARS-CoV-2)的体外试验
吸附灭活新型冠状病毒(SARS-CoV-2)的体外试验由安徽省疾 病预防控制中心(安徽CDC)实施。
测试材料：
1.受试物
实施例1中所制备的吸附灭活病毒无纺布YG-F55。
2.病毒株
SARS-CoV-2冠状病毒：由安徽CDC实验室从病人咽拭子中分离的病 毒BetaCoV/Anhui/SZ005/2020(EPI_ISL_413485)，第一代。
3.试验方法
取2cm×10cm面积的吸附灭活病毒无纺布(YG-F55)(含吸附灭 活病毒纳米功能材料18.8mg)放入无菌1.5ml EP管，加入800μl的 SARS-CoV-2病毒液(3.5×108拷贝数病毒)混合均匀后，每间隔5分 钟摇动一次。在室温下作用30分钟后，3000rpm离心5分钟，每管 吸取250μl上清液于新的无菌EP管中(保证每管吸取上清液等量)。 此后，对上清液进行处理后提取RNA。每管提取的RNA做3个重复 的qRT-PCR实验(逆转录定量聚合酶链式反应)。
4.试验结果
吸附灭活病毒无纺布(YG-F55)吸附灭活新型冠状病毒 (SARS-CoV-2)的体外试验结果如图1和图2所示。其中，无处理 是指对病毒液无处理。
5.结论
试验结果表明吸附灭活病毒无纺布(YG-F55)具有直接吸附灭 活新型冠状病毒(SARS-CoV-2)的作用，2cm×10cm面积的吸附灭 活病毒无纺布(YG-F55)(含吸附灭活病毒纳米功能材料18.8mg) 对3.5×108拷贝数的新型冠状病毒(SARS-CoV-2)吸附灭活效率为84％。
实施例3吸附灭活病毒口罩产品的制备
采用商业购买的疏水纺粘布、熔喷布滤材和吸水纺粘布，将实施 例1制备的吸附灭活病毒无纺布(YG-F55)放在疏水纺粘布(口罩 外层)和熔喷布滤材之间，并与吸水纺粘布(口罩内层)一起在口罩 生产机上制成口罩产品。此类口罩从外至内依次包括疏水纺粘布、吸 附灭活病毒无纺布、熔喷布滤材和吸水纺粘布四层。
实施例4吸附灭活病毒口罩产品性能检测
吸附灭活病毒口罩产品委托大连市产品质量检验检测研究院有 限公司依据GB/T32610-2016《日常防护型口罩技术规范》进行了检 测，结果如图3所示，口罩产品各项指标合格。具体指标为：过滤效 率≥99％(I级)，吸气阻力为100Pa(标准≤175)，呼气阻力为82Pa (标准≤145)，甲醛、大肠杆菌及致病性化脓菌均为未检出，细菌菌 落总数为8CFU/g(标准≤200)，真菌菌落总数为76CFU/g(标准≤ 100)。
以上所述，仅是本发明的几个实施例，并非对本发明做任何形式 的限制，虽然本发明以较佳实施例揭示如上，然而并非用以限制本发 明，任何熟悉本专业的技术人员，在不脱离本发明技术方案的范围内， 利用上述揭示的技术内容做出些许的变动或修饰均等同于等效实施 案例，均属于技术方案范围内。
Claims (8)
1.一种吸附灭活病毒口罩产品，其特征在于，在口罩外层和熔喷布滤材之间增加吸附灭活病毒无纺布，该类型口罩从外至内依次包括疏水纺粘布、吸附灭活病毒无纺布、熔喷布滤材和吸水纺粘布。
2.根据权利要求1所述的吸附灭活病毒口罩产品，其特征在于，所述吸附灭活病毒无纺布的制备方法为将吸附灭活病毒纳米功能材料通过分散剂、胶黏剂涂覆固载在无纺布上；所述的吸附灭活病毒无纺布上固载的吸附灭活病毒纳米功能材料质量含量为0.2～50％，所述的胶黏剂在吸附灭活病毒无纺布上质量含量为0.1～10％。
3.根据权利要求1或2所述的吸附灭活病毒口罩产品，其特征在于，所述的无纺布生产用纤维为涤纶、丙纶、锦纶、乙纶、氨纶、氯纶、腈纶中的一种或几种混合，其面密度为5～100g/m2。
4.根据权利2所述的吸附灭活病毒口罩产品，其特征在于，所述的胶黏剂为水性丙烯酸树脂、水性聚氨酯、聚乙烯醇或聚醋酸乙烯中的一种或几种混合。
5.根据权利2所述的吸附灭活病毒口罩产品，其特征在于，所述的分散剂为硬脂酸钠、十二烷基磺酸钠和焦磷酸钠中的一种或几种混合。
6.根据权利2所述的吸附灭活病毒口罩产品，其特征在于，所述的吸附灭活病毒纳米功能材料为ZrO2、ZnO、TiO2、CaSiO3、Al2O3、SiO2、A型、X型分子筛中的一种或几种混合，其粒径分布范围为0.5～100nm。
7.根据权利要求1或2所述的吸附灭活病毒口罩产品，其特征在于，所述吸附灭活病毒无纺布制备过程包括以下步骤：
(a)将分散剂、吸附灭活病毒纳米功能材料和水按质量比0.01～1：0.1～20：79～99.89混合，在温度40-80℃条件下机械搅拌1～30min，然后冷却至室温，获得一种稳定的吸附灭活病毒乳状液；
(b)室温下将胶黏剂用水稀释至质量含量为0.1～10％，并机械搅拌1～30min，获得胶黏剂溶液；
(c)室温下将无纺布置于步骤(b)所述的胶黏剂溶液中浸泡0.05～5min，然后40～120℃烘干，获得浸渍胶黏剂的无纺布；
(d)将步骤(c)所述的浸渍胶黏剂的无纺布浸泡在步骤(a)所述的吸附灭活病毒乳状液中0.05～10min，然后热轧、40～120℃烘干，获得吸附灭活病毒无纺布。
8.根据权利要求7所述的吸附灭活病毒口罩产品，其特征在于，所述热轧的条件为：热轧温度为40～260℃，轧压线压力为2～400Kgf/cm。
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