CN114889230A - 一种防水透湿防护服面料的生产方法 - Google Patents
一种防水透湿防护服面料的生产方法 Download PDFInfo
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Abstract
本发明公开了一种防水透湿防护服面料的生产方法,属于特种防护面料技术领域,将非织造布浸入活性炭水溶胶中,采用电化学原位沉积法处理和后处理后得到炭沉积非织造布;将炭沉积非织造布用浸渍液真空浸渍得到抗菌疏水非织造布;以抗菌疏水非织造布作为内层,纳米纤维膜为中间层,普通的非织造布作为外层,通过热压法热压成型,得到一种防水透湿防护服面料,在使用者出汗的情况下能够防止面料吸附在使用者体表,内层蒸发的水分能够被二氧化钛吸附,然后通过外层扩散开,有利于增加汗液等液体的蒸发,防止汗液堵住面料上的空隙,增加透气性,保持防护服内层干爽,增加使用体验,具有良好的应用潜力。
Description
技术领域
本发明属于特种防护面料技术领域,具体涉及一种防水透湿防护服面料的生产方法。
背景技术
防护服种类繁多,包括消防防护服、医用防护服、工业防护服等,根据防护功能划分,包括防辐射服、防寒服、隔热服等。其中医用防护服是指医护人员及进入特定医药卫生区域的人群所使用的防护性服装,其作用是隔离病菌、有害超细粉尘、酸碱性溶液、电磁辐射等,从而保证使用者的安全和保持环境清洁。
根据特殊的防护要求,医护人员需要长时间穿着防护服,在高温环境下使用者的汗液会浸湿防护服,会降低防护服的透气效果和防护效果,并且会给使用者带来较差的使用体验,所以需要一种能够增加透湿效果的防护服面料,改善使用效果。
发明内容
本发明的目的在于提供一种防水透湿防护服面料的生产方法,以解决背景技术中的问题。
本发明的目的可以通过以下技术方案实现:
一种防水透湿防护服面料的生产方法,包括如下步骤:
步骤一:将N,N-二甲基甲酰胺和丙酮按照3:2的质量比混合作为溶剂,将聚偏氟乙烯粉末和纳米二氧化钛倒入溶剂中,在70℃水浴的条件下搅拌6-8h,然后超声分散30min获得纺丝液,将纺丝液采用静电纺丝技术进行纺丝,得到纳米纤维膜;静电纺丝工艺参数为:纺丝箱温度22-28℃、纺丝箱相对湿度30-40%、推注速度0.8mm/min、电压18kV。
步骤二:将活性炭研磨粉碎,过150-180目筛得到活性炭粉末;将活性炭粉末加入去离子水中,超声分散3-5h,然后加入表面活性剂,在250-500r/min的条件下搅拌30-45min,得到分散液,然后向分散液中滴加质量分数为37%的盐酸调节分散液的pH值至4.5-5,继续搅拌1h,然后将分散液在75-85℃的条件下静置2h,得到活性炭水溶胶;
将非织造布浸入活性炭水溶胶中,采用电化学原位沉积法,以铜片为反应电极,铂片为参比电极,外加15V的额定电压,电化学沉积10-12h,将非织造布从反应液中取出,后处理后得到炭沉积非织造布。
步骤三:在冰水浴和磁力搅拌的条件下,将硝酸银和抗坏血酸钠加入蒸馏水中搅拌15-20min,再加入过氧化氢继续搅拌15-20min,然后滴加质量分数为8%的硼氢化钠溶液,搅拌20min后静置2-3h,加入质量分数为45%的乙醇溶液并混合,得到纳米银溶液;向纳米银溶液中加入含氟聚倍半硅氧烷和质量分数为6%的氧氟沙星溶液,搅拌混合后得到浸渍液;
将炭沉积非织造布依次用蒸馏水和无水乙醇洗涤并烘干,向浸渍灌中通入浸渍液,然后将烘干的炭沉积非织造布浸渍于浸渍液中,抽真空保压6-8h,取出浸渍后的炭沉积非织造布并依次用蒸馏水和无水乙醇洗涤并烘干至恒重,得到抗菌疏水非织造布。
步骤四:以抗菌疏水非织造布作为内层,纳米纤维膜为中间层,普通的非织造布作为外层,通过热压法热压成型,得到一种防水透湿防护服面料。
进一步地,溶剂、聚偏氟乙烯粉末和纳米二氧化钛的用量比为100g:15-18g:8g;
进一步地,表面活性剂为十二烷基磺酸钠。
进一步地,活性炭粉末、去离子水和表面活性剂的用量比为13-15g:120mL:0.35-0.4g。
进一步地,后处理的方法为,将电化学沉积后的非织造布用清水洗涤2-3次,在50-70℃的条件下干燥后辊压2-3次,将辊压后的非织造布继续用清水洗涤2-3次,然后浸泡在蒸馏水中,向蒸馏水中加入酯基季铵盐,搅拌溶解后静置1-2h,取出非织造布并在50-70℃的条件下干燥。酯基季铵盐和蒸馏水的用量比为15-20g:5kg。
进一步地,含氟聚倍半硅氧烷的制备方法为:将五氟戊硫醇和八乙烯基聚倍半硅氧烷加入到二氯甲烷中,然后加入引发剂混合均匀获得混合液,将混合液置于功率为250W的紫外灯照射10-15min,生成白色的沉淀后,将沉淀用无水乙醇洗涤3-5次并置于干燥箱中,在60-80℃的条件下烘干,获得含氟聚倍半硅氧烷。
进一步地,五氟戊硫醇、八乙烯基聚倍半硅氧烷、二氯甲烷、引发剂的用量比为38mL:11g:150mL:0.9g。
进一步地,引发剂为2,2-二甲氧基-苯基苯乙酮。
进一步地,硝酸银、抗坏血酸、蒸馏水、过氧化氢、硼氢化钠溶液和乙醇溶液的用量比为3g:0.05g:100mL:0.2mL:2.1mL:200mL。
进一步地,纳米银溶液、氧氟沙星溶液和含氟聚倍半硅氧烷的用量比为100mL:3-4mL:8g。
本发明的有益效果:
本发明中防水透湿防护服面料包括三层,抗菌疏水非织造布为内层,纳米纤维膜为中间层,普通的非织造布为外层,通过热压法热压成型。中间层聚偏氟乙烯具有良好的耐辐射性能,纳米二氧化钛具有良好的抗紫外线能力,增加面料的防晒性能;内层的抗菌疏水非织造布上沉积有一层活性炭粉末,在后处理过程中通过酯基季铵盐进行软化处理,使抗菌疏水非织造布变得蓬松,防止活性炭粉末对该层原料非织造布过度填充,从而改善内层的透气性,然后通过抽真空浸渍的方法对其进行浸渍处理,浸渍液中含有含氟聚倍半硅氧烷、纳米银和氧氟沙星,活性炭粉末可以负载这些抗菌物质,并且有利于将这些物质固定在面料的内层,减少分子迁移,从而增加面料的抗菌效果。该面料制成防护服后,使用者在长时间穿着情况下,防护服仍能保持良好的抗菌效果。面料内层含氟聚倍半硅氧烷具有良好的疏水性,中间层的二氧化钛具有亲水性,外层普通的非织造布具有吸水性,制成防护服后,在使用者出汗的情况下防止面料吸附在使用者体表,内层蒸发的水分能够被二氧化钛吸附,然后通过外层扩散开,有利于增加汗液等液体的蒸发,防止汗液堵住面料上的空隙,增加透气性,保持防护服内层干爽,增加使用体验,具有良好的应用潜力。并且外部的液体无法透过中间层和内层接触使用者皮肤,对外部环境起到有效地阻隔作用,保证其防护效果。
具体实施方式
下面将结合本发明实施例,对本发明实施例中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作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
实施例1
生产中间层,包括如下步骤:
将300gN,N-二甲基甲酰胺和200g丙酮混合作为溶剂,将90g聚偏氟乙烯粉末和40g纳米二氧化钛倒入溶剂中,在70℃水浴的条件下搅拌6-8h,然后超声分散30min获得纺丝液,将纺丝液采用静电纺丝技术进行纺丝,得到纳米纤维膜;
静电纺丝工艺参数为:纺丝箱温度28℃、纺丝箱相对湿度40%、推注速度0.8mm/min、电压18kV。
实施例2
生产中间层,包括如下步骤:
将300gN,N-二甲基甲酰胺和200g丙酮混合作为溶剂,将75g聚偏氟乙烯粉末和40g纳米二氧化钛倒入溶剂中,在70℃水浴的条件下搅拌6h,然后超声分散30min获得纺丝液,将纺丝液采用静电纺丝技术进行纺丝,得到纳米纤维膜;
静电纺丝工艺参数为:纺丝箱温度22℃、纺丝箱相对湿度30%、推注速度0.8mm/min、电压18kV。
实施例3
生产中间层,包括如下步骤:
将300gN,N-二甲基甲酰胺和200g丙酮混合作为溶剂,将80g聚偏氟乙烯粉末和40g纳米二氧化钛倒入溶剂中,在70℃水浴的条件下搅拌7h,然后超声分散30min获得纺丝液,将纺丝液采用静电纺丝技术进行纺丝,得到纳米纤维膜;
静电纺丝工艺参数为:纺丝箱温度25℃、纺丝箱相对湿度35%、推注速度0.8mm/min、电压18kV。
实施例4
生产抗菌疏水非织造布,包括如下步骤:
步骤S1:将活性炭研磨粉碎,过150目筛得到活性炭粉末;将130g活性炭粉末加入1.2L去离子水中,超声分散3h,然后加入3.5g十二烷基磺酸钠,在250r/min的条件下搅拌30min,得到分散液,然后向分散液中滴加质量分数为37%的盐酸调节分散液的pH值至4.5,继续搅拌1h,然后将分散液在75℃的条件下静置2h,得到活性炭水溶胶。
步骤S2:将非织造布浸入活性炭水溶胶中,采用电化学原位沉积法,以铜片为反应电极,铂片为参比电极,外加15V的额定电压,电化学沉积10h,将非织造布从反应液中取出,将电化学沉积后的非织造布用清水洗涤2次,在50℃的条件下干燥后辊压2次,将辊压后的非织造布继续用清水洗涤2次,然后浸泡在蒸馏水中,向蒸馏水中加入酯基季铵盐,搅拌溶解后静置1h,取出非织造布并在50℃的条件下干燥后处理后得到炭沉积非织造布;酯基季铵盐和蒸馏水的用量比为15g:5kg。
步骤S3:将76mL五氟戊硫醇和22g八乙烯基聚倍半硅氧烷加入到300mL二氯甲烷中,然后加入1.8g 2,2-二甲氧基-苯基苯乙酮并混合均匀获得混合液,将混合液置于功率为250W的紫外灯照射10min,生成白色的沉淀后,将沉淀用无水乙醇洗涤3-5次并置于干燥箱中,在60℃的条件下烘干,获得含氟聚倍半硅氧烷;
步骤S4:在冰水浴和磁力搅拌的条件下,将3g硝酸银和0.05g抗坏血酸钠加入100mL蒸馏水中搅拌15min,再加入0.2mL过氧化氢继续搅拌15min,然后滴加2.1mL质量分数为8%的硼氢化钠溶液,搅拌20min后静置2h,加入200mL质量分数为45%的乙醇溶液并混合,得到纳米银溶液;向300mL纳米银溶液中加入9mL质量分数为6%的氧氟沙星溶液和24g含氟聚倍半硅氧烷,搅拌混合后得到浸渍液。
步骤S5:将炭沉积非织造布依次用蒸馏水和无水乙醇洗涤并烘干,向浸渍灌中通入浸渍液,然后将烘干的炭沉积非织造布浸渍于浸渍液中,抽真空保压6h,取出浸渍后的炭沉积非织造布并依次用蒸馏水和无水乙醇洗涤并烘干至恒重,得到抗菌疏水非织造布。
实施例5
生产抗菌疏水非织造布,包括如下步骤:
步骤S1:将活性炭研磨粉碎,过160目筛得到活性炭粉末;将140g活性炭粉末加入1.2L去离子水中,超声分散4h,然后加入3.8g十二烷基磺酸钠,在400r/min的条件下搅拌35min,得到分散液,然后向分散液中滴加质量分数为37%的盐酸调节分散液的pH值至4.8,继续搅拌1h,然后将分散液在80℃的条件下静置2h,得到活性炭水溶胶。
步骤S2:将非织造布浸入活性炭水溶胶中,采用电化学原位沉积法,以铜片为反应电极,铂片为参比电极,外加15V的额定电压,电化学沉积11h,将非织造布从反应液中取出,将电化学沉积后的非织造布用清水洗涤2次,在60℃的条件下干燥后辊压3次,将辊压后的非织造布继续用清水洗涤3次,然后浸泡在蒸馏水中,向蒸馏水中加入酯基季铵盐,搅拌溶解后静置1.5h,取出非织造布并在60℃的条件下干燥后处理后得到炭沉积非织造布;酯基季铵盐和蒸馏水的用量比为18g:5kg。
步骤S3:将76mL五氟戊硫醇和22g八乙烯基聚倍半硅氧烷加入到300mL二氯甲烷中,然后加入1.8g 2,2-二甲氧基-苯基苯乙酮并混合均匀获得混合液,将混合液置于功率为250W的紫外灯照射12min,生成白色的沉淀后,将沉淀用无水乙醇洗涤4次并置于干燥箱中,在70℃的条件下烘干,获得含氟聚倍半硅氧烷;
步骤S4:在冰水浴和磁力搅拌的条件下,将3g硝酸银和0.05g抗坏血酸钠加入100mL蒸馏水中搅拌18min,再加入0.2mL过氧化氢继续搅拌18min,然后滴加2.1mL质量分数为8%的硼氢化钠溶液,搅拌20min后静置2.5h,加入200mL质量分数为45%的乙醇溶液并混合,得到纳米银溶液;向300mL纳米银溶液中加入10mL质量分数为6%的氧氟沙星溶液和24g含氟聚倍半硅氧烷,搅拌混合后得到浸渍液。
步骤S5:将炭沉积非织造布依次用蒸馏水和无水乙醇洗涤并烘干,向浸渍灌中通入浸渍液,然后将烘干的炭沉积非织造布浸渍于浸渍液中,抽真空保压7h,取出浸渍后的炭沉积非织造布并依次用蒸馏水和无水乙醇洗涤并烘干至恒重,得到抗菌疏水非织造布。
实施例6
生产抗菌疏水非织造布,包括如下步骤:
步骤S1:将活性炭研磨粉碎,过180目筛得到活性炭粉末;将150g活性炭粉末加入1.2L去离子水中,超声分散5h,然后加入4g十二烷基磺酸钠,在500r/min的条件下搅拌45min,得到分散液,然后向分散液中滴加质量分数为37%的盐酸调节分散液的pH值至5,继续搅拌1h,然后将分散液在85℃的条件下静置2h,得到活性炭水溶胶。
步骤S2:将非织造布浸入活性炭水溶胶中,采用电化学原位沉积法,以铜片为反应电极,铂片为参比电极,外加15V的额定电压,电化学沉积12h,将非织造布从反应液中取出,将电化学沉积后的非织造布用清水洗涤3次,在70℃的条件下干燥后辊压3次,将辊压后的非织造布继续用清水洗涤3次,然后浸泡在蒸馏水中,向蒸馏水中加入酯基季铵盐,搅拌溶解后静置2h,取出非织造布并在70℃的条件下干燥后处理后得到炭沉积非织造布;酯基季铵盐和蒸馏水的用量比为20g:5kg。
步骤S3:将76mL五氟戊硫醇和22g八乙烯基聚倍半硅氧烷加入到300mL二氯甲烷中,然后加入1.8g 2,2-二甲氧基-苯基苯乙酮并混合均匀获得混合液,将混合液置于功率为250W的紫外灯照射15min,生成白色的沉淀后,将沉淀用无水乙醇洗涤5次并置于干燥箱中,在80℃的条件下烘干,获得含氟聚倍半硅氧烷;
步骤S4:在冰水浴和磁力搅拌的条件下,将3g硝酸银和0.05g抗坏血酸钠加入100mL蒸馏水中搅拌20min,再加入0.2mL过氧化氢继续搅拌20min,然后滴加2.1mL质量分数为8%的硼氢化钠溶液,搅拌20min后静置3h,加入200mL质量分数为45%的乙醇溶液并混合,得到纳米银溶液;向300mL纳米银溶液中加入12mL质量分数为6%的氧氟沙星溶液和24g含氟聚倍半硅氧烷,搅拌混合后得到浸渍液。
步骤S5:将炭沉积非织造布依次用蒸馏水和无水乙醇洗涤并烘干,向浸渍灌中通入浸渍液,然后将烘干的炭沉积非织造布浸渍于浸渍液中,抽真空保压6-8h,取出浸渍后的炭沉积非织造布并依次用蒸馏水和无水乙醇洗涤并烘干至恒重,得到抗菌疏水非织造布。
实施例7
生产防水透湿防护服面料,包括如下步骤:
以实施例4中生产的抗菌疏水非织造布作为内层,实施例1中生产的纳米纤维膜为中间层,普通的非织造布作为外层,通过热压法热压成型,得到一种防水透湿防护服面料。
实施例8
生产防水透湿防护服面料,包括如下步骤:
以实施例5中生产的抗菌疏水非织造布作为内层,实施例2中生产的纳米纤维膜为中间层,普通的非织造布作为外层,通过热压法热压成型,得到防水透湿防护服面料。
实施例9
生产防水透湿防护服面料,包括如下步骤:
以实施例6中生产的抗菌疏水非织造布作为内层,实施例3中生产的纳米纤维膜为中间层,普通的非织造布作为外层,通过热压法热压成型,得到一种防水透湿防护服面料。
对比例1:在实施例9的基础上,不使用抗菌疏水非织造布,使用普通的非织造布作为内层和外层,以实施例3中生产的纳米纤维膜为中间层,通过热压法热压成型,得到防水透湿防护服面料。
对比例2:在实施例9的基础上,不使用纳米纤维膜为中间层,使用实施例6中生产的抗菌疏水非织造布作为内层,以实施例3中生产的纳米纤维膜为中间层,通过热压法热压成型,得到防水透湿防护服面料。
对实施例7-实施例9和对比例1、对比例2进行性能测试。
抗菌性实验:采用比浊法测定样品的抗菌性,取1.5L蒸馏水和30g营养肉汤培养基加入烧杯中,搅拌溶解后将溶液分装到66支试管中,每支15mL。剩余溶液装入锥形瓶中。将试管和锥形瓶在121℃的条件下高压蒸汽灭菌60min,备用;在超净工作台中将金黄色葡萄球菌接入上述锥形瓶中,在37℃下摇床培养到对数期,备用;使用移液枪接种150μL/mL的菌液,共接66支试管。实验分为5组:取11支试管加入0.5cm2的实施例7中面料,取11支试管加入0.5cm2的实施例8中面料,取11支试管加入0.5cm2的实施例9中面料,取11支试管加入0.5cm2的对比例1中面料,取11支试管加入0.5cm2的对比例2中面料,剩余取11支试管作为空白对照组,将66支接菌的试管放在温度为37℃,转速为140r/min的空气摇床中。记录时间1、3、5、7、9、11、13、15h下,三组中各取出1支使用紫外分光光度计以培养基为参比液测定菌液在OD600nm波长处的吸光值,然后记录数据并计算抑菌率,实验结果如表1所示。计算公式如下:
抑菌率(%)=(OD对照-OD实验)/OD对照×100
根据《医用一次性防护服技术要求》GB19082-2009,测试防护服外侧面沾水等级、断裂强度、断裂伸长率和透湿量,结果如表2所示。
表1
项目 | 实施例7 | 实施例8 | 实施例9 | 对比例1 | 对比例2 |
抑菌率(%) | 99 | 99 | 99 | 65 | 99 |
由表1可以看出,抗菌疏水非织造布作为内层的防护服面料的抗菌效果达到99%,抗菌效果好。
表2
由表2可以看出,实施例7-实施例9中的防护服透湿量高,满足医用一次性防护服技术要求。
需要说明的是,在本文中,诸如术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。
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)
1.一种防水透湿防护服面料的生产方法,其特征在于,包括如下步骤:
步骤一:将N,N-二甲基甲酰胺和丙酮按照3:2的质量比混合作为溶剂,将聚偏氟乙烯粉末和纳米二氧化钛倒入溶剂中,搅拌后超声分散获得纺丝液,将纺丝液静电纺丝,得到纳米纤维膜;
步骤二:将非织造布浸入活性炭水溶胶中,采用电化学原位沉积10-12h,后处理后得到炭沉积非织造布;将炭沉积非织造布依次用蒸馏水和无水乙醇洗涤并烘干,然后将烘干的炭沉积非织造布用浸渍液真空浸渍6-8h,然后依次用蒸馏水和无水乙醇洗涤,烘干至恒重后得到抗菌疏水非织造布;
步骤三:以抗菌疏水非织造布作为内层,纳米纤维膜为中间层,普通的非织造布作为外层,通过热压法热压成型,得到一种防水透湿防护服面料。
2.根据权利要求1所述的一种防水透湿防护服面料的生产方法,其特征在于,步骤一中溶剂、聚偏氟乙烯粉末和纳米二氧化钛的用量比为100g:15-18g:8g。
3.根据权利要求1所述的一种防水透湿防护服面料的生产方法,其特征在于,步骤二中活性炭水溶胶的制备方法为:将活性炭粉碎后过150-180目筛得到活性炭粉末;将活性炭粉末加入去离子水中,超声分散3-5h,加入表面活性剂搅拌30-45min,得到分散液,然后向分散液中滴加盐酸调节pH值至4.5-5,继续搅拌1h,在75-85℃的条件下静置2h,得到活性炭水溶胶。
4.根据权利要求3所述的一种防水透湿防护服面料的生产方法,其特征在于,活性炭粉末、去离子水和表面活性剂的用量比为13-15g:120mL:0.35-0.4g。
5.根据权利要求4所述的一种防水透湿防护服面料的生产方法,其特征在于,表面活性剂为十二烷基磺酸钠。
6.根据权利要求1所述的一种防水透湿防护服面料的生产方法,其特征在于,步骤二中后处理的方法为,将电化学沉积后的非织造布用清水洗涤2-3次,干燥后辊压2-3次,将辊压后的非织造布继续用清水洗涤2-3次,然后浸泡在蒸馏水中,向蒸馏水中加入酯基季铵盐搅拌溶解并静置1-2h,取出非织造布并在50-70℃的条件下干燥。
7.根据权利要求1所述的一种防水透湿防护服面料的生产方法,其特征在于,步骤二中浸渍液的制备方法为:在冰水浴和磁力搅拌的条件下,将硝酸银和抗坏血酸钠加入蒸馏水中搅拌15-20min,再加入过氧化氢搅拌15-20min,滴加硼氢化钠溶液搅拌20min并静置2-3h,混合乙醇溶液后得到纳米银溶液;向纳米银溶液中加入含氟聚倍半硅氧烷和氧氟沙星溶液,搅拌混合得到浸渍液。
8.根据权利要求7所述的一种防水透湿防护服面料的生产方法,其特征在于,含氟聚倍半硅氧烷的制备方法为:将五氟戊硫醇和八乙烯基聚倍半硅氧烷加入到二氯甲烷中,加入引发剂并混合均匀得到混合液,将混合液置于紫外灯下照射10-15min,生成沉淀后将沉淀用无水乙醇洗涤3-5次,干燥后获得含氟聚倍半硅氧烷。
9.根据权利要求8所述的一种防水透湿防护服面料的生产方法,其特征在于,五氟戊硫醇、八乙烯基聚倍半硅氧烷、二氯甲烷、引发剂的用量比为38mL:11g:150mL:0.9g。
10.根据权利要求9所述的一种防水透湿防护服面料的生产方法,其特征在于,引发剂为2,2-二甲氧基-苯基苯乙酮。
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