CN114190632A - 一种抗菌透气口罩及其制备方法 - Google Patents
一种抗菌透气口罩及其制备方法 Download PDFInfo
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- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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Abstract
本发明公开了一种抗菌透气口罩及其制备方法,属于纺织品技术领域。所述抗菌透气口罩包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;所述内罩以重量份为单位,包括以下原料:亚麻纤维60‑80份、负载纳米银聚酰胺6纤维4‑8份、苎麻纤维25‑36份;所述外罩以重量份为单位,包括以下原料:壳聚糖纤维5‑10份、罗布麻纤维20‑30份、竹纤维30‑45份和铜氨纤维4‑8份。本发明的口罩制备过程中,通过采用壳聚糖纤维、负载纳米银聚酰胺6纤维、苎麻纤维等原料,提高了口罩的抗菌性和透气性。
Description
技术领域
本发明属于纺织品技术领域,具体涉及一种抗菌透气口罩及其制备方法。
背景技术
当前人类的某些疾病是通过呼吸道传染的,如SARS病毒、副流感病毒、呼吸道合胞病毒、冠状病毒、腺病毒、流行性腮腺炎病毒、麻疹病毒、风疹病毒、水痘—带状疱疹病毒等。这些病毒严重威胁着人的健康,甚至危及人的生命。很多病毒存在于病人的鼻涕、口涎、痰液等分泌物中,可借助空气、飞沫传播,另外与污染的食具也有一定关系,给预防带来很大的难度,容易发生流行甚至世界性的大流行。在相对密闭环境工作的人、经常处于人群密集环境中的人、大中小学学生最容易受到传染。当前对于预防流行性传染病的主要办法就是戴口罩,另外就是经常用消毒液对环境进行消毒,有条件者接种疫苗。口罩是一种面罩,它的事业从古至今已经有2500年的历史。市场上流通的普通口罩一般是脱脂棉纱或者无纺布制作而成,阻挡空气中悬浮的灰尘颗粒,但是并不能有效的抗菌、吸湿、祛味,因此很大程度上影响了人们的身体健康。在现有技术中,化工等通过呼吸道有害人体的行业所用口罩,结构都非常复杂。传统的医用口罩基本上是采用相同品种的无菌纱布制成,由于纱布孔隙大,阻挡作用有限,为了加强阻挡效果必须用很多层,例如8-12层,在一定程度上可以起到阻挡借空气、飞沫传播的病毒进入人们呼吸道,长时间使用或热天使用会感到不舒服,影响正常呼吸。
目前竹炭功能的口罩很多都是采用竹炭纤维布,与传统的医用口罩相比,吸附功能提高不明显,而且依然采用的是很多层的结构,影响透气性。
为解决上述技术问题,中国专利文献“环保竹炭口罩及其制备方法(专利号为:ZL201510277423.2)”公开了一种环保竹炭口罩包括内罩和外罩,内罩设有拆卸口,拆卸口内装有过滤层,其中,所述过滤层包括竹炭粉。该发明将竹炭粉制成微胶囊,采用壳聚糖作为囊层,而且壳聚糖也具有抗菌杀菌作用,而且作为天然材料,对人体没有任何副作用,纳米竹炭粉包覆在微胶囊内,使其缓慢发挥作用,蜂蜡作为天然的粘合剂,将微胶囊整理到纺织品上,不易被洗涤脱去,赋予口罩持久的抗菌、吸湿、祛味、保健功能。但是该环保竹炭口罩仍然存在透气性和抑菌性有待提高的问题。
发明内容
本发明的目的是提供一种抗菌透气口罩及其制备方法,以解决在中国专利文献“环保竹炭口罩及其制备方法(专利号为:ZL201510277423.2)”公开的基础上,如何优化组分、用量、工艺等,提高口罩透气性和抑菌性的问题。
为了解决以上技抗菌透气口罩保暖效术问题,本发明采用以下技术方案:
一种抗菌透气口罩,所述抗菌透气口罩包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维60-80份、负载纳米银聚酰胺6纤维4-8份、苎麻纤维25-36份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维5-10份、罗布麻纤维20-30份、竹纤维30-45份和铜氨纤维4-8份;
所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于100-120℃真空箱中烘干水分,然后切片,切片在90-95℃烘箱中预结晶3h,烘干表面水分;
b.将切片、纳米二氧化钛和纳米二氧化银以2000-3000r/min的速度混合,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为260-270、270-280、265-275、265-275,螺杆转速为37-40/rpm,卷绕速度为810-820m/min,牵伸温度为55-65℃,牵伸倍速为3.4-3.6;
所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层。
优选地,所述内罩以重量份为单位,包括以下原料:亚麻纤维70份、负载纳米银聚酰胺6纤维6份、苎麻纤维30份。
优选地,所述外罩以重量份为单位,包括以下原料:壳聚糖纤维8份、罗布麻纤维25份、竹纤维38份和铜氨纤维6份。
优选地,所述步骤a中切片烘干后的含水量小于0.05%。
优选地,所述步骤b中2000-3000r/min的速度搅拌30-60min。
优选地,所述步骤c中调节螺杆四区的温度为265、275、270、270,螺杆转速为38/rpm,卷绕速度为815m/min,牵伸温度为60℃,牵伸倍速为3.5。
优选地,所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,再采用压膜机进行压制,即得抑菌无纺布。
优选地,所述纺丝过程中,纺丝距离为12-18cm,纺丝速度为0.4-0.6mL/h,纺丝电压为16-20kV。
一种抗菌透气口罩及其制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为110-130Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再进行水刺加固,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩;
优选地,所述步骤S2使用千里光提取液高压喷射进行水刺加固,水压为140-160Bar。
本发明具有以下有益效果:
(1)本发明中采用的壳聚糖纤维、负载纳米银聚酰胺6纤维、苎麻纤维的直径比较大、空隙较大,且口罩各原料纤维的交织空隙和纤维间缝隙相差不大,从而能够提高口罩的透气性;并且本发明采用的壳聚糖纤维几乎无卷曲,纤维间的抱合力较差,使纤维间孔隙较大,从而提高透气性;苎麻纤维是具有抑菌、透气、凉爽、防腐、防霉、吸汗等功能的纺织面料,苎麻纤维有“天然纤维之王”的美誉,其独有的活性空腔导汗纤维结构可以使吸入的汗液渗透到空腔内并快速导出,让它具备了优越的透气性和传热性,应用到本发明中也能够提高口罩的透气性;负载纳米银聚酰胺6纤维的纤维较细、孔洞空隙较小,使口罩的透气量上升。
(2)本发明口罩采用的原料中含有壳聚糖纤维,壳聚糖是一种广谱抗菌物质,对细菌、真菌等微生物均具有抑制作用。抑菌过程中,壳聚糖中的氨基带有正电荷,与带有负电荷的细菌细胞膜结合,损坏了细菌细胞壁的完整性,使细菌不能生长繁殖,从而起到抑菌作用。负载纳米银聚酰胺6纤维中负载有纳米银,银离子与吸附在表面的水和氧形成活性很强的羟基自由基和活性氧,能够与细菌细胞膜的蛋白质中的巯基或氨基发生反应,生成二氧化碳和水,从而杀死细菌。苎麻纤维含有叮咛、嘧啶、嘌呤等微量元素,对金黄色葡萄球菌、绿脓杆菌、大肠杆菌等起到抑制效果,具有天然抑菌、防螨、防臭功能。三种纤维一起使用,共同提高了口罩的抗菌性能。
具体实施方式
为了更好地理解本发明,现采用以下实施例加以说明,以下实施例属于本发明的保护范围,但不限制本发明的保护范围。
以下实施例中,所述抗菌透气口罩,包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维60-80份、负载纳米银聚酰胺6纤维4-8份、苎麻纤维25-36份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维5-10份、罗布麻纤维20-30份、竹纤维30-45份和铜氨纤维4-8份;
所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于100-120℃真空箱中烘干水分,然后切片,切片在90-95℃烘箱中预结晶3h,烘干表面水分,使切片含水量小于0.05%;
b.将切片、纳米二氧化钛和纳米二氧化银以2000-3000r/min的速度搅拌30-60min,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为260-270、270-280、265-275、265-275,螺杆转速为37-40/rpm,卷绕速度为810-820m/min,牵伸温度为55-65℃,牵伸倍速为3.4-3.6;
所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层;
所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,纺丝过程中,纺丝距离为12-18cm,纺丝速度为0.4-0.6mL/h,纺丝电压为16-20kV,再采用压膜机进行压制,即得抑菌无纺布。
一种抗菌透气口罩及其制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为110-130Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再用千里光提取液高压喷射进行水刺加固,水压为140-160Bar,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩。
实施例1
一种抗菌透气口罩,包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维70份、负载纳米银聚酰胺6纤维6份、苎麻纤维30份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维8份、罗布麻纤维25份、竹纤维38份和铜氨纤维6份;
所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于115℃真空箱中烘干水分,然后切片,切片在92℃烘箱中预结晶3h,烘干表面水分,使切片含水量小于0.05%;
b.将切片、纳米二氧化钛和纳米二氧化银以2600r/min的速度搅拌40min,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为265、275、270、270,螺杆转速为38/rpm,卷绕速度为815m/min,牵伸温度为60℃,牵伸倍速为3.5;
所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层;
所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,纺丝过程中,纺丝距离为16cm,纺丝速度为0.5mL/h,纺丝电压为18kV,再采用压膜机进行压制,即得抑菌无纺布。
一种抗菌透气口罩及其制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为120Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再用千里光提取液高压喷射进行水刺加固,水压为150Bar,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩。
实施例2
一种抗菌透气口罩,包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维75份、负载纳米银聚酰胺6纤维8份、苎麻纤维25份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维8份、罗布麻纤维30份、竹纤维30份和铜氨纤维7份;
所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于105℃真空箱中烘干水分,然后切片,切片在90℃烘箱中预结晶3h,烘干表面水分,使切片含水量小于0.05%;
b.将切片、纳米二氧化钛和纳米二氧化银以2000-3000r/min的速度搅拌45min,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为265、275、270、270,螺杆转速为39/rpm,卷绕速度为815m/min,牵伸温度为65℃,牵伸倍速为3.6;
所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层;
所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,纺丝过程中,纺丝距离为12cm,纺丝速度为0.6mL/h,纺丝电压为20kV,再采用压膜机进行压制,即得抑菌无纺布。
一种抗菌透气口罩及其制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为110Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再用千里光提取液高压喷射进行水刺加固,水压为160Bar,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩。
实施例3
一种抗菌透气口罩,包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维80份、负载纳米银聚酰胺6纤维4份、苎麻纤维30份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维10份、罗布麻纤维20份、竹纤维35份和铜氨纤维8份;
所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于120℃真空箱中烘干水分,然后切片,切片在93℃烘箱中预结晶3h,烘干表面水分,使切片含水量小于0.05%;
b.将切片、纳米二氧化钛和纳米二氧化银以2500r/min的速度搅拌60min,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为270、280、275、275,螺杆转速为38/rpm,卷绕速度为815m/min,牵伸温度为55℃,牵伸倍速为3.4;
所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层;
所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,纺丝过程中,纺丝距离为16cm,纺丝速度为0.4mL/h,纺丝电压为16kV,再采用压膜机进行压制,即得抑菌无纺布。
一种抗菌透气口罩及其制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为120Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再用千里光提取液高压喷射进行水刺加固,水压为140Bar,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩。
实施例4
一种抗菌透气口罩,包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维60份、负载纳米银聚酰胺6纤维5份、苎麻纤维36份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维5份、罗布麻纤维26份、竹纤维45份和铜氨纤维4份;
所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于100℃真空箱中烘干水分,然后切片,切片在95℃烘箱中预结晶3h,烘干表面水分,使切片含水量小于0.05%;
b.将切片、纳米二氧化钛和纳米二氧化银以3000r/min的速度搅拌30min,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为260、270、265、265,螺杆转速为40/rpm,卷绕速度为820m/min,牵伸温度为60℃,牵伸倍速为3.5;
所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层;
所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,纺丝过程中,纺丝距离为18cm,纺丝速度为0.5mL/h,纺丝电压为18kV,再采用压膜机进行压制,即得抑菌无纺布。
一种抗菌透气口罩及其制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为130Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再用千里光提取液高压喷射进行水刺加固,水压为150Bar,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩。
对比例1
与实施例1的制备方法基本相同,不同之处在于制备抗菌透气口罩的原料中缺少壳聚糖纤维、负载纳米银聚酰胺6纤维、苎麻纤维。
对比例2
与实施例1的制备方法基本相同,不同之处在于制备抗菌透气口罩的原料中缺少壳聚糖纤维。
对比例3
与实施例1的制备方法基本相同,不同之处在于制备抗菌透气口罩的原料中缺少负载纳米银聚酰胺6纤维。
对比例4
与实施例1的制备方法基本相同,不同之处在于制备抗菌透气口罩的原料中缺少苎麻纤维。
对比例5
采用中国专利文献“环保竹炭口罩及其制备方法(专利号为:ZL201510277423.2)”中实施例1中所述方法制备抗菌透气口罩。
试验案例1
根据GB/T5453-1997《纺织品织物透气性的测定》采用数字式织物测定仪测定实施例1-4和对比例1-5的抗菌透气口罩的透气性,其测试结果见下表。
由上表可以看出,本发明实施例1-4制得口罩的透气率远大于对比例5的口罩的透气率。
本发明中采用的壳聚糖纤维、负载纳米银聚酰胺6纤维、苎麻纤维的直径比较大、空隙较大,且口罩各原料纤维的交织空隙和纤维间缝隙,相差不大,从而能够提高口罩的透气性;并且本发明采用的壳聚糖纤维几乎无卷曲,纤维间的抱合力较差,使纤维间孔隙较大,从而提高透气性;苎麻纤维是具有抑菌、透气、凉爽、防腐、防霉、吸汗等功能的纺织面料,苎麻纤维有“天然纤维之王”的美誉,其独有的活性空腔导汗纤维结构可以使吸入的汗液渗透到空腔内并快速导出,让它具备了优越的透气性和传热性,应用到本发明中也能够提高口罩的透气性;负载纳米银聚酰胺6纤维的纤维较细、孔洞空隙较小,使口罩的透气量上升。
试验案例2
参照GB/T 20944.3-2008《纺织品抗菌性能的评价第3部分:振荡法》,实施例1-4和对比例1-5的抗菌透气口罩面料剪成约5mm*5mm大小的碎片。将灭菌后的实施例1-4和对比例1-5的口罩碎片分别放入一定浓度的金黄色葡萄球菌菌液和大肠杆菌菌液的三角烧瓶中,在24℃、150r/min条件下振荡18-24h,测定振荡前及振荡一定时间后菌液的活菌浓度,计算抑菌率,测试结果如下表所示。
由上表可以看出本发明的口罩抗菌性能大于对比例5的抗菌性能。
本发明口罩采用的原料中含有壳聚糖纤维,壳聚糖是一种广谱抗菌物质,对细菌、真菌等微生物均具有抑制作用。抑菌过程中,壳聚糖中的氨基带有正电荷,与带有负电荷的细菌细胞膜结合,损坏了细菌细胞壁的完整性,使细菌不能生长繁殖,从而起到抑菌作用。负载纳米银聚酰胺6纤维中负载有纳米银,银离子与吸附在表面的水和氧形成活性很强的羟基自由基和活性氧,能够与细菌细胞膜的蛋白质中的巯基或氨基发生反应,生成二氧化碳和水,从而杀死细菌。苎麻纤维含有叮咛、嘧啶、嘌呤等微量元素,对金黄色葡萄球菌、绿脓杆菌、大肠杆菌等起到抑制效果,具有天然抑菌、防螨、防臭功能。三种纤维一起使用,共同提高了口罩的抗菌性能。
以上内容不能认定本发明具体实施只局限于这些说明,对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思前提下,还可以做出若干简单推演或替换,都应当视为属于本发明由所提交的权利要求书确定的专利保护范围。
Claims (9)
1.一种抗菌透气口罩,其特征在于,所述抗菌透气口罩包括内罩和外罩,内罩设有拆卸口,拆卸口内装有抑菌过滤层;
所述内罩以重量份为单位,包括以下原料:亚麻纤维60-80份、负载纳米银聚酰胺6纤维4-8份、苎麻纤维25-36份;
所述外罩以重量份为单位,包括以下原料:壳聚糖纤维5-10份、罗布麻纤维20-30份、竹纤维30-45份和铜氨纤维4-8份。
其中,所述负载纳米银壳聚糖纤维的制备方法为:
a.将聚酰胺6母粒置于100-120℃真空箱中烘干水分,然后切片,切片在90-95℃烘箱中预结晶3h,烘干表面水分;
b.将切片、纳米二氧化钛和纳米二氧化银以2000-3000r/min的速度混合,再用双螺杆挤出机挤出,切粒,得到纤维母粒;
c.将纤维母粒用螺杆挤出机挤出制成负载纳米银聚酰胺6纤维,调节螺杆四区的温度为260-270、270-280、265-275、265-275,螺杆转速为37-40/rpm,卷绕速度为810-820m/min,牵伸温度为55-65℃,牵伸倍速为3.4-3.6;
其中,所述过滤层的制备方法包括以下步骤:
将块状竹炭破碎成3cm大小的竹炭块、接着放入40%的硝酸溶液中浸泡5h,然后烘干,接着锤式粉碎至120目,然后经过气流磨、双向旋转球磨,得到粒径小于100nm的竹炭粉,然后将竹炭粉作为芯材,壳聚糖作为壳材,制备成微胶囊,微胶囊的囊层厚度为1μm,直径为5μm,芯囊厚度比为12:1,通过蜂蜡作为粘结剂在75℃下将微胶囊粘合到抑菌无纺布上,得到抑菌过滤层;
其中,所述的抗菌透气口罩的制备方法,所述包括以下步骤:
S1:将亚麻纤维、负载纳米银聚酰胺6纤维和苎麻纤维置于蒸馏水中,充分搅拌均匀,通过铺网机平铺成网,进行水刺,水刺工艺中时水压为110-130Bar,得内罩;
S2:将壳聚糖纤维、罗布麻纤维、竹纤维、铜氨纤维混合后置于千里光提取液中,充分搅拌均匀,通过铺网机将混合纤维平铺于内罩的表面,得外罩,再进行水刺加固,得口罩无纺布;
S3:在内罩上制作拆卸口,在拆卸口内装入抑菌过滤层;
S4:烘干,整理,添加全塑鼻梁条和耳带,灭菌,烘干,得抗菌透气无纺布医用口罩。
2.根据权利要求1所述的抗菌透气口罩,其特征在于,所述内罩以重量份为单位,包括以下原料:亚麻纤维70份、负载纳米银聚酰胺6纤维6份、苎麻纤维30份。
3.根据权利要求1或2所述的抗菌透气口罩,其特征在于,所述外罩以重量份为单位,包括以下原料:壳聚糖纤维8份、罗布麻纤维25份、竹纤维38份和铜氨纤维6份。
4.根据权利要求4所述的抗菌透气口罩,其特征在于,所述步骤a中切片烘干后的含水量小于0.05%。
5.根据权利要求4所述的抗菌透气口罩,其特征在于,所述步骤b中2000-3000r/min的速度搅拌30-60min。
6.根据权利要求5所述的抗菌透气口罩,其特征在于,所述步骤c中调节螺杆四区的温度为265、275、270、270,螺杆转速为38/rpm,卷绕速度为815m/min,牵伸温度为60℃,牵伸倍速为3.5。
7.根据权利要求1-6任一项所述的抗菌透气口罩,其特征在于,所述抑菌无纺布的制备方法为:以二甲基苯甲酰氨为溶剂,将壳聚糖纤维和苎麻纤维的纺丝液倒入注射泵中,将亚麻纤维包裹在纳米纤维接收装置上,采用电纺丝机进行纺丝,将壳聚糖纤维和苎麻纤维复合在亚麻纤维表面,再采用压膜机进行压制,即得抑菌无纺布。
8.根据权利要求7所述的抗菌透气口罩,其特征在于,所述纺丝过程中,纺丝距离为12-18cm,纺丝速度为0.4-0.6mL/h,纺丝电压为16-20kV。
9.根据权利要求1所述的抗菌透气口罩的制备方法,其特征在于,所述步骤S2使用千里光提取液高压喷射进行水刺加固,水压为140-160Bar。
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