CN112501711A - 一种具有抑菌作用的无纺布及其制备方法 - Google Patents
一种具有抑菌作用的无纺布及其制备方法 Download PDFInfo
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- CN112501711A CN112501711A CN202011417521.9A CN202011417521A CN112501711A CN 112501711 A CN112501711 A CN 112501711A CN 202011417521 A CN202011417521 A CN 202011417521A CN 112501711 A CN112501711 A CN 112501711A
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- copper
- fiber
- fibers
- bamboo
- cupronickel
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Classifications
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Abstract
本发明公开了一种具有抑菌作用的无纺布,包括以下组分:铜改性纤维1‑100%、铜氨纤维0‑99%、原竹纤维0‑99%和天丝0‑99%;本发明通过科学合理的配比,通过纺织工艺将铜改性纤维、铜氨纤维、原竹纤维和天丝纺织成无纺布,接着将纺织成的无纺布裁剪成面膜布结构,制备方法简单;把具有抑菌功能纳米铜与纤维有效结合,形成一种具有抑菌功能的纤维铜改性纤维,同时按照不同的比例组合形成不同种类和抑菌功效的面膜布,该面膜布质感轻盈、手感柔软、足够贴肤、舒适透气、同时具有一定抑菌功效且性价比高的理想面膜布材料;而且该面膜布增加纳米白铜的抑菌元素,省去了面膜精华液中部分的防腐剂,使产品更加天然安全少刺激。
Description
技术领域
本发明涉及面膜布技术领域,具体为一种具有抑菌作用的无纺布及其制备方法。
背景技术
近几年贴式面膜飞速发展促进了面膜布厂家在面膜材质和款式上不断创新,开发出各式各样的面膜布产品;目前市场上的面膜布材质主要有无纺布、蚕丝、概念隐形蚕丝、水凝胶、纯棉纤维、生物纤维、粘胶纤维、天丝和竹炭纤维。
无纺布面膜是市场上最常见的面膜之一,方便消费者使用,无纺布基材蓬松柔软,均匀性好,不产生纤维屑,成本相对较低,但无纺布与皮肤亲和力不佳,仅仅作为精华液的载体,厚重不服帖,透气性一般,使用时如同白色面具,视觉感差,无纺布生产过程中会消耗大量的石油资源,不属于环境友好型产品。
蚕丝的成分是蚕丝纤维和活性蚕丝蛋白,蚕丝蛋白中含有人体所需的18种氨基酸,拥有良好的透气性和吸水性,被誉为人体“第2皮肤”,真正的蚕丝面膜布不具有拉伸性、易破、成型不佳且成本高,使用受到一定限制。
概念隐形蚕丝是采用天然植物纤维经过先进的有机溶剂纺丝工艺而制得,比无纺布更具弹力和韧性,吸附大量精华液后可以紧密贴在皮肤表面达到透明隐形的效果且敷膜时可以自由行动,是无纺布的升级品,因其薄如蚕翼,拉升如丝,所以叫“蚕丝面膜”,但它的成分却与蚕丝无关,概念隐形蚕丝可以根据不同脸型拉伸调节,使之覆盖到肌肤的每个角落,而且具有真丝的光泽和丝滑感,是目前最受消费者喜爱的面膜材质之一。
水凝胶面膜是以亲水性凝胶作为面膜基质,富含大量皮肤所需的营养和水分,当水凝胶面膜贴在皮肤上时,面膜内所含的营养成分逐步渗透到皮肤里,对皮肤无刺激。
纯棉纤维由100%纯天然纤维素制成,交叉铺网法制成水刺不织布结构,具有吸水后不易变型,纵向和横向拉力强,洁白柔软、贴肤性好等特性。纯棉布膜加厚加密,具有强吸水能力,可吸附高浓度的营养物质并可有效防止营养成分蒸发和流失,缺点是棉絮可能引起皮肤过敏。
生物纤维和粘胶纤维生物纤维是木醋杆菌自然发酵产生的微生物纤维素,具有优异服帖保水能力,生物相容好,无刺激,生物纤维具有类似于皮肤的功能,纤维直径为5080m,能深入皮肤沟壑修复细胞,并紧紧抓住肌肤细胞产生向上提拉作用,然而生物纤维面膜生产存在工艺复杂、成本高、要求严格、面膜灌装工艺困难等缺点,粘胶纤维是以棉或其他天然纤维为原料生产的纤维素纤维,其含湿率符合人体皮肤的生理要求,具有光滑凉爽、透气、抗静电等特点,粘胶纤维具有棉的舒适感,消除了棉絮可能引起的过敏风险。
天丝是一种源自奥地利兰木的木质纤维,干强略低于涤纶,但明显高于一般的粘胶纤维,湿强比粘胶纤维有明显改善,天丝面膜的刚性和吸湿性好,横截面为圆形或椭圆形,光泽优美,手感柔软,悬垂性和飘逸性好。
竹炭纤维面膜是取毛竹为原料,采用纯氧高温及氮气阻隔延时的煅烧新工艺和新技术,使得竹炭天生具有的微孔更细化和蜂窝化,然后再与具有蜂窝状微孔结构趋势的聚酯改性切片熔融纺丝而制成,这种独特的纤维结构使竹炭纤维面膜具有较好的吸湿透气性和抑菌功效。
但目前市场上仍未有一种比较理想的面膜布,其质感轻盈、手感柔软、足够贴肤、舒适透气、同时具有一定抑菌功效且性价比高的理想面膜布材料。
发明内容
本发明的目的在于提供一种具有抑菌作用的无纺布及其制备方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种具有抑菌作用的无纺布,包括以下组分:铜改性纤维1-100%、铜氨纤维0-99%、原竹纤维0-99%和天丝0-99%。
一种具有抑菌作用的无纺布的制备方法,包括以下步骤:
S1、铜改性纤维;
S1.1、纳米白铜粒子改性:通过金属研磨机将金属白铜研磨成颗粒状,制成纳米白铜粒子,然后将颗粒状的纳米白铜粒子加入到苯并三氮唑溶液中混合均匀,并浸泡30~60min,然后将浸泡后的纳米白铜粒子在80~120℃条件下干燥,得到改性纳米白铜粒子;
S1.2、制备母粒:在高粘度聚酯切片中,加入S1.1得到的改性纳米白铜粒子,然后烙融造粒得到铜改性聚酯母粒;
S1.3、制备纺丝原料:将S1.2得到的铜改性聚酯母粒与20~100倍重量份的聚酯切片混合,再加入分散剂和润滑剂搅拌混合均匀,真空状态下干燥12~20min,得到纺丝原料;
S1.4、烙融喷丝:将S1.3制备的纺丝原料加入双螺杆挤出机内,并且在烙融温度为280~300℃条件下烙融纺丝,制得铜改性纤维;
S2、铜氨纤维;
S2.1、将铜氨纤维、改性蛋白纤维混纺得到铜氨混纺坯布;
S2.2、一级水洗:将铜氨混纺坯布加入到水洗机中,加入中性清洗剂进行清洗;
S2.3、一级精练:将水洗后的铜氨混纺坯布浸泡在水中,加入中性精练剂溶液处理;
S2.4、二级水洗:将铜氨混纺坯布再次放入水洗机中,加入中性清洗剂进行清洗;
S2.5、二级精炼:将水洗后的铜氨混纺坯布再次浸泡在水中,加入中性精练剂溶液处理;
S2.6、染色:将精练后的铜氨混纺坯布放入染色机中进行染色;
S2.7、漂洗、烘干:然后使染色后的铜氨混纺坯布依次经过漂洗和烘干处理,得到铜氨纤维抗菌混纺面料;
S3、原竹纤维;
S3.1、浸泡:将竹子剖成两半或从中心穿孔,得到半圆状竹材或空心竹材,作为预处理料,将预处理料用水浸泡12h~48h后,得到浸泡后的竹材;
S3.2、帚化:将S3.1中得到的浸泡后的竹材放在帚化机中帚化3次,第1次在帚化齿间隙为5mm~8mm的条件下帚化,第2次和第3次在帚化齿间隙为3mm~4mm的条件下帚化,得到平展竹材;
S3.3、软化:在常温的条件下,将S3.2中得到的平展竹材在软化液中浸泡1h~3h后,接着平展竹材继续在在软化液中浸泡并加热至70℃,保温30min后,得到软化竹材;
S3.4、开纤处理:将S3.3中得到的软化竹材用水冲洗后梳解、开纤,得到粗竹纤维;
S3.5、将S3.4中得到的粗竹纤维浸泡在温度为100℃的蒸煮液中,蒸煮30min~80min后,得到蒸煮后的粗竹纤维;
S3.6、将S3.5中得到的蒸煮后的粗竹纤维用硫酸溶液或盐酸溶液中和清洗至pH为6~7,然后用水冲洗至脱胶完毕,将水洗后的粗竹纤维在转速为1000rpm~1500rpm的条件下离心脱水5min~10min,然后在温度为50℃的条件下干燥30min~40min,得到竹原纤维;
S4、天丝;
S4.1、先把纤维素浆粕与N-甲基吗啉N-氧化物(NMMO)均匀混合,然后加入添加剂(氯化钙)和抗氧化剂(1,2-丙二醇)以防止纤维在溶解过程中氧化分解,并调节溶液的粘性和改善纤维的性能;
S4.2、控制水分的含量小于133%,然后在85~125℃下溶解,得到较高浓度的溶液,然后溶液经过滤,脱泡,并且在88~125℃条件下用湿法或干法纺丝,接着在低温水溶或水/NMMO体系凝固成形,经拉伸,水洗,去油,干燥和溶剂回收工序,制成天丝纤维;
S5、按照组分比例称取S1、S2、S3、S4制备的铜改性纤维、铜氨纤维、原竹纤维和天丝,然后通过纺织工艺将铜改性纤维、铜氨纤维、原竹纤维和天丝纺织成无纺布,接着将纺织成的无纺布裁剪成面膜布结构。
其中,在步骤S1.1中,所述纳米白铜粒子的粒径范围为0.2mm~0.5mm,所述苯并三氮唑溶液的浓度为0.6~1.2g/L。
其中,在步骤S1.2中,所述改性纳米白铜粒子的加入量为高粘度聚酯切片的20~30wt%。
其中,在步骤S1.3中,所述分散剂为聚憐酸钢与十二烷基苯磺酸钠的混合物,所述分散剂的加入量为铜改性聚酯母粒与聚酯切片混合重量的0.4~0.8%,所述聚憐酸钢与十二烷基苯磺酸钠的重量份之比为3~5:1,所述润滑剂为硬脂酸锌,所述硬脂酸锌的加入量为铜改性聚酯母粒与聚酯切片混合重量的0.2~0.4%。
其中,在步骤S2.1中,所述铜氨纤维和改性蛋白纤维质量比为30~50:50~90。
其中,在步骤S3.3中,所述软化液由以下重量份的原料制成:甘油13~18份、烷基苯磺酸钠3~8份、山梨酸2~4份和水90~100份。
其中,在步骤S3.5中,所述蒸煮液由以下原料加水制成:氢氧化钙4g/L~8g/L、次磷酸钙1g/L~3g/L、磷酸氢钙2g/L~4g/L、硅酸钙6g/L~8g/L、磷酸氢二钙3g/L~4g/L和过氧化氢6g/L~8g/L。
与现有技术相比,本发明的有益效果是:
本发明通过科学合理的配比,通过纺织工艺将铜改性纤维、铜氨纤维、原竹纤维和天丝纺织成无纺布,接着将纺织成的无纺布裁剪成面膜布结构,制备方法简单;把具有抑菌功能纳米铜与纤维有效结合,形成一种具有抑菌功能的纤维铜改性纤维,同时按照不同的比例组合形成不同种类和抑菌功效的面膜布,该面膜布质感轻盈、手感柔软、足够贴肤、舒适透气、同时具有一定抑菌功效且性价比高的理想面膜布材料;而且该面膜布增加纳米白铜的抑菌元素,省去了面膜精华液中部分的防腐剂,使产品更加天然安全少刺激。
具体实施方式
下面将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做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1,本发明提供一种技术方案:一种具有抑菌作用的无纺布,包括以下组分:铜改性纤维35%、铜氨纤维25%、原竹纤维15%和天丝25%。
一种具有抑菌作用的无纺布的制备方法,包括以下步骤:
S1、铜改性纤维;
S1.1、纳米白铜粒子改性:通过金属研磨机将金属白铜研磨成颗粒状,制成纳米白铜粒子,然后将颗粒状的纳米白铜粒子加入到苯并三氮唑溶液中混合均匀,并浸泡30~60min,然后将浸泡后的纳米白铜粒子在80~120℃条件下干燥,得到改性纳米白铜粒子;
S1.2、制备母粒:在高粘度聚酯切片中,加入S1.1得到的改性纳米白铜粒子,然后烙融造粒得到铜改性聚酯母粒;
S1.3、制备纺丝原料:将S1.2得到的铜改性聚酯母粒与20~100倍重量份的聚酯切片混合,再加入分散剂和润滑剂搅拌混合均匀,真空状态下干燥12~20min,得到纺丝原料;
S1.4、烙融喷丝:将S1.3制备的纺丝原料加入双螺杆挤出机内,并且在烙融温度为280~300℃条件下烙融纺丝,制得铜改性纤维;
S2、铜氨纤维;
S2.1、将铜氨纤维、改性蛋白纤维混纺得到铜氨混纺坯布;
S2.2、一级水洗:将铜氨混纺坯布加入到水洗机中,加入中性清洗剂进行清洗;
S2.3、一级精练:将水洗后的铜氨混纺坯布浸泡在水中,加入中性精练剂溶液处理;
S2.4、二级水洗:将铜氨混纺坯布再次放入水洗机中,加入中性清洗剂进行清洗;
S2.5、二级精炼:将水洗后的铜氨混纺坯布再次浸泡在水中,加入中性精练剂溶液处理;
S2.6、染色:将精练后的铜氨混纺坯布放入染色机中进行染色;
S2.7、漂洗、烘干:然后使染色后的铜氨混纺坯布依次经过漂洗和烘干处理,得到铜氨纤维抗菌混纺面料;
S3、原竹纤维;
S3.1、浸泡:将竹子剖成两半或从中心穿孔,得到半圆状竹材或空心竹材,作为预处理料,将预处理料用水浸泡12h~48h后,得到浸泡后的竹材;
S3.2、帚化:将S3.1中得到的浸泡后的竹材放在帚化机中帚化3次,第1次在帚化齿间隙为5mm~8mm的条件下帚化,第2次和第3次在帚化齿间隙为3mm~4mm的条件下帚化,得到平展竹材;
S3.3、软化:在常温的条件下,将S3.2中得到的平展竹材在软化液中浸泡1h~3h后,接着平展竹材继续在在软化液中浸泡并加热至70℃,保温30min后,得到软化竹材;
S3.4、开纤处理:将S3.3中得到的软化竹材用水冲洗后梳解、开纤,得到粗竹纤维;
S3.5、将S3.4中得到的粗竹纤维浸泡在温度为100℃的蒸煮液中,蒸煮30min~80min后,得到蒸煮后的粗竹纤维;
S3.6、将S3.5中得到的蒸煮后的粗竹纤维用硫酸溶液或盐酸溶液中和清洗至pH为6~7,然后用水冲洗至脱胶完毕,将水洗后的粗竹纤维在转速为1000rpm~1500rpm的条件下离心脱水5min~10min,然后在温度为50℃的条件下干燥30min~40min,得到竹原纤维;
S4、天丝;
S4.1、先把纤维素浆粕与N-甲基吗啉N-氧化物(NMMO)均匀混合,然后加入添加剂(氯化钙)和抗氧化剂(1,2-丙二醇)以防止纤维在溶解过程中氧化分解,并调节溶液的粘性和改善纤维的性能;
S4.2、控制水分的含量小于133%,然后在85~125℃下溶解,得到较高浓度的溶液,然后溶液经过滤,脱泡,并且在88~125℃条件下用湿法或干法纺丝,接着在低温水溶或水/NMMO体系凝固成形,经拉伸,水洗,去油,干燥和溶剂回收工序,制成天丝纤维;
S5、按照组分比例称取S1、S2、S3、S4制备的铜改性纤维、铜氨纤维、原竹纤维和天丝,然后通过纺织工艺将铜改性纤维、铜氨纤维、原竹纤维和天丝纺织成无纺布,接着将纺织成的无纺布裁剪成面膜布结构。
其中,增加纳米白铜的抑菌元素,省去了面膜精华液中部分的防腐剂,使产品更加天然安全少刺激。
其中,纳米白铜的抗菌机理:带正电荷的纳米白铜粒子与带负电荷的细菌,通过电荷吸引使得纳米白铜粒子与细菌等接触,然后纳米白铜粒子进入到细菌的细胞内,使得细菌的细胞壁发生破壁,细胞液外流,造成细菌的死亡;同时进入细胞的纳米白铜粒子能与细菌细胞内的蛋白质酶等发生作用,使得酶变性失活,从而杀死细菌。
其中,在步骤S1.1中,所述纳米白铜粒子的粒径范围为0.2mm~0.5mm,所述苯并三氮唑溶液的浓度为0.6~1.2g/L。
其中,在步骤S1.2中,所述改性纳米白铜粒子的加入量为高粘度聚酯切片的20~30wt%。
其中,在步骤S1.3中,所述分散剂为聚憐酸钢与十二烷基苯磺酸钠的混合物,所述分散剂的加入量为铜改性聚酯母粒与聚酯切片混合重量的0.4~0.8%,所述聚憐酸钢与十二烷基苯磺酸钠的重量份之比为3~5:1,所述润滑剂为硬脂酸锌,所述硬脂酸锌的加入量为铜改性聚酯母粒与聚酯切片混合重量的0.2~0.4%。
其中,在步骤S2.1中,所述铜氨纤维和改性蛋白纤维质量比为30~50:50~90。
其中,在步骤S3.3中,所述软化液由以下重量份的原料制成:甘油13~18份、烷基苯磺酸钠3~8份、山梨酸2~4份和水90~100份。
其中,在步骤S3.5中,所述蒸煮液由以下原料加水制成:氢氧化钙4g/L~8g/L、次磷酸钙1g/L~3g/L、磷酸氢钙2g/L~4g/L、硅酸钙6g/L~8g/L、磷酸氢二钙3g/L~4g/L和过氧化氢6g/L~8g/L。
实施例2,本发明提供一种技术方案:一种具有抑菌作用的无纺布,包括以下组分:铜改性纤维28%、铜氨纤维33%、原竹纤维24%和天丝15%。
其中,该具有抑菌作用的无纺布的制备方法与实施例1中具有抑菌作用的无纺布的制备方法基本相同,不同之处仅在于各组分的配比不同。
实施例3,本发明提供一种技术方案:一种具有抑菌作用的无纺布,包括以下组分:铜改性纤维22%、铜氨纤维35%、原竹纤维22%和天丝21%。
其中,该具有抑菌作用的无纺布的制备方法与实施例1中具有抑菌作用的无纺布的制备方法基本相同,不同之处仅在于各组分的配比不同。
实验例,灭菌影响
(1)选取四个培养皿,四个培养皿依次标记为A组、B组、C组、D组,然后在四组培养皿内部分别添加等量的面膜液,接着将菌种(大肠杆菌、金黄色葡萄球菌、细菌、放线菌和酵母菌),每个培养皿内部的菌种浓度均为2.1×103CFU/ml,然后在二氧化碳培养箱(37℃,5%二氧化碳)中培养24h;
(2)然后选取实施例1制备的面膜布10片,并将10片面膜布放入A组培养皿中浸泡10分钟,然后将面膜布全部取出,并检测10片面膜布携带的菌种平均数;选取实施例2制备的面膜布10片,并将10片面膜布放入B组培养皿中浸泡10分钟,然后将面膜布全部取出,并检测10片面膜布携带的菌种平均数;选取实施例3制备的面膜布10片,并将10片面膜布放入C组培养皿中浸泡10分钟,然后将面膜布全部取出,并检测10片面膜布携带的菌种平均数;选取市场上常见的面膜布10片,并将10片面膜布放入D组培养皿中浸泡10分钟,然后将面膜布全部取出,并检测10片面膜布携带的菌种平均数;
(3)接着在第4h、8h、12h和16h分别检测A组、B组、C组和D组浸泡后10片面膜布携带的菌种平均数,并记录如下表所示:
由上表可以看出,在A组、B组和C组浸泡后的面膜布中菌种的数量不断减少,直至消失,因此实施例1、实施例2和实施例3制备的该面膜布具有很好的抑菌作用,而D组浸泡后的面膜布中菌种的数据不断的增加,在面膜液的滋养下,菌种不断的生长,因此现有市场上的面膜布无法起到抑菌的作用,所以本发明制备的面膜布增加纳米白铜的抑菌元素,省去了面膜精华液中部分的防腐剂,使产品更加天然安全少刺激。
综上所述,通过科学合理的配比,通过纺织工艺将铜改性纤维、铜氨纤维、原竹纤维和天丝纺织成无纺布,接着将纺织成的无纺布裁剪成面膜布结构,制备方法简单;把具有抑菌功能纳米铜与纤维有效结合,形成一种具有抑菌功能的纤维铜改性纤维,同时按照不同的比例组合形成不同种类和抑菌功效的面膜布,该面膜布质感轻盈、手感柔软、足够贴肤、舒适透气、同时具有一定抑菌功效且性价比高的理想面膜布材料;而且该面膜布增加纳米白铜的抑菌元素,省去了面膜精华液中部分的防腐剂,使产品更加天然安全少刺激。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,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 (8)
1.一种具有抑菌作用的无纺布,其特征在于,包括以下组分:铜改性纤维1-100%、铜氨纤维0-99%、原竹纤维0-99%和天丝0-99%。
2.一种具有抑菌作用的无纺布的制备方法,其特征在于,包括以下步骤:
S1、铜改性纤维;
S1.1、纳米白铜粒子改性:通过金属研磨机将金属白铜研磨成颗粒状,制成纳米白铜粒子,然后将颗粒状的纳米白铜粒子加入到苯并三氮唑溶液中混合均匀,并浸泡30~60min,然后将浸泡后的纳米白铜粒子在80~120℃条件下干燥,得到改性纳米白铜粒子;
S1.2、制备母粒:在高粘度聚酯切片中,加入S1.1得到的改性纳米白铜粒子,然后烙融造粒得到铜改性聚酯母粒;
S1.3、制备纺丝原料:将S1.2得到的铜改性聚酯母粒与20~100倍重量份的聚酯切片混合,再加入分散剂和润滑剂搅拌混合均匀,真空状态下干燥12~20min,得到纺丝原料;
S1.4、烙融喷丝:将S1.3制备的纺丝原料加入双螺杆挤出机内,并且在烙融温度为280~300℃条件下烙融纺丝,制得铜改性纤维;
S2、铜氨纤维;
S2.1、将铜氨纤维、改性蛋白纤维混纺得到铜氨混纺坯布;
S2.2、一级水洗:将铜氨混纺坯布加入到水洗机中,加入中性清洗剂进行清洗;
S2.3、一级精练:将水洗后的铜氨混纺坯布浸泡在水中,加入中性精练剂溶液处理;
S2.4、二级水洗:将铜氨混纺坯布再次放入水洗机中,加入中性清洗剂进行清洗;
S2.5、二级精炼:将水洗后的铜氨混纺坯布再次浸泡在水中,加入中性精练剂溶液处理;
S2.6、染色:将精练后的铜氨混纺坯布放入染色机中进行染色;
S2.7、漂洗、烘干:然后使染色后的铜氨混纺坯布依次经过漂洗和烘干处理,得到铜氨纤维抗菌混纺面料;
S3、原竹纤维;
S3.1、浸泡:将竹子剖成两半或从中心穿孔,得到半圆状竹材或空心竹材,作为预处理料,将预处理料用水浸泡12h~48h后,得到浸泡后的竹材;
S3.2、帚化:将S3.1中得到的浸泡后的竹材放在帚化机中帚化3次,第1次在帚化齿间隙为5mm~8mm的条件下帚化,第2次和第3次在帚化齿间隙为3mm~4mm的条件下帚化,得到平展竹材;
S3.3、软化:在常温的条件下,将S3.2中得到的平展竹材在软化液中浸泡1h~3h后,接着平展竹材继续在在软化液中浸泡并加热至70℃,保温30min后,得到软化竹材;
S3.4、开纤处理:将S3.3中得到的软化竹材用水冲洗后梳解、开纤,得到粗竹纤维;
S3.5、将S3.4中得到的粗竹纤维浸泡在温度为100℃的蒸煮液中,蒸煮30min~80min后,得到蒸煮后的粗竹纤维;
S3.6、将S3.5中得到的蒸煮后的粗竹纤维用硫酸溶液或盐酸溶液中和清洗至pH为6~7,然后用水冲洗至脱胶完毕,将水洗后的粗竹纤维在转速为1000rpm~1500rpm的条件下离心脱水5min~10min,然后在温度为50℃的条件下干燥30min~40min,得到竹原纤维;
S4、天丝;
S4.1、先把纤维素浆粕与N-甲基吗啉N-氧化物(NMMO)均匀混合,然后加入添加剂(氯化钙)和抗氧化剂(1,2-丙二醇)以防止纤维在溶解过程中氧化分解,并调节溶液的粘性和改善纤维的性能;
S4.2、控制水分的含量小于133%,然后在85~125℃下溶解,得到较高浓度的溶液,然后溶液经过滤,脱泡,并且在88~125℃条件下用湿法或干法纺丝,接着在低温水溶或水/NMMO体系凝固成形,经拉伸,水洗,去油,干燥和溶剂回收工序,制成天丝纤维;
S5、按照组分比例称取S1、S2、S3、S4制备的铜改性纤维、铜氨纤维、原竹纤维和天丝,然后通过纺织工艺将铜改性纤维、铜氨纤维、原竹纤维和天丝纺织成无纺布,接着将纺织成的无纺布裁剪成面膜布结构。
3.根据权利要求2所述的一种具有抑菌作用的无纺布的制备方法,其特征在于:在步骤S1.1中,所述纳米白铜粒子的粒径范围为0.2mm~0.5mm,所述苯并三氮唑溶液的浓度为0.6~1.2g/L。
4.根据权利要求2所述的一种具有抑菌作用的无纺布的制备方法,其特征在于:在步骤S1.2中,所述改性纳米白铜粒子的加入量为高粘度聚酯切片的20~30wt%。
5.根据权利要求2所述的一种具有抑菌作用的无纺布的制备方法,其特征在于:在步骤S1.3中,所述分散剂为聚憐酸钢与十二烷基苯磺酸钠的混合物,所述分散剂的加入量为铜改性聚酯母粒与聚酯切片混合重量的0.4~0.8%,所述聚憐酸钢与十二烷基苯磺酸钠的重量份之比为3~5:1,所述润滑剂为硬脂酸锌,所述硬脂酸锌的加入量为铜改性聚酯母粒与聚酯切片混合重量的0.2~0.4%。
6.根据权利要求2所述的一种具有抑菌作用的无纺布的制备方法,其特征在于:在步骤S2.1中,所述铜氨纤维和改性蛋白纤维质量比为30~50:50~90。
7.根据权利要求2所述的一种具有抑菌作用的无纺布的制备方法,其特征在于:在步骤S3.3中,所述软化液由以下重量份的原料制成:甘油13~18份、烷基苯磺酸钠3~8份、山梨酸2~4份和水90~100份。
8.根据权利要求2所述的一种具有抑菌作用的无纺布的制备方法,其特征在于:在步骤S3.5中,所述蒸煮液由以下原料加水制成:氢氧化钙4g/L~8g/L、次磷酸钙1g/L~3g/L、磷酸氢钙2g/L~4g/L、硅酸钙6g/L~8g/L、磷酸氢二钙3g/L~4g/L和过氧化氢6g/L~8g/L。
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