CN111114028A - 一种拒水抗菌涤纶木浆复合无纺布及其制备方法 - Google Patents

一种拒水抗菌涤纶木浆复合无纺布及其制备方法 Download PDF

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CN111114028A
CN111114028A CN201911271241.9A CN201911271241A CN111114028A CN 111114028 A CN111114028 A CN 111114028A CN 201911271241 A CN201911271241 A CN 201911271241A CN 111114028 A CN111114028 A CN 111114028A
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woven fabric
wood pulp
water
repellent
composite non
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孙利忠
于斌
郭玉海
朱斐超
秦扶桑
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Hangzhou Eslite Industrial Co ltd
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Abstract

本发明公开了一种拒水抗菌涤纶木浆复合无纺布及其制备方法，一种拒水抗菌涤纶木浆复合无纺布包括由涤纶无纺布层和木浆无纺布层复合而成的复合无纺布，所述复合无纺布的涤纶无纺布层外表面采用氟硅改性丙烯酸酯拒水剂进行表面涂层处理从而形成拒水涂层，所述复合无纺布的木浆无纺布层外表面采用络合纳米银液态抗菌剂进行表面涂层处理从而形成抗菌涂层，一种拒水抗菌涤纶木浆复合无纺布的制备方法包括a)无纺布的复合、b)表面涂层处理和c)后处理，所制备的复合无纺布在保证强度和耐久度的前提下，不仅具有很好的抗菌性，而且具有良好拒水性。

Description

一种拒水抗菌涤纶木浆复合无纺布及其制备方法
【技术领域】
本发明涉及无纺布的技术领域，特别是一种拒水抗菌涤纶木浆复合无纺布及其制备方法的技术领域。
【背景技术】
无纺布(英文名：Non Woven Fabric或者Nonwoven cloth)又称非织造布，由定向的或随机的纤维而构成，因具有布的外观和某些性能而称其为布。近年来，随着社会经济的快速发展，人们对于非织造材料的需求和性能要求越来越高，非织造材料产业的发展也是日新月异。医疗卫生领域的应用是非织造材料研究的重要领域之一。一直以来，各种疾病损害人们的健康，而医护人员是接触病人最多最直接的人，也是最容易被病毒感人的人群。因此，人们对具有优异性能的医疗防护服材料的需求越来越迫切，要求医疗防护服材料做到在具备拒液性能的同时，可有效防止病菌的交叉感染。
【发明内容】
本发明的目的就是解决现有技术中的问题，提出一种拒水抗菌涤纶木浆复合无纺布及其制备方法，所制备的复合无纺布在保证强度和耐久度的前提下，不仅具有很好的抗菌性，而且具有良好拒水性。
为实现上述目的，本发明通过以下技术方案来实现：
一种拒水抗菌涤纶木浆复合无纺布，包括由涤纶无纺布层和木浆无纺布层复合而成的复合无纺布，所述复合无纺布的涤纶无纺布层外表面采用氟硅改性丙烯酸酯拒水剂进行表面涂层处理从而形成拒水涂层，所述复合无纺布的木浆无纺布层外表面采用络合纳米银液态抗菌剂进行表面涂层处理从而形成抗菌涂层。
作为优选，所述涤纶无纺布层为涤纶纺粘无纺布。
作为优选，所述木浆无纺布层为湿法水刺木浆无纺布。
一种拒水抗菌涤纶木浆复合无纺布的制备方法，包括如下步骤：
a)无纺布的复合：将涤纶无纺布层和木浆无纺布层复合形成复合无纺布；
b)表面涂层处理：采用氟硅改性丙烯酸酯拒水剂在步骤a)中所得的复合无纺布的涤纶无纺布层外表面进行表面涂层处理从而形成拒水涂层，再采用络合纳米银液态抗菌剂在复合无纺布的木浆无纺布层外表面进行表面涂层处理从而形成抗菌涂层；
c)后处理：将步骤b)中两面都经过表面涂层处理后的复合无纺布热轧粘合后，再分切、包装，得到成品。
作为优选，所述步骤a)中，涤纶无纺布层和木浆无纺布层通过水刺技术加固缠结形成复合无纺布。
作为优选，所述步骤b)中，氟硅改性丙烯酸酯拒水剂采用乳液聚合方法制备而成，所述氟硅改性丙烯酸酯拒水剂包括重量比例为8～12％的基本单体、10～14％的改性单体、2～3％的乳化剂、0.5～1.5％的交联剂和0.5～1.5％的引发剂，剩余为水，所述基本单体为甲基丙烯酸甲酯和丙烯酸丁酯，所述甲基丙烯酸甲酯和丙烯酸丁酯的重量比例为3：1～3：3，所述改性单体为甲基丙烯酸十二氟庚酯和γ-甲基丙烯酰氧基三甲氧基硅烷，所述甲基丙烯酸十二氟庚酯和γ-甲基丙烯酰氧基三甲氧基硅烷的重量比例为3：1～3：3。
作为优选，所述乳化剂为十二烷基苯磺酸钠、烷基酚聚氧乙烯醚和氟表面活性剂其中的一种或几种的组合，所述引发剂为过硫酸钾，所述交联剂为丙烯酸羟乙酯。
作为优选，所述乳液聚合的聚合温度为70～80℃，聚合时间为0.5～1.5h，保温温度为75～85℃，保温时间为0.5～1.5h。
作为优选，所述步骤b)中，氟硅改性丙烯酸酯拒水剂的添加量为0.5～4g/cm2，络合纳米银液态抗菌剂的处理浓度为50～400mg/kg。
作为优选，所述步骤c)中，热轧粘合的热轧辊温度为120～180℃。
本发明的有益效果：本发明通过将涤纶无纺布层和木浆无纺布层水刺复合，并利用拒水剂和抗菌剂分别在涤纶无纺布层和木浆无纺布层的外表面进行表面涂层处理，使最终得到的复合无纺布在保证强度和耐久度的前提下，不仅具有很好的抗菌性，而且具有良好拒水性，可满足人们对医疗防护服材料耐久、抗菌、拒水和阻隔的要求。
【具体实施方式】
实施例一、复合无纺布的制备：
首先，将涤纶纺粘无纺布层和湿法水刺木浆无纺布层通过水刺技术加固缠结形成复合无纺布。接着，先采用乙醇对复合无纺布进行若干次预清洗，待乙醇挥发后，再采用氟硅改性丙烯酸酯拒水剂，以添加量为0.5g/cm2、1g/cm2、2g/cm2和4g/cm2在复合无纺布的涤纶纺粘无纺布层外表面分别进行表面涂层处理从而形成拒水涂层，然后再采用络合纳米银液态抗菌剂，以处理浓度为50mg/kg、100mg/kg、200mg/kg和400mg/kg在复合无纺布的湿法水刺木浆无纺布层外表面分别进行表面涂层处理从而形成抗菌涂层。最后，将两面都经过表面涂层处理后的复合无纺布经过150℃热轧辊进行热轧粘合后，再分切、包装，得到成品。
其中，氟硅改性丙烯酸酯采用乳液聚合方式聚合，聚合条件聚合温度为75℃，聚合时间为1h，保温温度为80℃，保温时间为1h，原料组分如下表1：
Figure BDA0002314241540000031
Figure BDA0002314241540000041
表1氟硅改性丙烯酸酯的原料组分
实施例二、拒水剂量对复合无纺布表面水接触角的影响测试：
将实施例一中经添加量为0.5g/cm2、1g/cm2、2g/cm2和4g/cm2的氟硅改性丙烯酸酯拒水剂分别处理后的复合无纺布裁剪成10cm×10cm的块状，再测试表面水解触角，结果如下表2：
拒水剂添加量(g/cm<sup>2</sup>) 水接触角(°)
0.5 123
1 139
2 142
4 140
表2经不同添加量的拒水剂处理后的复合无纺布的水接触角
经不同添加量的拒水剂处理后的复合无纺布的水接触角均大于90°，具有明显的拒水性能。
实施例三：
将实施例一中经处理浓度为50mg/kg、100mg/kg、200mg/kg和400mg/kg的络合纳米银液态抗菌剂分别处理后的复合无纺布裁剪成10cm×10cm的块状，再按标准JISL 1902—2002进行抗菌测试，结果如下表3：
抗菌剂浓度(mg/kg) 抑菌率(％)
50 82.1
100 98.3
200 99.5
400 99.9
表3经不同处理浓度的抗菌剂处理后的复合无纺布的抑菌率
经不同处理浓度的抗菌剂处理后的复合无纺布的抑菌率均大于80％，且随着处理浓度的增大而逐渐增大，由此可见经抗菌剂处理后的复合无纺布具有良好的抗菌效果。
本发明通过将涤纶无纺布层和木浆无纺布层水刺复合，并利用拒水剂和抗菌剂分别在涤纶无纺布层和木浆无纺布层的外表面进行表面涂层处理，使最终得到的复合无纺布在保证强度和耐久度的前提下，不仅具有很好的抗菌性，而且具有良好拒水性，可满足人们对医疗防护服材料耐久、抗菌、拒水和阻隔的要求。
上述实施例是对本发明的说明，不是对本发明的限定，任何对本发明简单变换后的方案均属于本发明的保护范围。

Claims (10)

1.一种拒水抗菌涤纶木浆复合无纺布，其特征在于：包括由涤纶无纺布层和木浆无纺布层复合而成的复合无纺布，所述复合无纺布的涤纶无纺布层外表面采用氟硅改性丙烯酸酯拒水剂进行表面涂层处理从而形成拒水涂层，所述复合无纺布的木浆无纺布层外表面采用络合纳米银液态抗菌剂进行表面涂层处理从而形成抗菌涂层。
2.如权利要求1所述的一种拒水抗菌涤纶木浆复合无纺布，其特征在于：所述涤纶无纺布层为涤纶纺粘无纺布。
3.如权利要求1所述的一种拒水抗菌涤纶木浆复合无纺布，其特征在于：所述木浆无纺布层为湿法水刺木浆无纺布。
4.一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于包括如下步骤：
a)无纺布的复合：将涤纶无纺布层和木浆无纺布层复合形成复合无纺布；
b)表面涂层处理：采用氟硅改性丙烯酸酯拒水剂在步骤a)中所得的复合无纺布的涤纶无纺布层外表面进行表面涂层处理从而形成拒水涂层，再采用络合纳米银液态抗菌剂在复合无纺布的木浆无纺布层外表面进行表面涂层处理从而形成抗菌涂层；
c)后处理：将步骤b)中两面都经过表面涂层处理后的复合无纺布热轧粘合后，再分切、包装，得到成品。
5.如权利要求4所述的一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于：所述步骤a)中，涤纶无纺布层和木浆无纺布层通过水刺技术加固缠结形成复合无纺布。
6.如权利要求4所述的一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于：所述步骤b)中，氟硅改性丙烯酸酯拒水剂采用乳液聚合方法制备而成，所述氟硅改性丙烯酸酯拒水剂包括重量比例为8～12％的基本单体、10～14％的改性单体、2～3％的乳化剂、0.5～1.5％的交联剂和0.5～1.5％的引发剂，剩余为水，所述基本单体为甲基丙烯酸甲酯和丙烯酸丁酯，所述甲基丙烯酸甲酯和丙烯酸丁酯的重量比例为3：1～3：3，所述改性单体为甲基丙烯酸十二氟庚酯和γ-甲基丙烯酰氧基三甲氧基硅烷，所述甲基丙烯酸十二氟庚酯和γ-甲基丙烯酰氧基三甲氧基硅烷的重量比例为3：1～3：3。
7.如权利要求6所述的一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于：所述乳化剂为十二烷基苯磺酸钠、烷基酚聚氧乙烯醚和氟表面活性剂其中的一种或几种的组合，所述引发剂为过硫酸钾，所述交联剂为丙烯酸羟乙酯。
8.如权利要求6所述的一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于：所述乳液聚合的聚合温度为70～80℃，聚合时间为0.5～1.5h，保温温度为75～85℃，保温时间为0.5～1.5h。
9.如权利要求4所述的一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于：所述步骤b)中，氟硅改性丙烯酸酯拒水剂的添加量为0.5～4g/cm2，络合纳米银液态抗菌剂的处理浓度为50～400mg/kg。
10.如权利要求4所述的一种拒水抗菌涤纶木浆复合无纺布的制备方法，其特征在于：所述步骤c)中，热轧粘合的热轧辊温度为120～180℃。
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