CN112549716A - 一种弹性抗静电无纺布及其制备方法 - Google Patents
一种弹性抗静电无纺布及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种弹性抗静电无纺布,具体涉及无纺布技术领域,包括无纺布基层、抗静电层和弹性层,所述无纺布基层包括以下重量份的原料:聚烯烃、改性料和抗氧化剂;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯、聚醚型聚氨酯弹性体、端羟基聚硅氧烷乳液、端羟基聚硅氧烷乳液、六亚甲基二异氰酸酯、分散剂和导电填料;所述弹性层包括以下重量份的原料:聚烯烃弹性体、爽滑剂和抗静电剂。本发明利用改性材料对聚烯烃进行改性,能够有效提高无纺布基层的抗拉伸强度、热变形温度高和弹性好等优点,而抗静电层采用复合材料制作而成,并填充有导电填料,使得抗静电层具有较低的表面电阻,抗静电效果较好。
Description
技术领域
本发明涉及无纺布技术领域,更具体地说,本发明涉及一种弹性抗静电无纺布及其制备方法。
背景技术
随着社会的发展和技术的进步,非织造布也在逐步在替代传统材料拓展新的应用领域,由于非织造布透气性好,对皮肤安全无刺激性,广泛用于一次性医疗产品和卫生用品领域。无纺布是一种非织造布,它是直接利用高聚物切片、短纤维或长丝将纤维通过气流或机械成网,然后经过水刺,针刺,或热轧加固,最后经过后整理形成的无编织的布料。具有柔软、透气和平面结构的新型纤维制品,优点是不产生纤维屑,强韧、耐用、丝般柔软,也是增强材料的一种,具有防潮、透气、柔韧、质轻、不助燃、容易分解、无毒无刺激性、色彩丰富、价格低廉、可循环再用等特点。
无纺布根据成分有涤纶、丙纶、锦纶、氨纶、腈纶等,表面比电阻高、吸水率低,在相互之间接触或者与其他物体摩擦接触时,极易产生静电,不方便人们的使用,而且传统的无纺布弹性较差,伸长率低,限制了无纺布材料的应用。
发明内容
为了克服现有技术的上述缺陷,本发明的实施例提供一种弹性抗静电无纺布及其制备方法,本发明所要解决的问题是:如何提高无纺布的弹性和抗静电能力。
为实现上述目的,本发明提供如下技术方案:一种弹性抗静电无纺布,包括无纺布基层、抗静电层和弹性层,所述无纺布基层的外侧依次设置有抗静电层和弹性层,所述无纺布基层包括以下重量份的原料:聚烯烃75-85份、改性料8-12份和抗氧化剂0.5-1份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯40-50份、聚醚型聚氨酯弹性体35-40份、端羟基聚硅氧烷乳液1-1.5份、端羟基聚硅氧烷乳液1-2份、六亚甲基二异氰酸酯2-4份、分散剂2-4份和导电填料3-5份;所述弹性层包括以下重量份的原料:聚烯烃弹性体50-60份、爽滑剂1-2份和抗静电剂2-4份。
在一个优选的实施方式中,所述无纺布基层包括以下重量份的原料:聚烯烃78-82份、改性料9-11份和抗氧化剂0.7-0.8份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯43-47份、聚醚型聚氨酯弹性体37-38份、端羟基聚硅氧烷乳液1.2-1.3份、端羟基聚硅氧烷乳液1.3-1.7份、六亚甲基二异氰酸酯2.5-3.5份、分散剂2.3-3.5份和导电填料3.6-4.4份;所述弹性层包括以下重量份的原料:聚烯烃弹性体53-57份、爽滑剂1.3-1.7份和抗静电剂2.5-3.5份。
在一个优选的实施方式中,所述无纺布基层包括以下重量份的原料:聚烯烃80份、改性料10份和抗氧化剂0.75份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯45份、聚醚型聚氨酯弹性体37.5份、端羟基聚硅氧烷乳液1.25份、端羟基聚硅氧烷乳液1.5份、六亚甲基二异氰酸酯3份、分散剂3份和导电填料4份;所述弹性层包括以下重量份的原料:聚烯烃弹性体55份、爽滑剂1.5份和抗静电剂3份。
在一个优选的实施方式中,所述聚烯烃为聚乙烯、聚丙烯或聚丁烯中的一种或多种,所述改性料为三元乙丙橡胶、聚烯烃弹性体、乙烯-乙酸乙烯共聚物、氯化聚乙烯、苯乙烯系热塑性弹性体、热塑性聚氨酯弹性体、聚丁二烯-1、丁苯胶、聚异丁烯和顺丁胶中的一种或多种。
在一个优选的实施方式中,所述弹性层中抗静电剂包括有碳黑、树脂、溶剂、流平剂、润湿剂、分散剂和增稠剂。
本发明还提供一种弹性抗静电无纺布的制备方法,具体制备步骤如下:
步骤一:无纺布基层的制备:
称取一定量的聚烯烃和改性料进行切片粉碎,并将切片粉碎后的聚烯烃和改性料混合均匀,加入抗氧化剂混合均匀后送入螺杆挤出机中,经加热熔融、螺杆挤压、过滤网过滤、计量泵计量后进入纺丝箱体,经喷丝孔喷出长丝,长丝丝束经过气流冷却牵伸,牵伸后的丝条均匀铺放在成网机上,经过预压辊进入热轧机进行热轧,热轧后的纤网进入冷却辊进行冷却后得到无纺布基层;
步骤二:抗静电层的制备:
按照上述重量份称取聚对苯二甲酸乙二醇酯、聚醚型聚氨酯弹性体、端羟基聚硅氧烷乳液、端羟基聚硅氧烷乳液、六亚甲基二异氰酸酯、分散剂和导电填料,混合均匀后送入双螺杆挤出机中熔融成混合熔体,将混合熔体导入到复合纺丝机,利用复合纺丝机喷出丝条,经过气流冷却、拉伸、卷绕,得到抗静电层;
步骤三:弹性层的制备:
抗静电层制备时将碳黑、树脂、溶剂和水混合,加入流平剂、润湿剂、分散剂和增稠剂充分调均,调配成有机防静电液,然后将有机防静电液和爽滑剂混合均匀后涂布在聚烯烃弹性体上得到弹性层。
步骤四:将步骤一中得到的无纺布基层作为中间层,利用胶粘层将抗静电层粘附在无纺布基层上,然后再利用胶粘层将弹性层粘附在抗静电层外侧,得到弹性抗静电无纺布。
在一个优选的实施方式中,所述步骤一和步骤二中气流冷却时冷却风的温度为15-26℃,所述步骤一中预压辊的温度为130-150℃。
在一个优选的实施方式中,所述步骤三中抗静电剂中各组分的含量为碳黑20wt%-40wt%、树脂15wt%-35wt%、溶剂15wt%-25wt%、流平剂0.2wt%-1.5wt%、润湿剂0.1wt%-1wt%、分散剂0.1wt%-2wt%和增稠剂0.1wt%-2wt%。
在一个优选的实施方式中,所述步骤三中爽滑剂为芥酸酰胺或油酸酰胺。
在一个优选的实施方式中,所述步骤四中胶粘层采用热塑性弹性体、增粘树脂和软化剂制作而成,所述步骤四中利用胶粘层粘附时采用热压粘合。
本发明的技术效果和优点:
1、采用本发明的原料配方所制备出的弹性抗静电无纺布,通过设置有无纺布基层、抗静电层和弹性层,无纺布基层采用聚烯烃、改性料和抗氧化剂组成,利用改性材料对聚烯烃进行改性,能够有效提高无纺布基层的抗拉伸强度、热变形温度高和弹性好等优点,而抗静电层采用复合材料制作而成,并填充有导电填料,使得抗静电层具有较低的表面电阻,抗静电效果较好,而弹性层采用聚烯烃弹性体为基材,并喷涂有爽滑剂和抗静电剂,使得无纺布具有较高的弹性,而且手感柔滑,具有贴切的手感;
2、本发明改性材料选用三元乙丙橡胶、乙烯-乙酸乙烯共聚物、氯化聚乙烯、苯乙烯系热塑性弹性体、热塑性聚氨酯弹性体、聚丁二烯-1、丁苯胶、聚异丁烯和顺丁胶中的一种或多种,利用改性材料与聚烯烃具有良好的亲和性,能够有效提高无纺布基层的力学性能,而且无纺布基层和抗静电层通过螺杆挤出机中加热熔融挤出,并经过气流冷却、热轧后利用冷却辊冷却后得到无纺布基层和抗静电层,利用热压粘合将无纺布基层、抗静电层和弹性层压合成弹性抗静电性无纺布,无纺布的制备工艺简单。
具体实施方式
下面将结合本发明中的实施例,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:
本发明提供了一种弹性抗静电无纺布,包括无纺布基层、抗静电层和弹性层,所述无纺布基层的外侧依次设置有抗静电层和弹性层,所述无纺布基层包括以下重量份的原料:聚烯烃75份、改性料8份和抗氧化剂0.5份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯40份、聚醚型聚氨酯弹性体35份、端羟基聚硅氧烷乳液1份、端羟基聚硅氧烷乳液1份、六亚甲基二异氰酸酯2份、分散剂2份和导电填料3份;所述弹性层包括以下重量份的原料:聚烯烃弹性体50份、爽滑剂1份和抗静电剂2份。
在一个优选的实施方式中,所述聚烯烃为聚乙烯、聚丙烯或聚丁烯中的一种或多种,所述改性料为三元乙丙橡胶。
在一个优选的实施方式中,所述弹性层中抗静电剂包括有碳黑、树脂、溶剂、流平剂、润湿剂、分散剂和增稠剂。
本发明还提供一种弹性抗静电无纺布的制备方法,具体制备步骤如下:
步骤一:无纺布基层的制备:
称取一定量的聚烯烃和改性料进行切片粉碎,并将切片粉碎后的聚烯烃和改性料混合均匀,加入抗氧化剂混合均匀后送入螺杆挤出机中,经加热熔融、螺杆挤压、过滤网过滤、计量泵计量后进入纺丝箱体,经喷丝孔喷出长丝,长丝丝束经过气流冷却牵伸,牵伸后的丝条均匀铺放在成网机上,经过预压辊进入热轧机进行热轧,热轧后的纤网进入冷却辊进行冷却后得到无纺布基层;
步骤二:抗静电层的制备:
按照上述重量份称取聚对苯二甲酸乙二醇酯、聚醚型聚氨酯弹性体、端羟基聚硅氧烷乳液、端羟基聚硅氧烷乳液、六亚甲基二异氰酸酯、分散剂和导电填料,混合均匀后送入双螺杆挤出机中熔融成混合熔体,将混合熔体导入到复合纺丝机,利用复合纺丝机喷出丝条,经过气流冷却、拉伸、卷绕,得到抗静电层;
步骤三:弹性层的制备:
抗静电层制备时将碳黑、树脂、溶剂和水混合,加入流平剂、润湿剂、分散剂和增稠剂充分调均,调配成有机防静电液,然后将有机防静电液和爽滑剂混合均匀后涂布在聚烯烃弹性体上得到弹性层。
步骤四:将步骤一中得到的无纺布基层作为中间层,利用胶粘层将抗静电层粘附在无纺布基层上,然后再利用胶粘层将弹性层粘附在抗静电层外侧,得到弹性抗静电无纺布。
在一个优选的实施方式中,所述步骤一和步骤二中气流冷却时冷却风的温度为20℃,所述步骤一中预压辊的温度为140℃。
在一个优选的实施方式中,所述步骤三中抗静电剂中各组分的含量为碳黑30wt%、树脂27wt%、溶剂20wt%、流平剂0.8wt%、润湿剂0.5wt%、分散剂0.6wt%和增稠剂1wt%。
在一个优选的实施方式中,所述步骤三中爽滑剂为芥酸酰胺或油酸酰胺。
在一个优选的实施方式中,所述步骤四中胶粘层采用热塑性弹性体、增粘树脂和软化剂制作而成,所述步骤四中利用胶粘层粘附时采用热压粘合。
实施例2:
与实施例1不同的是,所述无纺布基层包括以下重量份的原料:聚烯烃80份、改性料10份和抗氧化剂0.75份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯45份、聚醚型聚氨酯弹性体37.5份、端羟基聚硅氧烷乳液1.25份、端羟基聚硅氧烷乳液1.5份、六亚甲基二异氰酸酯3份、分散剂3份和导电填料4份;所述弹性层包括以下重量份的原料:聚烯烃弹性体55份、爽滑剂1.5份和抗静电剂3份。
实施例3:
与实施例1-2均不同的是,所述无纺布基层包括以下重量份的原料:聚烯烃85份、改性料12份和抗氧化剂1份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯50份、聚醚型聚氨酯弹性体40份、端羟基聚硅氧烷乳液1.5份、端羟基聚硅氧烷乳液2份、六亚甲基二异氰酸酯4份、分散剂4份和导电填料5份;所述弹性层包括以下重量份的原料:聚烯烃弹性体60份、爽滑剂2份和抗静电剂4份。
分别取上述实施例1-3所制得的弹性抗静电无纺布作为实验组1、实验组2和实验组3,采用常规的无纺布作为空白对照组进行测试,分别测试实验组1、实验组2、实验组3和对照组中无纺布的表面电阻、摩擦电压和伸长率进行测量,测量结果如表一:
表面电阻/Ω | 摩擦电压/V | 纵向伸长率/% | 横向伸长率/% | |
实验组1 | 7.8×10<sup>7</sup> | 1.9 | 298 | 283 |
实验组2 | 5.6×10<sup>7</sup> | 1.2 | 346 | 321 |
实验组3 | 6.9×10<sup>7</sup> | 1.5 | 322 | 306 |
对照组 | 9.2×10<sup>9</sup> | 10.2 | 235 | 212 |
表一
由表一可知,本发明生产的弹性抗静电无纺布相比较常规的无纺布,无纺布表面电阻较低,摩擦电压较低,具有良好的导电性能,从而使得无纺布的抗静电效果较好,而且本发明生产的纵向伸长率和横向伸长率均高于常规无纺布的伸长率,具有较高的弹性,本发明利用改性材料对聚烯烃进行改性,能够有效提高无纺布基层的抗拉伸强度、热变形温度高和弹性好等优点,而抗静电层采用复合材料制作而成,并填充有导电填料,使得抗静电层具有较低的表面电阻,抗静电效果较好,而弹性层采用聚烯烃弹性体为基材,并喷涂有爽滑剂和抗静电剂,使得无纺布具有较高的弹性,而且手感柔滑,具有贴切的手感。
实施例4
在上述优选的技术方案中,本发明提供了一种弹性抗静电无纺布,包括无纺布基层、抗静电层和弹性层,所述无纺布基层的外侧依次设置有抗静电层和弹性层,所述无纺布基层包括以下重量份的原料:聚烯烃80份、改性料10份和抗氧化剂0.75份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯45份、聚醚型聚氨酯弹性体37.5份、端羟基聚硅氧烷乳液1.25份、端羟基聚硅氧烷乳液1.5份、六亚甲基二异氰酸酯3份、分散剂3份和导电填料4份;所述弹性层包括以下重量份的原料:聚烯烃弹性体55份、爽滑剂1.5份和抗静电剂3份。
在一个优选的实施方式中,所述聚烯烃为聚乙烯、聚丙烯或聚丁烯中的一种或多种,所述改性料为乙烯-乙酸乙烯共聚物。
在一个优选的实施方式中,所述弹性层中抗静电剂包括有碳黑、树脂、溶剂、流平剂、润湿剂、分散剂和增稠剂。
本发明还提供一种弹性抗静电无纺布的制备方法,具体制备步骤如下:
步骤一:无纺布基层的制备:
称取一定量的聚烯烃和改性料进行切片粉碎,并将切片粉碎后的聚烯烃和改性料混合均匀,加入抗氧化剂混合均匀后送入螺杆挤出机中,经加热熔融、螺杆挤压、过滤网过滤、计量泵计量后进入纺丝箱体,经喷丝孔喷出长丝,长丝丝束经过气流冷却牵伸,牵伸后的丝条均匀铺放在成网机上,经过预压辊进入热轧机进行热轧,热轧后的纤网进入冷却辊进行冷却后得到无纺布基层;
步骤二:抗静电层的制备:
按照上述重量份称取聚对苯二甲酸乙二醇酯、聚醚型聚氨酯弹性体、端羟基聚硅氧烷乳液、端羟基聚硅氧烷乳液、六亚甲基二异氰酸酯、分散剂和导电填料,混合均匀后送入双螺杆挤出机中熔融成混合熔体,将混合熔体导入到复合纺丝机,利用复合纺丝机喷出丝条,经过气流冷却、拉伸、卷绕,得到抗静电层;
步骤三:弹性层的制备:
抗静电层制备时将碳黑、树脂、溶剂和水混合,加入流平剂、润湿剂、分散剂和增稠剂充分调均,调配成有机防静电液,然后将有机防静电液和爽滑剂混合均匀后涂布在聚烯烃弹性体上得到弹性层。
步骤四:将步骤一中得到的无纺布基层作为中间层,利用胶粘层将抗静电层粘附在无纺布基层上,然后再利用胶粘层将弹性层粘附在抗静电层外侧,得到弹性抗静电无纺布。
在一个优选的实施方式中,所述步骤一和步骤二中气流冷却时冷却风的温度为20℃,所述步骤一中预压辊的温度为140℃。
在一个优选的实施方式中,所述步骤三中抗静电剂中各组分的含量为碳黑30wt%、树脂27wt%、溶剂20wt%、流平剂0.8wt%、润湿剂0.5wt%、分散剂0.6wt%和增稠剂1wt%。
在一个优选的实施方式中,所述步骤三中爽滑剂为芥酸酰胺或油酸酰胺。
在一个优选的实施方式中,所述步骤四中胶粘层采用热塑性弹性体、增粘树脂和软化剂制作而成,所述步骤四中利用胶粘层粘附时采用热压粘合。
实施例5
与实施例4不同的是,所述改性料为氯化聚乙烯。
实施例6
与实施例4不同的是,所述改性料为苯乙烯系热塑性弹性体。
实施例7
与实施例4不同的是,所述改性料为热塑性聚氨酯弹性体。
实施例8
与实施例4不同的是,所述改性料为聚丁二烯-1。
实施例9
与实施例4不同的是,所述改性料为丁苯胶。
实施例10
与实施例4不同的是,所述改性料为聚异丁烯。
实施例11
与实施例4不同的是,所述改性料为顺丁胶。
实施例12
与实施例4不同的是,所述改性料为聚烯烃弹性体。
分别取上述实施例2、实施例4、实施例5、实施例6、实施例7、实施例8、实施例9、实施例10和实施例11所生产的弹性抗静电无纺布,分别测量无纺布的表面电阻、摩擦电压和伸长率进行测量,测量结果如表二:
表面电阻/Ω | 摩擦电压/V | 纵向伸长率/% | 横向伸长率/% | |
实施例2 | 5.6×10<sup>7</sup> | 1.2 | 346 | 321 |
实施例4 | 4.3×10<sup>7</sup> | 1.0 | 356 | 338 |
实施例5 | 9.8×10<sup>7</sup> | 1.6 | 327 | 311 |
实施例6 | 1.2×10<sup>8</sup> | 1.9 | 311 | 306 |
实施例7 | 6.8×10<sup>7</sup> | 1.1 | 342 | 319 |
实施例8 | 8.6×10<sup>7</sup> | 1.4 | 336 | 316 |
实施例9 | 8.8×10<sup>7</sup> | 1.3 | 332 | 314 |
实施例10 | 7.9×10<sup>7</sup> | 1.4 | 335 | 316 |
实施例11 | 1.4×10<sup>8</sup> | 2.1 | 312 | 302 |
实施例12 | 3.2×10<sup>7</sup> | 0.9 | 365 | 348 |
表二
由上表可知,改性材料采用聚烯烃弹性体作为改性剂与聚烯烃材料进行混合生产的无纺布基层具有的弹性和抗静电能力优于其它改性剂,对无纺布的弹性和抗静电效果更好。
最后:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种弹性抗静电无纺布,包括无纺布基层、抗静电层和弹性层,其特征在于:所述无纺布基层的外侧依次设置有抗静电层和弹性层,所述无纺布基层包括以下重量份的原料:聚烯烃75-85份、改性料8-12份和抗氧化剂0.5-1份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯40-50份、聚醚型聚氨酯弹性体35-40份、端羟基聚硅氧烷乳液1-1.5份、端羟基聚硅氧烷乳液1-2份、六亚甲基二异氰酸酯2-4份、分散剂2-4份和导电填料3-5份;所述弹性层包括以下重量份的原料:聚烯烃弹性体50-60份、爽滑剂1-2份和抗静电剂2-4份。
2.根据权利要求1所述的一种弹性抗静电无纺布,其特征在于:所述无纺布基层包括以下重量份的原料:聚烯烃78-82份、改性料9-11份和抗氧化剂0.7-0.8份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯43-47份、聚醚型聚氨酯弹性体37-38份、端羟基聚硅氧烷乳液1.2-1.3份、端羟基聚硅氧烷乳液1.3-1.7份、六亚甲基二异氰酸酯2.5-3.5份、分散剂2.3-3.5份和导电填料3.6-4.4份;所述弹性层包括以下重量份的原料:聚烯烃弹性体53-57份、爽滑剂1.3-1.7份和抗静电剂2.5-3.5份。
3.根据权利要求1所述的一种弹性抗静电无纺布,其特征在于:所述无纺布基层包括以下重量份的原料:聚烯烃80份、改性料10份和抗氧化剂0.75份;所述抗静电层包括以下重量份的原料:聚对苯二甲酸乙二醇酯45份、聚醚型聚氨酯弹性体37.5份、端羟基聚硅氧烷乳液1.25份、端羟基聚硅氧烷乳液1.5份、六亚甲基二异氰酸酯3份、分散剂3份和导电填料4份;所述弹性层包括以下重量份的原料:聚烯烃弹性体55份、爽滑剂1.5份和抗静电剂3份。
4.根据权利要求1所述的一种弹性抗静电无纺布,其特征在于:所述聚烯烃为聚乙烯、聚丙烯或聚丁烯中的一种或多种,所述改性料为三元乙丙橡胶、聚烯烃弹性体、乙烯-乙酸乙烯共聚物、氯化聚乙烯、苯乙烯系热塑性弹性体、热塑性聚氨酯弹性体、聚丁二烯-1、丁苯胶、聚异丁烯和顺丁胶中的一种或多种。
5.根据权利要求1所述的一种弹性抗静电无纺布,其特征在于:所述弹性层中抗静电剂包括有碳黑、树脂、溶剂、流平剂、润湿剂、分散剂和增稠剂。
6.根据权利要求1-5任意一项所述的一种弹性抗静电无纺布的制备方法,其特征在于:具体制备步骤如下:
步骤一:无纺布基层的制备:
称取一定量的聚烯烃和改性料进行切片粉碎,并将切片粉碎后的聚烯烃和改性料混合均匀,加入抗氧化剂混合均匀后送入螺杆挤出机中,经加热熔融、螺杆挤压、过滤网过滤、计量泵计量后进入纺丝箱体,经喷丝孔喷出长丝,长丝丝束经过气流冷却牵伸,牵伸后的丝条均匀铺放在成网机上,经过预压辊进入热轧机进行热轧,热轧后的纤网进入冷却辊进行冷却后得到无纺布基层;
步骤二:抗静电层的制备:
按照上述重量份称取聚对苯二甲酸乙二醇酯、聚醚型聚氨酯弹性体、端羟基聚硅氧烷乳液、端羟基聚硅氧烷乳液、六亚甲基二异氰酸酯、分散剂和导电填料,混合均匀后送入双螺杆挤出机中熔融成混合熔体,将混合熔体导入到复合纺丝机,利用复合纺丝机喷出丝条,经过气流冷却、拉伸、卷绕,得到抗静电层;
步骤三:弹性层的制备:
抗静电层制备时将碳黑、树脂、溶剂和水混合,加入流平剂、润湿剂、分散剂和增稠剂充分调均,调配成有机防静电液,然后将有机防静电液和爽滑剂混合均匀后涂布在聚烯烃弹性体上得到弹性层。
步骤四:将步骤一中得到的无纺布基层作为中间层,利用胶粘层将抗静电层粘附在无纺布基层上,然后再利用胶粘层将弹性层粘附在抗静电层外侧,得到弹性抗静电无纺布。
7.根据权利要求6所述的一种弹性抗静电无纺布的制备方法,其特征在于:所述步骤一和步骤二中气流冷却时冷却风的温度为15-26℃,所述步骤一中预压辊的温度为130-150℃。
8.根据权利要求6所述的一种弹性抗静电无纺布的制备方法,其特征在于:所述步骤三中抗静电剂中各组分的含量为碳黑20wt%-40wt%、树脂15wt%-35wt%、溶剂15wt%-25wt%、流平剂0.2wt%-1.5wt%、润湿剂0.1wt%-1wt%、分散剂0.1wt%-2wt%和增稠剂0.1wt%-2wt%。
9.根据权利要求6所述的一种弹性抗静电无纺布的制备方法,其特征在于:所述步骤三中爽滑剂为芥酸酰胺或油酸酰胺。
10.根据权利要求6所述的一种弹性抗静电无纺布的制备方法,其特征在于:所述步骤四中胶粘层采用热塑性弹性体、增粘树脂和软化剂制作而成,所述步骤四中利用胶粘层粘附时采用热压粘合。
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