共查询到18条相似文献,搜索用时 78 毫秒
1.
2.
《合成纤维工业》2015,(6):18-21
采用环氧型交联剂乙二醇二缩水甘油醚(EGDE)及生物大分子(壳聚糖或胶原蛋白)对氨气低温等离子体处理后的聚丙烯(PP)非织造布进行表面接枝改性,探讨了接枝反应条件及改性PP非织造布的染色性、亲水性及抗菌性能。结果表明:氨气低温等离子体处理后的PP非织造布表面产生了可参与接枝反应的活性基团;EGDE具有较好的交联效果,壳聚糖的接枝效果高于胶原蛋白,较佳的接枝反应条件为交联剂0.15 g,壳聚糖质量浓度12 g/L,反应温度45℃,反应时间8 h;壳聚糖接枝改性后PP非织造布的染色性、亲水性及抗菌性能均得到改善,其酸性染料上染率约49%,芯吸高度0.8 cm,对金黄色葡萄球菌及大肠杆菌的抗菌率分别达96.9%和93.4%。 相似文献
3.
采用低温氧气等离子体处理聚丙烯(PP)非织造布,利用交联剂将处理后的PP非织造布与生物大分子壳聚糖或胶原蛋白进行接枝反应,探讨了接枝反应条件及改性PP非织造布的性能。结果表明:在环氧交联剂的架桥作用下,等离子体处理后的PP非织造布可接枝壳聚糖或胶原蛋白,适宜的接枝反应条件为0.1 g交联剂,45℃下12 g/L壳聚糖溶液中反应8 h,或35℃下15 g/L胶原蛋白溶液中反应6 h;经氧气等离子体处理后,PP非织造布表面引入了大量的羟基和羧基,并参与接枝反应,壳聚糖的接枝效果优于胶原蛋白;接枝改性后PP非织造布的亲水性、染色性、抗菌性及伤口愈合能力均得到提高。 相似文献
4.
5.
6.
《合成纤维工业》2016,(4):24-27
采用空气等离子体技术对涤纶非织造布表面进行了处理,利用扫描电子显微镜和光电子能谱仪分别考察了处理前后涤纶非织造布表面形态和化学成分的变化,分析了处理时间对非织造布的亲水性及其时效性以及力学性能的影响。结果表明:随着空气等离子体处理时间的增加,涤纶非织造布的表面粗糙程度增加;在处理时间前90 s内,涤纶非织造布的静态水接触角由未处理时的114.3°下降到33.2°,90~150 s接触角趋于稳定;经等离子体处理的试样表面含碳量下降,含氧和含氮基团增加,其亲水性存在明显的时效性,适当延长处理时间可以在一定程度上抑制试样亲水性的老化效应;随着处理时间的确加,涤纶非织造布的纵向和横向断裂强力缓慢下降,但不影响其主体的力学性能。 相似文献
7.
《化纤文摘》2002,(3)
20023301用可弃纺粘丙纶非织造布的亲水处理Fengming Nie…;Fangzhi Xuebao,2000,21,(2),p.101一(中)用阴离子表面活性剂(J HP渗透油,甜菜碱和改性硅油)对用可弃纺粘丙纶非织造布进行处理,并讨论了处理时间、浓度、温度对渗透时间的影响。最佳处理条件通过正交实验设计得出:时间605,溶度0.1%,温度40℃,手感柔软且处理后的PP非织造布的抗静电性能提高了,渗透时间从1805减至105,但其机械性能几乎无影响。(陈蓦)纺粘法非织造布聚丙烯纤维亲水性 20023302高度吸水性的非织造布生物降解Zhang Yuting…;Gongneng Gaofenzi Xuebao 1999,12(4)… 相似文献
8.
9.
为了改善聚丙烯(PP)非织造布的亲水性能,提高水通量,通过照射紫外光(UV)引发自由基聚合法,使丙烯酸树脂与HEMA在PP非织造布表面发生交联聚合反应,进行紫外光固化亲水改性。研究了亲水单体和光引发剂的浓度以及紫外光照射时间对聚丙烯非织造布亲水性能的影响。利用红外光谱和扫描电镜对改性PP非织造布表面的化学组成和形貌结构进行表征,通过接触角和水通量分析了改性后PP非织造布的亲水性和耐久性。结果表明,当丙烯酸树脂与HEMA的质量比为2∶1、固含量占亲水改性溶液总量的20%、光引发剂184的含量为2%、光照时间为15 s时,达到改性后PP非织造布的最优亲水性能,接触角由初始的126°下降至42°,水通量由5 543 L/(m2·h)提升至6 035 L/(m2·h),并且,具有良好的耐久性。 相似文献
10.
11.
Production scale plasma modification of polypropylene baselayer for improved water management properties 下载免费PDF全文
Through its hydrophobic properties, polypropylene (PP) offers unique potential as a functional fiber for a wide range of applications, for example, in nonwovens for hygiene applications or as a baselayer in sports textiles. Current work is focused on the modification of PP presently used in baselayers for sports textiles to increase the hydrophilicity by use of a production scale plant for low pressure plasma treatment. Attention was directed toward an increase in hydrophilicity and time stability of the achieved modification during storage. Changes in the fabric were characterized by sorption of the cationic dye (methylene blue), water retention value, water transport properties, Fourier transform infrared spectroscopy and color measurement. The obtained results indicate an improved wettability and wicking. The extent of modification decreased with storage time and parallel yellowing of treated samples was observed. This indicates chemical rearrangement of the products initially formed on the fiber surface. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41294. 相似文献
12.
随着非织造布生产技术的发展,研究测试和综合评价服用非织造布的手感性能显得日趋重要。借助传统织物的手感性能测试方法和仪器,可以对薄型聚丙烯纺粘非织造布的手感性能进行测试和评价。压缩性能、刚柔性能和折皱弹性等手感性能基本可以反映薄型纺粘织物的手感性能。测试结果表明,粘合区域的粘合性能是影响织物手感性能的决定性因素。 相似文献
13.
A series of polylactic acid (PLA) nonwovens were prepared by the melt blowing process using micro and nano dies. The nonwovens were characterized for structural, thermal, and mechanical properties. These properties varied with the type of die, airflow, and die to collector distance (DCD). The mean pore size for PLA microfiber ranged between 1.82 and 10.48 micrometers, and nanofiber nonwovens ranged between 452 and 818 nanometers. The tensile modulus and strength of PLA nonwovens increased with airflow at a given DCD, but decreased with increased DCD for a given airflow. Thermograms from calorimetry showed microfiber mats had a larger composition of beta‐form crystals than the nanofiber mats. The results showed that a wide range of nonwovens can easily be generated with properties tailored to the specific application. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40593. 相似文献
14.
15.
介绍了聚乳酸(PLA)熔喷非织造布的发展概况和目前国外先进的生产工艺,分析了PLA熔喷非织造布相关的市场问题和优缺点,认为目前国内厂家应该加快PLA熔喷非织造布的产业化开发。 相似文献
16.
将纤维素溶解于N-甲基吗啉-N-氧化物(NMMO)中,采用干喷湿纺的方法制备了一种全新的Lyocell长丝非织造材料。通过试验考察了不同牵伸倍数对Lyocell长丝非织造材料相关性能的影响,采用扫描电镜、X射线衍射仪对Lyocell长丝非织造材料进行了表征,并对Lyocell长丝非织造材料和Lyocell短纤非织造材料的力学性能、掉屑性能以及吸水性能进行了对比研究。结果表明:对于该体系,制备工艺参数中的牵伸倍数对样品中纤维的直径、样品的厚度影响较大;同时也间接影响样品的力学性能、掉屑性能以及吸水性。Lyocell长丝非织造材料的吸水性能略优于Lyocell短纤非织造材料,但力学性能和掉屑性能远优于后者。 相似文献
17.
This article reviews the noise absorption capacity of thermally bonded nonwovens in the range of audible frequencies (125–2500 Hz). First, we focus on the effects of the properties of the fibers, which constitute nonwovens, on the sound absorption properties, and then we consider the web orientation angle of nonwovens. We also investigate a composite model of the sound absorption properties of nonwovens, including the surface roughness and panel vibration. We have used an impedance tube interferometer, which provides the normal incidence sound absorption coefficient of materials, for the determination of the noise absorption properties of nonwovens produced under different conditions. The noise absorption capacity of nonwovens depends primarily on the thickness and surface characteristics of specimens, but the effects of the fiber contents are only marginal. Interestingly, when there is a panel in front of nonwovens, the noise absorption capacity increases significantly at low and medium frequencies (250–1000 Hz). © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2295–2302, 2004 相似文献