共查询到19条相似文献,搜索用时 218 毫秒
1.
2.
3.
采用紫外光辐射引发接枝的技术,将自制的含磷阻燃单体甲基丙烯酰氧乙基-二乙基磷酸酯(DEMEP)对真丝进行阻燃改性。通过研究不同工艺参数(溶剂种类、单体浓度、引发剂种类、引发剂浓度、光照距离、光照时间、照射方式以及有无石英玻璃)对接枝率的影响,测试接枝织物的白度和极限氧指数,结果表明,随着接枝率的增大,真丝白度下降,极限氧指数明显提高,阻燃效果显著。15%~20%的DMMEP添加量可使极限氧指数达26.6%~29.2%;阻燃整理后,真丝燃烧后炭渣致密平整,主要是由于磷阻燃剂促进真丝脱水成炭所致。 相似文献
4.
5.
6.
7.
针对甲基丙烯酰胺(MAA)接枝增重真丝中采用过硫酸钾(KPS)为引发剂出现的增重丝泛黄问题,提出用KPS与具有漂白性能的双氧水(H2O2)/亚硫酸钠(Na2SO3)复合引发MAA接枝增重真丝,以提高增重率及增重丝白度;研究了工艺参数对增重率的影响。结果表明:在较优工艺条件下,与KPS引发MAA接枝增重真丝相比,H2O2/Na2SO3/KPS复合引发体系引发MAA接枝增重真丝的增重率提高了7个百分点,白度提高6左右,有效解决了KPS单独引发接枝增重丝泛黄的问题和H2O2/Na2SO3单独引发接枝增重率较低的问题。 相似文献
8.
针对甲基丙烯酰胺(MAA)接枝增重真丝纱线中采用过硫酸钾(KPS)为引发剂而出现的增重丝泛黄的问题,提出用过硫酸钾(KPS)-连二亚硫酸钠(SH)氧化还原体系引发真丝纱线接枝增重以提高增重丝白度,研究了各种工艺参数对接枝增重率的影响。结果表明:KPS-SH氧化还原体系引发MAA接枝增重真丝纱线较过硫酸钾引发增重丝白度高;当MAA的浓度为0.4mol/L时,引发剂KPS-SH和单体MAA的质量比为5:100,其中KPS与SH的摩尔比为10:3,在pH值为3,70℃接枝反应70min的工艺条件下,真丝纱线接枝增重率较KPS引发增重丝基本不变,白度较KPS引发增重丝提高19左右。 相似文献
9.
以丁烷四羧酸(BTCA)为交联剂,次亚磷酸钠(SHP)为催化剂,将β-环糊精(β-CD)接枝到真丝织物上,再经天然香茅草提取物整理,赋予真丝织物驱蚊效果。通过正交试验确定β-CD最佳接枝工艺为:BTCA质量浓度110 g/L、β-CD质量浓度70 g/L、SHP质量浓度4 g/L、焙烘条件170℃、3 min,此工艺下真丝织物增重率可达16.04%。扫面电镜(SEM)测试表明:β-CD已成功接枝到真丝织物上;β-CD接枝后真丝织物阳离子染料染色的K/S值明显提高,而酸性染料和活性染料染色的K/S值明显下降。经香茅草提取物整理的接枝真丝织物,放置一周后,对淡色库蚊驱避率仍可保持在75%以上。 相似文献
10.
11.
The aim of the current research is to study the improvement of dyeability of silk fabrics using surface modification performed by corona discharge and chitosan pre-treatment. Effects of some operational variables such as corona treatment time, concentration of chitosan, time, and temperature on grafting process were examined through dyeability of silk fabrics using two commercial reactive dyes. Fourier transform infra-red and scanning electron microscopy spectroscopy data revealed the surface modification of the silk by corona discharge and grafting of chitosan onto the silk fabric. Optimal grafting values obtained were corona treatment time 30 min, concentration of chitosan 18% owf, time 2 h and temperature 60 °C. It was found that silk pretreatment with corona discharge and chitosan improved dyeability from 1.84 to 4.58 for RY and from 3.05 to 6.40 for RB. The results indicated that the color fastness and tensile strength of silk fabrics were not significantly affected irrespective of the grafting with corona and chitosan pre-treatment. The results of this study provide the potential making of eco-friendly modification and reactive dyeing of textile fibers using corona discharge and chitosan pre-treatment. 相似文献
12.
13.
14.
In this paper, silk fabrics were modified with flame retardant dimethyl-2-(methacryloyloxyethyl) phosphate using radiation of UV light with band 254?nm initiated by a photo catalyst methyl 2-benzoylbenzoate. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), energy dispersive X-ray spectroscopy, and scanning electron microscope (SEM) analysis were used to investigate the surface grafting evidence of flame retardant. Wide angle X-ray diffraction analysis showed the crystalline structure of grafted silk fiber and showed that graft treatment did not change the crystalline structure of silk fiber. Thermal gravimetric analysis explored the thermal decomposition mode of control and grafted silk fibers. The initial decomposition temperature decreased and produced more residues during main decomposition stage. SEM analysis of char residue showed that the grafted silk will produce solid and rigid char after combustion. Heat release rate and CO yield of modified silk fabrics both decreased. From above, it can get the flame retardancy mechanism that treated silk fiber promoted to form more nonflammable char during combustion so as to improve fire safety in real fire. 相似文献
15.
为提高蚕丝织物的染色牢度,以重氮化-偶合染色工艺采用芳伯胺染料对蚕丝织物进行染色,优化了同浴加热阶段上染温度、染浴pH值和元明粉质量浓度等染色条件,研究了染色前后颜色变化机制,并探讨了该方法的染料适用范围。结果表明:将芳伯胺染料与蚕丝织物同浴加热上染后,再在低温下将染料重氮化,并立即与蚕丝偶合,可大幅提升染色织物的K/S值;染色织物颜色的改变源于染色后染料分子共轭体系改变导致的发色体能级带隙的变化;苯胺类、萘胺类及1-氨基蒽醌类芳伯胺染料均适用于该反应性染色方法,染色蚕丝织物的耐皂洗色牢度及耐摩擦色牢度均能达到4级以上。 相似文献
16.
为考察抗菌织物的耐洗性及皮肤刺激性,以经纳米银整理的抗菌丝织物为实验对象,采用琼脂平皿扩散法和吸收法对其抗菌性能进行定性和定量实验,采用电感耦合等离子体质谱仪(ICP-MS)测定样品的金属溶出量,同时利用EPI-MODEL人体皮肤模型,对织物水萃取液的皮肤刺激性进行初步研究。结果显示:在洗涤50次后,样品对大肠杆菌8099和金黄色葡萄球菌ATCC6538的抗菌率依然在99%以上,具有良好的耐洗性能;织物水萃取液对皮肤无刺激性,较为安全。 相似文献
17.
18.
19.
壳聚糖季铵盐在桑蚕丝织物抗菌整理中的应用 总被引:1,自引:0,他引:1
基于壳聚糖季铵盐良好的抑菌性和水溶性,将2,3-环氧丙基三甲基氯化铵与壳聚糖合成了壳聚糖季铵盐。采用最小抑菌浓度法测定和比较了壳聚糖及壳聚糖季铵盐的抗菌性,并将其用于桑蚕丝织物的抗菌整理,采用振荡烧瓶法对处理前后的丝织物进行抗菌性测试。结果表明: 壳聚糖及其季铵盐对金黄色葡萄球菌和大肠杆菌均有显著的抑菌性,且壳聚糖季铵盐的抑菌效果优于壳聚糖;经壳聚糖及其季铵盐处理后,桑蚕丝织物对金黄色葡萄球菌和大肠杆菌的抑菌率均明显提高,且壳聚糖季铵盐的抑菌效果更好。 相似文献