共查询到19条相似文献,搜索用时 132 毫秒
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织物上季铵化对苎麻织物改性的新方法研究 总被引:2,自引:0,他引:2
壳多糖衍生物与叔胺化合物在苎麻织物上反应生成季铵化物并与纤维素大分子交联,从而改善其染色及弹性回复性能。本文以中心旋转试验设计对工艺条件作了最优化研究,取得了较好的效果。 相似文献
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阳离子表面活性剂改性亚麻的工艺探讨 总被引:4,自引:1,他引:3
利用聚环氧氯丙烷与二甲胺的合成产物对亚麻织物进行化学改性,以提高亚麻织物的上染率,改善其染色性能,经正交试验确立了亚麻织物的最佳改性条件。 相似文献
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苎麻阳离子改性及其染色 总被引:6,自引:0,他引:6
文章对苎麻织物采用聚环氧氯丙烷胺化物阳离子改性的工艺条件进行了研究,实验得出较合适的改性工艺条件为改性剂10%(owf),NaOH 2 g/L,50℃保温50 min,浴比1:30.确定了改性苎麻用Ramazol活性染料染色的最佳染色处方为染料3%(owf),Na2SO4 50 g/L,Na3PO4 8 g/L.对改性和未改性织物的染色上染率、K/S值和染色牢度作了比较.结果表明:苎麻经此改性剂改性后染色,K/S值及染料上染率均有较大提高,耐洗牢度比未改性苎麻织物提高半级,干、湿摩擦牢度稍有下降,但都符合牢度要求. 相似文献
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苎麻纤维酸性染料染色研究 总被引:2,自引:3,他引:2
阐述了苎麻纤维酸性染料染色的意义和进行阳离子接枝改性的原理,通过试验确定了阳离子接枝剂和接枝工艺,使酸性染料可以在中低温下染色,并使苎麻纤维与毛、丝混纺产品同浴染色成为可能。 相似文献
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采用保护和脱保护的方法合成了溴化N-乙基-N-苄基咪唑(BM[ imi] Br)离子液体,用傅里叶变换红外光谱和核磁共振谱表征了它的结构,并研究了其溶解性能和导电性能.采用BM[imi]Br的水溶液对苎麻纤维织物改性后再染色,测试了改性苎麻的染色性能.结果表明,离子液体BM[ imi] Br为强电解质,极易溶于极性溶剂中.BM[imi]Br在不同溶剂中的电导率顺序为:κ(水)>k(乙腈)>κ(DMF)>κ(无水乙醇)>κ(丙酮),其摩尔电导率随离子液体浓度的增大而减小.苎麻经离子液体处理改性后,其吸水率、吸湿率和上染率均有明显提高. 相似文献
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苎麻纤维取向度和结晶度都较高,导致苎麻的染整加工及其服用性能较差。为了改善苎麻的性能,将新型绿色溶剂——离子液体引入到苎麻的改性中。将含少量水的离子液体溶剂体系对苎麻进行溶胀,研究了处理前后苎麻结晶度、减量率、润湿性能、染色性能以及强力的变化情况。结果显示,离子液体对苎麻有较好的改性效果,处理后的苎麻结晶度下降,纤维中的部分半纤维素和果胶被去除,减量率可以达到5.3%。这种物理结构上的改性,导致苎麻润湿性能和染色性能都有一定程度的提高,但是对纱线的强力造成了一定损伤。 相似文献
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改性苎麻纤维与羊毛同浴染色研究 总被引:3,自引:0,他引:3
选用氢氧化钠和SA12分别作为苎麻的碱处理剂和阳离子改性接枝剂,对精干麻碱处理后进行阳离子改性处理,并用酸性染料染色.探讨了染色温度、酸洗工艺对改性苎麻纤维染色性能的影响,确定了毛麻同浴染色工作曲线.试验结果表明,酸洗可以减缓碱改性苎麻阳离子接枝改性的速度,使在苎麻上接枝的阳离子基团分布均匀;分时段升温的方法使染色性能略有差异的改性苎麻和羊毛的得色率趋向一致,实现毛麻的酸性染料同浴染色. 相似文献
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Three novel gemini cationic surfactants were synthesized and their structures confirmed by 1H-NMR analysis. The interaction of C.I. Acid Violet 1 dye with gemini cationic surfactants in aqueous solution was investigated by UV-Vis spectroscopy at the λmax of the acid dye–cationic surfactants. The dyeing behavior of the acid dye–cationic surfactants and their fastness properties were investigated. It was observed that the aggregation of surfactant and dye takes place at low concentrations far below 1 g/l. The further addition of surfactant resulted in an absorption spectrum characteristic of fully saturated acid dye in the cases of the 16–2-16 and 16–3-16 surfactants at 1 g/l, and in the case of the 10–3-10 surfactant 1.2 g/l. The results also showed bathochromic shifts for the acid dye followed by significant increase in the λmax at the optimum concentrations of these surfactants. The dyeability of linen fabric with acid dye–gemini cationic surfactants increased as the electrostatic interactions between the surfactant head groups and the anionic nature of the acid dye increased, but the hydrophobic interactions decreased at higher temperature. The fastness to washing and rubbing improved by increasing the alkyl length of the gemini surfactants from 10–3-10 to 16–2-16 and 16–3-16, although the spacer length had no effect. 相似文献
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Multiwalled carbon nanotubes were grafted to ramie fiber through a silane coupling agent, and its effect on the mechanical and interfacial properties of ramie/epoxy composite was studied. The properties of the grafted fiber were compared with untreated, alkali-treated, and silane-treated fibers. The scanning electron microscopy and Fourier transform infrared spectroscopy analyses revealed the grafted multiwalled carbon nanotube (MWCNT) particles on the ramie fiber. The mechanical and thermo-mechanical properties of the composite prepared by vacuum-assisted resin infusion process were significantly enhanced. The observed results suggest the interface was successfully modified by MWCNT, and the bonding between the fiber and epoxy matrix was enhanced significantly. 相似文献