共查询到16条相似文献,搜索用时 331 毫秒
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研究了丝胶蛋白与丙烯腈通过自由基聚合接枝共聚制备纺丝液的方法,并测定聚合物中丝胶蛋白接枝效率和纺丝液的黏温曲线。通过红外光谱和X射线衍射分析共聚物和纤维的特征峰和结晶度,通过纤维强力仪、烘箱干燥和酸碱液浸泡测试纤维的强伸性能、回潮率和耐酸碱性。结果表明:反应6 h,丝胶蛋白接枝效率基本保持稳定;温度在40~50℃之间,纺丝液的黏流性能最利于纺丝;共聚物红外光谱图中含有丝胶蛋白与丙烯腈的特征峰;X射线衍射分析得出接枝前后聚丙烯腈的内部结晶结构未被破坏,且丝胶含量越高结晶度越低;纤维的断裂强度达4.01 cN/dtex、断裂伸长率为45.75%,回潮率为5.8%,不耐长时间的高温强酸强碱处理。 相似文献
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测试了蜂窝微孔改性涤纶的红外光谱、热失重、强伸度、回潮率及吸湿导湿、溶解等性能,并与Coolplus纤维和普通涤纶进行了对比分析。结果表明:蜂窝微孔改性涤纶的红外特征吸收谱带与普通涤纶基本相似;燃烧后残留物形状不同,主失重温度427.46℃,热失重率达到80.2477%;与Coolplus纤维和普通涤纶相比,溶解性相似,但更不耐碱;强度稍低,断裂伸长率介于两者之间;回潮率及吸湿导湿性能明显改善,质量比电阻较低,可纺性能较好。 相似文献
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<正> 日本尤尼吉卡公司已成功地商业化生产了一种具有阻燃和耐热、耐酸性能的间位芳族聚酰胺纤维阿佩尔(Apyeil)。该纤维是以非熔融的聚酰胺为原料、采用特殊的方法纺丝而成的。该纤维的性能为:湿强3~3.6cN/dT;空调下的强力4.1~4.5cN/dT;湿态下断裂伸长40~50%;空调下断裂伸长35~45%,回潮率5,5%,加热至250℃、1000小时后剩余强力80%;在40%的H_2SO_4中剩余强力55%,极限氧 相似文献
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微波处理对棉纤维结构与性能的影响 总被引:2,自引:0,他引:2
采用扫描电子显微镜、X射线衍射和傅立叶红外光谱等方法测定并分析了微波辐照后棉纤维的形态结构、结晶度、取向度及吸湿指数等,探讨了微波辐照对棉纤维结构与性能的影响。实验结果表明:微波处理后棉纤维的回潮率下降,断裂强力总体趋势下降,但在特定的微波辐照参数下,强力上升;微波处理改变了棉纤维的形态结构,使得纤维表面变得粗糙,结晶度下降,取向度和吸湿指数增大。 相似文献
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Characterizing a novel method for blending regenerated cellulose structures with polyester filaments
The combination method of various manmade fibers with other fibers was developed to create special properties many years ago. Fibers can be mixed in a generation process, such as in solution or melt spinning, or in a fiber spinning process in the form of filaments, staple, sliver, yarn, and so on. Hybrid blended yarns are a common class of yarns in the textile industry, and the most are produced through cotton–polyester or viscose–polyester blending in the spinning process. The cellulose fibers blended in spun yarns should be at least 1 in. in length with appropriate surface properties. This causes limitations in the use of cheap materials. Cheap products owe their manufacturing to waste papers, wood trash, poor linters of cotton, spinning trash, and so on. In this study, a new method for combining regenerated cellulose structures with polyester filaments was examined; it is different from conventional hybrid polyester–viscose fiber production. In the first step, the viscose pulp was prepared and then coated on the polyester filaments in various forms. The properties, including the tensile strength, density, yarn count, moisture regain, static electricity, and dyeing, of the resulted hybrid fibers were evaluated with a variety of methods. The results show that almost all of the properties of the coated samples were improved, especially the moisture absorbance, static electricity, and dyeing properties. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 相似文献
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共混法涤纶粗细节丝的性能研究 总被引:1,自引:0,他引:1
讨论了共混纺丝法制备的涤纶粗细节丝(BTTPF)的独特性能和添加剂对它的影响,并对碱处理后的BTTPF性能进行了探索。实验发现,BTTPF中粗细节丝段的性质有很大差异,其粗节强度、初始模量比细节低,伸长、沸水收缩率、上染率比细节高。随着添加剂含量的增加,粗细节强度、初始模量均下降,伸长、上染率上升。碱处理后的BTTPF,其吸湿率、吸水高度和上染率比纯涤纶更佳。 相似文献
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