共查询到15条相似文献,搜索用时 156 毫秒
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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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《Polymer-Plastics Technology and Engineering》2013,52(5):935-946
Abstract The effect of diazonium salts and alkali on some physico‐mechanical properties, viz, tensile strength, tenacity, elongation at break, moisture regain, shrinkage, loss in weight, etc. of jute fiber has been studied. The tensile strength, tenacity, elongation at break, and moisture regain properties of the treated (dyed) fiber are found lower in comparison with those of raw (control) fiber. However, higher tensile strength and tenacity of the diazonium salts‐treated jute fiber are observed in comparison with those of the alkali‐treated fiber. The nature of the shades developed on jute fiber is also reported. 相似文献
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以聚乙醇酸(PGA)为原料,采用熔融纺丝-拉伸-卷绕一步法工艺制备PGA纤维,研究了工艺路线对纤维结构的影响,重点讨论了拉伸倍数对纤维的结构、力学性能、回弹性能及亲水抗静电性能的影响。结果表明:采用熔融纺丝-拉伸-卷绕一步法工艺,可以较好地实现PGA纤维的热拉伸,纤维与纤维之间不易黏结,纤维结构的稳定性得到改善;随着拉伸倍数的提高,PGA纤维的声速值及结晶度增加,断裂强度提高,断裂伸长率减小,总弹性形变增加,回潮率和体积比电阻变化不大;拉伸倍数从2.8提高到3.0,PGA纤维的断裂强度从2.5 cN/dtex提高至4.1 cN/dtex,断裂伸长率从26.60%降至20.40%,总弹性形变从41.24%增加至51.69%,回潮率从1.14%增加至1.26%,体积比电阻从1.53×109Ω·cm降至1.02×109Ω·cm。 相似文献
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Jute fiber was treated with three different hydroxy benzene diazonium salts in acidic and basic media. The formation of coupling with lignin in the polymer system was observed by the infrared spectra and nitrogen content estimation. The physico-mechanical properties, viz., tensile strength, tenacity, elongation at break, moisture regain, shrinkage, and loss in weight of jute fiber were studied. The tensile strength, tenacity, and moisture regain properties of the treated fiber were found lower in comparison to those of raw (control) fiber. However, higher tensile strength and tenacity of the fiber treated with ortho hydroxy benzene diazonium salts in comparison to fiber treated with meta hydroxy benzene diazonium salts were observed. The tensile strength and tenacity of the fiber treated with meta hydroxy benzene diazonium salts were higher than those of the fiber treated with para hydroxy benzene diazonium salts. The elongation at break of the treated fiber is found greater than that of the raw fiber. The fiber treated in basic media shows higher tensile strength than that treated in acidic media. The formation of metallated azo complex compound on jute fiber was observed by infrared spectra. The nature of the shades developed on jute fiber was also reported. 相似文献