废旧毛/涤混纺织物的分离和降解
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摘要
采用次氯酸钠氧化法对废旧毛/涤混纺织物进行分离和降解研究。通过分析次氯酸钠浓度及其与毛/涤混纺织物的质量比、反应时间和温度等影响因素,确定优化的降解工艺条件为:次氯酸钠浓度5 mol/L,次氯酸钠与混纺织物的质量比为40∶1,65℃反应2.5 h,可将毛/涤混纺织物中的羊毛完全降解,分离得到可回收利用的涤纶纤维。
The waste wool/polyester fabric is separated and degraded with sodium hypochlorite oxidation method. By analyzing the influencing factors such as sodium hypochlorite concentration, reaction time and temperature, the process conditions of degradation are obtained: sodium hypochlorite concentration 5 mol/L, the ratio of sodium hypochlorite to blended fabric 40∶1, reaction at 65 ℃ for 2.5 h. With the above process, the wool fiber in blended fabric can be completely degraded and the reusable polyester fiber can be obtained by separation.
The waste wool/polyester fabric is separated and degraded with sodium hypochlorite oxidation method. By analyzing the influencing factors such as sodium hypochlorite concentration, reaction time and temperature, the process conditions of degradation are obtained: sodium hypochlorite concentration 5 mol/L, the ratio of sodium hypochlorite to blended fabric 40∶1, reaction at 65 ℃ for 2.5 h. With the above process, the wool fiber in blended fabric can be completely degraded and the reusable polyester fiber can be obtained by separation.
引文
[1]杨从从,陈珂,牛传文,等.废旧纺织品循环利用现状及标准化体系建设(一)[J].印染,2016,42(24):49-53.
[2]杨从从,陈珂,牛传文,等.废旧纺织品循环利用现状及标准化体系建设(二)[J].印染,2017,43(1):53-56.
[3]姚炯平,孟家光,程燕婷,等.废旧毛涤粘混纺面料的脱色[J].印染,2017,43(22):36-39.
[4]周文聪,张贤,张铁江,等.废旧纤维回收技术及原理[J].纺织科技进展,2010,(6):18-22.
[5]孔伟.废弃涤棉混纺纤维的分离技术研究[D].大连:大连工业大学,2012.
[6]程燕婷,孟家光,苟喆.废旧毛涤混纺面料溶解效果表征[J].成都纺织高等专科学校学报,2016,33(4):74-76.
[7]程燕婷,孟家光,苟喆,等.废旧毛涤混纺面料的溶解工艺[J].印染,2017,43(24):12-15.
[8] MARIA-BEATRICE C, SABRINA B, MAURO A. Poly(ethylene terephthalate)(PET)degradation during the Zn catalysed transesterification with dibutyl maleate functionalized polyolefins[J].Science Direct,2007,48:1276-1286.
[9]张健飞,王晓春,巩继贤,等.酶对DTP及PET纤维的降解性能探讨[J].东华大学学报(自然科学版),2003,29(3):105-109.
[10]张子恒.微波法在离子液体制备及催化降解PET聚酯回收对苯二甲酸上的应用研究[D].上海:东华大学,2012.
[2]杨从从,陈珂,牛传文,等.废旧纺织品循环利用现状及标准化体系建设(二)[J].印染,2017,43(1):53-56.
[3]姚炯平,孟家光,程燕婷,等.废旧毛涤粘混纺面料的脱色[J].印染,2017,43(22):36-39.
[4]周文聪,张贤,张铁江,等.废旧纤维回收技术及原理[J].纺织科技进展,2010,(6):18-22.
[5]孔伟.废弃涤棉混纺纤维的分离技术研究[D].大连:大连工业大学,2012.
[6]程燕婷,孟家光,苟喆.废旧毛涤混纺面料溶解效果表征[J].成都纺织高等专科学校学报,2016,33(4):74-76.
[7]程燕婷,孟家光,苟喆,等.废旧毛涤混纺面料的溶解工艺[J].印染,2017,43(24):12-15.
[8] MARIA-BEATRICE C, SABRINA B, MAURO A. Poly(ethylene terephthalate)(PET)degradation during the Zn catalysed transesterification with dibutyl maleate functionalized polyolefins[J].Science Direct,2007,48:1276-1286.
[9]张健飞,王晓春,巩继贤,等.酶对DTP及PET纤维的降解性能探讨[J].东华大学学报(自然科学版),2003,29(3):105-109.
[10]张子恒.微波法在离子液体制备及催化降解PET聚酯回收对苯二甲酸上的应用研究[D].上海:东华大学,2012.