不同烘茧温度对茧丝品质的影响
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摘要
采用热风循环烘茧机对蚕茧进行干燥,探讨了不同头冲温度对生丝力学性能和丝胶结构的影响。通过一粒缫、力学性能测试、热重分析和红外光谱法分别对不同头冲温度处理后缫制生丝的力学性能、落绪分布和丝胶结构进行了研究,并用视频光学接触角测量仪观察了茧层的亲水性。研究表明,鲜茧经过高温干燥后茧层丝胶会产生热变性,理化性能发生改变,茧层丝胶的分子结构从无规卷曲向β-折叠结构转化。当头冲温度为105℃时,生丝力学性能最好,洁净成绩最高,且热稳定性最好。
The hot air circulation drying machine was used to dry cocoons,and the influence of different primary drying temperature on the mechanical properties and sericin structure of raw silk was discussed.The mechanical properties,dropping end distribution and sericin structure of raw silk treated with different primary drying temperature were studied by means of single cocoon reeling,mechanical property test,thermogravimetric analysis and infrared spectroscopy.Besides,the video optical contact angle meter was applied to observe the hydrophilicity of the cocoon layer.Studies showed that sericin at the cocoon layer generated thermotropy after the cocoons were dried under high temperature,and the physical and chemical properties of the cocoons were changed.The molecular structure of sericin at the cocoon layer transformed from the random coil to the beta-folding structure.When the primary drying temperature was 105 ℃,the mechanical property,neatness and thermal stability of raw silk were the best.
The hot air circulation drying machine was used to dry cocoons,and the influence of different primary drying temperature on the mechanical properties and sericin structure of raw silk was discussed.The mechanical properties,dropping end distribution and sericin structure of raw silk treated with different primary drying temperature were studied by means of single cocoon reeling,mechanical property test,thermogravimetric analysis and infrared spectroscopy.Besides,the video optical contact angle meter was applied to observe the hydrophilicity of the cocoon layer.Studies showed that sericin at the cocoon layer generated thermotropy after the cocoons were dried under high temperature,and the physical and chemical properties of the cocoons were changed.The molecular structure of sericin at the cocoon layer transformed from the random coil to the beta-folding structure.When the primary drying temperature was 105 ℃,the mechanical property,neatness and thermal stability of raw silk were the best.
引文
[1]陈文兴,傅雅琴.蚕丝加工工程[M].北京:中国纺织出版社,2013:25-27.
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[4]陈锦祥,朱跃星.论提高蚕茧干燥能力的技术关键[J].蚕业科学,1993(4):238-241.
[5]陈时若,程洪伟,金励征,等.蚕茧干燥时空气温湿度与茧质的关系[J].纺织学报,1983(10):33-37.
[6]戚文兴,江文斌,傅雅琴,等.一种阶梯式热风循环加热烘茧机:中国,201610057717.9[P].2016-01-28.
[7]刘兰,姚跃飞,孙矿华,等.干茧触蒸前处理对茧层表面与液滴接触角的影响[J].蚕业科学,2016,42(2):302-306.
[8]封纪述.蚕茧干燥的特殊性及烘茧机的研制方案[J].四川丝绸,2003(2):8-10.
[9]闵思佳,朱良均,胡智文.收烘茧工艺对洁净的影响[J].丝绸,2001(3):14-15.
[10]胡彬慧,何秀玲,朱良均,等.雄蚕生丝的热学性能研究[J].蚕业科学,2016,42(2):294-301.
[11]张孟丽,邢秋明,江文斌,等.假捻机构的技术参数对生丝性能的影响[J].丝绸,2017,54(2):6-10.
[12]苏州丝绸工学院,浙江丝绸工学院.制丝化学[M].2版.北京:中国纺织出版社,1996:61.
[2]陈建勇,陈时若.用过热蒸汽干燥蚕茧的探讨[J].纺织学报,1989(12):19-22.
[3]傅雅琴,金先德.过热蒸汽烘茧对茧丝品质的影响[J].浙江丝绸工学院学报,1993(4):19-24.
[4]陈锦祥,朱跃星.论提高蚕茧干燥能力的技术关键[J].蚕业科学,1993(4):238-241.
[5]陈时若,程洪伟,金励征,等.蚕茧干燥时空气温湿度与茧质的关系[J].纺织学报,1983(10):33-37.
[6]戚文兴,江文斌,傅雅琴,等.一种阶梯式热风循环加热烘茧机:中国,201610057717.9[P].2016-01-28.
[7]刘兰,姚跃飞,孙矿华,等.干茧触蒸前处理对茧层表面与液滴接触角的影响[J].蚕业科学,2016,42(2):302-306.
[8]封纪述.蚕茧干燥的特殊性及烘茧机的研制方案[J].四川丝绸,2003(2):8-10.
[9]闵思佳,朱良均,胡智文.收烘茧工艺对洁净的影响[J].丝绸,2001(3):14-15.
[10]胡彬慧,何秀玲,朱良均,等.雄蚕生丝的热学性能研究[J].蚕业科学,2016,42(2):294-301.
[11]张孟丽,邢秋明,江文斌,等.假捻机构的技术参数对生丝性能的影响[J].丝绸,2017,54(2):6-10.
[12]苏州丝绸工学院,浙江丝绸工学院.制丝化学[M].2版.北京:中国纺织出版社,1996:61.