At present, we have succeeded in producing silk noil yarn by rotor spinning, and obtained good economic benefits. In this paper, through combining with the recent producing practice, systematically discussing and anal...At present, we have succeeded in producing silk noil yarn by rotor spinning, and obtained good economic benefits. In this paper, through combining with the recent producing practice, systematically discussing and analysing the technology in the process of producing silk noil yarn by rotor spinning, we develop the new technology which is suited to produce silk noil yarn by rotor spinning, and address several noticable problems. The conclusions have been put into practice and proved to be effective and reliable. It can be consulted by the textile mills.展开更多
This paper analyzes the causes of loop deformation of flat silk knitted fabric made from parallel spun silk/ramie core yarn. Through the measurement and analysis on the loop deformation of various samples, it is concl...This paper analyzes the causes of loop deformation of flat silk knitted fabric made from parallel spun silk/ramie core yarn. Through the measurement and analysis on the loop deformation of various samples, it is concluded that the problem herein mentioned would be improved to a certain extent by changing the fabric density or mixknitting from yarn with different direction of twist.展开更多
This paper studies rotor spinning blended yarn produced of spun silk and cashmere.Nine samples were spun,from three different opening rollers and different navels.According to the Uster test results of yarn quality pr...This paper studies rotor spinning blended yarn produced of spun silk and cashmere.Nine samples were spun,from three different opening rollers and different navels.According to the Uster test results of yarn quality properties,optimum selection is done by using analysis method of combining fuzzy decision-making and fuzzy pattern classification.Experimental plan is designed based on universal rotated experimental design,and the method of confined optimization is used to optimize the speed of opening roller,the speed of rotor and twist factor,according to the results of yarn quality test by Uster.展开更多
Smart textiles are attracting great interest.Particularly,air-conditioning textiles are highly desired for their merits in energy conservation and personal temperature/humidity management.Currently,air-conditioning te...Smart textiles are attracting great interest.Particularly,air-conditioning textiles are highly desired for their merits in energy conservation and personal temperature/humidity management.Currently,air-conditioning textiles can be fabricated by two strategies.One uses infrared-radiation-adaptive materials,and the other uses moisture-responsive actuators that can regulate temperature and humidity simultaneously.Here,the fabrication of a silk-yarn switch comprising electrospun highly aligned nanofibers is reported and its application in air-conditioning textiles is demonstrated.Silk yarn rotates in contact with liquid,and can be recovered by drying.The different responses and wetting behaviors of the switch to H_(2)O and C_(2)H_(6)O is investigated.It is argued that alignment and surface hydrophilicity of nanofibers play important roles in this term.To elaborate,actuating trait is mainly controlled by reduction of the surface free energy of aligned silk nanofibers,during the wetting process.As proof of concept,the application of the sweat-driven silk-yarn switch in regulating the temperature/humidity of the human body is demonstrated in this work.Considering the large production,versatile processibility,and good biocompatibility,silk actuator may have practical applications in designing smart switches(or valves)for intelligent textiles,artificial muscles,and other application scenarios.展开更多
Energy harvesting textiles(EHTs)have attracted much attention in wearable electronics and the internet-of-things for real-time mechanical energy harvesting associated with human activities.However,to satisfy practical...Energy harvesting textiles(EHTs)have attracted much attention in wearable electronics and the internet-of-things for real-time mechanical energy harvesting associated with human activities.However,to satisfy practical application requirements,especially the demand for long-term use,it is challenging to construct an energy harvesting textile with elegant trade-off between mechanical and triboelectric performance.In this study,an energy harvesting textile was constructed using natural silk inspired hierarchical structural designs combined with rational material screening;this design strategy provides multiscale opportunities to optimize the mechanical and triboelectric performance of the final textile system.The resulting EHTs with traditional advantages of textiles showed good mechanical properties(tensile strength of 237±13 MPa and toughness of 4.5±0.4 MJ m−3 for single yarns),high power output(3.5 mW m−2),and excellent structural stability(99%conductivity maintained after 2.3 million multi-type cyclic deformations without severe change in appearance),exhibiting broad application prospects in integrated intelligent clothing,energy harvesting,and human-interactive interfaces.展开更多
文摘At present, we have succeeded in producing silk noil yarn by rotor spinning, and obtained good economic benefits. In this paper, through combining with the recent producing practice, systematically discussing and analysing the technology in the process of producing silk noil yarn by rotor spinning, we develop the new technology which is suited to produce silk noil yarn by rotor spinning, and address several noticable problems. The conclusions have been put into practice and proved to be effective and reliable. It can be consulted by the textile mills.
文摘This paper analyzes the causes of loop deformation of flat silk knitted fabric made from parallel spun silk/ramie core yarn. Through the measurement and analysis on the loop deformation of various samples, it is concluded that the problem herein mentioned would be improved to a certain extent by changing the fabric density or mixknitting from yarn with different direction of twist.
文摘This paper studies rotor spinning blended yarn produced of spun silk and cashmere.Nine samples were spun,from three different opening rollers and different navels.According to the Uster test results of yarn quality properties,optimum selection is done by using analysis method of combining fuzzy decision-making and fuzzy pattern classification.Experimental plan is designed based on universal rotated experimental design,and the method of confined optimization is used to optimize the speed of opening roller,the speed of rotor and twist factor,according to the results of yarn quality test by Uster.
基金This work was supported by the NSF of China(51672153,51422204,21975141)the National Key Basic Research and Development Program(No.2016YFA0200103)the National Program for Support of Top-notch Young Professionals.
文摘Smart textiles are attracting great interest.Particularly,air-conditioning textiles are highly desired for their merits in energy conservation and personal temperature/humidity management.Currently,air-conditioning textiles can be fabricated by two strategies.One uses infrared-radiation-adaptive materials,and the other uses moisture-responsive actuators that can regulate temperature and humidity simultaneously.Here,the fabrication of a silk-yarn switch comprising electrospun highly aligned nanofibers is reported and its application in air-conditioning textiles is demonstrated.Silk yarn rotates in contact with liquid,and can be recovered by drying.The different responses and wetting behaviors of the switch to H_(2)O and C_(2)H_(6)O is investigated.It is argued that alignment and surface hydrophilicity of nanofibers play important roles in this term.To elaborate,actuating trait is mainly controlled by reduction of the surface free energy of aligned silk nanofibers,during the wetting process.As proof of concept,the application of the sweat-driven silk-yarn switch in regulating the temperature/humidity of the human body is demonstrated in this work.Considering the large production,versatile processibility,and good biocompatibility,silk actuator may have practical applications in designing smart switches(or valves)for intelligent textiles,artificial muscles,and other application scenarios.
基金supported by the National Natural Science Foundation of China (No. 51973116, U1832109, 21935002)Shanghai Pujiang Program (18PJ1408600)the starting grant of ShanghaiTech University and Shanghai Sailing Program (17YF1411500)
文摘Energy harvesting textiles(EHTs)have attracted much attention in wearable electronics and the internet-of-things for real-time mechanical energy harvesting associated with human activities.However,to satisfy practical application requirements,especially the demand for long-term use,it is challenging to construct an energy harvesting textile with elegant trade-off between mechanical and triboelectric performance.In this study,an energy harvesting textile was constructed using natural silk inspired hierarchical structural designs combined with rational material screening;this design strategy provides multiscale opportunities to optimize the mechanical and triboelectric performance of the final textile system.The resulting EHTs with traditional advantages of textiles showed good mechanical properties(tensile strength of 237±13 MPa and toughness of 4.5±0.4 MJ m−3 for single yarns),high power output(3.5 mW m−2),and excellent structural stability(99%conductivity maintained after 2.3 million multi-type cyclic deformations without severe change in appearance),exhibiting broad application prospects in integrated intelligent clothing,energy harvesting,and human-interactive interfaces.
