It is helpful to optimize the development of super-flexible spandex production technology by actively exploring the promotion methods of production technology. Based on this, in order to improve the production technol...It is helpful to optimize the development of super-flexible spandex production technology by actively exploring the promotion methods of production technology. Based on this, in order to improve the production technology of super-flexible spandex, this paper summarizes the optimization points of three production technology factors from three aspects: operation, facilities and formula, and puts forward corresponding technology upgrading methods around these optimization points, and constructs a set of super-flexible spandex production technology upgrading scheme. After a period of use, it is found that this scheme can effectively improve the production technology of super-flexible spandex and enhance the production level of super-flexible spandex. In this paper, three technical upgrading methods of super-flexible spandex are elaborated in detail, including optimizing spinning process operation, improving spinning process facilities and adjusting spinning process formula, as well as improving PTG molecular weight, changing PTG/MDI molar ratio, reducing additive dosage, adjusting spinneret capillary hole size, appropriately reducing spinning tension and improving spinning process, hoping to help the development of polyester fiber material manufacturing industry. It realized the in-depth analysis of the process system construction of super-flexible spandex, hoping to provide assistance for the development of polyester fiber material manufacturing industry.展开更多
Ultrathin(thickness less than 10μm)and ultralight flexible perovskite solar cells(FPSCs)have attracted extensive research enthusiasm as power sources for specific potential lightweight applications,such as drones,bli...Ultrathin(thickness less than 10μm)and ultralight flexible perovskite solar cells(FPSCs)have attracted extensive research enthusiasm as power sources for specific potential lightweight applications,such as drones,blimps,weather balloons and avionics.Currently,there is still a certain gap between the power conversion efficiency(PCE)of ultrathin FPSCs and common FPSCs.This study demonstrates ultrathin FPSCs on 3-μm-thick parylene-C substrates via a flip-over transferring process.The Zr,Ti and Ga-doped indium oxide(ITGZO)film is employed as the bottom transparent electrode of ultrathin inverted FPSCs with a remarkable PCE of 20.2%,which is comparable to that based on common FPSCs.Devices on glasses and parylene-F(i.e.,parylene-VT4)substrates were also constructed to verify the advantages of parylene-C.Furthermore,an excellent powerper-weight of 30.3 W g^(-1) is achieved attributed to remarkable PCE and ultrathin-ultralight substrates,demonstrating the great promise of fabricating efficient,ultrathin and ultralight solar cells with parylene-C films.展开更多
文摘It is helpful to optimize the development of super-flexible spandex production technology by actively exploring the promotion methods of production technology. Based on this, in order to improve the production technology of super-flexible spandex, this paper summarizes the optimization points of three production technology factors from three aspects: operation, facilities and formula, and puts forward corresponding technology upgrading methods around these optimization points, and constructs a set of super-flexible spandex production technology upgrading scheme. After a period of use, it is found that this scheme can effectively improve the production technology of super-flexible spandex and enhance the production level of super-flexible spandex. In this paper, three technical upgrading methods of super-flexible spandex are elaborated in detail, including optimizing spinning process operation, improving spinning process facilities and adjusting spinning process formula, as well as improving PTG molecular weight, changing PTG/MDI molar ratio, reducing additive dosage, adjusting spinneret capillary hole size, appropriately reducing spinning tension and improving spinning process, hoping to help the development of polyester fiber material manufacturing industry. It realized the in-depth analysis of the process system construction of super-flexible spandex, hoping to provide assistance for the development of polyester fiber material manufacturing industry.
基金financially supported by Beijing Natural Science Foundation(JQ21005)the National Key R&D Program of China(2021YFB3800100 and 2021YFB3800101)+1 种基金China Postdoctoral Science Foundation(2020M670036)the R&D Fruit Fund(20210001)。
文摘Ultrathin(thickness less than 10μm)and ultralight flexible perovskite solar cells(FPSCs)have attracted extensive research enthusiasm as power sources for specific potential lightweight applications,such as drones,blimps,weather balloons and avionics.Currently,there is still a certain gap between the power conversion efficiency(PCE)of ultrathin FPSCs and common FPSCs.This study demonstrates ultrathin FPSCs on 3-μm-thick parylene-C substrates via a flip-over transferring process.The Zr,Ti and Ga-doped indium oxide(ITGZO)film is employed as the bottom transparent electrode of ultrathin inverted FPSCs with a remarkable PCE of 20.2%,which is comparable to that based on common FPSCs.Devices on glasses and parylene-F(i.e.,parylene-VT4)substrates were also constructed to verify the advantages of parylene-C.Furthermore,an excellent powerper-weight of 30.3 W g^(-1) is achieved attributed to remarkable PCE and ultrathin-ultralight substrates,demonstrating the great promise of fabricating efficient,ultrathin and ultralight solar cells with parylene-C films.
