Activated carbon with high yield were prepared from five kinds of waste biomasses including corncob,wheat straw,bamboo,coconut shell and cotton straw by salfuric acid treatment(SAT).
以玉米芯、麦秸、竹子、棉花秆、椰子壳五种农作物废弃物为原料,利用硫酸对原料进行预处理,并以水蒸气为活化剂制备高收率生物基多孔炭。
Bisphenol-A dicyanate ester(BADCy) was synthesized by use a modified cyanogens halide-phenol method,which the main idea was to add a co-catalyst into the synthetic system to improve the stability of the active cyanogens ' intermediate and fulfill the high purity and high yield BADCy synthesize.
采用“改进的卤化氰-酚法”法,通过加入助催化剂提高“活性氰中间体”的稳定性以实现高纯度、高收率双酚A型氰酸酯单体(BADCy)的合成。
The technology of producing high shrinkage (up to 28%) acrylic tops by steam-setting the acrylic filament yarn is introduced.
探讨了干法腈纶长丝经过汽蒸定型后用于28%以上高收缩率毛条的生产工艺,结果表明,选择合理的汽蒸定型工艺,并结合拉断机热板温度、热牵伸倍数、牵伸速率等工艺参数的优化,成功开发出汽蒸缩率28%以上的高收缩毛条。
By means of the experiment and the research of the technology condition of the high shrinkage acrylic fiber on drawing 1 ,dry,and drawing 2,point out the key technique that affect the production of the high shrinkage acrylic fiber.
通过对高收缩腈纶短纤维一次牵伸、干燥及二次牵伸等工艺条件的试验与研究,指出了影响高收缩腈纶短纤维生产的技术关键,尤其对二次牵伸及其卷曲的工艺控制难点进行了分析,全面阐述了工业化生产高收缩短纤维的工艺过程,并对纤维性能及用途进行了介绍。
The process of PET high shrinkage FDY by one step of spin-drawing was introduced.
介绍了运用热辊纺丝拉伸一步法纺制高收缩全拉伸丝的工艺,同时论述了各项关键技术参数对纤维收缩率的影响。