散毛纤维超临界二氧化碳染色

以活性分散翠蓝2G-SF和改性散毛纤维为原料,以超临界二氧化碳代替传统染色中的水作为染色介质,研究了压力、温度及时间对上染率的影响,得出最佳工艺条件:压力27MPa,温度120℃,时间90min。利用超临界二氧化碳对散毛纤维直接染色可达到传统水浴染色效果,并具有染色工艺流程短、纤维染色质量好、环境效益显著等特点。     

过渡金属改性活性炭脱硫化氢性能的研究

研究了过渡金属改性活性炭的催化氧化脱硫化氢的性能,通过两种不同的改性方法使过渡金属离子负载在活性炭上一种是直接用过渡金属离子的水溶液浸渍活性炭,一种是加入Al2O3粘合剂.结果表明,采用第一种改性方法硫容量比未浸渍的活性炭都有提高,而Zn离子浸渍的活性炭硫容量最大;第二种方法改性的活性炭只有Cu和Ag离子改性后的硫容量得到提高,其它反而下降.根据实验结果,推测了过渡金属离子在活性炭上脱除硫化氢的机理.     

活性炭脱除低浓度硫化氢研究进展

用活性炭脱除低浓度的硫化氢是一种经济有效的方法。综述了近年来国内外在这方面的研究进展,归纳了反应机理,总结了活性炭孔道结构、湿度、改性剂以及原料气组分、活性炭表面化学环境等对反应的影响,总结了失活后活性炭的再生方法：用水蒸汽或惰性气体热再生和直接用空气氧化再生。并预测了这种方法的应用前景。     

Influence of Additive Gas on Electrical and Optical Characteristics of Non-equilibrium Atmospheric Pressure Argon Plasma Jet

Electrical and optical properties of an argon plasma jet were characterized. In particular, effects of an additive gas, namely nitrogen or oxygen, on these prop...     

High-Density Polyethylene(HDPE) Surface Treatment Using an RF Capacitive Atmospheric Pressure Cold Ar Plasma Jet

In this study,a high-density polyethylene（HDPE,5-mm-thick,0.95 g/cm3） surface was treated using an RF capacitive atmospheric pressure cold Ar plasma jet.By using this Ar plasma jet,a hydrophilic HDPE surface was formed during the plasma treatment.In particular, the effects of an additive gas（N₂ or O2） on the HDPE surface treatment were investigated in detail.It was shown that the addition of N2 or O2 gas had an important influence on the HDPE surface treatment.Compared to pure Ar plasma treatment,a lower value of water contact angle （WCA） was obtained when a trace of N2 or O2 gas was added.It was also found that besides the quantities of active species in the plasma jet,the treatment temperature played an important role in the HDPE surface treatment.This is because surface molecular motion is not negligible when the treatment temperature is close to the melting point of the polymer.