Synthesis and Application of Sodium Benzoylthioglycollate to Cotton Fabric

The paper discussed the synthesis and application of sodium benzoylthioglycollate (BTG) to cotton cellulose. The main product was proved to be BTG. Dyeing substantivity of modified cotton fibre by BTG with disperse dye were improved. The effect of modification conditions, such as the property of alkali and its using amount, curing temperature and time were discussed. Colour yield and resistance to wash fastness were also measured.     

1956～2006年玛纳斯河流域棉花生长季气候变化分析

利用Man-Kendall法、墨西哥帽小波分析法,研究了玛纳斯河流域1956～2006年棉花生长季平均气温、降水量和日照时数的变化趋势和周期规律。结果表明:玛纳斯河流域棉花生长季气候变化的总体趋势向暖湿的方向发展,日照时数略有减少,其中平均气温变化的倾向率为0.36℃/10年,增温的幅度达到了极显著水平;不同时期气候变化的趋势差别很大,20世纪50、60年代平均气温的波动比较大,70年代以后气温表现出明显的上升趋势,并在1975～2006年的31年间达到0.05显著水平;棉花生长季气候变化的周期分析结果表明,棉花生长季气温、降水和日照时数均存在25～30年时间尺度的高低或多少交替,表现出明显的周期特性,并且变化周期均以30年左右的长周期为主。     

杂交棉-标杂A1的氮肥效应研究

通过大田试验研究了不同氮肥施用量对杂交棉标杂A1的生长和产量的影响。研究结果表明:随着氮肥用量的增加,杂交棉干物质和氮素积累的快速增长期推迟,但最大积累速率增加,标杂A1干物质和氮素积累的快速增长期在初花-盛铃期,持续时间40d左右;棉花总干物质和氮素积累量均随氮肥用量的增加而增加;氮肥用量显著影响棉花的铃数、单铃重及籽棉产量;棉花单铃重随氮肥用量的增加而提高,单株铃数和籽棉产量均表现为施N300kg/hm2处理的最高,其次是施N 300和150kg/hm2处理,不施N处理最低。本研究条件下杂交棉的氮肥表观利用率为41%~55%,氮肥适宜用量为310~340kg/hm2。     

The Effect of Combined Atmospheric Plasma/UV Treatments on Improving the Durability of Flame Retardants Applied to Cotton

Application of a combined atmospheric plasma/UV laser to cotton fabrics impregnated with selected non-durable flame retardants (FRs) has shown evidence of covalent grafting of the latter species on to cotton fibre surfaces. As a result, an increase in their durability to water-soaking for 30 min at 40 °C has been recorded. Based on previous research plasma gases comprising Ar^80%/CO₂^20% or N₂^80%/O₂^20% were used to pre-expose cotton fabric prior to or after FR impregnation to promote the formation of radical species and increased –COOH groups on surface cellulosic chains, which would encourage formation of FR-cellulose bonds. Analysis by scanning electron microscopy (SEM/EDX), X-ray photoelectron spectroscopy (XPS) and thermal analysis (TGA) suggested that organophosphorus- and nitrogen- containing flame retarding species in the presence of the silicon-containing molecules such as 3-aminopropyltriethoxy silane (APTS) resulted in formation of FR-S-O-cellulose links, which gave rise to post-water-soaking FR retentions > 10%. Similarly, the organophosphorus FR, diethyl N, N bis (2-hydroxyethyl) aminomethylphosphonate (DBAP), after plasma/UV exposure produced similar percentage retention values possibly via (PO).O.cellulose bond formation, While none of the plasmas/UV-treated, FR-impregnated fabrics showed self-extinction behaviour, although burning rates reduced and significant char formation was evident, it has been shown that FR durability may be increased using plasma/UV treatments.     

棉花苗期烂根病拮抗细菌生理特性及其防病效果的初步研究

通过比较在不同pH,盐分,温度条件下的生长情况,对前期已筛选出的8株棉花苗期烂根病原-立枯丝核菌（Rhizoctonia solani）的拮抗细菌的生理特性进行研究,结果表明：B1070、B158、B323三种拮抗细菌在偏碱,高盐,高温的环境条件下生长情况都较好。温室盆栽试验结果显示,拮抗细菌能明显降低棉花苗期烂根率,其中处理方法Ⅱ效果较好,8株拮抗菌中以B158,B323,B1070的处理效果较好,能有效的防治棉花苗期烂根病。     

膜下滴灌条件下棉花花铃期冠层内的温光特征分析

设计棉花膜下滴灌与普通沟灌2种灌溉方式。在棉花花铃期对冠层内的温度、光照强度、净辐射和消光系数等进行了同步观测。结果表明。在两种灌溉方式下棉花雹层内的温度、光照强度和净辐射日变化曲线均呈单峰线;花铃期初期和后期膜下滴灌棉花冠层温度、净辐射大于常规灌溉。而光照强度和消光系数均小于常规灌溉。     

昌吉州棉花产量影响因素的多元线性回归分析

选取昌吉州降水量和棉花种植面积2个变量，建立多元线性回归模型，对棉花产量影响因素进行分析，为昌吉州棉花生产提供参考.     

不同材料对水源水石油类物质的吸附性能研究

分析了传统吸油材料对饮用水水源中石油类污染物质的去除效能.通过对比市面上常用的4类共8种吸油材料对不同油品的吸附容量发现,饱和吸附容量最大的是棉花,最小的是蛭石;吸附材料PP吸油棉的纯相油类的饱和吸附容量为9.0～13.0 g·g-1,保油性根据油品不同30 min的保油率大致为60％～70％;PP吸油棉对油水混合物中...     

基于核密度估计方法的涤棉混纺纱拉伸断裂声发射信号分析

为了研究涤棉混纺纱拉伸断裂过程中各组分纤维的断裂情况,自主搭建了声发射信号采集装置,分别采集纯涤纶、纯棉和涤棉混纺环锭纱的拉伸断裂声发射信号,采用HHT和ICA分析方法将声发射信号的时域信号转换成频域信号,并提取特征量频率与幅值。基于核密度估计方法对涤棉混纺纱的拉伸过程中涤纶与棉纤维的声发射信号进行分析。结果表明:涤棉混纺纱拉伸过程中其组分纤维的声发射信号可以用特征频谱表征;在拉伸过程的每一个阶段,各种材料声发射特征频谱的不同可以由特征频率的核密度估计表达,并可推测其组分纤维的断裂次序。