溶聚丁苯橡胶聚合溶液粘度的研究

研究了（乙二醇二甲醚、二乙二醇二甲醚）－正丁基锂－抽余油体系地溶聚乙苯橡胶不同聚合时间聚合溶液粘度的变化，发现聚合溶粘度与活性种的活性有关，高温严重破坏活性种的活性，计节剂量是杀死活性种活性的另一因素。同时考察了不同苯乙烯／丁二烯（S／B）体系，正丁基锂引发剂用量对聚合粘影响规律，发现S／B越大，聚合粘度越小，S／B越小，聚合粘度越大，引发剂用量减少，聚合液粘度增大。     

In—situ Composite Based on Poly （ethylene terephthalate）,Polyamide and Polyethylene with Microfibres Formed through Extrusion and Hot Stretching

In-situ composites based on dispersed poly (ethylene terephthalate) (PET) or polyamide (PA),and continuous Polyethylene (PE) were prepared through a single screw extruder of Haake rheometer system with a rod-die relatively small in diameter.The extrudate was drawn at a drawing ratio of 3.1,and then quickly cooled in cold water.The specimens were obtained by injection molding at processing temperatures less than 190℃，far below the melting temperature of PET (265℃) and PA (230℃),which can maintain the solid state of PET and PA microfiber phase in the composites.Morphological observation with scanning electron microscopy (SEM) indicated that PET and PA can more or less form in-situ microfibers at compositions studied (0-20 wt pct PET or PA),and especially,PET and PA were almost deformed into fibers at the concentration of 15wt pct.Eensile strength and especially.PET and PA were almost deformed into fibers at the concentration of 15wt pct.Tensile strength and modulus of the blends reinforced by PET or PA microfibers showed to be increased from the tensile test results.The most noticeable improvement of the tensile properties occurred at 15wt pct of PET in PET/PE system,corresponding to the highest microfiber content,where the tensile strength reached 32.5 MPa,whereas only 19.5 MPa for the pure PE.     

氮肥工业与21世纪的生物能源

介绍近年来美国生物能源的开发进展情况及其先进的支撑系统，提出如何使我国氮肥工业在发展我国生物能源中起促进作用。     

水性聚氨酯电导率与聚沉值的研究

研究了软（硬）段含羧基的水性阴离子纳米聚氨酯体系的n(NCO)/n(OH)比值，COOH的质量分类，反离子各类，合成方法与电导率关系及产生的原因；探讨了该体系的n(NCO)/n(OH)值，COOH的质量分数，合成方法与临界聚沉值（Cc.c)的关系和规律。并分析，比较了软（硬）段含羧基的水性阴离子聚氨酯体系电导率与Cc.c二者关系，得出了随COOH的质量分数升高，二者变化相同，随n(NCO)/n(OH)比值升高,二者变化相反的结论。     

随钻测井自动分层取值方法研究

以准噶尔地莫北油田为例，在综合分析比较现有的随钻测井曲线各种分层取值方法的基础上，采用极值方差聚类法实现测井相分析的自动分层取值，更加突出了层间非均质差异性和层内均一性。通过对莫北油田莫005井区砂泥岩剖面的数字化测井曲线自动分层取值处理，其结果与实际的岩性剖面手工分层十分吻合。为该区的自动测井相分析（随钻测井自动分层取值）建立了一套有效的分层取值方法。     

第一,二临界角随环境温度的变化

本文通过有机玻璃中的纵波声速随温度的变化来计算第一、二临界角随环境温度的变化。结果表明,随着环境温度的降低,第一、二临界角均明显增大。