PVDF中空纤维滤膜的形态结构

用Ｌ－Ｓ相转换法制备了聚偏氟乙烯（ＰＶＤＦ）中空纤维不对称滤膜。铸膜液由聚合物、溶剂和添加剂组成。用电子显微镜（ＳＥＭ）考察了聚合物浓度、添加剂用量及种类对膜形态结构的影响。实验结果表明，聚合物浓度对膜形态结构有显著影响，当铸膜液中聚合物浓度较低时，无论用什么种类添加剂，都能形成大、且多的孔，但孔的形状随添加剂不同而异。当恒定聚合物浓度时，添加剂的用量对膜形态结构有很大的影响，但孔的大小及多少与添加剂含量的多少不成正比。     

一类广义耦合的KdV方程组的整体吸引子

利用Sobolev插值不等式和关于时间t的先验估计，研究了一类广义耦合的具有周期初值问题的KdV方程，得到了整体解和整体吸引子的存在性。     

糠醛注水——润滑油糠醛精制装置的节能途径

介绍了用水稀释糠醛使润滑油糠醛精制装置节能的途径。通过注水——糠醛－水溶液（含水９５％左右），可降低糠醛的气化沸点，增大换热系统的传热温差，改善换热效果，更多地回收能量，达到节约能源的目的。     

RADIATION FIELD FROM A RECTANGULAR PLAQUE SOURCE FOR RADIATION PROCESSING

Evaluation of the Hubbell integral for an omnidirectional detector response to a rectangular plaque gamma emitting radiation source using a different numerical computation method on a personal computer was made. For a plaque consisting of several strip gamma emitters, exposure rates at different positions above the source were calculated using 'exact' evaluation and an approximate method. Optimization method is used to find source activity of each strip, so as to acquire desirable dose uniformity of the irradiated products. In uses of the Hubbell integral, by introducing appropriate programming, computation time can be saved.     

Morphology and structure of poly(p-phenylene terephthalamide) crystallized from dilute organic solution

The high-temperature crystallization of poly(p-phenylene terephthalamide) (PPTA) from dilute organic solutions was achieved through the introduction of a non-solvent, or precipitating agent, at the desired crystallization temperature. The morphology and crystal structure were examined for crystals produced from PPTA polymer with two different molecular weights (M_w = 46000 and 3430 g mol⁻¹), using transmission electron microscopy. For the high-molecular-weight polymer, ribbon-like crystals were produced, while the low-molecular-weight polymer yielded small needles or platelets. In both cases, electron diffraction showed that the Northolt allomorph was obtained. For the high-molecular-weight polymer, the molecular axes were parallel to the ribbon axes in a chain-extended type structure. A hypothesis for the orientation of the low-molecular-weight PPTA in the small platelets, is also given.     

高岭土生产硫酸铝及沉淀法除铁的研究

对工业品硫酸铝的制备及沉淀法除铁的工艺进行了研究。实验结果表明，硫酸原料的质量分数可提高至６３％，用高锰酸钾作为除铁剂可除去产品中４５％～５０％的铁。     

蛇纹石矿的开发利用现状及发展趋势

我国拥有丰富的蛇纹石矿资源，其中有许多在近些年已得到较好的开发利用。综述了蛇纹石矿的开发研究现状，指出蛇纹石矿作为耐火材料及Mg、Ni及Pd等有价金属的重要矿物来源，应加强选矿及综合利用方面的研究。     

聚合磷硫酸铁制备及净化含铅废水的试验研究

以钛白粉副产品绿矾为主要原料,氯酸钠作氧化剂,调节亚铁离子与硫酸根离子之间摩尔比后微波作用仅几分钟就能合成出液体聚合硫酸铁,并在此基础上加入磷酸根离子可得到所需絮凝剂--聚合磷硫酸铁;试验了该絮凝剂最佳合成工艺条件;采用该试剂净化含铅废水,取得了较好去除效果,并且探讨了除铅最佳试验条件.     

Organic Electroluminescent Thin Film Using 8—hydroxyquinoline Zinc as Emitting Layer

Organic electroluminescent thin film using Znq2(Znq2) as the emitting layer material with structure of glass/ITO/Znq2/Al(cell) was fabricated.The V-I curve ,V-B curve and electroluminescent spectra of the cell were measured.Meanwhile the fluorescent spectra, excited spectra and absorption spectra of Znq2 with power and film states were also measured.