电磁搅拌对ZA-27合金凝固组织的影响

研究了保温电磁搅拌和间断性电磁搅拌对ZA27合金组织的影响，在保温凝固过程中进行电磁搅拌时，晶粒细化效果更明显。保湿搅拌温度存在搅拌效果最理想的临界值Tc。间断性电磁搅拌使得枝晶显著粒化，晶粒分布更加均匀。     

磁化水配料对TiO2压敏陶瓷电性能和微观结构的影响

研究了使用磁化水配料对TiO2压敏陶瓷电性能和微观结构的影响。电性能测量及SEM和XRD微观结构分析结果表明：磁化水配料制备的TiO2压敏电阻具有较低的压敏电压和较高的非线性指数α。材料的主晶相为金红石相，由Ce,Si,Ti组成的Perrierite第二相均匀分布在晶界区域。因此，采用磁化水配料可以改善材料的工艺性能和陶瓷烧结体的微观结构，从而提高元件的电性能。     

Synthesis of nano Sb-encapsulated pyrolytic polyacrylonitrile composite for anode material in lithium secondary batteries

A novel process was proposed to synthesize nano Sb-encapsulated pyrolytic polyacrylonitrile composite for anode material in lithium secondary batteries. The preparation started with the dissolution of SbCl₃ and polyacrylonitrile (PAN) in dimethylformamide (DMF) solution, followed by the addition of KBH₄ to reduce Sb³⁺ in the solution. The Sb composite was obtained by pyrolysis of the Sb/PAN mixture that precipitated out when the DMF solution was added by plentiful water. The TEM analysis showed that about 100-200 nm Sb particles were embedded by the pyrolyzed PAN, which provided a conductive matrix to relieve the morphological change of Sb during electrochemical cycling. As-prepared composite presented good cycleability for lithium storage. The proposed process paves an effective way to prepare high performance alloy based composite anode materials for high performance lithium-ion batteries.     

Co－Mo／MgO－Al_2O_3一氧化碳耐硫变换催化剂失活原因的探讨

采用程序升温硫化（ＴＰＳ）技术，微反—色谱法（ＭＲＣ）、扫描电镜、透射电镜和其它分析测试手段，对工业应用前后的Ｃｏ－Ｍｏ系耐硫变换催化剂Ｋ８－１１进行了分析，从而对其失活原因进行了分析和讨论     

苯甲酸加氢催化剂Pd/C抗中毒方法研究及应用

研究了苯甲酸加氢过程中Pd/C催化剂的失活原因，针对CO引起Pd/C活性降低，开发了SRNA－5助催化剂，有效消除了反应中生成的CO对Pd/C催化剂活性的影响。并在石家庄化纤公司完成了工业试验，工业试验表明，在不改变原工业流程的基础上，通过向苯甲酸加氢工业装置中加入SRNA－5助剂，有效提高Pd/C催化剂活性，该厂每年减少催化剂直接费用1500万元。     

Influence of organophilic clay and preparation methods on EVA/montmorillonite nanocomposites

Ethylene‐vinyl acetate copolymer (EVA)/montmorillonite MMT nanocomposites have been prepared by using different methods: one is from the organophilic montmorillonite (OMT) and the other is from the pristine MMT and reactive compatibilizer hexadecyl trimethyl ammonium bromide (C16). In this study, different kneaders were used (twin‐screw extruder and twin‐roll mill) to prepare nanocomposites. The nanocomposite structures are evidenced by the X‐ray diffraction (XRD) and high‐resolution electronic microscope (HREM). The thermal properties of the nanocomposites were investigated by thermogravimetric analysis (TGA). Moreover, the tensile tests were carried out with a Universal testing machine DCS‐5000. It is shown that different methods and organophilic montmorillonite have influence on EVA/MMT nanocomposites.© 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2416–2421, 2004     

高速逆流色谱法分离β-谷甾醇和菜油甾醇的研究

利用高速逆流色谱法 ,并选用V(庚烷 )∶V(乙腈 )∶V(乙酸乙酯 ) =5∶5∶1溶剂体系 ,成功地分离了混合植物甾醇标准品中的 β 谷甾醇和菜油甾醇。经过HPLC检测 ,一次性分离可得到质量分数为 97%的 β 谷甾醇和质量分数为 91%的菜油甾醇产品 ,收率分别可达 5 6 %和 5 0 %。该方法简便、重现性好 ,可作为高纯度 β 谷甾醇和菜油甾醇标准品的制备分离方法     

新型无机抗菌剂的研究现状和展望

介绍了无机抗菌剂的国内外发展现状，评述了各种无机抗菌剂的结构特点及抗菌机理，介绍了无机抗菌剂在陶瓷、塑料、纤维等方面的应用，同时探讨了无机抗菌剂存在的问题及发展趋势。     

透明聚烯烃用成核剂合成的研究

介绍了聚烯烃成核剂合成反应所用助剂选择,反应条件的确立,利用均匀设计实现最佳配比实验,对不同侧基苯甲醛缩合反应进行了研究。     

墙地砖边缘检测中的小波去噪

在墙地砖的边缘检测过程中,噪声的引入是不可避免的,有效地消除噪声而不影响检测结果是检测过程中需要解决的关键问题。本文采用了小波去噪方法—对图像进行去噪后再进行边缘检测的方法,其检测结果较好地满足了检测要求。