Vague集向Fuzzy集转化的一种新方法

提出Vague值向Fuzzy值转化的实用方法的定义。针对文献[6]中的一个Vague值向Fuzzy值转化的均值修正法,提出了加权均值修正法,并证明了这种方法同样是Vague值向Fuzzy转化的一种非常实用的方法。     

钢板剪切边开裂原因分析及改进剪切质量的措施

针对钢板原始剪切边在用户再加工过程中产生边部开裂的问题,采用钢板纵向样进行了实验室模拟试验,分析认为,边部开裂的主要原因是钢板原始剪切面剪切弯钩、毛刺引起的应力集中及再加工工艺不当。剪切间隙、重叠量调整、剪切温度、剪切力、剪切量等因素都影响钢板的剪切质量。结合安钢实际情况,采取新上风雾冷却装置,降低钢板剪切温度,优化剪刃重叠量、水平间隙调整工艺及热态毛边放尺量等措施,提高了钢板剪切质量,减少了质量异议。     

废铝液制备水合硅酸铝及其表面修饰

本研究以工业废铝液作为原料，通过反应合成、老化、洗涤、表面修饰等步骤，制备出水合硅酸铝，对差热、SEM等样品进行了化学分析，得出：修饰后样品粒子可达到纳米量级，各项指标均符合通用企业标准要求；加入Tween-80后，其以吸附形式附在硅酸铝颗粒表面，从而起到修饰作用；本体系中硅酸铝的生长过程分为四个阶段，分别受不同工艺条件的控制。     

纳米二氧化钛光催化剂的研究进展

纳米TiO2作为光催化剂在废水废气净化、抗菌环保等领域有着广泛的应用。本文简要介绍了纳米TiO2的结构、光催化机理、制备、改性以及应用，并展望了其今后的发展方向。     

Heredity of Aluminum Melt by Electric Pulse Modification (Ⅱ)

Heredity of high pure aluminum melts under different pulse electric field was investigated by means of repetitious remelt experiment. The results indicate that the genetic coefficient by measurement of grain size of cast structure has a close relation with pulse voltage. Moreover, the hereditary law accords with the function of In = 1＋ e^-an＋β. The stability of genetic carrier （cluster） comprises in the competition between repetitious cooling and heating impulse and the effect of electric pulse modification.     

湿法炼锌技术改造实践

针对某电解锌厂浸出搅拌效率低、渣含锌高、锌粉消耗高、电耗高等几个问题,介绍了所采取的一系列改造措施。改造后,吨锌蒸汽消耗降低0．57t,吨锌锌粉消耗降低7．93kg,吨锌电耗降低257kW．h,浸出渣含锌降低了4．56%,年创效2950．45万元。     

Effects of Treated Nano-Lanthanum Oxide on the Mechanical and Tribological Properties of PTFE Nanocomposites

The surface of nano-La2O3 was modified. Effects of various amount of treated nano-La2O3 on the mechanical and tribological properties of PTFE were investigated. Mechanisms that contribute to the properties of PTFE composites are also studied. Results indicate that treated nano-La2O3 can increase the mechanical and tribological properties of PTFE simultaneously. With 1wt.% of treated nano-La2O33, the rigidity, tensile strength, notched impact and wear resistance of PTFE nanocomposites were increased by 25.1%,14.1%,20.3% and 36.7% respectively over pure PTFE. The degradation temperature of PTFE was improved by 14℃ by adding only 5% nano-La2O3. The wear resistance reached the highest value when the composite contained 10% treated nano-La2O3, which is about 110 times higher than pure PTFE. Furthermore, treated nano-La2O3 strengthened the bonding between the transfer film and the counterpart surface. A coherent and smooth transfer film on the counterpart surface of PTFE composites can be observed, while pure PTFE can not do.     

Influence of Different Surface Modifications on the Photovoltaic Performance and Dark Current of Dye-Sensitized Solar Cells

The TiO2 nanoporous film photoelectrode, as a crucial component of dye-sensitized solar cells, has been investigated. The photovoltaic properties and the dark current were studied by two surface modification methods. One was to apply a compact layer between the conductive glass substrate and nanoporous TiO2 film. Another was to produce TiO2 nanoparticles among the microstructure by TICl4 treatment. A suitable concentration and number of times for TICl4 treatment were found in our experiment. The dark current is suppressed by surface modifications, leading to a significant improvement in the solar cells performance. An excessive concentration of TICl4 will produce more surface states and introduce a larger dark current reversely. The dye is also regarded as a source of charge recombination in dark to some extent, due to an amount of surface protonations introduced by the interracial link in the conductive glass substrate/dye interface and dye/TiO2 interface.     

环氧树脂新型有机硅改性剂

研究了含酚羟基有机烷氧基硅烷及3,3',3"-三羟基苯氧基硅烷三缩水甘油醚两种新型有机硅改性剂对双酚F环氧树脂力学性能及热性能的影响.研究结果表明,两种改性剂均可有效提高环氧树脂浇铸体的韧性,提高其抗开裂指数,降低线胀系数.3,3',3"-三羟基苯氧基硅烷三缩水甘油醚改性剂在提高环氧树脂的力学性能的同时,保持固化物较高的玻璃化温度, 并可降低双酚系环氧树脂基体的粘度.     

纳米碳酸钙湿法表面改性的研究

利用季铵型阳离子表面活性剂对纳米碳酸钙进行了湿法表面改性。对湿法改性前后的纳米碳酸钙进行了红外光谱(FTIR)、X射线衍射(XRD)及透射电镜(TEM)分析。采用Zeta电位、分散体系浊度、沉降体积、表观粘度等分析方法对改性前后纳米碳酸钙在水中的界面行为进行评价。另外,通过激光粒度仪对改性前后纳米碳酸钙分散液的粒度分布进行了测定。实验结果表明,经湿法表面改性后,纳米碳酸钙在水中的润湿性及分散性有很大改善。