有机硅氧烷对硅橡胶网络的补强作用

本文通过硅氧烷水解的途径对乙烯基封端的聚二甲基硅氧烷(PDMS)在交联前后导入不变形或可变形的补强填充剂的新方法进行了研究,并此较了它们的补强性能。实验结果表明:交联后的 PDMS 网络,用四乙氧基硅烷(TEOS)水解得到的二氧化硅粒子具有最佳的补强性能,这种方法要比其他硅氧烷水解获得的补强效应大得多。实验也指出:液体硅橡胶在交联前引入的二氧化硅补强剂是完全可能的。它能形成一种稳定的橡胶一填料分散体系,并有相当的补强作用。但它的补强效应不如交联后引入补强剂的方法好。     

信息安全标准化的探讨

信息化的安全标准是整个安全体系的不可或缺的一部分,占主要地位,这也是政府部门便于统一控制的必要的手段.本文是在信息化安全标准的整体之上,更好地说明安全标准的一个发展趋势.     

一维驱动二维跟踪太阳自动跟踪系统设计

本文从对太阳方位变化规律的分析计算入手,利用天文时间来提供准确可靠的自动跟踪信号,并采用一维驱动实现二维精密跟踪的新技术。依此所设计的新型太阳能聚光器自动跟踪系统与同类产品相比,具有准确可靠、抗干扰能力强、成本低、方便实用等特点;这对于通过聚光方式推动太阳能应用具有重大的现实意义。     

基于AHP-模糊综合评价的海上风机基础状态评估

为掌握服役时期的海上风机基础状态并对海上风机基础状态进行评估,提出一套结合故障树分析（Fault Tree Analysis,FTA）法、层次分析（Analytic Hierarchy Process,AHP）法和模糊综合评价法的海上风机基础状态评价模型。针对导管架式海上风机基础,考虑海洋腐蚀和海底冲刷,通过p-y曲线法模拟桩-土相互作用,在风浪流载荷的作用下进行动力响应分析,采用故障树对其失效模式进行分析,确定评价指标,构造判断矩阵计算指标权重,运用模糊综合评价法对各指标和整体进行评价。该模型结合各评价方法的优点,使评价结果更有说服力,可为海上风电场运行维护管理提供技术参考。     

BM50型风扫磨机主齿轮失效分析

BM50型大力神风扫磨机在正常操作务件下主齿轮(材质为4340钢)出现早期失效，一齿断裂脱落，另有17齿开裂。采用化学成分分析、金相检验、扫描电镜观察以覆硬度测试方法，对断裂齿轮进行了失效分析，结果表明，失效齿轮属于疲劳断裂；引起断裂的直接原因是位于齿轮啮合面硬化层底部的堆积夹杂物，所用材料存在严重的冶金质量缺陷。     

Antireflection and band gap extension effects of ZnO nanocrystalline films grown on ITO-coated glasses by low temperature process

Zinc oxide (ZnO) nanocrystalline films coated on indium tin oxides (ITO, 90:10 wt%) glasses were prepared by low temperature process. The thin films were composed of uniform nanoparticles with average diameter around 8.4 nm. All samples exhibited excellent optical antireflective phenomena, and the maximum transmission reached 92.8% for the sample spin coated at 1500 rpm at 453 nm, improved by 21.5%. The antireflective results were explained by the coherence theory. And the antireflective effects were induced by the ITO and ZnO films. The calculated thicknesses of the ZnO films agreed well with the experimental results. The theoretical calculated band gap from the average diameter of ZnO nanoparticles was also well consistent with the experimental ones obtained from the optical transmission spectra. This result was promising for applications in organic solar cells.     

论包装设计生态化与民族文化

论述了包装生态学与产品之间以及人与自然的关系.从民族文化历史、人文以及风土人情的角度,分析比较国内外各民族文化的特色,从而使中国的设计水平能达到天人合一的境界寻找理论依据.     

神经控制（Ⅰ）─—神经元控制

介绍了作者在神经控制──神经元控制方面的研究成果，主要包括面向控制的神经元模型、神经元控制系统、神经元无模型控制方法和应用实例。     

脲醛树脂基高分子材料改性研究

本文简要介绍了脲醛树脂基高分子材料的基本生产工艺流程,探索玻璃纤维、纳米蒙脱土、丁腈橡胶粉以及玉米淀粉种类和用量对脲醛树脂基高分子材料耐电击穿性能的影响。实验结果表明,选用玻璃纤维作为增强剂对脲醛树脂基高分子材料的耐电击穿强度影响最为明显,纳米蒙脱土次之,玉米淀粉的加入对脲醛树脂基高分子材料的耐电击穿强度影响不明显,而丁腈橡胶的加入对脲醛树脂基高分子材料的耐电击穿强度有明显的下降趋势,改性后的脲醛树脂基高分子材料的耐电击穿强度能超过17KV/mm,最佳耐压时间在100s以上。     

Creation of Nonspherical Microparticles through Osmosis‐Driven Arrested Coalescence of Microfluidic Emulsions

Droplet‐based microfluidics enable the production of emulsions and microparticles with spherical shapes, but the high‐throughput fabrication of nonspherical emulsions and microparticles still remains challenging because interfacial tension plays a dominant role during preparation. Herein, ionic liquids (ILs) containing salts, which possess sufficient osmotic pressure to realize water transport and phase separation, are introduced as inner cores of oil‐in‐oil‐in‐water double emulsions and it is shown that nonspherical emulsions can be constructed by osmosis‐driven arrested coalescence of inner cores. Subsequently, ultraviolet polymerization of the nonspherical emulsions leads to nonspherical microparticles. By tailoring the number, composition, and size of inner cores as well as coalescence time, a variety of nonspherical shapes such as dumbbell, rod, spindle, snowman, tumbler, three‐pointed star, triangle, and scalene triangle are created. Importantly, benefitting from excellent solvency of ILs, this system can serve as a general platform to produce nonspherical microparticles made from different materials. Moreover, by controlling the osmotic pressure, programmed coalescence of inner cores in double emulsions is realizable, which indicates the potential to build microreactors. Thus, a simple and high‐throughput strategy to create nonspherical microparticles with arrested coalescence shapes is developed for the first time and can be further used to construct novel materials and microreactors.