一种新型含硅拒水剂的合成与应用

以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、γ-甲基丙烯酰氧丙基三(三甲基硅氧烷)硅烷(TRIS)等为主要原料,采用半连续乳液聚合法,合成了具有核壳结构乳胶粒子的阳离子型含硅拒水剂。通过纳米粒度-Zeta电位分析仪、接触角(CA)、红外光谱(FT-IR)、透射电镜(TEM)及热重分析(TG)等手段研究了粒子的核壳形貌结构和固化后树脂的热稳定性等性能,然后考察了不同硅含量和不同浓度拒水剂对织物拒水性的影响。结果表明,有机硅单体参与了聚合,所合成乳胶粒具有明显的核壳结构,平均粒径为100nm。当硅含量最低为2%(占壳单体的质量分数)、有效浓度为2%,整理后的织物对水的接触角可达到135.5°。     

Empirical approach to develop a multilayer icebonded abrasive polishing tool for ultrafine finishing of Ti-6Al-4V alloy

This paper covers the development of a multilayer icebonded abrasive polishing (IBAP) tool for multistage polishing of Ti-6Al-4V alloy specimens based on a systematic study that determined the number of layers, thickness of each layer, and the type, size and concentration of abrasives in each layer. Based on this study, a three-layered IBAP tool with the bottom layer consisting of soft aluminum oxide abrasives of 3?µm size with 5% concentration, the middle layer with moderately hard silicon carbide abrasives of 8?µm size with 10% concentration and the top layer with hard boron carbide abrasives of 15?µm size with 30% concentration was formulated for ultrafine finishing of Ti-6Al-4V alloy specimen in a single setup. The performance of the three-layered IBAP tool assessed in terms of finish and morphology over the work surface showed 81% improvement in surface finish, showing its effectiveness over a single-layered IBAP tool. Polishing studies have clearly demonstrated the generation of ultrafine surfaces, yielding a finish of 37?nm while the morphological studies on the polished surface have shown a nearly scratch-free surface on the Ti-6Al-4V alloy.     

柠檬酸整理对柞丝织物的免烫效果及其工艺条件

实验研究柠檬酸对柞丝织物进行免烫整理的效果及影响因素，并通过试验确定柠檬酸组合整理剂的配比。整理后的柞丝织物的免烫性能可以明显提高。而织物保强率可达85％以上。     

用BTCA/ACT复合体系改善棉织物防皱整理后的强力

针对单独使用BTCA或ACT作为防皱整理剂存在的不足，提出用BTCA和ACT组成棉织物的复合防故整理体系。通过实验得出，ACT在该复合体系中不仅可通过其热分解的产物与纤维素交联，催化BTCA与纤维素交联，还能调节整理液的pH值，可改善处理后织物的强力。     

棉织物整理中硼,磷阻燃协同效应的研究

通过对有机棚和有机磷阻燃剂进行复配，结果能产生较好的协同效应．将棚、磷元素以最佳协同配比引入同一分子结构中合成了阻燃剂FRPB1和FRPB2，提高了硼阻燃剂的耐水解性，应用于纯棉织物的阻燃整理中，比单独复配使用具有更好的阻燃性能．     

精铰挤光复合铰刀在气缸盖加工中的应用

介绍了一种精铰挤光复合铰刀，它可以一次完成三个工序的工作，从而达到提高加工精度，节省劳动时间和操作工人的目的。     

纯棉阻燃织物中磷—氮协同效应初探

通过一种国产纯棉阻燃剂，对阻燃织物中磷－氮协同效应的一些规律进行了初步探讨，认为并非所有的含氮化合物都有磷－氮协同效应。对有协合能力的含氮化合物来讲，也并非其用量越多协同效应越 大。     

抗菌导电真丝纤维的研究

用铜化合物和合硫还原剂反应制备抗菌导电真丝纤维。研究结果表明：经处理后的真丝纤维对大肠杆菌、金黄色葡萄球菌、白色念珠菌的抑菌率达98％；体积比电阻ρv由9．2×109Ω·cm下降到57．6Ω·cm。经X射线衍射及扫描电镜分析证明：真丝纤维表面覆盖着连续均匀分布的CUS抗菌导电层。     

纳米结构陶瓷涂层的外圆磨削力以及磨削表面精度的实验研究

使用功率计监测磨削加工的能量消耗，探讨了纳米结构陶瓷涂层的外圆磨削过程；对纳米陶瓷涂层和传统陶瓷涂层在磨削力和磨削表面精度方面进行了比较．磨削实验使用了外圆磨床和陶瓷结合剂金刚石砂轮．通过测量主轴功率获得切向磨削力，讨论了加工参数，如切深、进给率以及砂轮粒度对切向磨削力的影响．还对磨削后的涂层表面用粗糙度仪和扫描电镜进行了评估，揭示了表面粗糙度与加工参数的关系．     

Modeling and Optimization of Machining Process in Discontinuously Reinforced Aluminium Matrix Composites

This article presents development of an Artificial Neural Networks (ANN) based model for the prediction of surface roughness during machining of composite material using Back Propagation algorithm. Statistically designed experiments based on Taguchi method were carried out on machining of Al/SiCp composite material. The experimentation helped generate a knowledge base for the ANN system and understand the relative importance of process, tool and work material dependent parameters on the roughness of surface generated during machining. The ANN model trained using the experimental data was found to predict the surface roughness with fair accuracy. An optimization approach was also proposed to obtain optimal cutting conditions that yield the desired surface roughness while maximizing the metal removal rate.