聚丙烯纤维水相异相接枝马来酸酐

本文研究了用水相异相法在聚丙烯纤维上接枝马来酸酐，用称重法测定接枝率，结果认为，随着反应中使用的马来酸酐和过硫酸铵浓度的提高，所得产物的接枝率显著提高，而反应温度和反应时间的影响则是开始随温度升高和时间延长接枝率上升，达到最大值后下降，在本实验中，各种反应条件下，都可以得到超过1．8％的接枝率。     

铵盐体系香波泡沫性能的研究

研究了两种铵盐型阴离子表面活性剂与烷基单乙醇酰胺、烷基二乙醇酰胺等复配体系在不同水硬度条件下的泡沫性能 ;考察了乳化硅油、羊毛脂、十八醇、珠光剂、香精、阳离子表面活性剂及聚合阳离子化合物等添加剂在香波体系中不同水硬度条件下对发泡性能的影响。实验条件下所有体系的稳泡性均较好 ,LSA与AESA复配后泡沫力增大 ,其中AE SA含量需 <1 0 % ;含烷基单乙醇酰胺香波体系的泡沫性能优于含烷基二乙醇酰胺的 ;羊毛脂和乳化硅油对香波泡沫的影响较大 ,而其它添加剂对香波泡沫的影响不大。     

纳米陶瓷及其纳米复相陶瓷的研究现状

综述了纳米陶瓷和纳米复相陶瓷的的研究现状．探讨了纳米陶瓷的力学性能及其热喷涂纳米陶瓷涂层存在的问题．分析了纳米复相陶瓷的增韧机理，为纳米陶瓷的研究和应用提供了理论依据。     

Preparation and characterization of porous carbon beads and their application in dispersing small metal crystallites

Porous carbon beads were prepared by the pyrolysis of poly(vinylidene chloride) beads that were synthesized by suspension polymerization. After prolysis treatment at 180–300 °C under argon stream, the polymeric beads were further carbonized at 1000 °C for 3 h under argon stream to acquire porous carbon beads, of which the specific surface area was about 1000 m²/g, and pore size was mainly in the width range of 0.8–1.2 nm. The carbon structure and surface chemical composition characterized by X-ray diffraction and X-ray photoelectron spectroscopy, depended on the preparation temperature and the relations between them were examined. The characterization of the carbon beads by scanning electron microscopy, atomic force microscopy presented the morphological structure of the carbon beads surface and a global view of pores. The dispersion of nickel crystallites on the carbon beads surface was characterized by electron microprobe analysis. This study reveals that uniform surface morphological structure leads to the fine dispersion of metal crystallites.     

固相法低度氯化聚乙烯耐老化性能的研究

用室温对折断裂试验,研究固相法低度氯化聚乙烯老化性能,当氯含量约为7.4％时,其老化时间发生突跃,老化时间发生突跃时,氯含量与试样的氯化温度和老化温度有关.     

Local orders,lattice distortions,and electronic structure dominated mechanical properties of (ZrHfTaM1M2)C (M = Nb,Ti, V)

High-entropy carbides (HECs) are regarded as potential candidate structural materials with attractive mechanical properties due to their ultra-high hardness. It is essential to reveal the atomic and electronic basis for strengthening mechanism in order to develop the advanced HECs. In the present work, C (M = Nb, Ti, V) are selected as case studies. The effects of transition metals (M) on the lattice parameters, bulk modulus, enthalpy of formation, electron work function (EWF), and bonding morphology/strength of HECs are comprehensively studied by first-principles calculations. It is found that the lattice parameters, equilibrium volumes, and bulk modulus of HECs are improved with the increase of M atomic volumes. The atomic-size differences among various groups of elements not only result in the lattice mismatch/distortion but also contribute to the formation of weak spots. In the view of bonding charge density, the electron redistributions caused by the coupling effect of the lattice distortion and valance electron differences can be revealed obviously, which identify the different bonding strength. Moreover, in terms of EWF, the proposed power-law-scaled hardness of HECs is validated and matches well with those reported theoretical and experimental results, providing a strategy to design advanced HECs with excellent mechanical properties.     

基于RFID的虚拟标签算法研究与改进

针对室内定位算法VIRE的定位精度,特别是邻近边界目标的定位精度较低的问题,以RFID标签定位为研究基础,从改变VIRE算法中虚拟标签的插值方式和在边界上加入虚拟标签两个方面进行研究和改进。使用拉格朗日插值代替VIRE算法中的线性插值方式,使虚拟标签的数据更加接近实际环境值;在边界上加入虚拟参考标签能增加已知标签数,防止在计算待定位标签坐标时引入误差标签。实验结果表明,标签定位精度有了明显提高,整体能提高了35%,邻近边界标签定位精度提高较大,可达到50%以上。     

Automatic inpainting by removing fence-like structures in RGBD images

Recent inpainting techniques usually require human interactions which are labor intensive and dependent on the user experiences. In this paper, we introduce an automatic inpainting technique to remove undesired fence-like structures from images. Specifically, the proposed technique works on the RGBD images which have recently become cheaper and easier to obtain using the Microsoft Kinect. The basic idea is to segment and remove the undesired fence-like structures by using both depth and color information, and then adapt an existing inpainting algorithm to fill the holes resulting from the structure removal. We found that it is difficult to achieve a satisfactory segmentation of such structures by only using the depth channel. In this paper, we use the depth information to help identify a set of foreground and background strokes, with which we apply a graph-cut algorithm on the color channels to obtain a more accurate segmentation for inpainting. We demonstrate the effectiveness of the proposed technique by experiments on a set of Kinect images.     

Effect of the processing molding temperature on the crystalline structure and properties of acrylonitrile‐butadiene rubber/trinylon thermoplastic vulcanizates

The effect of the processing molding temperature on the properties and crystalline structure of acrylonitile‐butadiene rubber (NBR)/nylon 6,66,1010 (trinylon) thermoplastic vulcanizates (TPV) was studied. With decreasing molding temperature, the stress at 100% and elongation at break of TPV changed slightly, and the solvent resistance of TPV improved. The best conditions for processing molding were 170°C and 12 min. The crystalline structure of the nylon continuous phase in TPV was investigated by X‐ray diffraction, polarized optical microscopy, and differential scanning calorimetry. The results show that the crystalline structure of the nylon phase in TPV was more perfect/orderly and formed α‐crystalline structure at a processing molding temperature of 170°C. Therefore, the oil resistance of NBR/trinylon TPV clearly improved. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 1374–1379, 2006     

隧道窑烟气废热回收利用技术

本文主要介绍了该项目在湖南省铜官陶瓷总公司推广应用实例，论述本技术改革传统隧道窑预热带及冷却带的结构．开发利用隧道密的烟气度热．进一步挖掘冷却带余热的潜力．使隧道窑余热利用率由３０％左右提高到５０％以上。用来烘干陶瓷半成品、石膏模、匣体取代锅炉蒸汽干燥，节能显著。