四元核壳结构LIPN的合成

研究了乳化剂、交联剂与引发剂用量对（ＰＳ－ＰＭＭＡ）／（ＰＢＡ－ＰＡＡ）核壳结构ＬＩＰＮ乳液性能及膜性能的影响；探讨了乳化剂用量为３．０％时，乳液凝聚率、化学稳定性、转化率及粘度变化发生转折的原因；用Ｎｉｅｌｓｅｎ公式求得交联剂用量为０．４％时，交联点间链平均分子量Ｍ≈３．８×１０３。     

双马来酰亚胺作EPDM硫化胶的结构稳定剂

用热空气老化系数、压缩永久变形和热失重（ＴＧ）表征ＥＰＤＭ 硫化胶的热稳定性。结果表明，未加Ｎ，Ｎ′－间苯撑双马来酰亚胺（ＭＰＢＭ）的ＥＰＤＭ 硫化胶经１２０ ℃×７２ ｈ 和１５０ ℃×７２ ｈ 热空气老化后，伸长率的老化系数分别为０．７０ 和０．４２，而加入２ ｐｈｒ的ＭＰＢＭ 后，则分别为０．７８ 和０．６０，１２０ ℃×２２ ｈ 和１５０ ℃×２２ ｈ 的压缩永久变形，未加ＭＰＢＭ 时分别是７３％ 和８４．９％ ，而加入２ ｐｈｒ的ＭＰＢＭ 后则为５９．６％ 和７５％ ，增加ＭＰＢＭ 用量，压缩永久变形率进一步降低。非等温热失重分析表明，起始失重温度、失重终止温度都因加入２ ｐｈｒＭＰＢＭ 而向高温方向移动了４ ℃左右，加入５ ｐｈｒＭＰＢＭ 则提高了近１０ ℃，表明ＭＰＢＭ 不仅可作ＥＰＤＭ 的交联助剂，同时是老化过程中的结构稳定剂。     

聚丙烯塑料的强附着油漆物性参数及附着性能研究

研究了影响以改性乙丙梳状多元共聚为主树脂的ＰＰ强附着油漆附着百分数的３个因素是主树脂的分子量及其分布和氯化长链烷基苯与有机硅复合的表面活性剂的用量，在大量的试验基础上总结出其最佳范围分别为３×１０４～５．５×１０４、２．５～３．５和１．０％～２．５％（质量）的添加量。由此合成了附着力恒为零级，耐温变性能达到－４０℃～７０℃的ＰＰ强附着力油漆。     

电镀

２０００１２２２ 铝材复合表面处理技术——Ｃｈｕ Ｓ２．Ｊ ＥｌｅｃｔｒｏｃｈｅｍｉｃａｌＳｏｃ,１９９９,１４６（２）：５３７（英文） 研究了铝材阳极氧化、激光辐照和化学镀Ｎｉ－Ｐ复合表面处理技术,铝材阳极氧化后形成多孔氧化膜,然后浸入含Ｐｂ２＋的Ｎｉ２＋／Ｈ２ＰＯ２－溶液中进行化学镀Ｎｉ－Ｐ合金,并用ＹＡＧ脉冲激光器照射,以去除氧化膜。激光照射区进行局部化学沉积Ｎｉ－Ｐ合金［含９．５％（ａｔ）～１１．２％（ａｔ）Ｐ］,溶液温度＞８５℃,Ｃｐｂ２＋为０．３×１０－４％－２．４ × １０－４％。分析了…     

超微粉石墨层间化合物CuCl_2-NiCl_2-GICs合成及电学性能

常规的ＧＩＣｓ合成原料均采用合成石墨或者粒度较粗的天然石墨，这里采用超微粉石墨作原料，进行受主金属氯化物ＣｕＣｌ２－ＮｉＣｌ２－ＧＩＣ的合成研究。使用山东南墅石墨（３０００目）、Ｃｕ－Ｃｌ２和ＮｉＣｌ２（５ｎ：０．５∶０．５摩尔比），在５２８℃、真空度１０．３Ｐａ条件下，得到超微粉的ＣｕＣｌ２－ＮｉＣｌ２－ＧＩＣｓ，ＳＴＥＭ单原子能谱扫描结果显示出铜离子和镍离子分布基本均匀。合成的１，２，３和４阶ＧＩＣｓ的电导率分别为１．５３６×１０４，１．６３８×１０４，３．７７３×１０４，和５．７２７×１０４。而石墨原料的电导率为１．８５１×１０４，从整体来看合成的ＧＩＣｓ的电导率是石墨原料的０．８－３倍。对比合成的ＧＩＣｓ的电导率发现，阶数不同，电导率不同，并且随着阶数的升高，电导率增大。     

PAA—PSF交联复合膜的制备及对低浓度有机醇水溶液反渗透分离性…

进行了ＰＡＡ－ＰＳＦ交联复合膜的制备，研究了交联剂、添加剂对膜性能的影响，并通过扫描电观察了膜的断面结构，研究了ＰＡＡ＿ＰＳＦ交联复合地低浓度有机醇类水溶液反渗透分离性能、发现对于１０００×１０＾－６乙醇水溶液截留率达到６６．２％，透过流束可达０．９×１０＾－６（ｍ＾３．ｍ＾－２．ｓ＾－１），随醇的分子量的增加，截留率不断上升，对戊醇的截留率达９４．３％，而透过流速则保持相对稳定，对不同结构醇类的     

PAA-PSF交联复合膜的制备及对低浓度有机醇水溶液反渗透分离性能研究

进行了ＰＡＡ（ＰｏｌｙａｃｒｙｌｉｃＡｃｉｄ）－ＰＳＦ（Ｐｏｌｙｓｕｌｆｏｎｅ）交联复合膜的制备，研究了交联剂、添加剂对膜性能的影响，并通过扫描电镜观察了膜的断面结构．研究了ＰＡＡ－ＰＳＦ交联复合膜对低浓度有机醇类水溶液反渗透分离性能．发现对于１０００×１０－６乙醇水溶液截留率达到６６．２％，透过流束可达０．９×１０－６（ｍ３·ｍ－２·ｓ－１）．随醇的分子量的增加，截留率不断上升，对戊醇的截留率达９４．３％，而透过流束则保持相对稳定．对不同结构醇类的分离性能研究表明，截留率存在有：ｔｅｒｔ－＞ｓｅｃ－＞ｉｓｏ－＞ｎ－的规律．     

环氧封端和丙烯酸酯封端聚硫橡胶的合成

成功地合成了分子量为１２５０、３８００两种环氧封端的聚硫橡胶（ＥＰ－ＬＰ－３、ＥＰ－ＬＰ－２），并提出高分子量环氧封端聚硫（ＥＰ－ＬＰ－２）合成机理。以ＥＰ－ＬＰ为原料，与丙烯酸加成反应，制备相应分子量丙烯酸酯封端的聚硫橡胶（Ａｃｒｙ－ＬＰ－３、Ａｃｒｙ－ＬＰ－２）。用ＮＭＲ、ＩＲ、端基分析等手段对它们进行结构表征。     

PVA／HEC偏光膜的制备与偏光性能研究

研究了采用聚乙烯醇，羟乙基纤维素为主体材料，内含碘化钾，或者碘化锂，用过氧化氢氧化制备ＰＶＡ／ＨＥＣ偏光膜。实验结果表明，选择４．８０ｇＰＶＡ．０．２０ｇＨＥＣ中含有５ｍｍｏｌＫＩ的基膜，用５％Ｈ２Ｏ２水溶液氧化５ｓ，经拉伸，干燥，可制备柔韧性能好的ＰＶＡ／ＨＥＣ偏光膜。根据实验结果，提出了新法ＰＶＡ／ＨＥＣ膜与Ｉ２形成络合物的机理模型。     

淀粉／甲基丙烯酸甲酯接枝共聚及生物降解性能研究

本文以硝酸铈铵为引发剂，研究了单体浓度、引发剂用量、反应温度和反应时间对淀粉与甲基丙烯酸甲酯（ＭＭＡ）接枝共聚反应特征参数的影响。当引发剂浓度为４．５×１０（－３）Ｍ／Ｌ，ＭＭＡ浓度为０．２２５Ｍ／Ｌ，在３０℃反应３．５ｈ时，单体转化率Ｃ％＝９０．５％，接枝率Ｇ％＝６２％，接枝效率ＧＥ％＝７０％，接枝支链的粘均分子量Ｍ＝×１０（－３）。接枝共聚物及其与聚氯乙烯（ＰＶＣ）共混物浇铸成膜后，用黑曲霉在无机盐营养培养基中降解４０天，失重率分别为３２％和２３％，表明淀粉／ＭＭＡ接枝共聚物可作为生物降解塑料使用。     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.     

Analysis of marine hydrobiont lipid extracts as possible cryoprotective agents

We studied a combined effect of the cryoprotectants both of lipid and carbohydrate origin at the presence of DMSO or without it on cell viability and the RNA synthesis in the embryonic mollusc and echinoderm cell cultures obtained at different developmental stages. Cryoprotective properties of exogenous lipids correlated with their thermotropic behavior. Lipid extracts from marine hydrobiontes, which thermal transitions are characterized by relatively small part of calorimetric thermogram area lying at temperatures above 0 °C (6–18%), were found to possess a considerable cryoprotective activity. The results are discussed in relation to the prediction of the cryoprotective activity of lipid extracts for marine animal cells. In addition, it was found that marine invertebrate cells can be cryopreserved without DMSO at the presence of trehalose and lipid extracts of some marine hydrobiontes.     

Low-Temperature Properties of Silver

Pure silver is used extensively in the preparation of high-temperature superconductor wires, tapes, films, and other configurations in which the silver not only shields the superconducting material from the surrounding materials, but also provides a degree of flexibility and strain relief, as well as stabilization and low-resistance electrical contact. Silver is relatively expensive, but at this stage of superconductor development, its unique combination of properties seems to offer the only reasonable means of achieving usable lengths of conductor. In this role, the low-temperature physical (electrical, thermal, magnetic, optical) and mechanical properties of the silver all become important. Here we present a collection of properties data extracted from the cryogenic literature and, to the extent possible, selected for reliability.     

Early ironwork in Biscay: Survey,excavation, experimentation and materials characterization. An integral study of the mountainside ironworks (ferrerías de monte or “haizeolak”)

ABSTRACT

The production of iron in Biscay (Basque Country, Spain) has been a hallmark of this territory of the North of the Iberian Peninsula throughout its history. The Archaeology team of the Basque Country Mining Museum has spent 13 years, so far, studying the origins of this activity through the evidences left at the old pre-hydraulic iron production workshops known as mountainside ironworks (ferrerías de monte) or haizeolak. It has catalogued 170 archaeometallurgical sites of this type in Biscay, and the archeological excavation of some of them has led to the knowledge of the different stages of the production process that took place in these workshops. The team has also experimentally reproduced the work carried out in a mountainside ironworks from the High Middle Ages, and it has currently started the characterization process of this type of activity through the study of the collected materials.     

Mechanism Study on the Wear of CrAlTiN Coated High-Speed Steel Twist Drills Under Dry Cutting Conditions

As demands about environment protection are growing up, dry cutting technology is getting more and more concerns from all over the world. Main works performed here are study on dry cutting performances and wear mechanisms of M2high-speed steel (HSS) twist drills with CrAlTiN multicomponent coatings, which was deposited using magnetron sputter ion plating system, in drilling 45 and 30CrMnSiA steel, and their comparisons to those in drilling the same steel but using monolayer CrN and commercial TiN coated drills. Drilling performances of drills are evaluated mainly through the measurements of width on outer corner flank land and the cutting forces. Results show that performances of CrAlTiN coated drills are better than those of monolayer CrN and TiN coated drills. In drilling 45 and 30CrMnSiA steel, the average tool life of the CrAlTiN coated drills are 17.2 and 11.8 times higher than those of the uncoated drills. Observing wear of the drill with scanning electronic microscope, results show that there is no crack or spallation of the CrAlTiN coatings in wear zones. Main mechanism of the wear here is adhesion.     

Study on Bond Ability of Arc-Spraying Coatings with Different Surface Pretreatment on Cast-Iron

Arc spraying coatings are widely used in various applications, but uncommon in cast iron substrate. Different surface pretreatment technology is tested on substrates of gray cast iron. Surface roughness and residual stress were measured by TR200 and X-ray diffraction analyzer. Influence of different surface pretreatment methods ( dry blasting and fusebond) on roughness and residual stress was analyzed. The arc-sprayed coatings of wire 3Cr13 (φ2mm) on gray cast iron substrate is studied. The microstructure and interface of bonding layer were observed by SEM. The bond strength was taken by tensile test. Results show that bond strength with grit blasting is higher than fuse-bond; it is feasible to make wire 3Cr13 coating with arc spraying on cast iron substrate roughened by grit blasting.     

Structural Characteristics of TiO2 Ceramic Coating by Micro-Plasma Oxidation

TiO2 ceramic coatings with thickness of 20 μm were formed on the surface of pure titanium by micro-plasma oxidation. Their micro-structures were investigated by by using X-ray diffraction and their surface images were detected by using scan electronic microscope. There were three kinds of TiO2 coatings, pure anatase type TiO2 phase, mixed phases consisted of rutile type TiO2 phase and anatase type TiO2 phase, pure rutile type TiO2 phase. The coating surface with the pure anatase type TiO2 phase is rough, while the coating surface with the pure rutile type TiO2phase is smooth. The upper coating surface with the mixed type TiO2 phases is anatase type TiO2 structure and the subsurface of the TiO2 coating is rutile type TiO2structure.     

Evaluation of fatigue life of steel using steel grain size

The insightful discussion of the relationship between the construction of metallographic and fatigue life and proposition of mathematical relationships describing this relationship was conducted in the paper. This paper presents a method for estimating the fatigue life, based on the construction of the microstructural material taking into account the grain size and the participation of ferrite and pearlite phase.