不饱和聚酯树及其成型工艺进展

本文阐述了国外不饱和聚酯树及其成型工艺进展。     

含二茂铁单元的分子树络合物的电化学性质

介绍了近年来含二茂铁单元分子树络合物化学行为及其应用的研究。     

最小割集法在气井加热炉安全措施制定的应用

本文阐述了最小割集理论及其在事故分析中的作用,利用事故树分析法对气井加热炉爆炸事故进行风险分析,结合苏里格采气作业区气井井口节流加热集输工艺,建立气井加热炉爆炸事故树。采用最小割集法对气井加热炉爆炸事故树进行分析,从而为气井加热炉正常运行制定出高效、可行的安全措施。     

树脂膜渗透(RFI)成型工艺及其应用

概述了树脂膜渗透(RFI)成型工艺的基本原理、工艺特点、及其纤维预成型体的制作和树脂膜等的关键技术和成型工艺方法及应用，作为一种新型的低成本复合材料成型工艺，其应用市场潜力巨大。     

HS-SPME-GC-MS/MS法分析树苔及其提取物中的挥发性化学成分

为分析树苔及其提取物中的挥发性及半挥发性化学成分,通过单因素实验优化固相微萃取的萃取头、萃取温度、萃取时间和解吸时间,建立了一种测定树苔及其提取物中挥发性及半挥发性化学成分的顶空-固相微萃取-气质联用法(HS-SPME-GC-MS/MS),并用该方法分析了3种树苔提取物及2种树苔原料。结果表明:优化得到的固相微萃取条件为:0.5 g样品,65μm聚二甲基硅氧烷/二乙烯基苯粉色萃取头,萃取温度90℃,萃取时间20 min,解吸时间2 min; 5种树苔样品中共鉴定出338种(13类)挥发性及半挥发性化学成分,共检出成分有7种,3种树苔提取物主要共有特征成分为苔色酸乙酯、苔黑酚酸甲酯、赤星衣酸甲酯,2种树苔原料主要共有特征成分为苔黑酚酸甲酯。该方法前处理简便快捷、无溶剂损耗,适用于树苔样品的快速定性及半定量分析。     

火灾现场疏散中毒窒息事故树分析与对策

本文采用安全系统工程方法,对火灾现场疏散中毒窒息事故进行事故树分析;并绘制出火灾现场疏散中毒窒息事故树分析图,直观地表现了各可能导致顶上事件发生的基本事件及其逻辑关系;通过对事故树的定性分析,得出了最小割集、最小径集和结构重要度,指明了预防事故发生的可能途径;在对各途径作出比较之后,给出了火灾现场疏散中毒窒息事故的预防措施。     

三唑酮热雾剂的研制

本文提出了三唑酮热雾剂的组成和技术指标，研究了影响热雾剂性能的各种因素，报道了三唑酮热雾剂的毒性及其对树白粉病的防效。     

聚酯印铁涂料

讨论聚酯印铁涂料的树脂、催化剂和颜料的选择及其对漆膜的影响     

塑料用涂料

以硬涂层和底漆涂覆的聚碳酸酯树脂膜；塑料材料用底漆组合物及其涂装方法;[编者按]     

中国塑料专利

防滑鞋底材料;新型聚烯烃高效耐热氧化复合型;一种阻燃PC复合材料及其制备方法;聚酰胺树脂膜     

Design and processing of ZnO doped tricalcium phosphate based materials: Influence of β/α polymorph phase assemblage on microstructural evolution

Tricalcium phosphate (TCP) based biomaterials are excellent candidates in hard tissue engineering due to their similarity to the natural bone composition and outstanding properties. The presence of additives such as (Mg²⁺, Zn ²⁺, F⁻, CO₃²⁻ and/or SiO₄⁻) in solid solution in the structure of TCP, affects the stability of its different polymorphs and therefore the properties of TCP based biomaterials. It is known that the incorporation of zinc in TCP in the non-toxic level stimulates bone growth and its mineralization, hence its interest. Nevertheless its effect on phase assemblage and microstructure evolution has not been clearly established. The main purpose of this study was to synthesize TCP and zinc doped monophasic/biphasic α/β-TCP dense biomaterials, by solid-state sintering process, with different ZnO contents and controlled phase proportions and microstructure on the final material. The effect of ZnO content and sintering temperature on phase assemblage, densification and microstructural evolution has been investigated.     

Effects of calcination condition on expansion property of MgO-type expansive agent used in cement-based materials

Previous research indicated that the expansion property of MgO-type expansive agent (MEA) depended strongly on the calcining conditions, i.e. kiln temperature and residence time. However, the intrinsic effect of calcination condition on the expansion property of MEA has not been clearly demonstrated. In the present work, the effects of calcination condition on the microstructure, hydration activity, and expansion property of MEA have been investigated, and their correlations are also studied. Results indicate that the microstructure of MEA is the intrinsic factor that controlling its expansion property, which is influenced by the calcination condition. MEA produced under higher temperature and longer residence time has less interior pores, larger crystal size of MgO, and smaller specific surface area, thus resulting in lower hydration activity and slower expansion at early age, but larger “ultimate” expansion at late age. While, a new expansion model of MEA is proposed to explain these results.     

对位芳纶的发展现状、技术分析及展望

介绍了美国杜邦公司、日本帝人公司、韩国、俄罗斯以及中国聚对苯二甲酰对苯二胺（PPTA）纤维（对位芳纶）的发展及其生产能力。从聚对苯二甲酰对苯二胺的合成、纺丝液的制备、干湿法纺丝、溶剂回收等方面探讨了制约中国对位芳纶发展的原因。详细介绍了对位芳纶主要产品的性能及英在,先进复合材料、防护材料、橡胶增强材料、建筑结构加固材料、摩擦材料和密封材料等领域的应用,并展望了中国对位芳纶的发展前景。     

Determination of volumetric water content of concrete using ground-penetrating radar

A large number of reinforced or prestressed concrete pathologies require the presence of water to develop. In this context, the quantification of water content is an important phase for the diagnosis of concrete. The propagation of electromagnetic waves is controlled by its electromagnetic properties, mainly influenced by the presence of water in the case of concrete. We propose to use the direct transmitter-receiver radar wave to determine the moisture of the cover concrete. The Wide Angle Reflection Refraction (WARR) measurement technique is used to obtain the speed of the direct wave. A method is used to extract the group and the phase velocity of this wave. We show that the speed is not dependent to the frequency between 300 MHz and 1.2 GHz in these testing conditions. By using two different concretes partially saturated, we show that there is a linear relation, independent of the concrete, between the volume water content and the propagation velocity of the direct wave on the one hand and its attenuation on the other hand.     

S-乙酰氨甲基-L-半胱氨酸盐酸盐的制备

以L-半胱氨酸盐酸盐水合物为原料．在三氟醋酸溶剂体系中对巯基（-SH）进行乙酰氨甲基（Acm）保护．可制得标题化合物。后处理过程中．先调节反应液的极性．使产物从中析出．然后对昂贵的三氟醋酸溶剂进行常压回收。产品收率达到80％。     

3-(S)-巯基-1-(N-对硝基苄氧羰基乙酰亚胺)四氢吡咯的合成

对标题化合物的合成工艺作了改进。以L-羟基脯氨酸为原料,环己酮作催化剂,经脱羧获得的3-(R)-羟基四氢吡咯盐酸盐,与由乙醇和乙腈反应得到的乙氧基乙酰亚胺盐酸盐,经5步反应成功地合成了目标产物,总收率为15.6%,关键中间体及目标化合物经过1HNMR检测,还探讨了标题化合物及其前体的构型转化问题。     

Surface modification of SiC to improve joint strength via a Corona plasma treatment

The high mechanical and chemical properties of SiC make it difficult to texture and modify its surface using such conventional methods as mechanical machining and wet etching. Among possible alternative strategies, Atmospheric Pressure Plasmas (APPs) could be used, cutting cost and time, but much still has to be understood about their feasibility for the surface treatment of ceramic materials.In this work, the effectiveness of a commercial corona discharge system in modifying the surface of SiC has been evaluated, focusing on its positive effect on the joint strength of adhesively bonded plasma-treated SiC.The objective of the study has been to observe the surface changes, in terms of chemical composition and texture, that take place as a result of exposure to corona plasma and to compare the obtained results with previous studies on laser and low-pressure plasma textured SiC samples. These very first results, derived from characterization and mechanical testing, suggest that this approach could be a promising alternative.     

二(2-氨基乙基)-(3-氨基丙基)胺的合成新方法

以二(氰基甲基)胺及丙烯腈为原料，通过亲核加成、氢化反应合成了不等臂有机多胺化合物二(2-氨基乙基)-(3-氨基丙基)胺，标题化合物及其中间产物经多种谱学手段表征确证。在优化条件下，产物的总收率为67％，含量99.5％(HPLC)。     

Barrier properties of polypropylene/organoclay nanocomposites

Polypropylene/clay nanocomposites are attractive candidates for applications requiring good barrier properties because of the inherent features of the polymer matrix. To assess their potential, systematic research relating the barrier performance to the structural characteristics of polypropylene/montmorillonite samples has been conducted. The nanocomposites have been tested in the presence of helium, water vapor, toluene, and methanol, and the unmodified matrix has been found to exhibit better properties than its mixtures with the compatibilizer and/or clay. The method for the interpretation of the results proposed in this study considers the composition of the samples, the morphology of the semicrystalline polymer matrix, and the state of dispersion/exfoliation of the clay layers, along with the specific interactions between the solvent molecules and the system components. In this way, several points have been identified for understanding and improving the performance of the nanocomposites. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 618–625, 2007     

单斜相态TiO_2(B)的制备和应用研究进展

介绍了单斜相态TiO2(B)的发展历史,对其制备和应用研究现状进行了总结。在此基础上,分析了当前研究存在的问题,并指出了进一步研究的可能方向。