苯乙烯改性膜高效回收脱蜡溶剂获国家发明专利

由石油化工研究院大庆化工研究中心研发的接枝苯乙烯改性膜及其制备方法，获得国家发明专利。将该膜用于润滑油酮苯脱蜡滤液中的甲苯和丁酮溶剂分离回收，在-15℃时，截留率高达88％，对节能降耗具有重要意义。现代润滑油基础油的脱蜡主要采用溶剂脱蜡工艺，在使用大量溶剂后还需要对溶剂进行有效的回收利用。此前，溶剂回收一直采用三效蒸发方法，溶剂在加热一冷凝的循环过程消耗了大量能量。为此，大庆化工研究中心研发出了用苯乙烯改性膜高效、低能耗回收溶剂的新途径。     

钛型药芯焊丝配方研制

本文阐述的是钛型药芯焊丝实际研制生产及应用过程中遇到的几个问题，并阐述了解决的途径和措施。     

Formation of composites fabricated by exothermic dispersion reaction in A1-TiO2-B2O3 system

The formation of aluminum matrix composites fabricated by exothermic dispersion reaction in A1-TiO2-B2O3 system was investigated. The thermal analysis results show that the reactions are spontaneous and exothermic. The Gibbs free energy of α-Al2O3 is the lowest among all the combustion products, followed by TiB2 and Al3Ti. It is noted that when the B2O3/TiO2 mole ratio is below 1, the reaction products are composed of particle-like α-Al2O3, TiB2 and rod-like Al3Ti. The α-Al2O3 crystallites, resulting from the reaction between A1 and TiO2 or B2O3, are segregated at the grain boundaries due to a lower wettability with the matrix. SEM micrographs show that rod-like Al3Ti phase distributes uniformly in the matrix. When the BEO3/TiO2 mole ratio is around 1, the Al3Ti phase almost disappears in the composites, and the distribution of α-Al2O3 particulates is improved evidently.     

“国际钛产业发展高峰论坛”举行

6月28日～29日，“国际钛产业发展高峰论坛”在江苏省东海县举行，此次论坛由香港新时代国际实业有限公司、东海县人民政府、东海新时代应用材料有限公司主办。国内外200多位钛产业相关人士出席了会议，本次论坛深入探讨了中国钛产业的现状及发展趋势，并探索如何深入挖掘钛产业的潜在市场。会议讨论了国内的钛产业发展格局和主要问题，     

聚合物基金属梯度复合材料的制备与结构研究

本文通过石墨阴极溶液涂膜法制得甲基丙烯酸-丙烯酸共聚物[P(MMA-co-MAA)]与环氧乙烷(PEO)的共混聚合物,并以其为基质制备了聚合物基铜金属复合膜(CPCFs).在这一过程中,对所得溶胀阴极膜(SCF)进行半干燥处理后,用电化学方法使其还原以得最终产物.实验研究表明:(1)低P(MMA-co-MAA)含量会增强SCF的离子电导率;(2)还原反应中酸性环境会增强电导性;(3)水-乙醇共溶剂有助于增强电导率.偏光显微镜测试显示:poly(MMA-co-MAA)会影响PEO的结晶.X-射线衍射实验也证实了还原铜金属单质的存在.     

解读ISO12944-5：2007

简要介绍了ISO12944-5：2007与1998旧版的一些区别和调整，列出了在大气腐蚀环境下的推荐防护涂料体系。     

钛的应用及前景展望

从传统应用及新兴应用两方面对钛的应用进行了综述,并对钛的应用前景进行了展望。     

Spin Dependent Hopping in Ti Doped La0.67 Ca0.33 MnO3

A systematic investigation of the magnetic and transport properties of Ti doped La0.67Ca0.33MnO3 was reported. The Ti substitution for Mn ions results in a reduction in ferromagnetism and conductivity. The metal-insulator transition temperature is close to Curie temperature which decreases from 274 to 82 K as x increases from 0 to 0.17. The most important effect of Ti doping is to introduce spin clusters in the samples due to the distortion of local lattice and the inhomogeneous magnetic structure induced primarily by the random distribution of Mn ions. A maximum magnetoresistance ratio as large as 90% in 1 T at 122 K was obtained for the sample with x =0. 055, which is four times larger than that obtained for LCMO sample at 272 K. There is a remarkable field-history dependent MR in the cooling process for the doped samples while such phenomenon disappears in the warming run. The resistivity follows well the variable range hopping behavior in paramagnetic state. Both the size effect and spin dependent hopping of carriers between the spin clusters should be considered in this system.