PVC副产盐酸脱吸新工艺

介绍了山东新龙集团有限公司自主研发的PVC副产盐酸脱吸新工艺,采用该工艺脱吸的氯化氢不含游离氯,含水体积分数小于2×10^-4,可作为生产三氯氢硅的原料气,实现了酸水零排放,解决了PVC生产中的废酸排放问题。     

高冲击功抗硫化氢耐低温阀体的试制开发

通过优化设计碳、锰、硅元素含量及锰碳比、碳当量,将碳含量控制在0.18%~0.22%,锰含量控制在1.22%~1.32%,保证锰碳比≥6;合理设计热处理工艺,试制开发了LCC-1阀体,并且性能检验表明产品性能全部满足标准要求。采用调质处理工艺,产品已进行了批量生产,一次送检合格率达到98%以上。     

Platinum-decorated three dimensional titanium copper nitride architectures with durable methanol oxidation reaction activity

The development of highly effective and robust electrocatalysts is an imperative requirement for the commercialization of direct methanol fuel cells. In this work, three dimensional, porous and urchin-like titanium copper nitride architectures is explored and implemented as the Pt support. The methanol oxidation reaction (MOR) performance of the obtained electrocatalyst shows a specific and mass activity of 1.46 mAcm⁻² and 0.84 Amg_Pt⁻¹, respectively, which are both more than 3 times higher compared with the commercial Pt/C catalyst. Notably, the novel catalyst also exhibits high stability, and a much slower performance decay compared with the benchmarked Pt/C with the same durability testing procedures. The comprehensive data confirms that the new type catalyst possesses a high charge transfer during the MOR process, and the synergistic effects between anchored Pt and the support mainly contributes to the high stability. This work provides a strategic method for designing effective MOR electrocatalyst with desirable stability.     

木聚糖酶对杨木化学浆漂白的影响

对木聚糖酶辅助二氧化氯漂白杨木KP浆进行了研究,结果表明在不同酶处理位置的二氧化氯漂白中,酶处理位置对漂白效果影响很大。在木聚糖酶与药品二氧化氧协同漂白过程中,Di段与木聚糖酶协同作用时,时间在40min时较合适。在E段与木聚糖酶协同作用时,时间在50min较为合适。在D2段与木聚糖酶协同作用时,时间在30min时漂白...     

废纸脱墨污泥资源化利用技术

废纸回用过程中排放的脱墨污泥对环境造成严重污染,这些污泥具有极高的回收利用价值。该文主要介绍了脱墨污泥的一些处理方法和资源化利用技术,从而实现可持续发展战略。     

滋控溅射法制备阻隔包装纸的研究

采用磁控溅射法制备了阻隔包装纸,优化了磁控溅射的工艺参数。测试了最佳工艺条件下制备样品的表面形貌和抗水性。将制备的阻隔包装纸与铜版纸、聚乙烯共挤包装膜进行了流体减阻性能测试。结果表明：阻隔包装纸对于聚乙烯共挤包装膜具有更好的流体减阻效果。阻隔包装纸的这种优异性能将有助于拓宽其在微流体器件上的应用。     

Embedding ultrasmall Ag nanoclusters in Luria-Bertani extract via light irradiation for enhanced antibacterial activity

Nano Research - Ultrasmall silver nanoclusters (Ag NCs) with rich surface chemistry and good biocompatibility are promising in antibacterial application, however, further development of Ag NCs for...     

基于LabVIEW的故障检测系统

本文在简介最新技术虚拟仪器及其开发环境LabVIEW的基础上,详细论述了基于LabVIEW的故障检测系统的软硬件设计方案,并介绍了故障检测系统在设备故障检测中的应用情况。     

CuO nanosheets/ZnO nanorods synthesized by a template-free hydrothermal approach and their optical and magnetic characteristics

Nanostructured CuO/ZnO heterojunctions were fabricated via a template-free hydrothermal reaction. The prepared CuO/ZnO nanocomposites are composed of one dimensional (1D) hexagonal ZnO nanorods and two-dimensional (2D) monoclinic CuO nanosheets. The single crystal nature of both ZnO and CuO was confirmed. Optical spectra show the widened absorption range from UV to visible light, which suggests the potential of the obtained CuO/ZnO composites for visible-light-driven photocatalyst. The point defects at the interface play the leading role in triggering ferromagnetism of CuO/ZnO composites. Fundamentally, the ferromagnetism can be understood by the charge-transfer mechanism according to Stoner theory. The findings can give a further insight into the ferromagnetic origin of nonmagnetic composites and the integration of ferromagnetic and photocatalytic properties into an identical sample.     

立式消声器的动态响应与结构优化

为研究六缸柴油机用消声器振动特性,通过模态分析、模态测试与振动测试相结合的研究方法来分析消声器总成的振动特性及其在发动机不同转速点火激励下的振动响应,以提高其1阶约束模态同时对消声器总成开展结构优化.研究结果发现,原消声器总成故障主要原因是前2阶约束模态在发动机点火激励频率范围内,在1000rpm、1360rpmi附近...