药型罩参数对周向MEFP成型的影响

采用ANSYS/LSDYNA有限元软件数值模拟研究了药型罩参数对周向MEFP成型的影响.通过对成型后的集群EFP性能统计分析,得到药型罩曲率半径、壁厚和口径对周向MEFP成型性能的影响规律和参数之间的合理匹配关系.结果表明,在爆炸载荷作用下,周向MEFP装药形成的中间层EFP速度明显大于边缘上下层EFP速度;而且当药型...     

改性补强填料YB-5在半钢子午线轮胎气密层胶中的应用

研究改性补强填料YB-5在半钢子午线轮胎气密层胶中的应用。试验结果表明:在半钢子午线轮胎气密层胶中加入改性补强填料YB-5,同时调整天然橡胶与溴化丁基橡胶的并用比,减小炭黑N660用量,胶料的焦烧时间缩短,硫化速度加快;硫化胶的定伸应力减小,耐屈挠性能和气密性能提高,生热降低;改性补强填料YB-5的分散性优于碳酸钙;成品轮胎性能变化不大,生产成本降低。     

补强填料金刚素在橡胶中的应用研究

对补强填料金刚素在橡胶中的应用进行研究,采用金刚素等量替代炭黑N660用于NR和SBR标准配方,胶料的弹性和耐屈挠性能有所改善。采用金刚素部分替代炭黑N375用于胎侧胶和部分替代炭黑N660用于气密层胶,研究表明在轮胎胎侧胶中替代10份以内的高耐磨炭黑,或在轮胎气密层胶中增量替代30份以内的通用炭黑是可行的。     

Adsorptive removal of aqueous fluoride and ferrocyanide by liner minerals from SPL landfill leachate: Effect of pH and adsorptive competition

Soil and water near a spent potliner (SPL) landfill are often found to be highly contaminated with fluoride and ferrocyanide. The liner system, composed of kaolinite and montmorillonite, provides the primary attenuation mechanism for the risk of soluble ferrocyanide and fluoride in the leachate from a SPL landfill. The adsorption of ferrocyanide and fluoride by montmorillonite and kaolinite was investigated in both a single and a binary solute system as a function of the aqueous pH. The adsorption of both solutes was highly pH-dependent, and competed with each of the two liner minerals. In the single solute–montmorillonite system, the adsorption was higher under acidic pH conditions and lower under alkaline pH conditions. For the single solute–kaolinite system, the maximum adsorption appeared near pK_a value of the edge functional group. In the binary solute system, the adsorption of solute appeared to be suppressed by the presence of a counterpart, and the competitive adsorption becomes less significant with increasing pH where both adsorptions were minimal. As a result, increasing aqueous pH and the presence of a competitor in SPL-induced leachate can mitigate the attenuation capacity provided by the liner system, thereby, enhancing the leachability of ferrocyanide and fluoride from SPL landfill sites.     

生活垃圾卫生填埋场防渗处理

从中山市中心组团垃圾综合处理基地的地质特点出发,提出了人工水平防潘的处理工艺,通过对实际工程情况的分析研究,介绍了卫生填埋场防渗处理的施工和检测方法。     

回转窑烧成带镁铬砖的使用与窑衬寿命的关系

根据回转窑烧成带镁铬砖的损坏机理，找出提高窑衬周期的具体措施，阐明水泥生产过程中回转窑烧成带镁铬砖的使用与窑衬寿命的关系。     

线阵CCD技术及其在靶场测试中的应用

交汇测试是弹丸外弹道姿态测试的一种基本原理，本文介绍了线阵CCD图像传感器的原理，主要技术指标和这些指标在应用中的实际意义，对线阵CCD立靶位置测试，攻角测试和多目标炸点测试，给出了测试方法和相应的计算公式。     

钢衬聚四氟乙烯设备的加工、设计与应用

介绍了钢衬聚四氟乙烯设备的加工方法,设计中需要注意的问题,以及在湿氟、湿氯环境下的使用情况。     

衬塑钢管、管件的成型工艺探讨

简述了镀锌钢铁管和玛钢管配件实施内衬塑的特性及应用概况,重点阐述了衬塑方法和注塑模具的特殊设计结构。     

包覆硝酸铵发射药界面力学性能研究

研究包覆硝酸铵发射药的界面力学性能。采用拉伸剪切和压缩的方法测定在不同硝酸铵含量、不同硝酸铵粒径、不同温度下包覆硝酸铵发射药的界面剪切强度。实验结果表明,随着硝酸铵含量的升高,发射药的界面剪切强度先上升再下降;随着硝酸铵粒径的降低,发射药的界面剪切强度不断下降;随着温度的升高,发射药的界面剪切强度先升高再降低。