固液混合过程静电特性研究+文献综述
时间:2018-05-10 19:20 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：本课题要解决固液混合过程中的静电问题，也就是真正控制好静电，需掌握静电参数包括电位、电场强度、电荷量、荷质比、电流、静电能量等；同时由于存在粉体和液体的混合，也必须理解粉体材料和液体物料的电气参数包括粉体比电阻、电阻率、介电常数、电容、时间常数和最小点火能量等，另一方面，也需要明白静电规律，也即配比生产量越大，混合的传输速度越大，粉体、液体混合表面摩擦越剧烈，因此产生的静电量就越大，也将带来更大的静电危害。在本次课题中，实验时巧妙地利用重力提供的动力，在实验室中使用安固强公司提供的蓄电池电极材料，模拟了固液混合体在工业运输过程中的静电特性。同时，由于安固强公司对药粉化学成分的保密，也给我们的研究过程带来了很大的困难。22636 毕业论文关键词：固液混合过程；电场强度 ；摩擦；静电危害 Electrostatic Properties Of Solid-liquid Mixing Process Abstract: To resolve this issue in the process of solid-liquid mixing static problems, which is really good control static, static parameters including the potential need to master the electric field strength, the amount of charge, charge to mass ratio, current and electrostatic energy, etc.; simultaneously due to the presence of powder and liquid mixing the electrical parameters must be understood that the powder material and a liquid material include powder resistivity, resistivity, dielectric constant, capacitance, time constant and minimum ignition energy, etc., on the other hand, it needs to understand the electrostatic law, i.e. production ratio, the greater transmission speed mixing, the powder, the more intense mixing liquid surface friction, and therefore the greater the amount of static electricity generated, but also the greater static hazards. In this issue, the clever use of gravity to provide dynamic experiments, the use of battery ABCo provided strong powder filled in the laboratory to simulate the electrostatic properties of the solid-liquid mixture in the industry during transport. Meanwhile, the company's strong ABCo- powder chemical composition of confidentiality, but also to our research process has brought great difficulties. Keywords: Solid-liquid mixing process；Electric field strength；Friction；Electrostatic hazards 目录 1绪论 1 1.1设计背景 1 1.2国内外研究现状分析 2 1.3静电的产生 3 1.4静电感应 4 1.5静电的特殊性 4 1.6静电的危害 4 1.6.1静电对电子元件的影响 5 1.6.2静电损伤的特点 5 1.6.3静电损伤的类型： 5 1.6.4 ESD三种型式 6 1.7自燃温度 6 2固-液混合流静电参数的测量 6 2.1实验内容 6 2.1.1静电研究对象的确定 6 2.1.2静电放电规律 7 2.1.3 EST（静电）测试方法 7 2.2固-液混合流参数测量的难点 8 2.2.1不均匀的固液混和体分布 8 2.2.2不规则的速度分布 8 2.2.3粒了尺寸和形状 8 2.2.4湿度成份 8 2.2.5化学成分 8 2.3分子间的静电力 9 2.4实验原理 10 2.5实验设备及材料 11 2.5.1实验设备 11 2.5.2实验材料 14 2.6实验方案 14 2.6.1方案可行性研究 14 2.6.2方案确定 16 2.7实验内容及步骤 17 (责任编辑：qin) |