由小勺子产生的静电放电引起的点火危险

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics Pub Date : 2025-07-07 DOI:10.1016/j.elstat.2025.104128

Jeremy M. Smallwood

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引用次数: 0

摘要

用基于IEC 60079-32-2的材料进行摩擦测试，也可以用舀取样品材料（玻璃珠）进行测试。根据IEC 60079-32-1给出的标准对铲斗的排放进行评估。虽然勺子的投影面积小于10000 mm2，但电荷转移大于25 nC或60 nC的静电放电是有规律的。根据IEC 60079-32-2测试摩擦充电，放电时转移的电荷大于用玻璃珠充电时转移的电荷。结论是，IIA和IIB类材料在接近最佳可燃环境时可能发生一定的着火危险。

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Ignition risk due to electrostatic discharges obtained from small scoops

Small scoops such as might be used to handle powders were tested by rubbing with materials based on IEC 60079-32-2 and also by scooping a sample material (glass beads). Discharges from the scoops were evaluated against the criteria given in IEC 60079-32-1. Although the projected areas of the scoops were less than 10000 mm², ESD with charge transfer greater than 25 nC or 60 nC were regularly obtained. Tribocharging the scoops based on the IEC 60079-32-2 test gave charge transferred in discharges greater than when charging by scooping glass beads. It is concluded that some risk of ignition could occur to near optimum flammable atmospheres from Group IIA and IIB materials.

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来源期刊

Journal of Electrostatics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

11.10%

发文量

审稿时长

49 days

期刊介绍： The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.