Respiratory & Skin Protection for Solvent-based Sealing Work
溶剂型封护施工的呼吸与皮肤防护
标签：职业健康, 有机溶剂, 呼吸防护, 爆炸限值, PPE
溶剂型封护剂（二甲苯/乙酸丁酯体系）作业须三防。呼吸：室内佩戴 A 型有机蒸气滤盒半面罩，滤盒每 4 h 更换，作业点设有机气体侧吸罩，密闭空间改供气式面罩；皮肤：用 0.3 mm 以上丁腈或氯丁手套，乳胶手套会被苯类溶剂穿透而失效；防爆：喷涂区机械通风使溶剂浓度低于爆炸下限的 25%（挂 LEL 报警仪），电器用防爆型，喷枪与工件可靠接地防静电。现场张贴禁烟禁火花标识，剩料与污染擦布随时放入带盖金属桶并于当日清出。眼睛接触先以洗眼器冲 15 min 再就医。
Solvent sealers (xylene/butyl acetate systems) demand three protections. Respiratory: A-type organic-vapor half-mask with cartridges changed every 4 h, side-draft extraction at the work point, supplied-air masks in confined spaces. Skin: nitrile or neoprene gloves 0.3 mm or thicker — latex is permeated by aromatics and useless. Explosion control: mechanical ventilation keeps vapor below 25% of LEL (monitor with an LEL alarm), explosion-rated electrics, and grounded gun and workpiece against static. Post no-smoking/no-spark signs; keep leftover material and contaminated rags in lidded metal cans cleared daily. Flush eye contact 15 min before medical care.