Research on efficient ventilation protection measures for organic solvent in composite materials impregnation room

• Published in: Zhonghua laodong weisheng zhiyebing zazhi Vol. 43; no. 6; p. 417
• Main Authors: Nan, X Y, Liu, C, Meng, R R, Xing, Y F, Du, W X, Wu, Y J
• Format: Journal Article
• Language: Chinese
• Published: China 20.06.2025
• Subjects: Air Pollutants, Occupational - analysis; Air Pollution, Indoor - analysis; Air Pollution, Indoor - prevention & control; Occupational Exposure - prevention & control; Solvents - analysis; Ventilation - methods; Workplace; Xylenes - analysis; Impregnation; Organic solvent; Solvents; Occupational health; Composite materials; Ventilation protection
• ISSN: 1001-9391
• DOI: 10.3760/cma.j.cn121094-20240407-00149

To explore highly efficient ventilation protection technology for large-space workplaces adapted to the production process in composite material impregnation. A composite material impregnation room was selected as the research subject from August to December 2023. Occupational health investigation, on-site detection, and physical simulation of air distribution were used to analyze the distribution of the xylene concentrations in the impregnation room. In addition, the causes for excessive concentrations were analyzed, and the combination ventilation design of enclosed negative pressure cabinets and jet directional supply of fresh air was proposed. The concentration of xylene, the capture velocity and the differential pressure of ventilation facilities before and after the transformation were tested on the spot. The rationality of the airflow organization was determined through smoke testing, and the ventilation protection effects before and after the transformation were analyzed. The time-weighted average all