Empirical model for the effect of air humidity during manufacturing on the glass transition temperature of carbon fiber reinforced hot curing epoxy – a case study

• DOI: 10.1007/s43939-024-00110-9
• Publication Date: 2024-08-26T14:03:09Z
• Authors: Benjamin Krolitzki; Tim Clausen; Elisa Andresen; Lazar Boskovic
• Keywords: 0301 basic medicine; 03 medical and health sciences; TA401-492; Materials of engineering and construction. Mechanics of materials; 620; 543

Abstract Carbon fiber-epoxy laminates are used in aerospace manufacturing, e.g. as substrates for solar cells of satellites. Commonly, fibers or fibermats impregnated with epoxy resin and placed the required orientation. During subsequent curing, molecules crosslinked. Cured parts characterized by their glass transition temperature (T g ). It has been observed that T matrix vary recorded absolute air humidity during wet fiber placement manufacturing. Based on production data a series 203 carbon space application, an empirical linear relationship between at beginning each day fully cured laminate is formulated validated. The equation describes decrease achievable increasing humidity. quantitative nature results encourages straightforward practical application to determine maximum given conditions.