Determination of gel time and gel point of epoxy-amine thermosets by in-situ near infrared spectroscopy
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DOI: 10.1016/j.polymertesting.2018.11.001
Abstract: Abstract A method of near-infrared spectroscopy combined with wavelet transform was proposed to determine in-situ the gel time and gel point of epoxy resin simultaneously. The reconstructed spectra of the low-frequency wavelet coefficients were used… read more here.
Keywords: gel point; gel time; spectroscopy; gel ... See more keywords
Determination of gel time of prepreg in copper clad laminate industry by near infrared spectroscopy
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DOI: 10.1177/0967033520963799
Abstract: Gel time of prepreg is an important quality determinant in the manufacturing process of copper clad laminate (CCL). Prepreg consists of a glass fiber reinforcement impregnated to a predetermined level with a resin matrix. In… read more here.
Keywords: time prepreg; infrared spectroscopy; near infrared; time ... See more keywords
Effect of modified bentonites on the crosslinking process of epoxy resin with alifphatic amine as curing agent
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DOI: 10.14314/polimery.2019.7.5
Abstract: In this work the influence of modified bentonites on the process of epoxy crosslinking with triethylenetetramine (TETA) was investigated. Bentonites (BS) modified with quaternary phosphonium (QPS) and ammonium (QAS) salts were used as a nanofiller… read more here.
Keywords: modified bentonites; epoxy resin; process epoxy; gel time ... See more keywords