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- froix, m.f., nelson, r.e., ¡°thermal conductivity of polyurethane foams¡±, journal of cellular plastics, 1975, vol.11, pp. 343¨C348
- khattab, n.m., et al., ¡°effect of catalysts on the microstructure and thermal properties of rigid polyurethane foams¡±, polymer engineering & science, 2006, vol.46(7), pp. 923¨C931
- frisch, k.c., et al., ¡°recent advances in polyurethane technology¡±, advances in urethane science and technology, 1997, vol.13, pp. 1¨C25
- european polyurethane association (epua), rigid polyurethane foams: processing, performance and applications, 2019 edition
- astm d2126 – 17, ¡°standard test methods for response of rigid cellular plastics to thermal and humid aging¡±, astm international
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