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J. Cent. South Univ. Technol. (2007)03-0296-05 DOI: 10.1007/s11771-007-0058-4 Curing mechanism... diisocynate. Chemical reaction and curing mechanism of this system were discussed by incorporating the results of infra spectrum analysis. The results indicate that the epoxy polymeric network......
J. Cent. South Univ. Technol. (2009) 16: 0392-0398 DOI: 10.1007/s11771-009-0066-7 Non-isothermal curing kinetics and thermal properties of benzoxazine-phenolic copolymers XU Li(徐 丽), SITU Yue... of the novolac-type phenolic resin and the benzoxazine-phenolic copolymer BP31. In order to understand the curing process of the copolymers, the curing behavior and curing kinetic characteristics were studied......
of vanadium and curing rate of chlorine were investigated, and the effects of leaching time and leaching temperature on leaching rate of vanadium were also studied. The results show that the vanadium leaching rate and the curing rate of chlorine are 67.3% and 51.5% (mass fraction), respectively, at roasting temperature of 750 °C, roasting time of 4 h, 15% sodium chloride and 8% (mass fraction) calcined......
curing agent content is 7% (mass fraction) of phosphorus acid, and for this system the initial curing temperature and the optimal curing temperature are 102.32 and 159.07 ℃, respectively; the apparent... kJ/mol,反应级数为0.9；糠酮树脂的固化反应气态产物以H2O为主,另有少量的CO,CH4和CO2. 关键词:新型炭材料；糠酮树脂；固化反应动力学；气态产物 中图分类号:TQ 324.1 文献标识码:A Curing reaction of furfural......
UCS of mixtures after 28 d of curing 3.2 Properties after sulfuric acid immersion 3.2.1 Visual observation Visual observation was conducted as one of the evaluation methods of sample deterioration... J. Cent. South Univ. (2020) 27: 3821-3838 DOI: https://doi.org/10.1007/s11771-020-4473-0 Performance evaluation of nano-silica and silica fume on enhancing acid resistance of cement-based......
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Influence of Curing Accelerators on the Imidization of Polyamic Acids and Properties of Polyimide Films徐勇,ZHAO Anlu,WANG Xinlong,XUE Hui,LIU FeilongSchool of Chemical Engineering, Nanjing University of Science & Technology摘 要:In order to lower the imidization temperature of polyamic acids(PAA), the catalytic activities of the curing agents p......
of effective initial steam-curing and water-curing duration were measured and analyzed with XRD, TG, X-ray CT, SEM-BSE and MIP techniques. The results show that the effective initial steam-curing duration for pre-cast concrete with lower water-binder ratio was 10-14 h at 50 °C and the initial water-curing duration was 7-14 d. And the hydration evolution of cement, fly ash and slag in pre-cast concrete......
UCS values of samples curing at different curing temperatures(a) and fitting curves of relationship between UCS and curing temperature at 3 d(b), 7 d(c), and 28 d(d) 图5 3 d龄期不同养护温度下毒害离子浸出浓度 Fig. 5 Concentration of toxic ions of 3 d aged samples at different curing temperatures 表2 浸出毒性试验结果(3 d) Table 2 Element concentration in toxicity characteristic leaching procedure (3 d......
Curing Behavior of Epoxy Asphalt余剑英Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology摘 要:The curing process of epoxy asphalt was analyzed by Fourier transform infrared (FT-IR) spectroscopy. Effect of curing temperature on viscosity of epoxy asphalt, and changes of mechanical properties......
