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Separation of chemical mechanism of viscous increase and physical mechanism of viscous falling for reactive resin system

Dai, Xiao-Qing ; Xiao, Jia-Yu ; Zeng, Jing-Cheng ; Jiang, Da-Zhi ; Bian, Li-Ping

Guo fang ke ji da xue xue bao, 1901-01, Vol.31 (5), p.135-140

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Título:
Separation of chemical mechanism of viscous increase and physical mechanism of viscous falling for reactive resin system
Autor: Dai, Xiao-Qing ; Xiao, Jia-Yu ; Zeng, Jing-Cheng ; Jiang, Da-Zhi ; Bian, Li-Ping
É parte de: Guo fang ke ji da xue xue bao, 1901-01, Vol.31 (5), p.135-140
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
content type line 23
ObjectType-Feature-1
Descrição: The isothermal differential scanning calorimetry (DSC) method was used to determine the relationship between curing degree and time of a epoxy resin of CYD-128 with GA-327 as curing agent. An AR 2000EX rolling rheometer was used to measure the resin viscosity in a range of isothermal temperatures. Comparing the isothermal conversion-time relation with that of the isothermal viscosity-time, the isochronous relation of the isothermal viscosity-conversion was set up correspondingly. Results suggest that under the individual influence of the chemical mechanism of viscous increase, the viscosity of the resin system slowly increases with the increase of isothermal conversion, and then increases quickly when the conversion reaches a certain extent. Changing the isothermal viscosity-conversion relation to the relation of viscosity-temperature under the constant conversion, it shows that under the individual influence of the physical mechanism of viscous falling, the resin viscosity decreases with the temperature incr
Idioma: Chinês

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