A new diffusion-control model based on the power law distribution for the cure kinetics of epoxy-anhydride thermoset resins

被引：3

作者：

Wang, Kun ^{[1
]}

Chen, Xin ^{[1
]}

Yu, Yongguang ^{[2
]}

Zhang, Chong ^{[1
]}

Ren, Guojian ^{[2
]}

Yang, Wei ^{[1
]}

Qiao, Jian ^{[1
]}

Chen, Yun ^{[1
]}

Yin, Li ^{[1
]}

Yan, Bingyue ^{[1
]}

机构：

[1] State Grid Smart Grid Res Inst Co Ltd, State Key Lab Adv Power Transmiss Technol, Beijing 100044, Peoples R China

[2] Beijing Jiaotong Univ, Sch Math & Stat, Beijing 100044, Peoples R China

来源：

POLYMER BULLETIN | 2023年 / 80卷 / 08期

关键词：

Diffusion control; Power law; Cure kinetics; Epoxy-anhydride; FLOW; POLYMERIZATION; EPOXIDES; BEHAVIOR; NETWORK; SYSTEM; FLUIDS; TG;

D O I：

10.1007/s00289-022-04462-1

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this study, a new theoretical model is developed to describe the effect of diffusional limitations on the cure kinetics of epoxy-anhydride resins based on the free volume theory. Different from the previous models, a new diffusion factor is developed by introducing the power law to describe the average distribution of free volume, in which, a fractional exponent related to the power law distribution is established to describe the effect of diffusion. The fractional exponent is verified to be actually temperature dependent by using experimental data. Then, a new diffusion-control model is obtained by modifying Kamal's autocatalytic model with the new diffusion factor. Finally, the isothermal cure data were fitted with the new model very well. The resultant kinetic model can describe the autocatalytic reaction as well as diffusion-limited regimes, and also the temperature-dependent ultimate conversion.

引用

页码：8547 / 8563

页数：17

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