Zuoze Fan, Bo Wang, Lei Zhang, Ruyun Xu, Guangxian Li, Xia Liao
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引用次数: 0
Abstract
Crosslinking behavior of liquid silicone rubber (LSR) in CO2 is important for regulation of cell structure of LSR foam. In LSR system, introduction of CO2 can change the crosslinking reaction, but the effect of the crosslinking in CO2 on foaming behavior is not clear. Here, LSR was saturated at 40 °C and 10 MPa CO2 in order to introducing more CO2 to investigate crosslinking in CO2 and foaming behavior. It was found that the obtained LSR foam had a layered cell structure, because CO2 induced the formation of crosslinking layer, and hindered further crosslinking between layers by increasing the distance between layers. Compressive stress perpendicular to the layer of LSR foam was 3.1 times higher than that along the layer when the strain was 50 %. This study provides a new idea for the regulation of cell structure of thermosetting polymers.
期刊介绍：
The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics.
Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.
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