A comparative study is performed between elongational flow data obtained from fiber spinning and a numerical scheme based on the expressions derived from an anisotropic FENE dumbbell model, with conformation-dependent hydrodynamic friction, coupled with a differential momentum balance made along the spinning filament. Extensional flow data was obtained by using the Gupta-Sridhar extensional viscometer. The test fluid was an aqueous solution of a copolymer of sodium acrylate and acrylamide (Alcomer 120). From the information obtained by this comparison, we assess the influence of preshearing and other factors on the rheological behavior of polymer solutions using this technique.

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Inorganic element chemistry is a compulsory course for students majored in chemistry or materials. This paper constructs the chain of inorganic element chemical ideological and political knowledge from the aspects of the development history of chemical element periodic table, the discovery history of chemical elements, the history of ancient Chinese science, the example of Chinese chemists, the double blade sword of chemical elements, and expanding the time and space of course ideological and political education. The chemistry education with better knowledge teaching, ability training and value shaping has been well defined.

In the space environments, the size and weight of composite materials will produce small changes. In order to measure the small changes accurately, a micro-deformation measurement device has been designed. The carbon fiber tube was made from cyanate ester resin or epoxy resin was tested in vacuum and hygrothermal environments. The deformation in the vacuum test is -1.7 to 3.8 microns, in the hygrothermal test, the deformation is -1.3 to -6.4 microns. The same as theoretical analysis, the environmental stability of cyanate ester resin better than epoxy resin.