检索结果-南通市图书馆

The high quality single-phase solution of CO2/ Polystyrene was achieved,by analyzing the influential factors for polymer microcellular foaming *** curve of pressure distribution along the barrel was *** axial position of gas-injecting port on the barrel was chosen form the results of stable foaming,and the number of gas-injecting ports in the circumference of the barrel was determined from the CO2 solubility in *** effect of the screw rotation speed on CO2 solubility was studied,and the effects of pressure difference between the gas and the polymer melt on gas-injecting process and on the foaming stability were *** influence of the gas temperature before injection on the single-phase of CO2/Polystyrene solution also was studied.

关键词： polymer extrusion foaming solubility single-phase solution

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