Nursing Reagent-Ningbo Institute of Materials, Chinese Academy of Sciences successfully developed high-pressure fluid (foaming) metering injection system
2024-11-01 14:03:31
The Ningbo Institute of Materials, Chinese Academy of Sciences has successfully developed a high-pressure fluid (foaming) metering and injection system Developed a high-pressure fluid (foaming) metering injection system. Foaming technology is mainly through physical injection or chemical reaction method, the interior of the plastic is filled with gas, and finally foaming is formed. Physical foam has high application value due to its relatively low cost and no pollution. In the physical foaming process, the key technology of microcellular foaming is the quantitative and uniform injection of gas and it is relatively easy to dissolve. The amount of gas injection and the degree of fusion directly lead to the size and distribution density of cells in the foamed product The size and distribution density of the cells directly affect the final quality of the product. At present, there is no domestic supercritical fluid injection equipment, and the cost of imported equipment is very high. The lack of key equipment directly limits the application of supercritical physical microcellular foaming technology. Therefore, there is an urgent need to develop a constant pressure and constant flow injection system that can achieve supercritical fluids to meet the demand. The intelligent measurement and control technology and application team based on the analysis of the demand for fluid pressurization and metering, use compressed air as the power, and adopt the method of double pumps in series and section control to precompress and pressurize the gas. By controlling the pressure decay in the specific container of the fluid and the start frequency of the booster pump, the flow rate of the metering fluid is comprehensively analyzed. After several modifications and tests, it was finally developed into a high-pressure fluid metering and injection system with independent intellectual property rights and a cost much lower than similar foreign products.
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