Production method of polyphenylsulphone physical foaming sheet and production system thereof
A polyphenylene sulfone and physical foaming technology is applied in the field of polymer material processing to achieve the effects of fast heat conduction, high efficiency and excellent high temperature barrier properties
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[0119] Example 1
[0120] The steps of a production method of a polyphenylsulfone physical foamed sheet are as follows:
[0121] 1. According to the proportion of parts by weight, 88 kg of polyphenylene sulfone (PPSU) resin and 0.1 kg of nucleating agent are added to the twin screw extruder 2 through the feeder (feeding system) 1 for shear mixing. In the fourth barrel of the twin-screw extruder 2, the metering pump of the blowing agent injection device 3 is used to inject 0.1 kg of liquid carbon dioxide blowing agent, carbon dioxide and PPSU resin nucleating agent, and the twin screw extruder is fully mixed to form Mixed melt, the temperature of the mixed melt is 250 degrees, the mixed melt (melt) is filtered by the screen changer 4 to filter the impurities in the mixed melt, and the heat exchanger 5 is used to reduce the temperature of the mixed melt to make the mixed melt The temperature uniformly drops to about 220 degrees, and it is extruded through the extrusion die 6 and the...
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[0125] Example 2
[0126] The steps of a production method of a polyphenylsulfone physical foamed sheet are as follows:
[0127] 1. Add 100kg of polyphenylene sulfone (PPSU) resin and 2kg of nucleating agent to the twin screw extruder 2 through the feeder (feeding system) 1 according to the weight ratio. The fourth section of the twin-screw extruder 2 uses the metering pump of the foaming agent injection device 3 to inject 10 kg of liquid carbon dioxide foaming agent, carbon dioxide and PPSU resin nucleating agent, and the twin-screw extruder is fully mixed to form a mixed melt The temperature of the mixed melt is 260 degrees, and the mixed melt (melt) is filtered by the screen changer 4 to reduce the temperature of the mixed melt through the heat exchanger 5 to make the temperature of the mixed melt uniform. The temperature drops to about 220 degrees, and it is extruded through the extrusion die 6 and the extrusion die 6-1. The mixed melt containing the foaming agent quickly foa...
Example Embodiment
[0131] Example 3
[0132] The steps of a production method of a polyphenylsulfone physical foamed sheet are as follows:
[0133] 1. According to the proportion by weight, 95kg of polyphenylene sulfone (PPSU) resin and 1kg of nucleating agent are added to the twin screw extruder 2 through the feeder (feeding system) 1 for shear mixing. The fourth section of the twin-screw extruder 2 adopts the metering pump of the foaming agent injection device 3 to inject 5 kg of liquid carbon dioxide foaming agent, carbon dioxide and PPSU resin nucleating agent, and the twin-screw extruder is fully mixed to form a mixed melt The temperature of the mixed melt is 255 degrees. The mixed melt (melt) is filtered by the screen changer 4 to reduce the temperature of the mixed melt through the heat exchanger 5 to make the temperature of the mixed melt uniform. The temperature drops to about 220 degrees, and it is extruded through the extrusion die 6 and the extrusion die 6-1. The mixed melt containing t...
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