Preparation method of oxidation-resistant PPS filter material and prepared modified PPS fiber
A technology of filter material and production method, applied in the chemical characteristics of fibers, melt spinning, stretch spinning, etc., can solve the problems of decreased performance of fiber products, uneven film formation on the surface of PPS fibers, and improved crystallinity, The effect of good thermal dimensional stability, good high temperature resistance and oxidant corrosion resistance
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[0028] Example 1
[0029] Preparation method of oxidation-resistant PPS filter material, comprising the following steps:
[0030] (1) Preparation of modified PPS resin
[0031] According to the mass ratio of 1:9, the polyphenylene sulfide resin slice and lignin are mixed, and the modified polyphenylene sulfide resin is prepared after heating and melting, extrusion granulation and drying;
[0032] (2) Melt spinning
[0033] The modified polyphenylene sulfide resin prepared in step (1) is spun in a melt spinning machine, through the screw extruder, melt filter, spinning box and components, wherein, the temperature of the screw extruder of the modified polyphenylene sulfide resin slice is 290 °C / 305 °C / 315 °C / 315 °C, respectively, to obtain a spinning melt, the spinning melt is sprayed by a spinning board through the slit, the spinning box temperature is 320 °C, the ring blown nitrogen gas is 325Pa, and the spinning speed is 500m / min, obtain semi-finished silk;
[0034] (3) The semi...
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[0036] Example 2
[0037] The difference between the present embodiment and Example 1 is that: the mass ratio of polyphenylene sulfide resin slices and lignin is 4:1. Other steps and process parameters are the same as In Example 1.
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[0038] Example 3
[0039] The difference between the present embodiment and Example 1 is: the mass ratio of polyphenylene sulfide resin slices and lignin is 7:3. Other steps and process parameters are the same as In Example 1.
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