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High temperature-resistant polyphenylene sulfide hollow fiber membrane and preparation method thereof

A technology of polyphenylene sulfide and high temperature resistance, which is applied in the field of preparation of filter materials, can solve the problems of low recycling rate, low production efficiency, long process flow, etc., and achieves the effects of high production efficiency, low cost and simple process

Inactive Publication Date: 2017-10-03
DYNABAT NEW ENERGY SCI & TECH CO CLD FUJIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production technology of polyphenylene sulfide filter material has disadvantages such as long process flow, low production efficiency, high cost and low recycling rate.

Method used

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  • High temperature-resistant polyphenylene sulfide hollow fiber membrane and preparation method thereof
  • High temperature-resistant polyphenylene sulfide hollow fiber membrane and preparation method thereof
  • High temperature-resistant polyphenylene sulfide hollow fiber membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a high-temperature-resistant polyphenylene sulfide hollow fiber membrane, comprising:

[0028] Step 1, prepare polyphenylene sulfide (PPS) and composite porogen, the mass ratio of polyphenylene sulfide and composite porogen is 50-90:10-50, wherein polyphenylene sulfide accounts for 50% ~90%, the composite porogen accounts for 10%~50%, the two are 100% altogether; Among the present embodiment, weigh the PPS of 900g and the nano CaCO of 100g 3 ;

[0029] Step 2, mix the above-mentioned preparations in a high-speed mixer until uniform;

[0030] Step 3, send the uniformly mixed stock into the extruder; in this embodiment: the temperature of each zone of the twin-screw extruder is set to: 320°C in the melting zone (the uniformly mixed stock enters the extruder at this temperature), The melt blending zone is 315°C, and the spinneret is 310°C; feed the uniformly mixed preparation feeder into the twin-screw extruder at a feed rate of 4kg / h; inject super...

Embodiment 2

[0035] It differs from Example 1 in that: a method for preparing a high-temperature-resistant polyphenylene sulfide hollow fiber membrane, comprising:

[0036] Step 1, weigh 900g of PPS and 100g of nano-CaCO 3 ;

[0037] Step 2, mix the above-mentioned preparations in a high-speed mixer until uniform;

[0038] Step 3, feeding the uniformly mixed preparations into the extruder; in this embodiment: the temperature of each zone of the twin-screw extruder is set as: melting zone 290°C, melt blending zone 290°C, spinneret 270°C; Feed the uniformly mixed preparation feeder into the twin-screw extruder at a feeding speed of 4kg / h; inject supercritical carbon dioxide into the third heating zone of the extruder, the input flow rate is 2ml / min, and the injection temperature is 60°C , pressure 10MPa. When the supercritical carbon dioxide is injected into the extruder by a high-pressure injection pump, the parameters are: temperature 35-65° C., pressure 8-15 MPa, and output flow 0.1-20...

Embodiment 3

[0044] It differs from Example 1 in that: Step 1: Weigh 900g of PPS and 100g of nano-SiO 2 ;

[0045] Step 2, mix the above-mentioned preparations in a high-speed mixer until uniform;

[0046] Step 3, feeding the uniformly mixed preparations into the extruder; in this embodiment: the temperature of each zone of the twin-screw extruder is set as: melting zone 290°C, melt blending zone 290°C, spinneret 260°C; Feed the uniformly mixed preparation feeder into the twin-screw extruder at a feeding speed of 3kg / h; inject supercritical carbon dioxide into the third heating zone of the extruder, the input flow rate is 5ml / min, and the injection temperature is 40°C , pressure 12MPa.

[0047] Step 4, the uniformly mixed preparation and supercritical carbon dioxide are melt-blended in the extruder, and after melt-blending, they are extruded through the hollow spinneret assembly of the extruder, and the extruded parts are stretched, drawn, cooled and shaped, and then subjected to subsequ...

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Abstract

The invention discloses a high temperature-resistant polyphenylene sulfide hollow fiber membrane and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing polyphenylene sulfide and a composite pore-forming agent with a mass part ratio being (50 to 90) : (10 to 50); step 2, mixing the ready materials until the materials are uniform; step 3, sending the uniformly mixed ready material in an extruder; and step 4, melting and blending the uniformly mixed ready material and supercritical carbon dioxide in the extruder, hollowly extruding a mixture after melting and blending, and carrying out drawing traction, cooling and forming on an extrusion to obtain the high temperature-resistant polyphenylene sulfide hollow fiber membrane. The preparation method has the advantages that the hollow fiber membrane obtained by preparation is large in flux and high in strength; the processing temperature of the polyphenylene sulfide with the temperature being 20-60 DEG C can be lowered, an organic solvent is not used in a preparation process, and the preparation method is low-cost, is easy for processing, and is environmentally friendly.

Description

technical field [0001] The invention relates to a preparation technology of a filter material, in particular to a high-temperature-resistant polyphenylene sulfide hollow fiber membrane and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of modern industry, my country's air pollution has become more and more serious. In this regard, the state has proposed energy-saving and emission-reduction controls for industry. At the same time, various air purification products have appeared in people's lives, and filter materials made of polyphenylene sulfide have become the focus of industrial applications. [0003] The polyphenylene sulfide has excellent thermal stability, chemical stability, corrosion resistance and electrical properties, etc. Therefore, its fiber fabric has a long service life in a wet acidic environment at a contact temperature of 235°C and an operating temperature of 190°C. Up to 3 years or more. [0004] At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/08B01D69/02B01D71/66B01D67/00
CPCB01D67/0002B01D69/08B01D69/088B01D71/66B01D2325/32B01D2325/022B01D2325/22B01D2323/225B01D2323/18B01D2323/08B01D2323/10
Inventor 沈剑辉马洪波刘进林炳辉王艳伟
Owner DYNABAT NEW ENERGY SCI & TECH CO CLD FUJIAN
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