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Preparation method of wear-resistant and antioxidant polyphenylene sulfide filter

A polyphenylene sulfide, anti-oxidation technology, applied in chemical instruments and methods, separation methods, filtration separation and other directions, can solve the problems of limited application fields, difficult melt processability, cold flow properties, etc., to improve filtration efficiency, resistance to The effect of improving the abrasiveness

Active Publication Date: 2014-01-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is precisely because PTFE materials have the above physical and chemical properties that there are three major disadvantages in the processing process: cold flow, difficult welding, and difficult melt processability, which limits its application fields
At present, there are few reports on improving the wear resistance, oxidation resistance and filtration efficiency of PPS filter materials by compounding nanoparticle dispersions and PTFE emulsions.

Method used

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  • Preparation method of wear-resistant and antioxidant polyphenylene sulfide filter
  • Preparation method of wear-resistant and antioxidant polyphenylene sulfide filter
  • Preparation method of wear-resistant and antioxidant polyphenylene sulfide filter

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Get 90 parts of deionized water, add 4 parts of nano-SiO after vacuum drying to it 2 , ultrasonically dispersed for 30 minutes, added 0.3 parts of silane coupling agent, stirred on a magnetic stirrer for 30 minutes, and then ultrasonicated for 40 minutes. Add 0.2 parts of sodium dodecylbenzenesulfonate and 3 parts of triethanolamine, stir on a magnetic stirrer for 30 minutes, and ultrasonically disperse for 40 minutes to obtain uniformly dispersed nano-SiO 2 water dispersion. For its particle size distribution, see figure 1 .

example 2

[0035] With the nano-SiO of step (1) gained 2 The water dispersion is mixed with PTFE emulsion, adhesive, and deionized water in a certain proportion, and stirred on a magnetic stirrer for 30 minutes to obtain uniformly mixed nano-SiO in different proportions. 2 / PTFE composite treatment fluid, spare. Different configurations are shown in Table 1.

[0036] Table 1

[0037]

example 3

[0039] Soak the PPS filter material sample in a mixed solution containing 20-30g / L NaOH and 5-10g / L penetrant for pretreatment, the bath ratio is 10-20:1, heat it in a water bath, the water bath temperature is 80- 100°C. After 0.5-1.5 hours of treatment, the samples were taken out, cleaned, and dried in an oven. The treated PPS sample is completely impregnated in the different proportioning nano-SiO shown in example 2 2 / PTFE composite treatment solution, the immersion time is 0.5-1.5min, and the bath ratio is 10-20:1. The excess liquid is rolled off on a rolling car, and the excess liquid is 60-80%, and then placed in a shaping dryer for baking at a temperature of 200-260° C. for 2-3 minutes. The wear-resistant and anti-oxidation polyphenylene sulfide filter material is obtained. Nano-SiO with different formulations 2 The corresponding numbers of the PPS samples treated with / PTFE composite treatment solution are marked as 0#, 1#, 2#, 3#, 4#, 5#.

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Abstract

The invention relates to a preparation method of a wear-resistant and antioxidant polyphenylene sulfide (PPS) filter. The invention is realized through the following technical scheme: impregnating the PPS filter pretreated with lye and a penetrant in a nano SiO2 / PTFE composite treating fluid; rolling off excessive liquid and carrying out high temperature setting and drying to obtain the wear-resistant and antioxidant polyphenylene sulfide filter. The method is characterized in that impregnation treatment on the PPS filter by the nano SiO2 / PTFE composite solution improves the wear performance of an antioxidant film on the fiber surface of PPS and realizes the dual functions of wear resistance and antioxidation of the PPS filter. Measured by experiment, the PPS filter treated with the nano SiO2 / PTFE composite treating liquid has wear resistance increased by more than 20% than the PPS filter only treated with PTFE solution. At the same time, the invention can improve the filtration efficiency of the filter in a certain extent. The process provided by the invention is simple and convenient for industrialization, and can be used as an industrial soot dust filter for a bag type dust collector.

Description

technical field [0001] The invention relates to a preparation method of a wear-resistant and anti-oxidation polyphenylene sulfide (PPS) filter material, which belongs to the technical field of high-temperature flue gas dust removal materials. Background technique [0002] Due to the advantages of high dust removal efficiency and relatively simple process, bag filter is widely used in the field of industrial dust filtration. Polyphenylene sulfide (PPS) has excellent properties such as high temperature resistance, flame retardancy, corrosion resistance, and good mechanics, so it is used in the field of high temperature bag dust removal, especially in some places with high humidity and strong corrosion. It is widely used in flue gas filtration. The disadvantages of PPS, such as poor oxidation resistance and poor wear resistance, greatly limit its application range, and the development of PPS structure-functional integration materials has attracted great attention from scholars...

Claims

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Application Information

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IPC IPC(8): B01D39/16B01D46/02
Inventor 邓炳耀余琴刘庆生
Owner JIANGNAN UNIV
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