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Method for preparing modified basalt fiber/polyphenylene sulfide compound filter material through dip coating

A technology of basalt fiber and polyphenylene sulfide, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of high spinning temperature of polyphenylene sulfide, poor fluidity, deep color of products, etc., and achieve improvement Filtration performance and mechanical properties, strong mechanical strength, smooth appearance

Inactive Publication Date: 2014-12-10
TAICANG SULUN TEXTILE CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual processing and molding process, fiber-grade polyphenylene sulfide has the disadvantages of high spinning temperature, high melt viscosity, and poor fluidity. The product has darker color and rough hand feeling.

Method used

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  • Method for preparing modified basalt fiber/polyphenylene sulfide compound filter material through dip coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of hyperbranched polyphenylene sulfide: Add 10g of 3,4-dichlorothiophenol, 13.4g of anhydrous potassium carbonate and 80mL of N-methylpyrrolidone into a 250mL three-necked flask, heat to 150°C, and keep warm for 8.5h. The product was washed and filtered with hydrochloric acid, dissolved in tetrahydrofuran, extracted with hexane, filtered and dried to obtain light brown hyperbranched PPS powder with a degree of polymerization of 8-12.

[0023] Preparation of modified polyphenylene sulfide fibers: respectively place linear polyphenylene sulfide slices and hyperbranched polyphenylene sulfide powder in a drying oven at 130°C for 6 hours, mix them at a weight ratio of 4:1, and put the raw materials into a micro The twin-screw extruder is blended and sent out for winding, and the spinning temperature is 320°C.

[0024] Preparation of modified basalt fiber / polyphenylene sulfide composite filter base cloth: open and mix the modified polyphenylene sulfide fiber and b...

Embodiment 2

[0027] Preparation of hyperbranched polyphenylene sulfide: Add 10g of 3,4-dichlorothiophenol, 13.4g of anhydrous potassium carbonate and 80mL of N-methylpyrrolidone into a 250mL three-necked flask, heat to 150°C, and keep warm for 8.5h. The product was washed and filtered with hydrochloric acid, dissolved in tetrahydrofuran, extracted with hexane, filtered and dried to obtain light brown hyperbranched PPS powder with a degree of polymerization of 8-12.

[0028] Preparation of modified polyphenylene sulfide fibers: respectively place linear polyphenylene sulfide slices and hyperbranched polyphenylene sulfide powder in a drying oven at 130°C for 6 hours, mix them at a weight ratio of 9:1, and put the raw materials into a micro The twin-screw extruder is blended and sent out for winding, and the spinning temperature is 320°C.

[0029] Prepare modified basalt fiber / polyphenylene sulfide composite filter base cloth: open and mix modified polyphenylene sulfide fiber and basalt fiber...

Embodiment 3

[0032] Preparation of hyperbranched polyphenylene sulfide: Add 10g of 3,4-dichlorothiophenol, 13.4g of anhydrous potassium carbonate and 80mL of N-methylpyrrolidone into a 250mL three-necked flask, heat to 150°C, and keep warm for 8.5h. The product was washed and filtered with hydrochloric acid, dissolved in tetrahydrofuran, extracted with hexane, filtered and dried to obtain light brown hyperbranched PPS powder with a degree of polymerization of 8-12.

[0033] Preparation of modified polyphenylene sulfide fibers: respectively place linear polyphenylene sulfide slices and hyperbranched polyphenylene sulfide powder in a drying oven at 130°C for 6 hours, mix them at a weight ratio of 5:1, and put the raw materials into a micro The twin-screw extruder is blended and sent out for winding, and the spinning temperature is 320°C.

[0034] Prepare modified basalt fiber / polyphenylene sulfide composite filter material base cloth: open and mix the modified polyphenylene sulfide fiber and...

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Abstract

A method for preparing a modified basalt fiber / polyphenylene sulfide compound filter material through dip coating comprises the following steps: the blended spinning is performed on linear polyphenylene sulfide and hyperbranched polyphenylene sulfide, so that modified polyphenylene sulfide fibers are prepared; a compound base fabric is prepared from the basalt fibers and the modified polyphenylene sulfide fibers through a needling technology; a fluoropolymer, a fluoride-containing silane coupling agent and deionized water are uniformly mixed through ultrasonic to prepare into a fluoropolymer emulsion; the compound base fabric is dipped in the emulsion and processed by the processes of padder rolling, pre-drying, baking, tension bracket processing and winding, so that the finished product is prepared. The compound filter material prepared through the preparing method has good thermostability, great corrosion resistance and high mechanical strength, the dispersibility and the compactness of the finished product fibers are improved, and the preparing process is simple, the cost is relatively low and the compound filter material is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a method for preparing a composite filter material, in particular to a method for preparing a modified basalt fiber / polyphenylene sulfide composite filter material by dipping and coating. Background technique [0002] At present, high-temperature-resistant filter materials have been widely used in industrial fields such as power generation and cement. Filter materials are the main components of gas-solid separation devices, and their performance directly determines the quality of the filter. In order to improve the filtration accuracy, in addition to continuously improving the preparation process of the filter material itself in production, people also use post-finishing technologies such as impregnation, coating, and film coating to improve the surface and internal structure of the filter material, so as to obtain uniform structure and size. Stable and efficient filter material. [0003] In actual production, it was found tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B19/04B01D39/14
Inventor 袁振其
Owner TAICANG SULUN TEXTILE CHEM FIBER
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