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A kind of polysulfone aramid fiber, slurry to be spun and manufacturing method thereof

A manufacturing method and slurry technology, applied in spinning solution preparation, single-component copolyamide rayon, wet spinning, etc., can solve the problems of cumbersome post-processing steps, harsh reaction conditions, equipment corrosion, etc., and achieve high strength Enhanced, high solubility, enhanced neutralization efficiency

Active Publication Date: 2020-08-07
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a polysulfone aramid fiber, to be spun Slurry and its manufacturing method

Method used

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  • A kind of polysulfone aramid fiber, slurry to be spun and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 19.864 grams of 4,4'-diaminodiphenylsulfone (0.08mol) and 4.966 grams of 3,3'-diaminodiphenylsulfone (0.02mol) in sequence to a dry 500mL three-neck flask, add 210mL of anhydrous N,N' - Dimethylacetamide (DMAc), stirred and dissolved to obtain a colorless clear solution; cooled to an internal temperature of 0°C with an ice-water bath, then added 18.272 grams of terephthaloyl chloride (0.09mol), and stirred at 0°C for half an hour Then rise to 20°C and stir for half an hour; then raise the temperature to 50°C and add 2.036 grams of terephthaloyl chloride (0.01mol), and continue stirring at 50°C for 1 hour, then add 70.734 grams of trioctylamine (0.02mol ) neutralization, after stirring at 35° C. for 1 hour, a neutral slurry to be spun was obtained.

[0041] The slurry is spun with wet spinning equipment: the spinning slurry is extruded into the coagulation bath through a spinneret with a diameter of 0.07 mm and a number of holes of 10, and the coagulation bath is com...

Embodiment 2

[0043] Add 20.692 grams of 4,4'-diaminodiphenylsulfone (0.0833mol) and 4.138 grams of 3,3'-diaminodiphenylsulfone (0.0167mol) in sequence to a dry 500mL three-necked flask, and add 235mL of anhydrous N,N' -Dimethylacetamide (DMAc), stirred and dissolved to obtain a colorless clear solution; cooled to an internal temperature of 0°C with an ice-water bath, then added 17.257 grams of terephthaloyl chloride (0.085mol), and stirred at 0°C for half an hour Then rise to 25°C and stir for half an hour; then heat up to 60°C and add 3.045 grams of terephthaloyl chloride (0.015mol), and continue stirring at 60°C for 1 hour, then add 33.45 grams of benzyltrimethylammonium hydroxide ( 0.02mol) neutralized, at 25 ° C, after stirring for 1 hour, a nearly neutral spinning slurry was obtained.

[0044] The slurry is spun with wet spinning equipment: the spinning slurry is extruded into the coagulation bath through a spinneret with a diameter of 0.07 mm and a number of holes of 10, and the coag...

Embodiment 3

[0046] Add 21.279 grams of 4,4'-diaminodiphenylsulfone (0.0857mol) and 3.551 grams of 3,3'-diaminodiphenylsulfone (0.0143mol) in sequence to a dry 500mL three-necked flask, add 280mL of anhydrous N,N' -Dimethylacetamide (DMAc), stirred and dissolved to obtain a colorless clear solution; cooled to an internal temperature of 0°C with an ice-water bath, then added 16.242 grams of terephthaloyl chloride (0.08mol), and stirred at 0°C for half an hour Then rise to 25°C and stir for half an hour; then heat up to 80°C and add 4.060 grams of terephthaloyl chloride (0.02mol), and continue stirring at 80°C for 1 hour, then add 41.866 grams of benzyltriethylammonium hydroxide ( 0.02mol) and neutralized at 45°C to obtain a neutral slurry to be spun after stirring for 1 hour.

[0047] The slurry is spun with wet spinning equipment: the spinning slurry is extruded into the coagulation bath through a spinneret with a diameter of 0.07 mm and a number of holes of 10, and the coagulation bath is...

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Abstract

The invention discloses a polysulfone aramid fiber, a to-be-spun slurry and a preparation method thereof. The method includes the steps of: 1. in a solvent, subjecting 4, 4'-diaminodiphenyl sulfone, 3, 3'-diaminodiphenyl sulfone and terephthaloyl chloride to prepolymerization reaction at a temperature ranging from -20DEG C to 25DEG C, with 4, 4'-diaminodiphenyl sulfone and 3, 3'-diaminodiphenyl sulfone being in a mass ratio of 2-6; 2. subjecting the prepolymerization product and paraphthaloyl chloride to polymerization reaction at a temperature of 30-100DEG C; and 3. mixing the polymerization product with organic alkali to carry out neutralization reaction, thus obtaining the to-be-spun slurry. The method provided by the invention maintains a high spinning slurry solid content, acquires polysulfone amide fiber with high breaking strength and good heat resistant and flame retardant performance, enhances the neutralization efficiency, and is non corrosive to follow-up spinning equipment; the generated salt has no need of filtration for removal, the high equipment cost caused by corrosion is saved, and the fiber production efficiency is improved.

Description

technical field [0001] The invention relates to a polysulfone aramid fiber, a slurry to be spun and a manufacturing method thereof. Background technique [0002] Heat-resistant and flame-retardant fibers are a class of high-performance fibers with heat-resistant and flame-retardant properties. The heat resistance of the fiber usually means that the fiber can be used for a long time above 180 ° C, or can be used instantly at a higher temperature; and the flame retardancy of the fiber means that the limiting oxygen index (Limiting Oxygen Index, LOI) of the fiber is greater than 21% ( That is, the oxygen content in the air), the higher the limit oxygen index LOI, the better the flame retardant performance of the fiber. Common fibers with heat-resistant and flame-retardant properties include polyaramid fibers, polyaraimide fibers, polyphenylene sulfide fibers, and polyetheretherketone fibers. At present, the main heat-resistant and flame-retardant fiber in the domestic and int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/48C08G69/42D01F6/80D01D1/02D01D5/06D01D10/06D01D5/12
Inventor 姜标徐兵周小安邢萍
Owner SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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