Treatment method of anti-ultraviolet aromatic high-performance fiber

A technology of high-performance fiber and treatment method, applied in the direction of fiber treatment, light-resistant fiber, fiber type, etc., can solve the problems of initial fiber strength drop, inability to meet the requirements of use, clogging of spinneret holes, etc., to improve the strength retention rate, Long-lasting anti-ultraviolet function, the effect of broadening the application range

Active Publication Date: 2018-08-14
CHENGDU TEXTILE COLLEGE
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Although the fiber strength retention rate has been improved by this treatment method, its anti-ultraviolet performance is equivalent to that of uncoated fibers after three times of washing (Dong Linan. Research on photoaging and stabilization of aromatic polyoxadiazole fibers [D]. Chengdu : Sichuan University, 2010; Yang Xiao. Research on aging and protection of poly 1,3,4-oxadiazole (POD) [D]. Chengdu: Sichuan University, 2011); There are azo structure substances that are selectively absorbed to protect the heterocyclic structure in the macromolecular chain, but these azo structure substances not only easily cause the spinneret holes to be blocked during the spinning process, but also the initial strength of the fiber decreases (Zhou W, Yang X, Jia E, Wang X, Xu J, Ye G.Ultraviolet resistance of azo-containing poly(1,3,4-oxadiazole) fibers[J].Polymer Degradation and Stability,2013,98(3): 691-696); (3) choose the disperse dye that contains azo structure to dye the fiber, but, because the azo group in the dyestuff is limited, the anti-ultraviolet property of fiber can only improve about 30%, far can not meet the use requirement (Ji Changqing, Zhang Zaixing, Li Wentao, Xing Tieling, Chen Guoqiang. Effects of disperse dyes on the light stability of modified polyaryloxadiazole fibers[J]. Printing and Dyeing, 2014,40(9):1-4); (4) Using direct The method of finishing is to use water-soluble octa(γ-aminopropyl)silsesquioxane with anti-ultraviolet function as a finishing agent to treat the surface of fibers. This method is simple to operate and requires less equipment. However, due to the The method uses water-soluble POSS with amino groups. After the fibers are treated by padding, baking and other methods, the POSS molecules can only be fixed in the form of adsorption and rely on van der Waals force to fix the defects on the surface of the fibers and the gaps of the fibrils.

Method used

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  • Treatment method of anti-ultraviolet aromatic high-performance fiber
  • Treatment method of anti-ultraviolet aromatic high-performance fiber
  • Treatment method of anti-ultraviolet aromatic high-performance fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0044] 0.3 parts of octavinyl silsesquioxane, 0.3 parts of octapropenyl silsesquioxane, and 0.8 parts of Disperse Red 60 dye which were ground into powders with a particle size of 0.5-1μm were mixed uniformly. Under nitrogen atmosphere, together with 0.15 Add parts of anhydrous aluminum chloride to 60 parts of carbon disulfide and 60 parts of carbon tetrachloride and stir until fully dissolved, then heat up to the boiling point of the mixed solvent, keep refluxing for 24 hours; after stopping heating, cool the mixed liquid to 0 with ice water ℃, then add 0.4 parts of triethylamine and 0.3 parts of diethylamine mixed solution and stir evenly, filter under reduced pressure to remove insoluble catalyst, the filtrate is distilled under reduced pressure to remove the solvent to obtain the crude product of anti-ultraviolet treatment agent; add the crude product to 250 parts In dichloromethane, reflux extraction in a Soxhlet extractor for 18 hours, followed by vacuum filtration to remo...

Embodiment 2

[0046] Mix 0.6 parts of octapropenyl silsesquioxane and 1.2 parts of Disperse Red 60 dye respectively ground into powders with a particle size of 0.5-1μm. Under nitrogen atmosphere, add 60 parts of benzene together with 0.15 parts of anhydrous ferric chloride. Stir in medium until it is fully dissolved, then heat to the boiling point of the mixed solvent, keep refluxing for 30 hours; after stopping heating, cool the mixed liquid to 2°C with ice water, then add 1.9 parts of diethylamine and stir evenly, filter under reduced pressure to remove Insoluble catalyst, the filtrate is distilled under reduced pressure to remove the solvent to obtain the crude product of anti-ultraviolet treatment agent; add the crude product to 65 parts of dichloromethane and 65 parts of toluene, reflux extraction in a Soxhlet extractor for 30 hours, and then perform vacuum filtration. The undissolved original dye is removed, and the filtrate is finally distilled under reduced pressure to obtain a refine...

Embodiment 3

[0048] Mix 0.6 parts of octabutenyl silsesquioxane and 3.2 parts of Disperse Yellow 42 dye which are respectively ground into powders with a particle size of 0.5-1μm. Under nitrogen atmosphere, together with 0.22 parts of anhydrous ferric chloride and 0.23 parts of anhydrous Magnesium chloride was added to 300 parts of carbon disulfide and 200 parts of benzene and stirred until fully dissolved, then heated to the boiling point of the mixed solvent, kept refluxed for 18 hours; after the heating was stopped, the mixture was cooled to 4°C with ice water, and then 1.5 parts of diethyl Stir the mixture of amine and 1.5 parts of dichloromethane evenly, filter under reduced pressure to remove the insoluble catalyst, and distill the filtrate under reduced pressure to remove the solvent to obtain the crude product of anti-ultraviolet treatment agent; add 450 parts of dichloromethane and 340 parts of trichloride to the crude product The methane is refluxed and extracted in a Soxhlet extra...

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Abstract

The invention discloses a treatment method of an ultraviolet-resistant aromatic high-performance fiber. The method comprises the steps that an ultraviolet-resistant treating agent is prepared into a treating solution with the bath ratio of 15-50 to 1 according to the fiber weight of 1.5-5%, even stirring is performed, the pH of the ultraviolet-resistant treating agent is regulated to be 5-7, then the aromatic high-performance fiber is put in the ultraviolet-resistant treating agent, and treatment is performed according to the steps and conditions of a conventional high temperature and high pressure dyeing process (shown in the description). By the adoption of the treatment method, the aromatic high-performance fiber can play a lasting ultraviolet-resistant function, can also synchronously achieve corresponding fiber dyeing, the strength retention rate of the fiber subjected to ultraviolet irradiation is effectively improved, an operation process is simple, and the conditions are easy to control. The method is suitable for industrialized production.

Description

Technical field [0001] The invention belongs to the technical field of aromatic high-performance fibers and their preparation, and specifically relates to a processing method for ultraviolet-resistant aromatic high-performance fibers. Background technique [0002] Aromatic high-performance fibers such as fully aromatic polyamide (aramid) and polyparaphenylene 1,3,4-oxadiazole (p-POD) have excellent physical and mechanical, thermal stability, electrical insulation, Solvent resistance, special conductivity, electroluminescence and other properties, often used as high temperature resistant filter cloth, permeable membrane and insulation protection material (Zhang Z, Ye G, Li W, Li T, XuJ. Influence of sulfuric acid bath on morphological structure and mechanicalproperties of poly(p-phenylene-1,3,4-oxadiazole)fibers[J].Journal of AppliedPolymer Science,2009,114(3):1485-1493;Schulz B,Bruma M,Brehmer L. AromaticPoly(1,3,4-Oxadiazoe)s as Advanced materials[J].Advanced Materials,1997,9(8...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/513D06M23/00D06P3/26D06P1/16D06M101/36
CPCD06M13/5135D06M23/00D06M2101/36D06M2200/25D06P1/16D06P3/004D06P3/26
Inventor 管宇冒亚红
Owner CHENGDU TEXTILE COLLEGE
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