Treatment method of ultraviolet-resistant aromatic high-performance fiber

A technology of high-performance fibers and processing methods, which is applied in the direction of fiber processing, light-resistant fibers, fiber types, etc., can solve problems such as failure to meet the use requirements, decrease in initial strength of fibers, and blockage of spinneret holes, etc., to achieve long-lasting anti-ultraviolet function, The effect of improving the strong retention rate and widening the application range

Active Publication Date: 2017-02-22
CHENGDU TEXTILE COLLEGE
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  • Abstract
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  • Application Information

AI Technical Summary

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Mix 0.3 parts of octavinyl silsesquioxane, 0.3 parts of octapropenyl silsesquioxane, and 0.8 parts of disperse red 60 dye, which are ground into powders with a particle size of 0.5 to 1 μm, and mix evenly. Add 60 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 warm and reflux for 24 hours; after stopping heating, cool the mixed solution to 0 ℃, then add 0.4 parts of triethylamine and 0.3 parts of diethylamine mixture and stir evenly, filter under reduced pressure, remove insoluble catalyst, and distill the filtrate 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, then filter under reduced pressure to remove the undissolved original dye, and finally distil...

Embodiment 2

[0046] Mix 0.6 parts of octapropenyl silsesquioxane and 1.2 parts of disperse red 60 dye, which are ground into powders with a particle size of 0.5-1 μm, and mix evenly. Add 60 parts of benzene together with 0.15 parts of anhydrous ferric chloride under nitrogen atmosphere. Stir in medium until fully dissolved, then raise the temperature to the boiling point of the mixed solvent, keep warm and reflux for 30 hours; after stopping heating, cool the mixed solution to 2°C with ice water, then add 1.9 parts of diethylamine and stir evenly, filter under reduced pressure, remove Insoluble catalyst, the filtrate decompression distillation removes the solvent to obtain the anti-ultraviolet treatment agent crude product; the crude product is added in 65 parts of methylene chloride and 65 parts of toluene, reflux extraction in a Soxhlet extractor for 30 hours, and then filtered under reduced pressure, The undissolved original dye is removed, and finally the filtrate is distilled under red...

Embodiment 3

[0048] Mix 0.6 parts of octanyl silsesquioxane and 3.2 parts of disperse yellow 42 dyes that are ground into powders with a particle size of 0.5 to 1 μm, and mix them evenly. Under nitrogen atmosphere, together with 0.22 parts of anhydrous ferric chloride and 0.23 parts of Add 300 parts of carbon disulfide and 200 parts of benzene together with magnesium chloride and stir until fully dissolved, then raise the temperature to the boiling point of the mixed solvent, keep warm and reflux for 18 hours; after stopping heating, cool the mixed solution to 4°C with ice water, and then add 1.5 parts of diethyl Amine and 1.5 parts of dichloromethane mixture were stirred evenly, filtered under reduced pressure to remove insoluble catalyst, and the filtrate was distilled under reduced pressure to remove the solvent to obtain the crude product of anti-ultraviolet treatment agent; the crude product was added to 450 parts of dichloromethane and 340 parts of trichloro In methane, reflux extract...

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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 in particular relates to a treatment method for ultraviolet-resistant aromatic high-performance fibers. Background technique [0002] Aromatic high-performance fibers such as fully aromatic polyamide (aramid) and poly-p-phenylene 1,3,4-oxadiazole (p-POD) have excellent physical and mechanical properties, thermal stability, electrical insulation, Solvent resistance, special conductivity and electroluminescence properties, often used as high temperature resistant filter cloth, permeable membrane and insulation protection materials (Zhang Z, Ye G, Li W, Li T, XuJ. Influence of sulfuric acid bath on morphological structure and mechanical properties of poly(p-phenylene-1,3,4-oxadiazole) fibers[J].Journal of Applied Polymer Science,2009,114(3):1485-1493; Schulz B,Bruma M,Brehmer L. AromaticPoly(1,3,4-Oxadiazoe)s as Advanced materials[J].Advanced Mater...

Claims

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Application Information

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Patent Type & Authority Applications(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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