A kind of preparation method of fiber modified water-absorbing swelling hydrolyzed nitrile rubber
A technology of nitrile rubber and water absorption swelling, which is applied in the field of composite materials and can solve the problems of reducing WSR water absorption and mechanical properties
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Embodiment 1～5
[0035] Utilize acrylic fiber to prepare the specific application of water-absorbing swellable nitrile rubber, its step is as follows:
[0036] 1) Dissolve nitrile rubber in acetone, ultrasonically oscillate until the rubber is completely dissolved, then add 3mol / L sodium hydroxide glycerol-water solution, heat up to 50°C, and react for 24 hours, then pour the reaction solution into absolute ethanol , filter out the precipitate, wash with distilled water and dry to obtain hydrolyzed nitrile rubber. Among them, the volume ratio of glycerol to water is 1:9. The infrared spectra of hydrolyzed nitrile rubber and nitrile rubber were measured by Impact420 Fourier transform infrared spectrometer.
[0037] 2) After 100 parts of the hydrolyzed nitrile rubber obtained in step 1) were masticated for 3 to 5 minutes in a double-roller mill, 1.5 parts, 5 parts of ZnO, and 1 part of anti-aging agent N-phenyl-2- Naphthylamine, 1.5 parts of vulcanization accelerator 2, 2'-dithiodibenzothiazol...
Embodiment 6～11
[0052] 1) Put 100 parts of nitrile / hydrolyzed nitrile rubber in a double-roller open mill for 3~ After 5 minutes, add 1.5 parts, 5 parts of ZnO, 1 part of antioxidant N,N'-di(β-naphthyl)-p-phenylenediamine, and 1.5 parts of vulcanization accelerator 2,2'-dithio Dibenzothiazole, 1.5 parts of vulcanization accelerator N-cyclohexyl-2-benzothiazole sulfenamide, 1.5 parts of sublimed sulfur, each additive is added and mixed for 1 to 2 minutes before adding the next one, Then add 10 parts of acrylic fibers and 60 parts of sodium polyacrylate, and knead for 10 minutes. Finally, add 20 parts of natural gas channel black and 20 parts of precipitated silica to the rubber matrix and knead evenly. , the next film, stand for 8 hours for later use.
[0053] 2) Put the mixed nitrile rubber obtained in step 1) on the open mill, and then gradually increase the roll distance of the open mill from 2mm to 4mm, and let the rubber material pass through the roller repeatedly to make the fiber along...
Embodiment 12-16
[0060] 1) After masticating 100 parts of hydrolyzed nitrile rubber in a double-drum mill for 3 to 5 minutes, add 1.5 parts, 5 parts of ZnO, 1 part of anti-aging agent N-phenyl-2-naphthylamine, 1.5 parts Vulcanization accelerator 2-mercaptobenzothiazole, 1.5 parts of vulcanization accelerator N-cyclohexyl-2-benzothiazole sulfenamide, 1.5 parts of sublimed sulfur, each auxiliary agent is added and mixed for 1~ Add the next one after 2 minutes, then add 10 parts of acrylic fiber, 40, 50, 60, 70, 80 parts of sodium polyacrylate, and mix for 10 minutes. Finally, add 20 parts of natural gas tank black and 20 parts of precipitated white carbon black Put it into the rubber matrix and knead evenly, pack it into a triangle bag 6 times, thin it out, slice it, and let it stand for 8 hours for later use.
[0061] 2) Put the mixed nitrile rubber obtained in step 1) on the open mill, and then gradually increase the roll distance of the open mill from 2mm to 4mm, and let the rubber material p...
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