Colloidal nanoparticle self-assembled modified carbon fiber, preparation method and carbon fiber composite material
A nanoparticle and carbon fiber technology, applied in carbon fiber, fiber processing, textiles and papermaking, etc., can solve the problems of high equipment requirements and high energy consumption, and achieve the effect of low equipment requirements, low energy consumption, and suitable for large-scale industrial production.
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[0031] First, the present invention provides a method of preparing colloidal nanoparticles self-assembled carbon fiber modification, the method comprising:
[0032] Step a: the carbon fiber was immersed in an aqueous solution of polyelectrolyte for processing, said processing temperature is preferably 25-90 deg.] C, the processing time is preferably 0.1-24h, by washing, and dried to obtain a carbon fiber having an electric charge after modification; the poly electrolyte concentration is preferably 0.1-10wt%;
[0033] According to the present invention, the polyelectrolyte also known as polymer electrolyte, is a class of natural and synthetic water-soluble polymer is a linear or branched, containing the structural units of the ionizable group, has good ionic conductivity, preferably polyacrylic acid, polymethacrylic acid, polystyrene sulfonic acid, polyvinyl sulfonic acid, polyvinyl phosphoric acid, polyethyleneimine, polyvinyl pyridine or an amine, and more preferably a polyacryli...
Embodiment 1
[0053] (1) 500 ml of polyacrylic acid 50% aqueous solution was added to 500 ml of deionized water, stirred at 50 ° C for 30 min, and the carbon fibers were immersed in the above solution, reacted for 30 min, washed with deionized, dried to obtain a polyelectrolyte modified carbon fiber.
[0054] (2) Take 14G SNCL 4 · 5h 2 O is placed in 100 ml of deionized water, stirred at room temperature for 12 h, SN (OH) 4 The colloid was placed in a colloid, and 30 min was assembled to give colloidal nanoparticles from self-contained modified carbon fibers.
[0055] (3) According to the test standard, prepare 8-layer colloidal nanoparticle self-contained modified carbon fiber is placed in the mold, and the epoxy resin and curing agent H256 after the bubbles will be excluded (mass ratio of 100: 35) into the mold under vacuum. At 120 ° C for 2 h, cured at 150 ° C for 2 h, and the obtained carbon fiber composite is cropped for related tests.
[0056] image 3 For the first embodiment of the pres...
Embodiment 2
[0059] (1) 3 ml of 50% aqueous solution was added to 500 mL of deionized water, stirred at 50 ° C for 30 min, and the carbon fibers were immersed in the above solution, reacted for 30 min, washed with deionized, dried to obtain a polyelectrolyte modified carbon fiber.
[0060] (2) Take 14G SNCL 4 · 5h 2 O is placed in 100 ml of deionized water, stirred at room temperature for 12 h, SN (OH) 4 The colloid was placed in a colloid, and the colloidal nanoparticle self-contained modified carbon fibers were obtained from the colloidal nanoparticles.
[0061] (3) According to the test standard, prepare 8-layer colloidal nanoparticle self-contained modified carbon fiber is placed in the mold, and the epoxy resin and curing agent H256 after the bubbles will be excluded (mass ratio of 100: 35) into the mold under vacuum. At 120 ° C for 2 h, cured at 150 ° C for 2 h, and the obtained carbon fiber composite is cropped for related tests.
[0062] Figure 4 For the second embodiment of the prese...
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