A kind of preparation method of conductive fiber
A technology of conductive fiber and composite fiber, applied in fiber treatment, textile and papermaking, physical treatment, etc., to achieve excellent performance
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Embodiment 1
[0027] First, graphene oxide powder and reduced graphene oxide powder are prepared. 30 grams of graphite mixed with 15 grams of sodium nitrate and 750 milliliters of concentrated sulfuric acid. The mixture was cooled to 0°C in an ice bath, and after stirring for 2 h, 90 g of potassium permanganate was slowly added, keeping the temperature of the mixture below 5°C during the mixing process. The mixture was stirred for another hour and allowed to warm to room temperature by removing the ice bath. Add 1 liter of distilled water to the mixture and increase the temperature in the oil bath to 90°C. Another 300 ml of water were added and stirred for another hour and a half. The color of the mixture turned brown. The mixture was then treated and diluted with 30% hydrogen peroxide in 300 ml and 30 liters of hot water. The mixture was further washed with excess water until the pH of the filtrate was almost neutral to obtain graphene oxide. Then graphene oxide was dispersed in water...
Embodiment 2
[0031] Start by getting 20D / 4f spandex tow. Secondly, obtain a high temperature resistant emulsion sizing agent with a solid content of 2wt% polyimide resin GCPI and epoxy resin 618 in a mass ratio of 65:35. Then the spandex fiber tow is sized to form a composite fiber tow to improve its temperature resistance. Subsequently, the composite fiber tow was passed through a 30 cm long 10 mg / ml graphene oxide aqueous solution at a speed of 0.1 m / s, and after drying, a composite fiber tow coated with a graphene oxide layer was obtained. The composite fiber tow was treated in hydrazine hydrate vapor at 95 degrees Celsius for 24 hours to reduce the graphene oxide layer to obtain a spandex composite fiber tow coated with a reduced graphene oxide layer. Then, under the protection of nitrogen at room temperature, the heating zone with a diameter of 10 cm in a microwave oven with a power of 550W is heated for about 0.5 seconds at a speed of 0.2 m / s, and then enters the room temperature zo...
Embodiment 3
[0033] First obtain 2000dtex / 1000F high-strength PVA fiber. Then prepare a high-temperature-resistant epoxy sizing agent emulsion containing 1 wt % of EP0402 polyhedral oligomeric oligomeric silsesquioxane (POSS) from American Hybrid Plastics and 1 wt % of Dow Chemical Company's DER331 epoxy resin. Then, the high-strength PVA fiber is subjected to high-temperature-resistant epoxy sizing treatment to form a high-strength PVA composite fiber whose surface is coated with a high-temperature-resistant epoxy coating. Then the composite fiber was passed through a 30 cm long 2 mg / ml reduced graphene oxide aqueous solution at a speed of 0.01 m / s, and dried to obtain a high-strength PVA composite fiber tow coated with a reduced graphene oxide layer. Under the protection of helium, the composite fiber tow passes through the pre-temperature control area of minus 10 degrees Celsius at a speed of 0.1 m / s so that the fiber is at minus 10 degrees Celsius, and then passes through a microwave...
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