A kind of high tenacity organic-inorganic composite macroscopic fiber and its preparation and application
A macroscopic fiber and inorganic composite technology, applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve problems such as weak interaction force, difficult to popularize and apply, difficult to balance strength and toughness, etc., to achieve compact structure, The effect of excellent toughness and high mechanical load capacity
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Embodiment 1
[0031] The preparation method of the organic-inorganic composite macroscopic fiber provided by the invention is as follows: figure 1 As shown, the specific process is as follows:
[0032] Preparation of calcium phosphate nanoclusters: prepare ethanol solution of calcium chloride, dissolve 11.76g calcium chloride dihydrate in 1.60L absolute ethanol, add 221.79mL triethylamine, stir for 30min, then add dropwise ethanol solution of phosphoric acid (4.18 mL phosphoric acid dissolved in 80mL ethanol), stirred vigorously for 12h, obtained white precipitate by centrifugation, washed with ethanol repeatedly, centrifuged, and then dispersed in ethanol to prepare a concentration of about 10mg mL -1 calcium phosphate nanoclusters.
[0033] Composite thin films were prepared by emulsion evaporation-induced self-assembly, which is a simple bottom-up approach. First, take 6 parts of 20mL with a concentration of about 10mg mL -1 Place the calcium phosphate nanoclusters in a 50mL centrifug...
Embodiment 2
[0036] Take 6 parts of 10mL, the concentration is about 10mg mL -1Place the calcium phosphate nanoclusters in a 50mL centrifuge tube, centrifuge at 8000rpm for 5min, pour off the supernatant, add 10mL of 0.5wt% sodium alginate aqueous solution and shake evenly, then add 10mL of 3.0wt% polyvinyl alcohol aqueous solution , oscillate evenly, transfer to a 250mL beaker, stir vigorously for 3h, and finally transfer the uniform emulsion to a 12cm×12cm petri dish after ultrasonic degassing, dry at room temperature, and finally peel off from the petri dish to obtain a dry composite film, then Soak the film in water for 5-10 minutes, take it out, stretch it directionally and repeatedly to a strain of 200%, and then wet twist it into a macroscopic fiber. In order to maintain the excellent toughness of the fibers, the prepared fibers were placed in a mixed solution of glycerol and water (the volume ratio of glycerol to water was 8:2) for 5 min of water retention treatment. Take it out a...
Embodiment 3
[0039] Take 6 parts of 5mL with a concentration of about 10mg mL -1 Place the calcium phosphate nanoclusters in a 50mL centrifuge tube, centrifuge at 8000rpm for 5min, pour off the supernatant, add 10mL of 0.5wt% sodium alginate aqueous solution and shake evenly, then add 10mL of 3.0wt% polyvinyl alcohol aqueous solution , oscillate evenly, transfer to a 250mL beaker, stir vigorously for 3h, and finally transfer the uniform emulsion to a 12cm×12cm petri dish after ultrasonic degassing, dry at room temperature, and finally peel off from the petri dish to obtain a dry composite film, then Soak the film in water for 5-10 minutes, take it out, stretch it directionally and repeatedly to a strain of 200%, and then wet twist it into a macroscopic fiber. In order to maintain the excellent toughness of the fibers, the prepared fibers were placed in a mixed solution of glycerol and water (the volume ratio of glycerol to water was 8:2) for 5 min of water retention treatment. Take it out...
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