A kind of composite material preparation method and composite material
A composite material and polymer technology, applied in the direction of conjugated synthetic polymer rayon, rayon manufacturing, textiles and papermaking, etc., can solve the problems of unsuitable industrial production technology, poor mechanical properties of composite materials, and mechanical properties of materials To improve the overall uniformity and pressure resistance performance, improve the uniformity and flexibility, and improve the compatibility
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[0036] see figure 1 , the application provides a method for preparing a composite material, the method comprising the steps of:
[0037] a. Polymer matrix blending modification: Add 1 to 10 parts of polyvinylidene fluoride-based copolymer into the flask, add 100 parts of good solvent and stir to dissolve it, then add 0.1 to 2 parts of functional monomer polymer, and stir to obtain a uniform The polymer mixed matrix solution;
[0038] b. Surface functional modification of inorganic particles: prepare a mixed turbid solution consisting of 100 parts of solvent, 0.1-10 parts of surface modifier and 0.5-10 parts of finely processed inorganic particles, and the pH value is 2-6 at room temperature Under the condition of stirring and reacting for 1 to 48 hours, the modified particles are obtained after washing, purification and drying;
[0039] c. Electrospinning prefabricated film: Add 0.1-10% modified particles with a mass ratio of polymer mixed matrix to the polymer mixed matrix ...
Embodiment 1
[0060] (a) Add 10 mL of dimethylformamide to a 20 mL glass bottle, then add 1 g of poly(vinylidene fluoride-trifluoroethylene) and 0.1 g of styrene-methyl methacrylate resin (MS), at 45 ° C Stir vigorously for 6 hours to obtain a uniform mixed matrix solution;
[0061] (b) Add 0.1g ball-milled barium titanate (BT), 0.3g dopamine, 0.1g catalyst and 150mL water into a 200mL beaker, stir at room temperature for 24h, wash and filter to obtain modified BT particles;
[0062] (c) Add 0.1g of modified BT particles and 10mL of acetone to (a) glass bottle in turn, and make electrospinning precursor solution after ultrasonication at room temperature for 1h. The prefabricated membrane is spun, dried and hot-pressed to obtain a high-energy-storage and low-loss uniform composite material.
[0063] (d) placing the composite material film base material in a stretching device, and performing biaxial stretching at a certain temperature and a certain stretching ratio to obtain a composite mate...
Embodiment 2
[0065] (a) Add 10 mL of dimethylformamide to a 20 mL glass bottle, then add 1 g of poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethylene) and 0.1 g of polymethyl methacrylate (PMMA) to remove impurities , Stir vigorously at 45°C for 6 hours to obtain a uniform mixed matrix solution;
[0066] (b) Then prepare a mixture solution consisting of 20mL water, 0.1g barium strontium titanate (BST) nanowire, 0.3g silane coupling agent, 3ml glacial acetic acid and 5mL hydrogen peroxide, and react for 48h to obtain the modified amino functional group. Sexual BST particles;
[0067] (c) Add 0.1 g of modified BST particles and 10 mL of acetone to (a) glass bottle in turn, and make electrospinning precursor solution after ultrasonication at room temperature for 1 h, and electrospin the precursor solution at 15 kV for 8 h at room temperature to obtain The prefabricated membrane is spun, dried and hot-pressed to obtain a uniform composite material with high energy storage and low...
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