Polymethyl methacrylate and graphene oxide composite material and preparation method thereof
A technology of polymethyl methacrylate and composite materials, which is applied in the field of polymethyl methacrylate and graphene oxide composite materials and their preparation, can solve problems such as poor compatibility and increase the difficulty of application in the field of polymers, and achieve cost cheap effect
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Embodiment 1
[0030] A preparation method of polymethyl methacrylate and graphene oxide composite material, comprising the steps of:
[0031] (1) Prepare graphene oxide from flake graphite by hummers method, and dry it into powder for later use;
[0032] (2) Add graphene oxide powder to the reaction solvent, add surfactant, calcium chloride, sodium carbonate and methyl methacrylate, pre-mix to form oily droplets suspended in deionized water;
[0033] (3) The initiator was added dropwise for suspension polymerization, and the yellow polymer particles were filtered to obtain a composite material of polymethyl methacrylate and graphene oxide.
[0034] In the step (1), the particle size of the flake graphite is 2000 mesh.
[0035] In the step (2), the pre-mixing condition is: pre-mixing for 0.5 h under the condition of mechanical stirring at 300 rpm.
[0036] In the step (2), the reaction solvent is a mixed liquid composed of deionized water and an organic solvent at a mass ratio of 16:1.
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Embodiment 2
[0044] The difference between this embodiment and the above-mentioned embodiment 1 is:
[0045] In the step (1), the particle size of the flake graphite is 8000 mesh.
[0046] In the step (2), the pre-mixing condition is: pre-mixing for 0.5 h under the condition of mechanical stirring at 300 rpm.
[0047] In the step (2), the reaction solvent is a mixed liquid composed of deionized water and an organic solvent in a mass ratio of 4:1.
[0048] The organic solvent is isopropanol.
[0049] In the step (2), the surfactant is a mixture of 1% PVA solution and 1% CMC solution at a mass ratio of 1:1.
[0050] In the step (2), the molar ratio of calcium chloride to sodium carbonate is 1:1.
[0051] In the step (2), the initiator is a mixture of AIBN and BPO at a weight ratio of 1:1.
[0052] In the step (3), the suspension polymerization reaction conditions are: mechanical stirring 300r / min, reaction temperature 80°C, and time 2h.
Embodiment 3
[0054] The difference between this embodiment and the above-mentioned embodiment 1 is:
[0055] In the step (1), the particle size of the flake graphite is 4000 mesh.
[0056] In the step (2), the pre-mixing condition is: pre-mixing for 0.6 h under the condition of mechanical stirring at 200 rpm.
[0057] In the step (2), the reaction solvent is a mixed liquid composed of deionized water and an organic solvent in a mass ratio of 8:1.
[0058] The organic solvent is isopropanol.
[0059] In the step (2), the surfactant is a mixture of 0.5% PVA solution and 0.5% OP solution in a mass ratio of 1:0.1.
[0060]In the step (2), the molar ratio of calcium chloride to sodium carbonate is 0.8:1.
[0061] In the step (2), the initiator is AIBN.
[0062] In the step (3), the suspension polymerization reaction conditions are: mechanical stirring 200r / min, reaction temperature 75°C, and time 2.5h.
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