Nano-zirconia-PMMA (polymethyl methacrylate) composite material and preparation method thereof
A technology of nano-zirconia and composite materials, which is applied in the field of high-temperature-resistant nano-zirconia-PMMA composite materials and its preparation, and can solve the problems of insufficient strength, toughness, high-temperature resistance of composite materials, poor product quality stability, and many steps in the preparation method, etc. problems, to achieve the effect of enhancing comprehensive physical and chemical properties, compact preparation process, and excellent corrosion resistance
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[0040] Example 1:
[0041] The nano zirconia-PMMA composite material provided by the embodiment of the present invention is prepared by in-situ polymerization of MMA and modified nano zirconia; the modified nano zirconia is a coupling agent surface modified nano zirconia, and The raw material components include: 3-15 parts of modified nano-zirconia, 28-54 parts of MMA, and the grafting rate of PMMA on the surface of the modified nano-zirconia is not less than 19%.
[0042] Wherein, the preparation steps of the modified nano-zirconia are as follows:
[0043] 1) Add 5-14 parts of nano-zirconia particles, 180-450 parts of absolute ethanol, and 2-4 parts of silane coupling agent into the reactor, stir evenly, and magnetically stir at 40-60°C for 12 hours.
[0044] 2) After the completion of the reaction, filter, wash with absolute ethanol, and dry to obtain silane coupling agent modified nano-zirconia product powder.
[0045] The nano zirconia-PMMA composite material is used as a raw mater...
Example Embodiment
[0060] Example 2:
[0061] The nano-zirconia-PMMA composite material provided by the present invention and the preparation method thereof are basically the same as that of Example 1, and the difference lies in:
[0062] The raw material components include: 3 parts of modified nano-zirconia and 28 parts of MMA; the grafting rate of PMMA on the surface of the modified nano-zirconia is 20%.
[0063] The nano-zirconia-PMMA composite material and its preparation method include the following steps:
[0064] (1) Surface modification of nano zirconia
[0065] a. Add 5 parts of nano zirconia particles, 180 parts of absolute ethanol, 2 parts of silane coupling agent to the reactor, specifically using KH550, stir evenly, and magnetically stir at 40°C for 12 hours;
[0066] b. After the reaction, filter, wash with absolute ethanol, and dry to obtain silane coupling agent modified nano-zirconia product powder;
[0067] (2) MMA is grafted on the surface of nano-zirconia
[0068] c. Add 3 parts of modifi...
Example Embodiment
[0073] Example 3:
[0074] The nano-zirconia-PMMA composite material provided by the present invention and the preparation method thereof are basically the same as those of Examples 1 and 2, and the difference lies in:
[0075] The raw material components include: 6 parts of modified nano-zirconia and 34 parts of MMA; the grafting rate of PMMA on the surface of the modified nano-zirconia is 27.1%.
[0076] (1) Surface modification of nano zirconia
[0077] a. Add 7 parts of nano zirconia particles, 220 parts of absolute ethanol, 3 parts of silane coupling agent KH560 to the reactor, stir evenly, and magnetically stir at 46°C for 12 hours;
[0078] b. After the reaction, filter, wash with absolute ethanol, and dry to obtain silane coupling agent modified nano-zirconia product powder;
[0079] (2) MMA is grafted on the surface of nano-zirconia
[0080] c. Add 6 parts of modified nano-zirconia, 34 parts of MMA monomer, and 14 parts of acetone into the reactor, stir evenly, and heat up to 68°...
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