Metal-containing composite materials
A metal composite material, metal technology, used in the production of metal-containing materials or composite materials, metal-containing composite materials, and can solve the problems of mechanical properties, hardness and strength reduction.
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Embodiment 1
[0128]In microemulsion polymerization, 5.8 g deionized water, 5.1 mM acrylic acid (from Sigma Aldrich), 0.125 mole methylmethacrylic acid MMA ( Sigma Aldrich) and 9.5 g of a 15% by weight SDS surfactant in water (from Fischer Chemical) were introduced into a 250 ml four-necked flask equipped with a reflux condenser. The reaction mixture was stirred at 120 rpm for 1 hour while heating in an oil bath at 85°C until a stable emulsion formed. 0.1 g of ethanolated iridium oxide sol (concentration 1 g / L) with an average particle size of 80 nm was added to the emulsion, and the mixture was stirred for an additional 2 hours. Then, an initiator solution containing 200 mg of potassium hydrogen peroxosulfate in 4 ml of water was slowly added over a period of 30 minutes. After 4 hours, the mixture was neutralized to pH 7 and the resulting miniemulsion of encapsulated iridium oxide particles was cooled to room temperature. The average particle size of the iridium oxide particles encapsula...
Embodiment 2
[0131] A miniemulsion was prepared as in Example 1 above. However, the amount of surfactant used was reduced to 0.25 g of 15% SDS in water to enlarge the resulting PMMA vesicles. The resulting PMMA-encapsulated iridium oxide particles had an average particle size of 400 nm. The emulsion was dried in vacuo for 72 hours and a suspension of the resulting encapsulated particles in ethanol was prepared at a concentration of 5 mg / ml.
[0132] According to the method described above in Example 1, a homogeneous sol was produced from 100 ml of a 20% by weight solution of magnesium acetate in ethanol, followed by the addition of 10 ml of 10% nitric acid at room temperature and stirring for 3 hours, followed by the addition of 4 ml of TEOS (obtained from Degussa ), and stirred at room temperature for another 2 hours at 20 rpm. Combine 2ml of the sol and 2ml of the suspension of encapsulated iridium oxide, stir at room temperature at 20rpm for 30 minutes, and then spray on metal substra...
Embodiment 3
[0134] In miniemulsion polymerization, 5.8 g deionized water, 5.1 mM acrylic acid (obtained from Sigma Aldrich ), 0.125mol of methylmethacrylate (metylmethacrylic acid) (also obtained from Sigma Aldrich) and 0.5g of an aqueous solution of 15% by weight SDS surfactant (obtained from Fischer Chemical), and in an oil bath at 85°C at 120rpm Stir for about 1 hour to obtain a stable emulsion. To this emulsion was added 0.1 g of ethanolated magnesium oxide sol (concentration 2 g / L) with an average particle size of 15 nm, and the mixture was further stirred for 2 hours. An initiator solution containing 200 mg of potassium hydrogen peroxosulfate in 4 ml of water was then slowly added over a period of 30 minutes. After 4 hours, the mixture was neutralized to pH 7 and the resulting fine emulsion of PMMA-encapsulated magnesium oxide particles was cooled to room temperature. The resulting emulsion had an average particle size of about 100 nm. The emulsion was dried in vacuo for 72 hours...
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