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Method for preparing TiO2-g-PMMA
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A tio2-g-pmma, nanotechnology, applied in the field of polymers
Inactive Publication Date: 2017-05-10
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Embodiment 1
[0025] 1) Weigh 5g nano-TiO 2 , into 150ml of ethanol, then add 2g of coupling agent KH570, after ultrasonic treatment for 1 hour, drop a certain amount of acetic acid solution to adjust the pH to between 3-5. Then transfer the mixed solution into a three-necked flask, stir at a constant temperature of 60°C for 6 hours, separate the solid and liquid after cooling, and then dry it in a vacuum oven at 100°C to obtain the treated nano-TiO 2 .
[0026] 2) Weigh 3g of treated nano-TiO 2 , put it into a three-necked flask, add 0.5mL of octylphenol polyoxyethylene ether (OP-10), 80mL of water and 0.1g of sodium dodecylbenzenesulfonate, and adjust the pH to between 9-11.
[0027] 3) Add 0.1g of potassiumpersulfate (KPS) and 3mL of methyl methacrylate (MMA) into a three-necked flask, raise the temperature to 70°C for 5 hours, then cool to room temperature, and filter and dry the obtained product TiO 2 -g-PMMA(P1).
Embodiment 2
[0041] 1) Weigh 10g nano-TiO 2 , into 200mL of ethanol, then add 4g of coupling agent KH570, after ultrasonic treatment for 2 hours, drop a certain amount of acetic acid solution to adjust the pH to between 3-5. Then transfer the mixed solution into a three-necked flask, stir at a constant temperature of 80°C for 8h, separate the solid and liquid after cooling, and then dry it in a vacuum oven at 120°C to obtain the treated nano-TiO 2 .
[0042] 2) Weigh 5g of treated nano-TiO 2 , put it into a three-necked flask, add 1.5mL of octylphenol polyoxyethylene ether (OP-10), 100mL of water and 0.4g of sodium dodecylbenzenesulfonate, and adjust the pH to between 9-11.
[0043] 3) Add 0.3g potassiumpersulfate (KPS) and 5mL methyl methacrylate (MMA) monomer into a three-necked flask, raise the temperature to 90°C for 7 hours, then cool to room temperature, and filter and dry the obtained product TiO 2 -g-PMMA(P2).
Embodiment 3
[0058] 1) Weigh 7.5g nano-TiO 2 , added to 175mL of ethanol, then added 3g of coupling agent KH570, after ultrasonic treatment for 1.5h, a certain amount of acetic acid solution was added dropwise to adjust the pH to between 3-5. Then transfer the mixed solution into a three-necked flask, stir at a constant temperature of 70°C for 7h, separate the solid and liquid after cooling, and then dry it in a vacuum oven at 110°C to obtain the treated nano-TiO 2 .
[0059] 2) Weigh 4g of treated nano-TiO 2 , put into a three-necked flask, add 1mL of octylphenol polyoxyethylene ether (OP-10), 90mL of water and 0.25g of sodium dodecylbenzenesulfonate, and adjust the pH to between 9-11.
[0060] 3) Add 0.2g potassium persulfate (KPS) and 4mL methyl methacrylate (MMA) monomer into a three-necked flask, raise the temperature to 80°C for 6h, then cool to room temperature, and filter and dry the obtained product TiO 2 -g-PMMA(P3).
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Abstract
The invention relates to a method for preparing TiO2-g-PMMA. The method comprises the following steps: adding nanometer TiO2 into ethanol, adding a coupling agent, performing ultrasonic treatment, and dropwise adding acetic acid solution so as to regulate the pH value; stirring the mixed solution at a constant temperature, cooling and performing solid-liquid separation; drying in a vacuum drying oven so as to obtain the treated nanometer TiO2; weighing the treated nanometer TiO2, adding octane pheno1 polyoxyethylene, water and sodium dodecyl benzenesulfonate, regulating the pH value, adding potassiumpersulfate and methyl methacrylate monomers, heating and reacting; and cooling to room temperature, performing suction filtration, and drying to obtain the product. According to the TiO2-g-PMMA material in the technical scheme, the hardness of polyolefin can be improved, the wear resistance is improved, an effect of reinforcing and toughening the polyolefin can be achieved, and a polyolefincomposite material with excellent toughness and strength is prepared.
Description
technical field [0001] The invention belongs to the technical field of macromolecules, in particular to a TiO 2 - Preparation method of g-PMMA. Background technique [0002] Nano titanium dioxide (TiO 2 ) is a kind of filler with high hardness. Adding it to polyolefin can improve the hardness of the composite material and increase its wear resistance. Nano-TiO 2 Due to the small particle size, large specific surface area, good dispersibility and high surface activity, the particles can produce a strong interfacial interaction with polyolefin modification, so that the physical properties of the polymer such as toughness, rigidity and strength are well improved. . [0003] Polymethyl methacrylate (PMMA) is a commonly used thermoplastic resin with excellent physical properties and high surface hardness. It is widely used because of its low price and easy processing. [0004] Can nano-titanium dioxide and polymethyl methacrylate be used to improve polyolefin, so as to incre...
Claims
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