Method for preparing nano titanium dioxide/polyacrylate compound emulsion
A technology of nano-titanium dioxide and polyacrylate, which is applied in the field of composite emulsion, can solve the problems of complicated process and easy agglomeration of nano-titanium dioxide, and achieve the effects of simplifying the process, improving compatibility and avoiding secondary agglomeration
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[0017] Example 1
[0018] At room temperature, 4g of cetyltrimethylammonium bromide (CTAB), 6g of acrylic acid (AA) and 10g of methyl methacrylate (MMA) were mixed uniformly, and then 14g of deionized water was slowly added dropwise until the system became Clarify; add 2g butyl titanate and 1g γ-methacryloyloxypropyltrimethoxysilane (A-174), control the addition rate to be 0.4-0.6g / min, and then stir at room temperature for 24h to obtain Organic nano-titanium dioxide system. Add 30g of deionized water to the organic nano-titanium dioxide system, disperse at a speed of 1500rpm / min for 15min, and continue to ultrasonically disperse it in an ultrasonic cell disruptor for 10min; In the reactor of the mixed solution, the temperature was raised to 75 °C, stirred at a speed of 100 rpm / min for 30 min, and the mixed solution containing 0.1 g of potassium persulfate and 5 g of deionized water was added dropwise within 2 h. After the reaction was incubated for 2 h, the temperature was r...
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[0021] Example 2
[0022] At room temperature, mix 6g of cetyltrimethylammonium bromide (CTAB), 8g of acrylic acid (AA), 10g of methyl methacrylate and 10g of butyl acrylate, and then slowly add 15g of deionized water dropwise to the system become clear; add 2.5g of butyl titanate and 1.5g of vinyltrimethoxysilane (A-171), control the addition rate to be 0.4-0.6g / min, and then stir at room temperature for 12h to obtain organic nano-titanium dioxide system. Add 40g of deionized water to the organic nano-titanium dioxide system, disperse at a speed of 2500rpm / min for 10min, and continue to ultrasonically disperse it in an ultrasonic cell disruptor for 30min; In the liquid reactor, the temperature was raised to 70°C and stirred at a speed of 120rpm / min for 40min. Within 1h, a mixed solution containing 0.5g potassium persulfate and 10g deionized water was added dropwise. After the reaction was incubated for 3h, the temperature was raised to 90°C and continued. The reaction was i...
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[0023] Example 3
[0024] At room temperature, mix 7g of cetyltrimethylammonium bromide (CTAB), 7g of acrylic acid (AA) and 25g of butyl acrylate, and then slowly add 12g of deionized water dropwise until the system becomes clear; add 3g of titanium Butyl acid and 1.5g γ-methacryloyloxypropyltrimethoxysilane (A-174), control the addition rate to be 0.4-0.6g / min, and then stir at room temperature for 6h to obtain organic nano-titanium dioxide system. Add 35g of deionized water to the organic nano-titanium dioxide system, disperse at a speed of 800rpm / min for 60min, and continue to ultrasonically disperse it in an ultrasonic cell disruptor for 10min; In the liquid reactor, the temperature was raised to 65°C and stirred at a speed of 120rpm / min for 40min, the mixed solution containing 1g of ammonium persulfate and 12g of deionized water was added dropwise within 2h, and after the reaction was incubated for 2h, the temperature was raised to 85°C, and the insulation was continued....
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