Nanometer titanium dioxide/acrylate polymer composite emulsion and preparation method thereof
A technology of nano-titanium dioxide and acrylate, which is applied in the field of nano-titanium dioxide/acrylate polymer composite emulsion and its preparation, can solve the problems of low coating rate of composite emulsion nano-titanium dioxide, affecting the performance of latex film, complex nucleation mechanism, etc., to achieve Improved compatibility, guaranteed stability, and excellent dispersibility
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[0035] Example 1
[0036] In parts by mass, its raw materials include the following components:
[0037] Modified nano titanium dioxide 3.2 parts
[0038] Acrylic monomer methyl methacrylate 40 parts
[0039] Co-emulsifier hexadecane 1.8 parts
[0040] Emulsifier sodium lauryl sulfate and Tween 80 1.8 parts
[0041] Initiator potassium persulfate 0.4 parts
[0042] 80 parts deionized water
[0043] Prepare nano titanium dioxide / acrylate polymer composite emulsion as follows:
[0044] (1) Preparation of modified nano titanium dioxide
[0045] In terms of parts by mass, mix 3.2 parts of nano-titanium dioxide with 150 parts of isopropanol and disperse by 400W ultrasonic for 20 minutes, add 1.2 parts of vinyltrimethoxysilane, react at 70°C for 3.5h, centrifuge, wash with absolute ethanol, and centrifuge , Repeat the washing 3 times, and bake at 50°C for 24 hours to obtain the modified nano titanium dioxide.
[0046] (2) Preparation of nano titanium dioxide / acrylate polymer composite emulsion
[0...
Example Embodiment
[0048] Example 2
[0049] In parts by mass, its raw materials include the following components:
[0050] Modified nano titanium dioxide 5
[0051] Acrylic monomers acrylamide and butyl acrylate 50 parts
[0052] Co-emulsifier cetyl alcohol 2 parts
[0053] Emulsifier sodium oleate and Tween 80 2 parts
[0054] Initiator ammonium persulfate 0.5
[0055] Deionized water 80
[0056] Prepare nano titanium dioxide / acrylate polymer composite emulsion as follows:
[0057] (1) Preparation of modified nano titanium dioxide
[0058] In terms of parts by mass, mix 5 parts of nano-titanium dioxide with 200 parts of ethanol, then disperse by 800W ultrasonic for 35 minutes, add 5 parts of vinyl triethoxysilane, react at 80°C for 6 hours, centrifuge, wash with absolute ethanol, centrifuge and wash Repeat 3 times and bake at 100°C for 12 hours to obtain modified nano titanium dioxide.
[0059] (2) Preparation of nano titanium dioxide / acrylate polymer composite emulsion
[0060] According to mass parts, dispe...
Example Embodiment
[0061] Example 3
[0062] In parts by mass, its raw materials include the following components:
[0063] Modified nano titanium dioxide 2.25
[0064] Acrylic monomer acrylate, tert-butyl methacrylate and acrylic acid 35 parts
[0065] Co-emulsifier n-pentanol 1.25 parts
[0066] Emulsifier sodium oleate 1.25 parts
[0067] Initiator hydrogen peroxide 0.3 parts
[0068] Deionized water 70
[0069] Prepare nano titanium dioxide / acrylate polymer composite emulsion as follows:
[0070] (1) Preparation of modified nano titanium dioxide
[0071] In terms of parts by mass, mix 2.25 parts of nano-titanium dioxide with 110 parts of methanol and disperse by 600W ultrasonic for 10 minutes, add 2.25 parts of γ-methacryloxypropyltrimethoxysilane, react at 60°C for 3.5h, centrifuge, Washing with absolute ethanol, centrifugation and washing are repeated 3 times, and baking at 75° C. for 18 hours to obtain modified nano titanium dioxide.
[0072] (2) Preparation of nano titanium dioxide / acrylate polymer com...
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