Preparation method for covalent crosslinking cladded type polyacrylate-based graphene nano composite finishing agent
A technology of polyacrylate and covalent cross-linking, which is applied in the direction of coating, etc., can solve the problems of low performance of composite materials, high viscosity of composite system, high processing energy consumption, etc., and achieve obvious competitive advantages, good dispersion, coating resistance good abrasive effect
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[0025] The preparation method of covalently cross-linked coated polyacrylate-based graphene nanocomposite coating agent is characterized in that it comprises the following steps:
[0026] Step 1: Preparation of carbonylated polyacrylate
[0027] According to the number of parts by mass, after dissolving 0.5-1.0 parts of ammonium persulfate in 62-99 parts of deionized water, place it in a reactor at 75 ° C, and then drop emulsion A and trigger Agent aqueous solution A, add dropwise for 1.0-1.5 h, after dropping, keep warm at 75 ℃ for 0.5-1.0 h; then add emulsion B and initiator aqueous solution B dropwise to it through the dropping device, add dropwise for 2.0-3.0 h, drop After completion, keep the reaction at 75°C for 2.0-3.0 h, cool down to room temperature after the reaction, adjust the pH value to 7.0-8.0, and filter the material to obtain carbonylated polyacrylate;
[0028] Step 2: Preparation of Aminated Graphene Oxide
[0029] According to the number of parts by mass, ...
Embodiment 1
[0037] Step 1: Preparation of carbonylated polyacrylate
[0038] According to the number of parts by mass, after dissolving 0.5 parts of ammonium persulfate in 62 parts of deionized water, place it in a reactor at 75°C, and then drop emulsion A and initiator aqueous solution A to it simultaneously through a dropping device, Add dropwise for 1.0 h, and then keep warm at 75°C for 0.5 h after dropping; add emulsion B and initiator aqueous solution B dropwise to it through the dropping device, add dropwise for 2.0 h, and keep warm at 75°C for 2.0 h after dropping. After the reaction was completed, the temperature was lowered to room temperature, the pH value was adjusted to 7.0, and the material was filtered to obtain carbonylated polyacrylate. Wherein, emulsion A is made of 0.1 part of sodium lauryl sulfate, 0.05 part of branched chain secondary alcohol polyoxyethylene ether, 20 parts of deionized water, 0.60 part of diacetone acrylamide, 15 parts of methacrylic acid Methyl este...
Embodiment 2
[0045] Step 1: Preparation of carbonylated polyacrylate
[0046] In parts by mass, after dissolving 0.7 parts of ammonium persulfate in 70 parts of deionized water, place it in a reactor at 75°C, and then drop emulsion A and initiator aqueous solution A therein through a dropping device, Add dropwise for 1.0 h, and then keep warm at 75°C for 1.0 h after dropping; add emulsion B and initiator aqueous solution B dropwise to it through the dropping device, add dropwise for 2.0 h, and keep warm at 75°C for 3.0 h after dropping. Cool down to room temperature after the reaction, adjust the pH value to 8.0, and filter the material to obtain carbonylated polyacrylate. Wherein, emulsion A is made of 0.15 parts of sodium lauryl sulfate, 0.06 parts of branched chain secondary alcohol polyoxyethylene ether, 25 parts of deionized water, 0.70 parts of diacetone acrylamide, 17 parts of methacrylic acid Methyl acrylate and 23 parts of butyl acrylate were obtained through high-speed shearing ...
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