Multi-component triblock fluorosilicone copolymer electronic protective agent with sequence structure and preparation method thereof
A technology of fluorine-silicon copolymer and three-block, which is applied in the field of multi-component tri-block fluorine-silicon copolymer electronic protective agent and its preparation, and can solve the problems of high fluorine monomer content, difficult coating, and low coating efficiency , to achieve the effect of improving the overall performance, improving the hydrophobic and oleophobic properties of the surface, and being environmentally friendly
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Embodiment 1
[0024] 0.3 g of RAFT reagent 2-[(dodecylsulfanyl)thioacyl]-sulfanyl propionic acid, 0.5 g of 3-trimethoxysilane propyl acrylate, and 10 g of butyl acrylate were mixed with 21 g of perfluorohexanone Mix evenly, raise the temperature to 60°C, add 0.08 g of initiator AIBN, and keep the reaction in a nitrogen atmosphere for 5 hours to obtain a prepolymer with active groups at both ends. At this temperature, a mixed solution composed of 6 g of perfluorobutyl ethyl acrylate and 18 g of perfluorohexanone was added dropwise to carry out a block copolymerization reaction. The dropping time was 4 hours. After cooling to room temperature, a fluorosilicone triblock copolymer solution can be obtained.
Embodiment 2
[0026] 0.35 g of RAFT reagent 2-[(dodecylsulfanyl)thioacyl]-sulfanylpropionic acid, 1.0 g of 3-(methacryloyloxy)propyl]trimethoxysilane, methacrylic acid Mix 8 g of isooctyl ester with 20 g of hydrofluoroether evenly, raise the temperature to 58°C, add 0.10 g of initiator azobisisoheptanonitrile, and keep it in a nitrogen atmosphere for 6 hours to obtain a prepolymerized compound with active groups at both ends. things. At this temperature, a mixed solution consisting of 8 g of trifluorooctyl methacrylate and 20 g of hydrofluoroether was added dropwise to carry out a block copolymerization reaction. The dropwise addition time was 3 hours. After cooling to room temperature, a fluorosilicone triblock copolymer solution can be obtained.
Embodiment 3
[0028]0.4 g of RAFT reagent 2-[(dodecylsulfanyl)thioacyl]-sulfanyl propionic acid, 1 g of 3-acryloyloxypropyltriethoxysilane, and 8 g of hexyl acrylate were mixed with 25 g of six Fluorotoluene was mixed evenly, the temperature was raised to 68°C, 0.08 g of dimethyl azobisisobutyrate was added as an initiator, and the reaction was maintained for 4 hours in a nitrogen atmosphere to obtain a prepolymer with active groups at both ends. At this temperature, a mixed solution composed of 5 g of perfluorohexylethyl acrylate and 16 g of hexafluorotoluene was added dropwise to carry out block copolymerization reaction. The time for the addition was 4 hours. Fluorosilicone triblock copolymer solution can be obtained at room temperature.
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