High-temperature-resistant hydrolysis-resistant organosilicon wetting agent and preparation method thereof
A hydrolysis-resistant, silicone-resistant technology, applied in chemical instruments and methods, dissolution, transportation and packaging, etc., can solve problems affecting product performance, improve wetting and penetration performance, reduce liquid surface tension, and easily obtain raw materials. Effect
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Embodiment 1
[0014] 10 mol trisiloxane ethoxylate, 5 mol polyether and 2 mol perfluorooctane sulfonamide (C 8 f 17 SO 2 NH 2 ) into the reaction kettle, heat up to 85 °C, stir quickly and add 1% ethanol solution of chloroplatinic acid, keep the reaction temperature at 85 °C for 2 h, after the reaction, distill under reduced pressure to remove by-products, and obtain high temperature resistant, hydrolysis resistant silicone Wetting agent, structural formula is as follows:
[0015]
[0016] The surface tension of the silicone wetting agent prepared in this example is 21.0 mN / m, and the range of acid and alkali resistance is 3-9.5. In a high-temperature system at 80°C, the surface tension can be maintained at 21.5 mN / m for up to 72 hours.
Embodiment 2
[0018] 20 mol trisiloxane ethoxylate, 5 mol polyether, 5 mol sulfluramid (C 10 h 6 f 17 NO 2 S) and 2 mol perfluorooctanesulfonyl fluoride (C 8 f 18 o 2 S) Put it into the reaction kettle, raise the temperature to 100 °C, stir quickly and add 1% ethanol solution of chloroplatinic acid, keep the reaction temperature at 100 °C for 3 h, and remove the by-products by distillation under reduced pressure after the reaction, to obtain high temperature resistant, hydrolysis resistant organic Silicon wetting agent, the structural formula is as follows:
[0019]
[0020] The surface tension of the silicone wetting agent prepared in this example is as low as 20.5 mN / m, and the range of acid and alkali resistance is 2 to 10. In a high temperature system of 110°C, the surface tension can be maintained at 21.0 mN / m for up to 120 h .
Embodiment 3
[0022] 50 mol trisiloxane ethoxylate, 5 mol polyether and 10 mol perfluorooctyltriethoxysilane (C 14 h 19 f 13 o 3 Si) into the reaction kettle, heated up to 130 °C, stirred rapidly and added 1% ethanol solution of chloroplatinic acid, kept the reaction temperature at 135 °C for 4 h, after the reaction was completed, distilled under reduced pressure to remove by-products, and obtained high temperature resistant, hydrolysis resistant organic Silicon wetting agent, the structural formula is as follows:
[0023]
[0024] The low surface tension of the silicone wetting agent prepared in this example is 22.0 mN / m, and the range of acid and alkali resistance is 3 to 12. In a high temperature system of 100 ℃, the surface tension can be maintained at 22.5 mN / m for up to 240 h .
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Abstract
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