Method for preparing polystyrene/sodium monofluorophosphate microcapsule corrosion inhibitor
A technology of sodium monofluorophosphate and polystyrene, which is applied in the field of concrete steel rust inhibitor, can solve the problems of slow penetration speed, lower concentration, and lower anti-rust effect, and achieve the effect of avoiding impact and improving water resistance
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Embodiment 1
[0037] 1. Raw materials:
[0038] Rust inhibitor: sodium monofluorophosphate (toothpaste grade, Hubei Xingfa Chemical Group Co., Ltd.): 80g;
[0039] Emulsifier: Tween 80 (chemically pure, Guangdong Yueqiao Reagent Plastic Co., Ltd.): 0.2g;
[0040] Protective colloid: polyethylene glycol (chemically pure, Shanghai Yili Biotechnology Co., Ltd.): 2 g,
[0041] Microcapsule shell material: polystyrene resin (5250, Taiwan Taihua): 20g;
[0042] PS solvent: dichloromethane (chemically pure, Guangdong Guanghua Chemical Factory Co., Ltd.), 180 g;
[0043] distilled water.
[0044] 2. Equipment:
[0045] Constant temperature water bath, stirrer, three-neck flask
[0046] Preparation Process:
[0047] 1) Make 80 g of sodium monofluorophosphate into a saturated aqueous solution of sodium monofluorophosphate, then add 0.2 g of Tween 80, stir and dissolve, and make an aqueous phase.
[0048] 2) Dissolving 20g of polystyrene in 180g of methylene chloride to make an oil phase, the t...
Embodiment 2
[0054]1. Raw materials:
[0055] Rust inhibitor: sodium monofluorophosphate (toothpaste grade, Hubei Xingfa Chemical Group Co., Ltd.): 80g;
[0056] Emulsifier: sodium lauryl sulfate: (chemically pure,) 0.1g;
[0057] Protective colloid: polyethylene glycol: (chemically pure, Shanghai Yili Biotechnology Co., Ltd.): 2 g;
[0058] Microcapsule shell material: polystyrene resin (5250, Taiwan Taihua): 30 g;
[0059] PS solvent: chloroform (chemically pure, Guangdong Guanghua Chemical Co., Ltd.), 180 g;
[0060] distilled water.
[0061] 2. Equipment:
[0062] Constant temperature water bath, stirrer, three-neck flask
[0063] Preparation Process:
[0064] 1) Make 80g of sodium monofluorophosphate into a saturated aqueous solution of sodium monofluorophosphate, add 0.5g of Tween 80, stir and dissolve, and make an aqueous phase;
[0065] 2) Dissolving 30g of polystyrene in 180g of chloroform to make an oil phase, the temperature of the water bath is 60°C.
[0066] 3) Mix the...
Embodiment 3
[0071] 1. Raw materials:
[0072] Rust inhibitor: sodium monofluorophosphate (toothpaste grade, Hubei Xingfa Chemical Group Co., Ltd.): 80g;
[0073] Emulsifier: Tween 80 (chemically pure, Guangdong Yueqiao Reagent Plastic Co., Ltd.): 1g;
[0074] Protective colloid: polyvinyl alcohol (chemically pure, Shanghai Yili Biotechnology Co., Ltd.): 6 g,
[0075] Microcapsule shell material: polystyrene resin (5250, Taiwan Taihua): 40g;
[0076] PS solvent: dichloromethane (chemically pure, Guangdong Guanghua Chemical Factory Co., Ltd.), 180 g;
[0077] distilled water.
[0078] 2. Equipment:
[0079] Constant temperature water bath, stirrer, three-neck flask
[0080] Preparation Process:
[0081] 1) Make 80 g of sodium monofluorophosphate into a saturated aqueous solution of sodium monofluorophosphate, add 1 g of Tween 80, stir and dissolve, and make an aqueous phase.
[0082] 2) Dissolving 40g of polystyrene in 180g of dichloromethane to make an oil phase, the temperature of ...
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