A kind of tackifier copolymerized association and preparation method thereof
The technology of an associate and a tackifier is applied in the field of polymer for drilling fluid and its preparation, which can solve the problem of no obvious improvement in salt resistance and calcium resistance, and achieve the effect of high temperature and salt resistance.
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Embodiment 1
[0069] Weigh 418g NaCl and dissolve it in 1570g deionized water; then weigh 24g MAPS and 64g AM and dissolve it in NaCl solution; 2 Deoxygenation was performed for 1 hour, while the temperature was raised to 55° C., kept for 30 minutes, then 0.44 g of ammonium persulfate was added, and an intermediate product was obtained after 2 hours of reaction. Then, 20 g of cationic polyamine 1 was dissolved in 100 g of deionized water to prepare a cationic polyamine solution, and then the cationic polyamine solution was added to the intermediate product, mixed evenly, and the temperature was raised to 65°C at the same time, and the reaction was continued for 4 hours. A precipitate was obtained by precipitation with acetone. After drying at 110°C for 24 hours, it was pulverized to obtain MAPS / AM tackifier.
Embodiment 2
[0071] Weigh 104g CaCl 2 Dissolve in 836g deionized water; then weigh 47g MAPS, 57g AM and dissolve in CaCl 2 in the solution; fully dissolved and then transferred to the reactor, and N 2 Deoxygenation was performed for 1 hour, while the temperature was raised to 50° C., kept for 30 minutes, then 0.42 g of sodium persulfate was added, and the reaction was carried out for 1 hour to obtain an intermediate product. Then, 20 g of cationic polyamine 2 was dissolved in 100 g of deionized water to prepare a cationic polyamine solution, and then the cationic polyamine solution was added to the intermediate product, mixed evenly, and the temperature was raised to 70° C., and the reaction was continued for 3 hours. A precipitate was obtained by precipitation with acetone. After drying at 120°C for 24 hours, it was pulverized to obtain MAPS / AM tackifier.
Embodiment 3
[0073] Weigh 36g AlCl 3 Dissolve in 580g deionized water; weigh 70g MAPS and 50g AM in AlCl 3 in the solution; fully dissolved and then transferred to the reactor, and N 2 Oxygen removal for 0.5 h, while raising the temperature to 45°C, keeping for 30 min, adding 0.48 g of potassium persulfate, and reacting for 1.5 h to obtain an intermediate product. Then 20 g of cationic polyamine 3 was dissolved in 100 g of deionized water to prepare a cationic polyamine solution, and then the cationic polyamine solution was added to the intermediate product, mixed evenly, and the temperature was raised to 55° C. at the same time, and the reaction was continued for 4 hours. A precipitate was obtained by precipitation with acetone. After drying at 120°C for 16 hours, it was pulverized to obtain MAPS / AM tackifier.
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