Nano modified resin coated sand and preparation method thereof
A technology of resin coating and nano-modification, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of limited sand body strength, long drying time of coated sand, difficulty in meeting sand control requirements, etc., and achieve high intensity effect
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Embodiment 1
[0067] Example 1: Preparation of nano-modified resin-coated sand and comparison of effects of different preparation methods
[0068] Nano-SiO 2 Modified resin
[0069] 1) Simple blending method:
[0070] ① Weigh 0.6g silane coupling agent KH-550, 15g nano-SiO 2 , mixed and stirred evenly in the acetone solution;
[0071] ② Weigh 50g of resin, add the above mixed solution into the resin, stir well, and set aside for later use.
[0072] 2) Solution blending method:
[0073] ① Weigh 0.6g silane coupling agent KH-550, 15g nano-SiO 2 , mixed and stirred evenly in the acetone solution;
[0074] ②Put the beaker containing the above mixture on an ultrasonic cleaner (processing frequency 20000Hz, intensity 150W), and ultrasonically disperse for 10min;
[0075] ③ Weigh 50g of resin, add the above mixed solution into the resin, stir thoroughly, then disperse with ultrasonic waves for 30min, then heat and react at 60-90°C for 2h, and set aside for later use.
[0076] Making na...
Embodiment 2
[0082] Example 2: Comparison of compressive strength between nano-modified resin-coated sand and ordinary resin-coated sand
[0083] (1) Weigh 15g nano-SiO according to the ratio of 4:100 2 , 0.6g silane coupling agent KH-550, add it into the acetone solution, mix and stir evenly, and then disperse with ultrasonic wave for 10min;
[0084] (2) Weigh 50g of resin, add the above mixed solution into the resin, mechanically stir at low speed, ultrasonically disperse for 30min, and heat at 60-90°C for 2h;
[0085] (3) Weigh 500g of quartz sand, wash it, dry it, place it in a tray, weigh 1g of silane coupling agent KH-550, 2.5g of hexamethylenetetramine, and 5g of dibutyl ester, and couple the silane Add agent KH-550, the above-mentioned treated resin, hexamethylenetetramine, and dibutyl ester into the tray containing the sand sample in sequence, and each step must be fully stirred before proceeding to the follow-up procedure, and placed to dry naturally. crushing and sieving the c...
Embodiment 3
[0090] Example 3: Permeability test of nano-modified resin-coated sand body
[0091] (1) Weigh 15g nano-SiO according to the ratio of 4:100 2 , 0.6g silane coupling agent KH-550, add it into the acetone solution, mix and stir evenly, and then disperse with ultrasonic wave for 10min;
[0092] (2) Weigh 50g of grinding wheel wear-resistant grease SA-2, add the above mixed solution into grinding wheel wear-resistant grease SA-2, mechanically stir at low speed, ultrasonically disperse for 30 minutes, and heat for 2 hours at 60-90°C;
[0093] (3) Weigh 500g of quartz sand, wash it, and dry it. As for the tray, weigh 1g of silane coupling agent KH-550, 2.5g of hexamethylenetetramine, and 5g of dibutyl ester, and put the silane coupling agent Add KH-550, grinding wheel wear-resistant grease SA-2, hexamethylenetetramine, and dibutyl ester into the tray containing the sand sample in sequence. Each step must be fully stirred before proceeding to the subsequent procedures, and placed to...
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