Water uptake expansion composition, water uptake expansion material and water uptake expansion packer
A water-absorbing swelling and water-swelling rubber technology, which is applied in sealing/packing, earthwork drilling, wellbore/well parts, etc., can solve the problems of complex process, low grafting rate, lack of affinity between water-absorbing resin and rubber, etc.
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Embodiment 1
[0060] Embodiment 1: prepare WSR of the present invention
[0061] A. 100 parts of HNBR, 100 parts of CMC, 30 parts of NMA, 55 parts of SDBS, 1 part of S1, 10 parts of DCP, 30 parts of HAF, 5 parts of stearic acid, 0.5 parts of zinc stearate, 0.5 parts of accelerator M, TMTD 2 parts, 1 part of anti-aging agent D, 3 parts of IPPD, 20 parts of white carbon black, 3 parts of N-(4-anilinophenyl) methacrylamide, 3 parts of zinc oxide, 2 parts of magnesium oxide, 7 parts of mica, in dense On the mill or open mill, the temperature is 50-55°C, the operation is 10-15min, the roller distance is 4-6mm, the thickness is changed to 1-2mm, the mixing is even, the sheet is placed on and off the open mill, and cooled naturally.
[0062] B. After parking at room temperature for 17 hours, put it into a mold, vulcanize and shape it with a flat vulcanizer, and keep it at 180°C×5min×10MPa to make a WSR test piece.
[0063] Its main performance indicators are as follows:
[0064] a. Hardness (Sho...
Embodiment 2
[0067] Embodiment 2: prepare WSR of the present invention
[0068] A. 100 parts of NBR, 80 parts of CMC, 20 parts of NMA, 70 parts of SDBS, 20 parts of DCP, 60 parts of HAF, 3 parts of stearic acid, 5 parts of accelerator D, 2 parts of IPPD, 3 parts of white carbon black, N- 3 parts of (4-anilinophenyl) methacrylamide, 6 parts of N-(4-anilinophenyl) maleimide, 4 parts of zinc oxide, 15 parts of pottery clay on the internal mixer or open mixer, The temperature is 45-50°C, the operation is 10-15min, the roller distance is 4-6mm, the thickness is changed to 1-2mm, the mixing is even, the sheet is put on and off in the open mill, and cooled naturally.
[0069] B. After parking at room temperature for 17 hours, put it into a mold, vulcanize and shape it with a flat vulcanizer, and keep it at 170°C×5min×10MPa to make a WSR test piece.
[0070] Its main performance indicators are as follows:
[0071] a. Hardness (Shore A): 88 degrees b. Tensile strength 5.58MPa
[0072] c. Elongat...
Embodiment 3
[0074] Embodiment 3: prepare WSR of the present invention
[0075] A. 100 parts of NR, 25 parts of CMC, 7 parts of AM, 20 parts of SDS, 6 parts of DCP, 40 parts of HAF, 1 part of stearic acid, 3 parts of accelerator CZ, 2 parts of anti-aging agent D, N-(4- 5 parts of anilinophenyl) methacrylamide, 0.5 parts of N, N'-m-phenylene bismaleimide, 5 parts of magnesium oxide, 10 parts of clay, 4 parts of mica, in internal mixer or open mixer , the temperature is 35-40°C, the operation is 10-15min, the roller distance is 4-6mm, and the thickness is changed to 1-2mm, and the mixing is uniform.
[0076] B. After parking at room temperature for 17 hours, put it into the mold, vulcanize it with a flat vulcanizer, keep it at 170°C×10min×10MPa, and make a WSR test piece.
[0077] Its main performance indicators are as follows:
[0078] a. Hardness (Shore A): 60 degrees b. Tensile strength: 5.71MPa
[0079] c. Elongation at break: 200% d. Permanent deformation at break: 0%
[0080] e. We...
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