Composite hydrogel, impermeable coiled material as well as preparation method and application of composite hydrogel, impermeable coiled material
A composite hydrogel, hydrogel technology, applied in protection devices, gaskets, buildings, etc., can solve problems such as erosion
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Embodiment 1
[0086] The carbon fiber with a mass fraction of 1% and the polyacrylamide with a mass fraction of 20% are fully stirred in a dry-mixing mixer to form a uniform dry-mixed polyacrylamide / carbon fiber for use. Fully mix 30% diatomaceous earth, 2% fumed silica, and 6% sodium carbonate in the reaction kettle, add 35% water, and stir and react at 60°C for 5- 6h, then add coupling agent KH-560 with a mass fraction of 1% and a mildew inhibitor sodium benzoate with a mass fraction of 0.5% in turn, stir in the reaction kettle for 1-2 hours, and mix into a uniform slurry. Add dry-mixed polyacrylamide / carbon fiber to the above uniform slurry, add 4.5% water, and then vigorously stir and shear to form a uniform hydrogel mud with a certain toughness and moderate hardness; mix the above hydrogel with moderate hardness The mud is fed into the hopper of the press, the gap between the two rollers of the press is adjusted to make the molding thickness 5mm, and the hydrogel mud is tightly pressed...
Embodiment 2
[0091] The mass fraction of 0.5% ceramic fiber and 22% mass fraction of N-methylol polyacrylamide modified condensed polyacrylamide are fully stirred in a dry mixing mixer to form a uniform dry mixing modified polyacrylamide / Ceramic fiber, spare. In the reaction kettle, 35% of bentonite and 5% of chitosan were fully mixed, 33% of water was added, and the reaction was stirred at 50 ° C for about 8 hours. The coupling agent DL602 and the antifungal agent sodium pentachlorophenate in mass fraction of 0.5% are stirred in the reaction kettle for 1-2 hours and mixed into a uniform slurry. Add dry-mixed modified polyacrylamide / ceramic fiber to the above uniform slurry, add 3.5% water, and then vigorously stir and shear to form a uniform hydrogel mud with a certain toughness and moderate hardness; The hydrogel mud is fed into the hopper of the press, and the gap between the two pressing rollers of the press is adjusted to make the molding thickness 8mm, and the hydrogel mud is tight...
Embodiment 3
[0096] Mix 1% glass fiber with mass fraction of 15% hydroxymethyl cellulose and 2% polypropylene alcohol in a dry-mixing mixer to form a uniform dry-mixed hydrogel / glass fiber, spare. In the reaction kettle, mix 45% diatomite and 2% chitosan thoroughly, add 30% water, stir and react at room temperature for 3 hours, and then add 1% coupling agent KH-550 and 0.5% antifungal agent benzoic acid in mass fraction, stir in the reaction kettle for 1-2 hours, and mix into a uniform slurry. Add uniform dry-mixed hydrogel / glass fiber to the above uniform slurry, add 3.5% water, and then vigorously stir and shear to form uniform hydrogel mud with moderate hardness with certain toughness; The hydrogel mud is fed into the hopper of the press, and the gap between the two pressing rollers of the press is adjusted to make the molding thickness 6mm, and the hydrogel mud is tightly pressed by the press to a carbon fiber braid with a thickness of 0.3mm at a uniform speed of 5m / min. Between the ...
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