High-strength physical crosslinking hydrogel and elastomer composition and preparation method thereof
A technology of physical cross-linking and physical cross-linking agent, applied in the field of high-strength physical cross-linked hydrogels and elastomers and their preparation, can solve the limitation of polymer types, difficult cross-linking, poor mechanical strength of hydrogels, etc. problems, to avoid residues and complicated operating procedures, reduce the difficulty of cross-linking, and achieve the effect of a wide range of choices
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Embodiment 1
[0052] Preparation of solution A: Mix 7 g of polyethylene oxide, 62 g of water and 31 g of ethylene glycol, and fully stir for 120 minutes under heating at 100° C. to obtain uniform and clear solution A.
[0053] The solution A was transferred into a plate-shaped glass mold, sealed and placed in a room temperature environment of 20°C. After 12 hours, it was taken out to obtain a hydrogel with a thickness of 2 mm.
Embodiment 2
[0055] Preparation of solution A: 4g of polyvinylpyrrolidone, 48g of water and 48g of sorbitol were mixed, fully stirred at 100°C for 120 minutes to obtain uniform and clear solution A.
[0056] Transfer the solution A into a plate-shaped glass mold, and immediately put it into a constant temperature refrigerator at a temperature of -25°C for low-temperature freezing after sealing. After 12 hours, it was taken out from the refrigerator and thawed at room temperature for 1 hour to obtain a hydrogel with a thickness of 2 mm.
Embodiment 3
[0058] Preparation of solution A: Mix 2 g of polyvinyl alcohol, 73.5 g of water and 24.5 g of glucose, and fully stir for 120 minutes under heating at 100° C. to obtain uniform and clear solution A.
[0059] The solution A was transferred into a plate-shaped glass mold, sealed and placed in a room temperature environment of 20°C. After 12 hours, it was taken out to obtain a hydrogel with a thickness of 2mm.
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