Interpenetrating network resin with high water retention rate and preparation method thereof
By introducing hyperbranched polysiloxane prepolymers into water-absorbing resins and compounding them with traditional crosslinking agents to form an interpenetrating network structure, the problem of easy swelling and cracking of traditional water-absorbing resins under pressure is solved, achieving high water retention and excellent compressive and tensile strength, while also having the advantage of easy large-scale production.
Patent Information
- Application Number
- CN202610140318.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-23
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional superabsorbent polymers are prone to swelling and cracking after being subjected to pressure or prolonged soaking, resulting in a decrease in water retention. Existing improvement methods usually come at the cost of sacrificing water absorption rate or increasing costs.
In a polyacrylic acid-acrylamide and polyvinyl alcohol dual-network system, hyperbranched polysiloxane prepolymers are compounded with traditional crosslinking agents to form a high water retention interpenetrating network water-absorbing resin. The mechanical strength and toughness of the resin are improved through chemical bonding and physical crosslinking.
It achieves a significant improvement in the mechanical strength and structural stability of the resin while maintaining high water absorption, as well as its compressive and tensile properties. Furthermore, the preparation method is simple and easy to scale up for production.