Molybdenum disulfide nanosheet modified urea formaldehyde / melamine resin as well as preparation and application thereof
Through hydrothermal synthesis and surface functional group modification technology, modified urea formaldehyde/melamine resin was prepared, which solved the problem of fast curing speed and low compressive strength of existing resin sand-sand solidifying agents at high temperatures, achieved higher temperature resistance and compressive strength, and significantly improved the sand-solidization effect and permeability retention rate.
Patent Information
- Application Number
- CN202311230204.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-22
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2043-09-22
AI Technical Summary
The existing resin sand solidifiers have problems such as too fast curing speed, low compressive strength, poor tolerance to formation fluids and low permeability retention at high temperatures, which are difficult to meet the needs of medium and high liquid yields in petroleum mining.
Molybdenum disulfide nanosheets were prepared by hydrothermal synthesis, and the surface functional group modification and copolymerization reaction were carried out by copolymerization of aldehydes and polyamine compounds with the modified molybdenum disulfide nanosheets to form a modified urea formaldehyde/melamine resin, which increased its stability and compressive strength at high temperatures.
The temperature resistance and compressive strength of the resin are improved, the dispersion of nanosheets in the resin is improved, the binding ability with sand and gravel is enhanced, and the sand solidification effect and permeability retention rate are significantly improved.