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Study on Grouting Performance Optimization of Polymer Composite Materials Applied to Water Plugging and Reinforcement
Xuanning Zhang1, Ende Wang1, Sishun Ma1
1Department of Geology, College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China.
Materials (Basel, Switzerland)
|September 14, 2024
Summary
This study developed an improved polymer composite grouting material using fly ash, enhancing thermal stability and water resistance for safer, more cost-effective mine grouting applications.
Area of Science:
- Materials Science
- Geotechnical Engineering
- Polymer Chemistry
Background:
- Increasing mine drilling depths and complex geological conditions necessitate advanced grouting materials.
- Polymer slurries offer good permeability and water-plugging capabilities for mine safety.
- Further research is crucial to optimize polymer slurry performance and reduce costs.
Purpose of the Study:
- To develop and evaluate a novel polymer composite grouting material.
- To investigate the effects of fly ash, catalyst, and coupling agent on material properties.
- To enhance thermal stability, hydrophobicity, and mechanical performance for mine applications.
Main Methods:
- Preparation of a polymer composite using diphenyl methyl diisocyanate, polyether polyol, and fly ash.
- Inclusion of dibutyltin dilaurate as a catalyst and organosilanes as a coupling agent.
- Comprehensive performance evaluation including mechanical properties, thermal stability, hydrophobicity, and bonding.
Main Results:
- Fly ash incorporation significantly improved thermal stability and water resistance.
- Fly ash addition increased degradation temperature and water contact angle, while reducing density and reaction temperature.
- Catalyst (dibutyltin dilaurate) accelerated gel time; coupling agent (organosilanes) enhanced mechanical properties and bond strength.
Conclusions:
- The developed polymer composite grouting material demonstrates superior thermal stability and water resistance.
- Fly ash and organosilanes are effective additives for enhancing polymer slurry performance in mine grouting.
- This research provides a theoretical basis for advanced polymer composite development in mining.
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