1 Introduction 1.1 Research purpose 1.2 Research status of air-leakage blocking materials for mine 1.2.1 Inorganic air-leakage blocking materials 1.2.2 Organic air-leakage blocking material 1.3 Research objectives and content 1.4 Experimental 1.4.1 Basic properties of phenol-urea-formaldehyde foaming resin 1.4.2 Optimization of the surfactant 1.4.3 Toughening of phenol-urea-formaldehyde foam 1.4.4 Enhancement of flame-retardant performance of glass fiber/nano-clay composite foam 1.4.5 Comparison of the properties of composite foam with common organic curing foam and its application 1.5 Technical route References 2 Synthesis and Characterization of Phenol-urea-formaldehyde Foaming Resin Used to Block Air-leakage in Mining 2.1 Experimental 2.1.1 Starting materials 2.1.2 Experimental design， resin synthesis and foams preparation 2.1.3 Test methods 2.2 Results and analysis 2.2.1 Influencing factors of the PUF foaming resin 2.2.2 FT-IR analysis of PUF resin 2.2.3 13C NMR analysis of PUF resin 2.2.4 Synthesis mechanism of PUF resin 2.2.5 Foaming properties of PUF resin 2.3 Conclusions References 3 Effects of Surfactants on the Mechanical Properties， Microstructure，and Flame Resistance of Phenol-urea-formaldehyde Foam 3.1 Experimental 3.1.1 Experimental materials 3.1.2 Preparation of phenol-urea-formaldehyde resin 3.1.3 Preparation of phenol-urea-formaldehyde foam 3.1.4 Determination of foam properties 3.2 Results and analysis 3.2.1 Surface tension of phenol-urea-formaldehyde resins 3.2.2 Foaming dynamics 3.2.3 Foaming temperature 3.2.4 Foaming capacity 3.2.5 Microstructure of the foam 3.2.6 Compressive strength 3.2.7 Flame resistance 3.3 Conclusions References 4 Effect of Polyethylene Glycol on the Mechanical Property， Microstructure， Thermal Stability， and Flame Resistance of Phenol-urea-formaldehyde Foams 4.1 Experimental 4.1.1 Raw materials 4.1.2 Synthesis of phenol-urea-formaldehyde resin 4.1.3 Preparation of phenol-urea-formaldehyde foam 4.1.4 Characterization and property determination of foams 4.2 Results and discussions 4.2.1 FT-IR spectroscopy of resin 4.2.2 Foam density 4.2.3 Pulverization rate 4.2.4 Impact strength 4.2.5 Compression strength 4.2.6 Cell microstructure 4.2.7 Thermogravimetric property 4.2.8 Flame retardant behavior 4.3 Conclusions References 5 Flame Retarflant， Thermal and Mechanical Properties of Glass Fiber/Nano-clay Reinforced Phenol-urea-formaldehyde Foam 5.1 Materials and methods 5.1.1 Materials 5.1.2 Preparation of glass fiber/nano-clay composite foam 5.1.3 Property test 5.2 Results and discussions 5.2.1 Density 5.2.2 Pulverization rate 5.2.3 Impact strength 5.2.4 Compression strength 5.2.5 Cell microstructure 5.2.6 Flame retardant behavior 5.2.7 Thermogravimetric analysis 5.3 Conclusions References 6 Properties and Applications of Novel Composite Foam for Blocking Air-leakage in Coal Mine 6.1 Materials and methods 6.1.1 Materials 6.1.2 Preparation of composite foams 6.1.3 Mechanical tests 6.2 Results and discussions 6.2.1 Foaming time and curing time 6.2.2 Foaming temperature and foaming multiple 6.2.3 Shrinkage and pulverization rate 6.2.4 Compressive strength and impact strength 6.2.5 Microstructures 6.2.6 Thermal stability 6.2.7 Flame resistance and antistatic property 6.2.8 Combustion property 6.3 Practical application of new composite foam in coal mine 6.3.1 Goaf sealing using composite foam 6.3.2 Outline of the mining area 6.3.3 Construction program 6.3.4 Filling high caving area using composite foam 6.4 Conclusions References
鄂公網(wǎng)安備 42010302001612號 