Experimental Study on Surface Modification of Wollastonite

Abstract
Brief background introduction
Research purpose and significance
Main experimental methods
Key results
Conclusions and application prospects
Keywords
Wollastonite; Surface modification; Coupling agent; Dispersibility; Interface compatibility

Chapter 1: Introduction

1.1 Research Background and Significance
Mineral properties and industrial applications of wollastonite
Importance of surface modification in inorganic fillers
Advantages of modified wollastonite in composites
1.2 Research Status at Home and Abroad
Review of wollastonite surface modification technology
Research progress of common modifiers (silane, titanate, etc.)
Existing problems and challenges
1.3 Research Objectives and Content
Clear research goals
Key scientific issues to be solved
Research framework and technical roadmap

Chapter 2: Materials and Methods

2.1 Experimental Materials
Wollastonite powder (source, particle size, purity)
Surface modifiers (e.g., KH-550 silane coupling agent, titanate)
Solvents and auxiliary reagents
2.2 Main Instruments
Powder surface modifier
Scanning Electron Microscope (SEM)
Fourier Transform Infrared Spectrometer (FTIR)
Thermogravimetric Analyzer (TGA)
Contact Angle Meter
Laser Particle Size Analyzer
2.3 Surface Modification Process
Comparison of dry vs. wet modification methods
Parameter settings (modifier concentration, temperature, time)
Detailed modification procedures
2.4 Characterization Methods
Hydrophobicity test (contact angle measurement)
Dispersion stability (sedimentation test, Zeta potential)
Chemical bonding analysis (FTIR)
Thermal stability (TGA)
Morphology observation (SEM)

Chapter 3: Results and Discussion

3.1 Effect of Different Modifiers on Wollastonite
Comparison of modifiers (KH-550, titanate, etc.)
FTIR spectrum analysis: characteristic peak changes
TGA curve analysis: estimation of organic grafting amount
3.2 Optimization of Modification Parameters
Effect of modifier dosage on contact angle
Influence of temperature and time
Orthogonal experimental design and range analysis (optional)
3.3 Performance Comparison Before and After Modification
Particle size distribution change (laser particle size analysis)
Dispersibility improvement (water sedimentation test)
Surface morphology change (SEM image analysis)
3.4 Discussion on Modification Mechanism
Physical adsorption vs. chemical bonding
Interaction mechanism of modifier molecules on wollastonite surface

Chapter 4: Application Performance of Modified Wollastonite

(Optional)4.1 Application in Polymer Matrix Composites
Preparation of PP/wollastonite or PE/wollastonite composites
Mechanical property tests (tensile strength, impact strength)
Fracture morphology analysis (SEM)
4.2 Dispersion Performance in Coatings
Stability of modified wollastonite in water/oil-based systems
Coating performance evaluation

Chapter 5: Conclusions and Outlook

5.1 Main Conclusions
Summary of optimal modification conditions
Key performance indicators with significant improvement
Summary of modification mechanism
5.2 Innovations
Process optimization innovations
New ideas for application expansion
5.3 Outlook
Feasibility of continuous production
Multifunctional synergistic modification
Development of green environmental modifiers
References
List of academic papers, patents, and books (recommended GB/T 7714 format)
Acknowledgements
Gratitude to supervisors, laboratory support, and funding projects
Appendix (Optional)
Raw data tables
Experimental photos
Instrument parameter settings