1、Long
The results show that adding an appropriate amount of silane coupling agent can improve the toughness of geopolymer, and the best performance is obtained when the silane coupling agent content is 0.1 wt%.
2、Investigation of grafting silane coupling agents on
The present study demonstrated the wettability properties of grafting silane coupling agents on carbonyl iron (CI)/SiO2 particles for efficient oil/water mixture and emulsion separation.
3、Study on the Regulation Mechanism of Silane Coupling Agents
Therefore, this study prepares Fe 3 O 4 /CNT silicone oil-based magnetic liquids using an in-situ chemical coprecipitation method. It employs three silane coupling agents with different functional groups and chain lengths for surface modification.
4、XRD patterns of the modified CP upon adding silane coupling agents. (a
Hydrophobic clinoptilolite (CP) was successfully synthesized via a silanization method using methyltriethoxysilane (MTS) or diethoxydimethylsilane (DMTS) as silane coupling agents. The...
Effect of silane coupling agent on compatibility interface and
XRD analysis showed that silane coupling agent modification improved the crystallinity of composites with the improvement of KH-570 the best. And the thermal stability of silane-modified composites was improved and the thermal stability of KH-570-modified composite the best.
Microscopic mechanisms and chloride resistance performance of silane
The analysis revealed the different volumes and surface areas of rust products between the untreated specimen and those treated with silane coupling agent molecular self-assembly technology.
Molecular elucidation of cement hydration inhibition by silane coupling
Here the authors show how silane coupling agents hinder calcium dissolution of tricalcium silicate from ab initio metadynamics simulations and hydration experiments.
Effect of Silane Coupling Agents on Flowability and Compressibility of
The XRD results showed that the structure of modified PCHs was influenced by the type of the silane coupling agent. The functionalization of PCHs with silane coupling agents was also confirmed by BET analysis.
Investigation of grafting silane coupling agents on superhydrophobicity
The present study demonstrated the wettability properties of grafting silane coupling agents on carbonyl iron (CI)/SiO2 particles for efficient oil/water mixture and emulsion separation.
Subcritical Water
The decomposition of CF 3 CH 2 CH 2 Si (OMe) 3 and C 4 F 9 CH 2 CH 2 Si (OMe) 3 ─typical fluorinated silane coupling agents used for surface modification─was investigated in subcritical water for potential waste treatment applications.
X-ray Diffraction Analysis of Silane Coupling Agents
Silane coupling agents are critical cross-linking agents in the preparation of organic-inorganic composite materials. Their primary functions include enhancing mechanical strength, thermal resistance, and processing performance of materials. Investigating the relationship between the structure and properties of silane coupling agents during synthesis and application holds significant theoretical and practical importance. This study employs X-ray diffraction (XRD) to analyze the structure of silane coupling agents and explores structural changes under different conditions, along with their impact on material properties.
1. XRD Analysis of Silane Coupling Agents
XRD is a widely used method for characterizing crystalline structures in materials. By analyzing X-ray diffraction patterns, atomic arrangements can be determined, revealing microstructural details. For silane coupling agents, XRD patterns provide insights into molecular chain regularity, crystallinity, and grain size.
When conducting XRD analysis, appropriate wavelength ranges and scanning speeds must be selected to obtain accurate diffraction patterns. Typically, silane coupling agents exhibit distinct diffraction peaks, whose positions and intensities correlate closely with crystalline structure. Analyzing these peaks allows for the determination of the agent’s crystalline state.
2. Structural Characteristics of Silane Coupling Agents
The molecular chains of silane coupling agents contain silicon atoms, enabling intermolecular chemical bonding. This enhances cross-linking density and mechanical strength. Additionally, silicon atoms form hydrogen bonds or other interactions with polymer chains, improving processing performance and thermal stability.
limitations exist. The high electron cloud density of silicon increases polarity, potentially affecting compatibility with other substances. Furthermore, the long molecular chains of silane coupling agents may hinder ordered crystalline structure formation under certain conditions.
3. Relationship Between Structural Changes and Performance
Structural modifications significantly influence the properties of silane coupling agents. For example, elongating molecular chains may reduce crystalline regularity, weakening mechanical strength. Polarity also affects compatibility with polymers; poor compatibility can degrade composite performance.
XRD analysis is a vital tool for studying the structure-property relationships of silane coupling agents. By interpreting XRD patterns, crystalline structural characteristics can be identified, guiding optimization of synthesis processes and performance improvements. Future research should further explore structure-property correlations to provide theoretical and technical support for silane coupling agent applications and development.
