1、Silane coupling agent

However, the introduction of silane coupling agents often leads to a decline in mechanical properties [24], creating a trade-off between water resistance improvement and mechanical performance. Addressing this challenge through molecular structure design in silane-modified WPUs remains a critical and unresolved issue in the field.

2、Surface Hydrophobic Modification of Biochar by Silane Coupling Agent KH

Silane coupling agent KH-570 is used to modify biochar to improve its hydrophobicity and waterproof ability after being added to the soil cover. The waterproofness of hydrophobic biochar-amended soil cover (HBSC) was studied by conducting a precipitation simulation test.

3、Limitless silanes

Coupling agent Silane coupling agents are silicon-based chemicals that contain two types of reactivity – inorganic and organic in the same molecule.

The Hydrophobic Mechanism of Silane Coupling Agents

In modern materials science, silane coupling agents, as critical surface modifiers, play a vital role in improving the hydrophilicity of material surfaces, enhancing adhesion, and increasing the corrosion resistance of coatings. The hydrophobic mechanism of silane coupling agents forms the foundation of their applications, involving the formation of chemical bonds and changes in intermolecular ...

Silane Coupling Agents

The general formula for a silane coupling agent typically shows the two classes of functionality. X is a hydrolyzable group typically alkoxy, acyloxy, halogen or amine. Following hydrolysis, a reactive silanol group is formed, which can condense with other silanol groups, for example, those on the surface of siliceous fillers, to form siloxane linkages . Stable condensation products are also ...

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. CI particles were first reacted with Tetraethoxysilane (TEOS) ...

Separation of microplastics from water using superhydrophobic silane

However, geopolymers modified with silane coupling agents have not been investigated for water treatment applications, which is an obvious research gap. In this study, we hypothesize that (super)hydrophobization of geopolymer foam would improve its interaction with hydrophobic MP particles, leading to the attachment of MPs on the geopolymer ...

Silane Coupling Agents

* Much progress has been made in the last 8 years in understanding the theory and practice of silane coupling agents. A major advance in this direction was the measurement of true equilibrium constants for the hydroly­ sis and formation of siloxane bonds. Equilibrium constants for bond reten­ tion are so favorable that a silane coupling agent on silica has a thousandfold advantage for bond ...

Frontiers

In this work, hydrophobic silane chains were grafted onto the surface of inorganic particles on the skin layer of HTV SR by a one-step coupling modification to improve its hydrophobicity. The effects of coupling agent types and coupling reaction conditions on the hydrophobicity of HTV SR were investigated.

Molecular elucidation of cement hydration inhibition by silane coupling

Silane coupling agents retard early hydration when incorporated into fresh cement paste. Here the authors show how silane coupling agents hinder calcium dissolution of tricalcium silicate from ab ...

Hydrophobic Silane Coupling Agents: An Innovative Chemical Material

In modern industry and scientific research, hydrophobic silane coupling agents play a critical role as an essential chemical material. With their unique properties and broad application range, they have become pivotal in connecting disparate materials, facilitating chemical reactions, and improving material performance. This article explores the scientific principles, synthesis methods, application fields, and future development trends of hydrophobic silane coupling agents.

I. Scientific Principles of Hydrophobic Silane Coupling Agents

Hydrophobic silane coupling agents are silicon-containing compounds characterized by molecular structures that bond silicon atoms to organic groups via siloxane (Si–O) linkages. This structure endows them with distinctive physicochemical properties, including excellent hydrophobicity, thermal stability, oxidation resistance, and chemical inertness. These attributes underpin their widespread applicability across diverse domains.

II. Synthesis Methods for Hydrophobic Silane Coupling Agents

The synthesis of hydrophobic silane coupling agents involves multiple approaches, with silane coupling agent production being the most common. Key steps include:

1. Raw Material Selection: Compounds such as trimethylchlorosilane or phenylvinyltriethoxysilane serve as precursors.
2. Reaction Processes: Silicon atoms are incorporated into organic molecules through thermal reactions, polycondensation, or ring-opening polymerization.
3. Purification: Final products are obtained via distillation, crystallization, and drying to ensure purity.

III. Application Fields of Hydrophobic Silane Coupling Agents

1. Coatings and Adhesives:

   • Enhance adhesion, abrasion resistance, and heat resistance.
   • Widely used in automotive, aerospace, and construction industries.

2. Textile Dyeing and Finishing:

   • Improve antistatic properties, wrinkle resistance, and water repellency.
   • Increase durability, comfort, and aesthetics of textiles.

3. Rubber and Plastics:

   • Boost wear resistance, aging resistance, and UV protection.
   • Critical in tires, pipelines, and cable manufacturing.

4. Electronic Encapsulation:

   • Strengthen adhesion and reliability of encapsulation materials.
   • Enhance stability and safety of electronic devices.

5. Pharmaceuticals and Cosmetic Products:

   • Improve stability, safety, and biocompatibility.
   • Drive innovation in medical and cosmetic formulations.

IV. Future Development Trends

Advancements in technology and evolving market demands are shaping the trajectory of hydrophobic silane coupling agents. Key trends include:

• Novel Material Development: Research focuses on creating specialized silane coupling agents tailored to niche applications.
• Sustainability: Emphasis on eco-friendly properties, such as reduced environmental impact and recyclability.

Hydrophobic silane coupling agents, with their exceptional performance and versatility, are indispensable for bridging materials, catalyzing reactions, and optimizing material properties. As technology advances and needs evolve, these agents are poised to expand their roles, driving progress across industries and contributing to societal advancement. Their continued innovation promises even greater impact in the future.