1、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.

2、Effect of different silane coupling agent modified SiO2 on the

This paper studies the effect of different modified SiO2 on SR performance through molecular dynamics simulation, and explores the mechanism of three silane coupling agents enhancing SiO 2 -SR bonding through interaction energy analysis.

3、Silanes and Other Coupling Agents; Volume 2

Silanes are the most popular and widely used coupling agents (or adhesion pro- moters) to promote adhesion between dissimilar materials in a variety of situations, e.g. coating technology, adhesive bonding, reinforced composites, etc.

4、Silane Coupling Agents

Many conventional coupling agents are frequently used in combination with 10-40% of a non-functional dipodal silane, where the conventional coupling agent provides the appropriate functionality for the application, and the non-functional dipodal silane provides increased durability.

5、Effect of the Presence of a Silane Coupling Agent on Reaction

The effect of the presence of a silane coupling agent containing different functional groups on the reaction kinetics and physical properties of epoxy resin generated via cationic thermopolymerization was investigated.

Subcritical Water

When CF 3 CH 2 CH 2 Si (OMe) 3 was heated in subcritical water with no additive at 350 °C, only a small amount of fluoride (F –) was produced. In contrast, virtually complete mineralization of CF 3 CH 2 CH 2 Si (OMe) 3 was achieved in the presence of KMnO 4.

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 initio metadynamics simulations and hydration experiments.

Elucidating Degradation Phenomena During Mixing of Silica‐Natural

The present study examines the impact of various commercial silane coupling agents on degradation phenomena during mixing of silica-filled NR compounds by analyzing changes in viscoelastic response, with a focus on different silane microstructures.

Preliminary investigation of silane coupling agents

Adhesion strength is a primary metric for evaluating the performance of a silane coupling agent. It quantifies the enhancement of the bond between the inorganic substrate and the organic matrix. Shear Bond Strength (SBS) is a commonly used test for this purpose. A higher SBS value indicates a stronger and more durable interface.

Silane Coupling Agents

Silane coupling agents are compounds whose molecules contain functional groups that bond with both organic and inorganic materials. A silane coupling agent acts as a sort of intermediary which bonds organic materials to inorganic materials.

In modern materials science and chemical engineering, silane coupling agents, as critical surfactants, are widely used to enhance the interfacial bonding performance of polymer materials. in practical applications, instances of silane coupling agents failing to cure occasionally occur. This not only compromises the final product performance but may also pose safety risks. This paper thoroughly investigates the causes and solutions for the non-curing phenomenon of silane coupling agents, aiming to provide references for research and application in related fields.

I. Overview of the Non-Curing Phenomenon of Silane Coupling Agents

Silane coupling agents are compounds containing silicon-oxygen bonds that can react with various materials to form stable chemical bonds. When applied to surface treatments of polymer materials, their unique chemical properties enable effective interfacial bonding at the molecular level. under certain conditions, silane coupling agents may fail to achieve the expected curing effects, significantly diminishing their application value.

II. Analysis of Causes for Non-Curing of Silane Coupling Agents

1. Environmental Factors

   • Humidity Effects: High environmental humidity can lead to reactions between water vapor and silane coupling agents, generating hydrolysis products that interfere with curing. Additionally, high humidity reduces volatility, slowing the curing process.
   • Temperature Effects: Temperature critically affects curing. Elevated temperatures enhance the activity of silane coupling agents, facilitating curing, while low temperatures reduce activity and slow curing. Selecting an appropriate curing temperature is essential.

2. Process Factors

   • Curing Time Control: Inadequate curing time (too short) prevents full curing, while excessive time degrades material properties. Adjusting curing time based on specific conditions is necessary.
   • Curing Temperature Control: Temperature extremes hinder optimal curing. Experimental determination of suitable temperatures ensures proper curing outcomes.

3. Material Factors

   • Substrate Compatibility: Variations in substrate adsorption capabilities affect curing. Poor compatibility between substrates and silane coupling agents may result in incomplete or no curing.
   • Surface Treatment Methods: Excessive grinding or cleaning can remove silane coupling agents from surfaces, leading to incomplete curing. Appropriate surface treatments must be selected.

III. Solutions for Non-Curing of Silane Coupling Agents

1. Optimizing Environmental Conditions

   • Humidity Control: Use dehumidification equipment or schedule curing during low-humidity periods.
   • Temperature Control: Employ heating or insulation measures in low-temperature environments, while avoiding overheating to prevent structural damage.

2. Improving Process Operations

   • Rational Curing Time: Experimentally determine optimal curing durations to avoid under- or over-curing.
   • Temperature Regulation: Adjust curing temperatures experimentally to balance speed and quality.

3. Optimizing Material Selection

   • Compatible Silane Coupling Agents: Choose agents with good compatibility with substrates.
   • Appropriate Surface Treatments: Tailor surface treatments (e.g., grinding, cleaning) to ensure adequate contact between silane coupling agents and substrates.

The non-curing phenomenon of silane coupling agents is a multifaceted issue involving environmental, process, and material factors. By optimizing environmental conditions, refining processes, and selecting compatible materials, this problem can be effectively addressed. Future research and practice should continue exploring and refining solutions to advance the application and development of silane coupling agents across industries.