1、Parametric Study on APTES Silanization of Coal Fly Ash for Enhanced

The surface modification of coal fly ash (CFA) with silane coupling agents improves its compatibility with polymer matrices and supports its use as a sustainable filler in composite materials.

2、Coconut fiber and fly ash polymer hybrid composite treated silane

Coconut fiber and fly ash were hybridized with a silane coupling agent to enhance composite properties. Silane treatment improved water absorption, tensile strength, and thermal stability. The treated composite showed a 33 % reduction in water absorption and a 1.8 % increase in tensile strength.

3、The Evaluation and Detection of the Chemical Bond Between Silane

The purpose of this study was to explore the suitable coupling agent and characterization method for detecting chemical bonds between silane coupling agents on the FA surface and silver particles plated on the FA surface.

4、Effect and Enhancement Mechanism of Silane Coupling Agent Modified Fly

Considering that silane coupling agent modified fly ash cenospheres (FACs) play an important role in improving the performance of epoxy resin (EP) composite coatings, three silane coupling agents (KH550, KH602, and KH792) were studied to modify FACs and enhance the performance of EP composite coatings.

5、Performance and application study of silane coupling agent (KH550

In order to improve the bonding properties between wooden fiber/fly ash cenosphere and epoxy resin, the grafting treatment of wooden fiber and fly ash cenosphere surfaces was carried out...

Preparation of White Carbon Black from Fly Ash Modified

The effects of amino, thiol and epoxy silane coupling agents on the dispersion of modified white carbon black were studied by FTIR, TGA, Zeta potentiometer and SEM. The results showed that three different silane coupling agents were grafted successfully onto the surface of white carbon black.

Performance and application study of silane coupling agent (KH550

In order to improve the bonding properties between wooden fiber/fly ash cenosphere and epoxy resin, the grafting treatment of wooden fiber and fly ash cenosphere surfaces was carried out here using KH550 type silane coupling agent.

Dry shrinkage and micro

In the context of this study, N- (β-aminoethyl)-γ-aminopropyl methyl dimethoxyl silane (KH792), serving as a silane coupling agent, has been used for the functionalization of pristine MWCNTs.

The Evaluation and Detection of the Chemical Bond Between Silane

X-ray photoelectron spectroscopy (XPS) was used to analyze whether three kinds of silane coupling agents coated on FA surfaces could detect the chemical bonds between silane coupling agents coated on the FA surface and silver layers by shortening the plating time.

25 Effect of Grafted Silane on Fly Ash _Pha Lai – Vietnam_ to

This paper reports effect of surface treatments of fly ash particles to mechanical, thermal properties and structure of polymer composites based on DER 331 epoxy resin matrix. The fly ash was treated by silane coupling agent GF 80 and GF 82.

Fly Ash: As an industrial by-product, fly ash is widely used in cement production, glass manufacturing, and ceramics. due to its low surface activity, it lacks effective chemical bonding with the cementitious matrix in fresh concrete, resulting in poor dispersion, reduced workability, and limited applications in modern building materials. To address this, silane coupling agents are extensively employed to enhance the interfacial performance of fly ash. This paper explores the principles, methods, and application effects of fly ash modification using silane coupling agents.

I. Principles of Fly Ash Modification with Silane Coupling Agents

Silane coupling agents are organic compounds containing silol groups (Si-OH). They react chemically with hydroxyl groups on the surface of fly ash, forming stable siloxane bonds (Si-O-Si). This improves the interfacial adhesion between fly ash and the cementitious matrix in fresh concrete. The modification enhances fly ash dispersion, workability, and bonding strength, thereby improving the overall performance of concrete.

II. Methods of Fly Ash Modification with Silane Coupling Agents

1. Pre-treatment Method: Fly ash surfaces are treated to enrich hydroxyl groups, preparing them for silane modification. Common methods include acid washing, alkali washing, and heat treatment.

2. Direct Addition Method: Silane coupling agents are added directly to fly ash, achieving modification through chemical reactions. This method is simple but requires precise control of dosage and timing.

3. Pre-mixing Method: Silane coupling agents are pre-mixed with water, and fly ash is then introduced. Stirring ensures full contact between the fly ash surface and silane agents, reducing waste and improving utilization efficiency.

III. Application Effects of Fly Ash Modification with Silane Coupling Agents

1. Improved Dispersion: Modified fly ash particles disperse more uniformly in concrete, reducing agglomeration and enhancing workability and stability.

2. Enhanced Bonding Strength: The interfacial adhesion between fly ash and fresh concrete is strengthened, improving compressive strength and durability.

3. Reduced Cement Usage: Improved dispersion and bonding allow for potential cement reduction, lowering costs.

4. Environmental Benefits: This technology promotes industrial waste recycling, aligning with green building material standards.

Fly ash modification with silane coupling agents is critical for expanding its use in modern construction materials. Scientifically tailored modification methods not only optimize fly ash performance but also advance sustainable development in the concrete industry. With ongoing technological advancements, this approach will play an increasingly vital role in construction.